Derivative Financial Instruments Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The fair values of our derivative instruments are as follows:

		Fair Value
	Balance Sheet Location	December 31, 2016		December 31, 2015
		(in thousands)
Asset Derivatives
Derivatives designated as hedging instruments under ASC 815-20
Interest rate cap contracts	Other current assets	$	3	$	—
Interest rate swap contracts	Other long-term assets	1,830		1,632
Interest rate cap contracts	Other long-term assets	376		1,423
Derivatives not designated as hedging instruments under ASC 815-20
Foreign exchange forward contracts	Other current assets	169		27
Interest rate cap contracts	Other current assets	4		—
Interest rate cap contracts	Other long-term assets	563		—
Total asset derivatives		$	2,945	$	3,082
Liability Derivatives
Derivatives designated as hedging instruments under ASC 815-20
Interest rate swap contracts	Other current liabilities	$	934	$	868
Derivatives not designated as hedging instruments under ASC 815-20
Foreign exchange forward contracts	Other current liabilities	449		99
Total liability derivatives		$	1,383	$	967

Accumulated OCI for Derivative and Nonderivative Instruments Designated as Hedging Instruments, Net of Tax [Table Text Block]

OCI during the reporting period for our derivative and nonderivative instruments designated as hedging instruments, net of tax, was as follows:

	2016			2015			2014
	(in thousands)
Net unrealized gain (loss) on hedging instruments at January 1,	$	(14,062	)	$	(15,148	)	$	(15,636	)
Unrealized gain (loss) on derivative instruments	(1,087		)	76			(566		)
Realized (gains) losses reclassified into net income (loss)	812			1,010			1,054
Net unrealized gain (loss) on hedging instruments at December 31,	$	(14,337	)	$	(14,062	)	$	(15,148	)

Offsetting Assets [Table Text Block]

A summary of the potential effect of netting arrangements on our financial position related to the offsetting of our recognized derivative assets and liabilities under master netting arrangements or similar agreements is as follows:

Offsetting of Derivative Assets
			Gross Amounts Not Offset in the Consolidated Balance Sheets
	Gross Amounts of Recognized Assets Presented in the Consolidated Balance Sheets		Derivative Financial Instruments			Cash Collateral Received		Net Amount
	(in thousands)
December 31, 2016	$	2,945	$	(1,322	)	$	—	$	1,623
December 31, 2015	$	3,082	$	(565	)	$	—	$	2,517

Offsetting Liabilities [Table Text Block]

Offsetting of Derivative Liabilities
			Gross Amounts Not Offset in the Consolidated Balance Sheets
	Gross Amounts of Recognized Liabilities Presented in the Consolidated Balance Sheets		Derivative Financial Instruments			Cash Collateral Pledged		Net Amount
	(in thousands)
December 31, 2016	$	1,383	$	(1,322	)	$	—	$	61
December 31, 2015	$	967	$	(565	)	$	—	$	402

Derivative Instruments, Gain (Loss) [Table Text Block]

The before-tax effects of our cash flow derivative hedging instruments on the Consolidated Balance Sheets and the Consolidated Statements of Operations for the years ended December 31 are as follows:

Derivatives in ASC 815 Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)									Loss Reclassified from AOCI into Income (Effective Portion)										Loss Recognized in Income on Derivative (Ineffective Portion)
										Location	Amount									Location	Amount
	2016			2015			2014				2016			2015			2014				2016			2015		2014
	(in thousands)										(in thousands)										(in thousands)
Interest rate swap contracts	$	(1,163	)	$	367		$	(915	)	Interest expense	$	(1,296	)	$	(1,639	)	$	(1,704	)	Interest expense	$	—		$	—	$	—
Interest rate cap contracts	$	(605	)	$	(244	)	$	—		Interest expense	$	(27	)	$	—		$	—		Interest expense	$	(1	)	$	—	$	—

Foreign Exchange Derivatives Not Designated As Hedging Instruments [Table Text Block]

The before-tax effects of our derivatives not designated as hedging instruments on the Consolidated Statements of Operations for the years ended December 31 are as follows:

Derivatives Not Designated as Hedging Instrument under ASC 815	Location	Gain (Loss) Recognized in Income on Derivative
		2016		2015			2014
		(in thousands)
Foreign exchange forward contracts	Other income (expense), net	$	537	$	(3,145	)	$	(5,248	)
Interest rate cap contracts	Interest expense	$	129	$	—		$	—