| GUARANTORS OF SECURITIES Supplemental Condensed Consolidating Balance Sheet (Details) - USD ($)$ in Thousands
 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | 
| Current assets: |  |  |  |  | 
| Cash and cash equivalents (including $1,448 and $3,192 from VIEs in 2016 and 2015, respectively) | $ 26,950 | $ 14,370 | $ 40,867 | $ 31,335 | 
| Receivables [Abstract] |  |  |  |  | 
| Trade, net of allowance for doubtful accounts of $1,219 and $2,103 in 2016 and 2015, respectively (including $5,989 and $8,240 from VIEs in 2016 and 2015, respectively) | 32,470 | 48,639 |  |  | 
| Tax receivables (including $3,448 and $0 from VIEs in 2016 and 2015, respectively) | 3,461 | 6,085 |  |  | 
| Other (including $1,019 and $179 from VIEs in 2016 and 2015, respectively) | 2,716 | 3,305 |  |  | 
| Inventories, net (including $46 and $2,240 from VIEs in 2016 and 2015, respectively) | 25,417 | 27,994 |  |  | 
| Prepaid expenses | 1,579 | 1,963 |  |  | 
| Other current assets | 3,777 | 191 |  |  | 
| Total current assets | 96,370 | 102,547 |  |  | 
| Property and equipment: |  |  |  |  | 
| Property and equipment | 1,154,028 | 1,175,909 |  |  | 
| Accumulated depreciation | (332,219) | (316,693) |  |  | 
| Property and equipment, net | 821,809 | 859,216 |  |  | 
| Equity investments and advances | 29,266 | 28,898 |  |  | 
| Investments in consolidated subsidiaries | 0 | 0 |  |  | 
| Intangible assets | 1,137 | 1,158 |  |  | 
| Deferred income taxes | 0 | 0 |  |  | 
| Intercompany receivables | 0 | 0 |  |  | 
| Other assets (including $48 and $3,367 from VIEs in 2016 and 2015, respectively) | 6,591 | 12,532 |  |  | 
| Total assets | 955,173 | 1,004,351 |  |  | 
| Current liabilities: |  |  |  |  | 
| Accounts payable and accrued expenses (including $1,788 and $1,709 from VIEs in 2016 and 2015, respectively) | 8,876 | 12,000 |  |  | 
| Accrued wages and benefits (including $2,009 and $2,108 from VIEs in 2016 and 2015, respectively) | 8,507 | 9,012 |  |  | 
| Accrued interest | 529 | 562 |  |  | 
| Accrued income taxes | 666 | 0 |  |  | 
| Current portion of long-term debt (including $615 and $1,632 from VIEs in 2016 and 2015, respectively) | 2,139 | 3,386 |  |  | 
| Accrued other taxes (including $773 and $1,593 from VIEs in 2016 and 2015, respectively) | 1,447 | 2,412 |  |  | 
| Accrued contingencies (including $1,237 and $2,358 from VIEs in 2016 and 2015, respectively) | 1,237 | 2,358 |  |  | 
| Other current liabilities (including $8 and $450 from VIEs in 2016 and 2015, respectively) | 2,222 | 2,300 |  |  | 
| Total current liabilities | 25,623 | 32,030 |  |  | 
| Long-term debt (including $2,767 and $6,040 from VIEs in 2016 and 2015, respectively) | 230,139 | 264,479 |  |  | 
| Deferred income taxes | 225,472 | 229,848 |  |  | 
| Intercompany payables | 0 | 0 |  |  | 
| Other liabilities | 1,301 | 1,887 |  |  | 
| Total liabilities | 482,535 | 528,244 |  |  | 
| Redeemable noncontrolling interest | 4,221 | 4,804 | 0 | 0 | 
| Era Group Inc. stockholders’ equity: |  |  |  |  | 
| Common stock, $0.01 par value, 60,000,000 shares authorized; 20,495,694 outstanding, exclusive of treasury shares | 211 | 207 |  |  | 
| Additional paid-in capital | 438,489 | 433,175 |  |  | 
| Retained earnings | 32,524 | 40,502 |  |  | 
| Treasury shares, at cost, 175,350 and 154,549 shares in 2016 and 2015, respectively | (2,899) | (2,673) |  |  | 
