Annual report pursuant to Section 13 and 15(d)

INCOME TAXES Components of Net Deferred Tax Liabilities (Details)

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INCOME TAXES Components of Net Deferred Tax Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Deferred tax liabilities:    
Property and equipment $ 126,595 $ 242,977
Buy-in on maintenance contracts 655 1,443
Total deferred tax liabilities 127,250 244,420
Deferred tax assets:    
Equipment leases 47 224
Tax loss carryforwards 52,293 34,674
Stock compensation 843 2,131
Reserves 897 1,452
Other 1,539 2,042
Valuation allowance (34,967) (21,575)
Total deferred tax assets 20,652 18,948
Net deferred tax liabilities $ 106,598 $ 225,472