Annual report pursuant to Section 13 and 15(d)

INCOME TAXES Reconciliation Between the Statutory Federal Income Tax Rate for the Company and the Effective Income Tax (Details)

v3.8.0.1
INCOME TAXES Reconciliation Between the Statutory Federal Income Tax Rate for the Company and the Effective Income Tax (Details)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Tax Credit Carryforward [Line Items]      
Statutory rate 35.00% 35.00% 35.00%
State taxes, net of federal tax benefit 5.30% 18.50% (0.10%)
Transfer of asset to Hauser 0.00% 0.00% 4.00%
Write-off of deferred tax asset upon consolidation of Aeróleo 0.00% 0.00% 16.00%
Brazilian PERT Program 2.20% 0.00% 0.00%
Other (0.60%) (1.10%) 2.20%
Tax Act 46.00% 0.00% 0.00%
Effective Income Tax Rate, Continuing Operations 80.30% 17.30% 58.90%
State and Local Jurisdiction      
Tax Credit Carryforward [Line Items]      
State valuation allowance (6.60%) (21.00%) 1.80%
Foreign Tax Authority      
Tax Credit Carryforward [Line Items]      
State valuation allowance (1.00%) (14.10%) 0.00%