| Accumulated other comprehensive income, net of tax | 92 | 92 |  |  | 
| Total equity | 468,417 | 471,303 | 460,364 | 436,061 | 
| Total liabilities, redeemable noncontrolling interest and stockholders’ equity | 955,173 | 1,004,351 |  |  | 
| Parent |  |  |  |  | 
| Current assets: |  |  |  |  | 
| Cash and cash equivalents (including $1,448 and $3,192 from VIEs in 2016 and 2015, respectively) | 25,474 | 7,565 | 16,481 | 24,635 | 
| Receivables [Abstract] |  |  |  |  | 
| Trade, net of allowance for doubtful accounts of $1,219 and $2,103 in 2016 and 2015, respectively (including $5,989 and $8,240 from VIEs in 2016 and 2015, respectively) | 39 | 39 |  |  | 
| Tax receivables (including $3,448 and $0 from VIEs in 2016 and 2015, respectively) | 9 | 6,013 |  |  | 
| Other (including $1,019 and $179 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Inventories, net (including $46 and $2,240 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Prepaid expenses | 359 | 458 |  |  | 
| Other current assets | 0 | 190 |  |  | 
| Total current assets | 25,881 | 14,265 |  |  | 
| Property and equipment: |  |  |  |  | 
| Property and equipment | 0 | 0 |  |  | 
| Accumulated depreciation | 0 | 0 |  |  | 
| Property and equipment, net | 0 | 0 |  |  | 
| Equity investments and advances | 0 | 0 |  |  | 
| Investments in consolidated subsidiaries | 174,830 | 172,335 |  |  | 
| Intangible assets | 0 | 0 |  |  | 
| Deferred income taxes | 12,262 | 3,823 |  |  | 
| Intercompany receivables | 460,623 | 515,255 |  |  | 
| Other assets (including $48 and $3,367 from VIEs in 2016 and 2015, respectively) | 1,820 | 2,166 |  |  | 
| Total assets | 675,416 | 707,844 |  |  | 
| Current liabilities: |  |  |  |  | 
| Accounts payable and accrued expenses (including $1,788 and $1,709 from VIEs in 2016 and 2015, respectively) | 322 | 386 |  |  | 
| Accrued wages and benefits (including $2,009 and $2,108 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Accrued interest | 529 | 549 |  |  | 
| Accrued income taxes | 0 |  |  |  | 
| Current portion of long-term debt (including $615 and $1,632 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Accrued other taxes (including $773 and $1,593 from VIEs in 2016 and 2015, respectively) | 29 | 30 |  |  | 
| Accrued contingencies (including $1,237 and $2,358 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Other current liabilities (including $8 and $450 from VIEs in 2016 and 2015, respectively) | 481 | 534 |  |  | 
| Total current liabilities | 1,361 | 1,499 |  |  | 
| Long-term debt (including $2,767 and $6,040 from VIEs in 2016 and 2015, respectively) | 205,730 | 235,134 |  |  | 
| Deferred income taxes | 0 | 0 |  |  | 
| Intercompany payables | 0 | 0 |  |  | 
| Other liabilities | 0 | 0 |  |  | 
| Total liabilities | 207,091 | 236,633 |  |  | 
| Redeemable noncontrolling interest | 0 | 0 |  |  | 
| Era Group Inc. stockholders’ equity: |  |  |  |  | 
| Common stock, $0.01 par value, 60,000,000 shares authorized; 20,495,694 outstanding, exclusive of treasury shares | 211 | 207 |  |  | 
| Additional paid-in capital | 438,489 | 433,175 |  |  | 
| Retained earnings | 32,524 | 40,502 |  |  | 
| Treasury shares, at cost, 175,350 and 154,549 shares in 2016 and 2015, respectively | (2,899) | (2,673) |  |  | 
| Accumulated other comprehensive income, net of tax | 0 | 0 |  |  | 
