Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details)

v3.8.0.1
Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Deferred Tax Assets, Net [Abstract]    
Accounts receivable reserves $ 1,357 $ 1,142
Accrued liabilities 10,639 9,197
Net operating loss carryforwards 153,683 204,478
Derivative financial instruments 1,705 3,283
Business credits 883 1,409
Other deferred tax assets 1,675 3,746
Valuation allowance (86,281) (96,003)
Total deferred tax assets 83,661 127,252
Deferred Tax Liabilities, Net [Abstract]    
Intangible assets (94,962) (141,100)
Property, plant and equipment (2,003) (3,482)
Total deferred tax liabilities (96,965) (144,582)
Net deferred tax liabilities $ (13,304) $ (17,330)