Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

As of December 31, 2017 and 2016, the fair value carrying amount of the Company's derivatives designated as hedging instruments are recorded as follows (dollars in thousands):

		Asset / (Liability) Derivatives
Derivatives designated as hedging instruments	Balance Sheet Caption	December 31, 2017			December 31, 2016
Net Investment Hedges
Cross-currency swaps	Other long-term liabilities	$	(4,110	)	$	—
Cash Flow Hedges
Interest rate swaps	Prepaid expenses and other current assets	—			160
Interest rate swaps	Accrued liabilities	—			(870		)
Interest rate swaps	Other long-term liabilities	—			(3,360		)
Total derivatives designated as hedging instruments		$	(4,110	)	$	(4,070	)

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

The following table summarizes the loss recognized in accumulated other comprehensive income ("AOCI") on derivative contracts designated as hedging instruments as of December 31, 2017 and 2016, and the amounts reclassified from AOCI into earnings for the years ended December 31, 2017, 2016 and 2015 (dollars in thousands):

	Amount of Loss Recognized in AOCI on Derivative (Effective Portion, net of tax)						Location of Loss Reclassified from AOCI into Earnings (Effective Portion)	Amount of Loss Reclassified from AOCI into Earnings
	As of December 31,							Year ended December 31,
	2017			2016				2017			2016			2015
Net Investment Hedges
Cross-currency swaps	$	(3,170	)	$	—		Other expense, net	$	—		$	—		$	—
Cash Flow Hedges
Interest rate swaps	$	—		$	(2,520	)	Interest expense	$	(320	)	$	(670	)	$	(420	)
							Debt financing and related expenses	$	(4,680	)	$	—		$	—
							Loss from discontinued operations	$	—		$	—		$	(440	)

Fair Value Measurements, Recurring and Nonrecurring

Fair value measurements and the fair value hierarchy level for the Company's assets and liabilities measured at fair value on a recurring basis as of December 31, 2017 and 2016 are shown below (dollars in thousands).

	Description	Frequency	Asset / (Liability)			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
December 31, 2017	Cross-currency swaps	Recurring	$	(4,110	)	$	—	$	(4,110	)	$	—
December 31, 2016	Interest rate swaps	Recurring	$	(4,070	)	$	—	$	(4,070	)	$	—