| Total equity | 468,325 | 471,211 |  |  | 
| Total liabilities, redeemable noncontrolling interest and stockholders’ equity | 675,416 | 707,844 |  |  | 
| Guarantors |  |  |  |  | 
| Current assets: |  |  |  |  | 
| Cash and cash equivalents (including $1,448 and $3,192 from VIEs in 2016 and 2015, respectively) | 0 | 3,334 | 22,188 | 5,403 | 
| Receivables [Abstract] |  |  |  |  | 
| Trade, net of allowance for doubtful accounts of $1,219 and $2,103 in 2016 and 2015, respectively (including $5,989 and $8,240 from VIEs in 2016 and 2015, respectively) | 26,118 | 40,345 |  |  | 
| Tax receivables (including $3,448 and $0 from VIEs in 2016 and 2015, respectively) | 4 | 72 |  |  | 
| Other (including $1,019 and $179 from VIEs in 2016 and 2015, respectively) | 1,658 | 3,089 |  |  | 
| Inventories, net (including $46 and $2,240 from VIEs in 2016 and 2015, respectively) | 25,156 | 25,557 |  |  | 
| Prepaid expenses | 976 | 1,411 |  |  | 
| Other current assets | 3,777 | 1 |  |  | 
| Total current assets | 57,689 | 73,809 |  |  | 
| Property and equipment: |  |  |  |  | 
| Property and equipment | 1,138,020 | 1,159,441 |  |  | 
| Accumulated depreciation | (330,735) | (316,090) |  |  | 
| Property and equipment, net | 807,285 | 843,351 |  |  | 
| Equity investments and advances | 29,266 | 28,898 |  |  | 
| Investments in consolidated subsidiaries | 0 | 0 |  |  | 
| Intangible assets | 0 | 0 |  |  | 
| Deferred income taxes | 0 | 0 |  |  | 
| Intercompany receivables | 0 | 0 |  |  | 
| Other assets (including $48 and $3,367 from VIEs in 2016 and 2015, respectively) | 4,723 | 6,999 |  |  | 
| Total assets | 898,963 | 953,057 |  |  | 
| Current liabilities: |  |  |  |  | 
| Accounts payable and accrued expenses (including $1,788 and $1,709 from VIEs in 2016 and 2015, respectively) | 6,273 | 9,635 |  |  | 
| Accrued wages and benefits (including $2,009 and $2,108 from VIEs in 2016 and 2015, respectively) | 6,446 | 6,875 |  |  | 
| Accrued interest | 0 | 13 |  |  | 
| Accrued income taxes | 653 |  |  |  | 
| Current portion of long-term debt (including $615 and $1,632 from VIEs in 2016 and 2015, respectively) | 1,524 | 1,663 |  |  | 
| Accrued other taxes (including $773 and $1,593 from VIEs in 2016 and 2015, respectively) | 645 | 789 |  |  | 
| Accrued contingencies (including $1,237 and $2,358 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Other current liabilities (including $8 and $450 from VIEs in 2016 and 2015, respectively) | 1,525 | 1,311 |  |  | 
| Total current liabilities | 17,066 | 20,286 |  |  | 
| Long-term debt (including $2,767 and $6,040 from VIEs in 2016 and 2015, respectively) | 21,642 | 23,305 |  |  | 
| Deferred income taxes | 237,067 | 232,994 |  |  | 
| Intercompany payables | 426,410 | 501,512 |  |  | 
| Other liabilities | 1,301 | 1,887 |  |  | 
| Total liabilities | 703,486 | 779,984 |  |  | 
| Redeemable noncontrolling interest | 4 | 4 |  |  | 
| Era Group Inc. stockholders’ equity: |  |  |  |  | 
| Common stock, $0.01 par value, 60,000,000 shares authorized; 20,495,694 outstanding, exclusive of treasury shares | 0 | 0 |  |  | 
| Additional paid-in capital | 100,306 | 95,543 |  |  | 
| Retained earnings | 95,075 | 77,434 |  |  | 
| Treasury shares, at cost, 175,350 and 154,549 shares in 2016 and 2015, respectively | 0 | 0 |  |  | 
| Accumulated other comprehensive income, net of tax | 92 | 92 |  |  | 
