Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2016

Compensation And Retirement Disclosure [Abstract]

The net periodic pension cost consisted of the following components (in thousands):

	Year Ended December 31,
	2017			2016			2015
Components of the net periodic pension cost:
Interest cost	$	991		$	1,232		$	1,340
Expected return on plan assets		(1,665	)		(1,566	)		(1,844	)
Amortization of actuarial losses		1,045			726			875
Net periodic pension cost	$	371		$	392		$	371

Actuarial Assumptions used to Compute net Periodic Pension Cost and Funded Status

The actuarial assumptions used to compute the net periodic pension cost for the years ended December 31, 2017, 2016 and 2015, respectively, were as follows:

	Year Ended December 31,
	2017			2016			2015
Weighted-average discount rate		2.6	%		3.8	%		3.5	%
Weighted-average long-term rate of return on plan assets		5.2	%		5.3	%		5.6	%

The actuarial assumptions used to compute the benefit obligations as of December 31, 2017 and 2016, respectively, were as follows:

	December 31,
	2017			2016
Weighted-average discount rate		2.4	%		2.6	%
Rate of inflation		2.9	%		3.0	%

Reconciliation of Benefit Obligations and Plan Assets of U.K. Plan

The following table provides a reconciliation of benefit obligations and plan assets of the U.K. Plan (in thousands):

	December 31,
	2017			2016
Change in benefit obligation:
Projected benefit obligation at beginning of year	$	37,261		$	35,914
Interest cost		991			1,232
Actuarial (gains) losses		(27	)		7,425
Benefits paid		(1,313	)		(809	)
Foreign currency exchange rate changes		3,417			(6,501	)
Projected benefit obligation at end of year	$	40,329		$	37,261
Accumulated benefit obligation at end of year	$	40,329		$	37,261
Change in plan assets:
Fair value of plan assets at beginning of year	$	31,304		$	32,374
Actual return on plan assets		2,605			4,522
Employer contributions		887			868
Benefits paid		(1,313	)		(809	)
Foreign currency exchange rate changes		2,993			(5,651	)
Fair value of plan assets at end of year	$	36,476		$	31,304
Funded status at end of year	$	(3,853	)	$	(5,957	)
Amounts included in accumulated other comprehensive loss not yet recognized in net periodic pension cost:
Net actuarial losses at beginning of year	$	(11,697	)	$	(9,874	)
Net actuarial gains (losses) during the year		967			(4,469	)
Amounts reclassified from accumulated other comprehensive income to income before income taxes		1,045			726
Foreign currency exchange rate changes		(808	)		1,920
Net actuarial loss	$	(10,493	)	$	(11,697	)
Amounts expected to be amortized from accumulated other comprehensive loss into net periodic pension cost over the next fiscal year consists of:
Net actuarial loss	$	957		$	1,148

The funded status of the U.K. Plan is included in other long term liabilities in the accompanying consolidated balance sheets.

Expected Future Benefit Payments

The following table reflects the total expected benefit payments to plan participants and have been estimated based on the same assumptions used to measure the Company’s benefit obligations as of December 31, 2017 (in thousands):

	Amount
2018	$	768
2019		999
2020		1,234
2021		1,430
2022		1,169
2023-2026		8,320
Total	$	13,920

Summary of Fair Value of Plan Assets by Asset Category

The following table summarizes the fair values of Plan assets by asset category as of December 31, 2017 (in thousands):

Asset Category	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Not Subject to Leveling
Mutual Funds:
Balanced (1)	$	26,816	$	—	$	—	$	—	$	26,816
Fixed income (2)		9,524		—		—		—		9,524
Cash		136		136		—		—		—
Total	$	36,476	$	136	$	—	$	—	$	36,340

(1)	This class comprises a diversified portfolio of global investments which seeks a balanced return between capital growth and fixed income and is allocated on a weighted average basis as follows: equities (38%), bonds (27%), other assets (31%) and cash (4%).

(2)	This class comprises a diversified portfolio of global investments which seeks fixed income growth and is allocated on a weighted average basis as follows: bonds (92%) and cash (8%).

The following table summarizes the fair values of Plan assets by asset category as of December 31, 2016 (in thousands):

Asset Category	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Not Subject to Leveling
Mutual Funds:
Balanced (1)	$	23,317	$	—	$	—	$	—	$	23,317
Growth (2)		3,239		—		—		—		3,239
Fixed income (3)		4,512		—		—		—		4,512
Cash		236		236		—		—		—
Total	$	31,304	$	236	$	—	$	—	$	31,068

(1)	This class comprises a diversified portfolio of global investments which seeks a balanced return between capital growth and fixed income and is allocated on a weighted average basis as follows: equities (34%), bonds (36%), other assets (27%) and cash (3%).

(2)	This class comprises a diversified portfolio of global investments which seeks long-term capital growth and is allocated on a weighted average basis as follows: equities (59%), bonds (16%), other assets (22%), and cash (3%).

(3)	This class comprises a diversified portfolio of global investments which seeks fixed income growth and is allocated on a weighted average basis as follows: bonds (93%), other assets (1%) and cash (6%).