Annual report pursuant to Section 13 and 15(d)

Income Taxes - Effective Income Tax Rate Reconciliation (Details)

v3.7.0.1
Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Statutory rate 35.00% 35.00% 35.00%
Effective income tax rate continuing operations tax rate reconciliation      
U.S. Federal income tax expense at a statutory rate of 35 percent $ (17,143) $ 56,144 $ (30,139)
State taxes, net of federal income tax benefit 11,442 12,777 5,119
Tax position on government incentives 117,630 85,423 76,662
Goodwill impairment tax impact 2,876 (35,062) 0
Bargain purchase gain 0 1,875 0
Foreign net operating loss expiration (2,383) 0 0
Other (1,710) 1,650 (2,685)
Total (expense) benefits for income taxes before valuation allowances 110,712 122,807 48,957
Valuation allowances (114,980) (114,106) (52,529)
Income tax benefit (expense) $ (4,268) $ 8,701 $ (3,572)