| Total equity | 195,473 | 173,069 |  |  | 
| Total liabilities, redeemable noncontrolling interest and stockholders’ equity | 898,963 | 953,057 |  |  | 
| Non-guarantors |  |  |  |  | 
| Current assets: |  |  |  |  | 
| Cash and cash equivalents (including $1,448 and $3,192 from VIEs in 2016 and 2015, respectively) | 1,476 | 3,471 | 2,198 | 1,297 | 
| Receivables [Abstract] |  |  |  |  | 
| Trade, net of allowance for doubtful accounts of $1,219 and $2,103 in 2016 and 2015, respectively (including $5,989 and $8,240 from VIEs in 2016 and 2015, respectively) | 6,313 | 8,255 |  |  | 
| Tax receivables (including $3,448 and $0 from VIEs in 2016 and 2015, respectively) | 3,448 | 0 |  |  | 
| Other (including $1,019 and $179 from VIEs in 2016 and 2015, respectively) | 1,058 | 216 |  |  | 
| Inventories, net (including $46 and $2,240 from VIEs in 2016 and 2015, respectively) | 261 | 2,437 |  |  | 
| Prepaid expenses | 244 | 94 |  |  | 
| Other current assets | 0 | 0 |  |  | 
| Total current assets | 12,800 | 14,473 |  |  | 
| Property and equipment: |  |  |  |  | 
| Property and equipment | 16,008 | 16,468 |  |  | 
| Accumulated depreciation | (1,484) | (603) |  |  | 
| Property and equipment, net | 14,524 | 15,865 |  |  | 
| Equity investments and advances | 0 | 0 |  |  | 
| Investments in consolidated subsidiaries | 0 | 0 |  |  | 
| Intangible assets | 1,137 | 1,158 |  |  | 
| Deferred income taxes | 0 | 0 |  |  | 
| Intercompany receivables | 0 | 0 |  |  | 
| Other assets (including $48 and $3,367 from VIEs in 2016 and 2015, respectively) | 48 | 3,367 |  |  | 
| Total assets | 28,509 | 34,863 |  |  | 
| Current liabilities: |  |  |  |  | 
| Accounts payable and accrued expenses (including $1,788 and $1,709 from VIEs in 2016 and 2015, respectively) | 2,281 | 1,979 |  |  | 
| Accrued wages and benefits (including $2,009 and $2,108 from VIEs in 2016 and 2015, respectively) | 2,061 | 2,137 |  |  | 
| Accrued interest | 0 | 0 |  |  | 
| Accrued income taxes | 13 |  |  |  | 
| Current portion of long-term debt (including $615 and $1,632 from VIEs in 2016 and 2015, respectively) | 615 | 1,723 |  |  | 
| Accrued other taxes (including $773 and $1,593 from VIEs in 2016 and 2015, respectively) | 773 | 1,593 |  |  | 
| Accrued contingencies (including $1,237 and $2,358 from VIEs in 2016 and 2015, respectively) | 1,237 | 2,358 |  |  | 
| Other current liabilities (including $8 and $450 from VIEs in 2016 and 2015, respectively) | 216 | 455 |  |  | 
| Total current liabilities | 7,196 | 10,245 |  |  | 
| Long-term debt (including $2,767 and $6,040 from VIEs in 2016 and 2015, respectively) | 2,767 | 6,040 |  |  | 
| Deferred income taxes | 667 | 677 |  |  | 
| Intercompany payables | 34,213 | 13,743 |  |  | 
| Other liabilities | 0 | 0 |  |  | 
| Total liabilities | 44,843 | 30,705 |  |  | 
| Redeemable noncontrolling interest | 4,217 | 4,800 |  |  | 
| Era Group Inc. stockholders’ equity: |  |  |  |  | 
| Common stock, $0.01 par value, 60,000,000 shares authorized; 20,495,694 outstanding, exclusive of treasury shares | 0 | 0 |  |  | 
| Additional paid-in capital | 4,562 | 9,325 |  |  | 
| Retained earnings | (25,113) | (9,967) |  |  | 
| Treasury shares, at cost, 175,350 and 154,549 shares in 2016 and 2015, respectively | 0 | 0 |  |  | 
| Accumulated other comprehensive income, net of tax | 0 | 0 |  |  | 
