Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instrument Detail [Abstract]

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

The fair values of our derivative instruments were as follows:

		Fair Value
Asset Derivatives	Balance Sheet Location	March 31, 2018		December 31, 2017
Derivatives designated as hedging instruments under ASC 815-20		(in thousands)
Interest rate swap contracts	Other current assets	$	1,303	$	658
Interest rate cap contracts	Other current assets	74		17
Interest rate swap contracts	Other long-term assets	2,226		1,712
Interest rate cap contracts	Other long-term assets	310		179
Derivatives not designated as hedging instruments under ASC 815-20
Foreign exchange forward contracts	Other current assets	44		41
Interest rate cap contracts	Other current assets	111		25
Interest rate cap contracts	Other long-term assets	464		268
Total asset derivatives		$	4,532	$	2,900
Liability Derivatives
Derivatives not designated as hedging instruments under ASC 815-20
Foreign exchange forward contracts	Other current liabilities	$	356	$	289

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

The changes in accumulated other comprehensive income (loss) (AOCI), net of tax, for our derivative and nonderivative hedging instruments, were as follows:

	2018			2017
	(in thousands)
Net unrealized gain (loss) on hedging instruments at January 1,	$	(13,414	)	$	(14,337	)
Unrealized gain (loss) on hedging instruments	1,183			60
Realized loss (gain) reclassified into net income	(14		)	232
Net unrealized gain (loss) on hedging instruments at March 31,	$	(12,245	)	$	(14,045	)

Offsetting Assets [Table Text Block]

A summary of the 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 of Recognized Assets Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets
			Derivative Financial Instruments			Cash Collateral Received		Net Amount
	(in thousands)
March 31, 2018	$	4,532	$	(128	)	$	—	$	4,404
December 31, 2017	$	2,900	$	(90	)	$	—	$	2,810

Offsetting Liabilities [Table Text Block]

Offsetting of Derivative Liabilities	Gross Amounts of Recognized Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets
			Derivative Financial Instruments			Cash Collateral Pledged		Net Amount
	(in thousands)
March 31, 2018	$	356	$	(128	)	$	—	$	228
December 31, 2017	$	289	$	(90	)	$	—	$	199

Effect of Cash Flow Derivatives on the Balance Sheet and Income Statement, Before Tax [Table Text Block]

The before-tax effects of our derivative instruments designated as hedges on the Consolidated Balance Sheets and the Consolidated Statements of Operations were as follows:

Derivatives in ASC 815-20 Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)					Gain (Loss) Reclassified from Accumulated AOCI into Income (Effective Portion)							Gain (Loss) Recognized in Income on Derivative (Ineffective Portion)
						Location	Amount						Location	Amount
	2018		2017				2018			2017				2018		2017
	(in thousands)						(in thousands)							(in thousands)
Three Months Ended March 31,
Interest rate swap contracts	$	1,247	$	181		Interest expense	$	88		$	(335	)	Interest expense	$	—	$	—
Interest rate cap contracts	188		(84		)	Interest expense	(70		)	(43		)	Interest expense	—		—

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

The effect of our derivative instruments not designated as hedges on the Consolidated Statements of Operations was as follows:

Derivatives Not Designated as Hedging Instrument under ASC 815-20	Location	Gain (Loss) Recognized on Derivatives in Other Income (Expense)
		Three Months Ended March 31,
		2018			2017
		(in thousands)
Foreign exchange forward contracts	Other income (expense), net	$	(1,523	)	$	(1,742	)
Interest rate cap contracts	Interest expense	282			(126		)