| Total equity | (20,551) | (642) |  |  | 
| Total liabilities, redeemable noncontrolling interest and stockholders’ equity | 28,509 | 34,863 |  |  | 
| Eliminations |  |  |  |  | 
| Current assets: |  |  |  |  | 
| Cash and cash equivalents (including $1,448 and $3,192 from VIEs in 2016 and 2015, respectively) | 0 | 0 | $ 0 | $ 0 | 
| Receivables [Abstract] |  |  |  |  | 
| Trade, net of allowance for doubtful accounts of $1,219 and $2,103 in 2016 and 2015, respectively (including $5,989 and $8,240 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Tax receivables (including $3,448 and $0 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Other (including $1,019 and $179 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Inventories, net (including $46 and $2,240 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Prepaid expenses | 0 | 0 |  |  | 
| Other current assets | 0 |  |  |  | 
| Total current assets | 0 | 0 |  |  | 
| Property and equipment: |  |  |  |  | 
| Property and equipment | 0 | 0 |  |  | 
| Accumulated depreciation | 0 | 0 |  |  | 
| Property and equipment, net | 0 | 0 |  |  | 
| Equity investments and advances | 0 | 0 |  |  | 
| Investments in consolidated subsidiaries | (174,830) | (172,335) |  |  | 
| Intangible assets | 0 | 0 |  |  | 
| Deferred income taxes | (12,262) | (3,823) |  |  | 
| Intercompany receivables | (460,623) | (515,255) |  |  | 
| Other assets (including $48 and $3,367 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Total assets | (647,715) | (691,413) |  |  | 
| Current liabilities: |  |  |  |  | 
| Accounts payable and accrued expenses (including $1,788 and $1,709 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Accrued wages and benefits (including $2,009 and $2,108 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Accrued interest | 0 | 0 |  |  | 
| Accrued income taxes | 0 |  |  |  | 
| Current portion of long-term debt (including $615 and $1,632 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Accrued other taxes (including $773 and $1,593 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Accrued contingencies (including $1,237 and $2,358 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Other current liabilities (including $8 and $450 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Total current liabilities | 0 | 0 |  |  | 
| Long-term debt (including $2,767 and $6,040 from VIEs in 2016 and 2015, respectively) | 0 | 0 |  |  | 
| Deferred income taxes | (12,262) | (3,823) |  |  | 
| Intercompany payables | (460,623) | (515,255) |  |  | 
| Other liabilities | 0 | 0 |  |  | 
| Total liabilities | (472,885) | (519,078) |  |  | 
| Redeemable noncontrolling interest | 0 | 0 |  |  | 
| Era Group Inc. stockholders’ equity: |  |  |  |  | 
| Common stock, $0.01 par value, 60,000,000 shares authorized; 20,495,694 outstanding, exclusive of treasury shares | 0 | 0 |  |  | 
| Additional paid-in capital | (104,868) | (104,868) |  |  | 
| Retained earnings | (69,962) | (67,467) |  |  | 
| Treasury shares, at cost, 175,350 and 154,549 shares in 2016 and 2015, respectively | 0 | 0 |  |  | 
| Accumulated other comprehensive income, net of tax | 0 | 0 |  |  | 
| Total equity | (174,830) | (172,335) |  |  | 
| Total liabilities, redeemable noncontrolling interest and stockholders’ equity | $ (647,715) | $ (691,413) |  |  |