Pension and Other Post Retirement Benefits (Tables)

12 Months Ended

Dec. 31, 2016

Pension and Other Postretirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

																Other Post-
				Pension Benefits												Retirement Benefits
				2016							2015					2016		2015
Change in benefit obligation				Foreign		Domestic		Total		Foreign		Domestic		Total		Domestic		Domestic
Gross benefit obligation at beginning
	of year			$	92,406	$	66,862	$	159,268	$	106,827	$	70,667	$	177,494	$	5,422	$	6,045
Service cost					2,378		298		2,676		2,799		250		3,049		10		17
Interest cost					2,314		2,114		4,428		2,476		2,541		5,017		142		195
Employee contributions					71		—		71		80		—		80		—		—
Plan settlements					—		—		—		(328)		—		(328)		—		—
Benefits paid					(1,583)		(4,522)		(6,105)		(1,604)		(4,249)		(5,853)		(443)		(533)
Plan expenses and premiums paid					(155)		(275)		(430)		(57)		(250)		(307)		—		—
Actuarial loss (gain)					14,848		2,777		17,625		(7,799)		(2,097)		(9,896)		(401)		(302)
Translation differences and other					(6,788)		—		(6,788)		(9,988)		—		(9,988)		—		—
Gross benefit obligation at end of year				$	103,491	$	67,254	$	170,745	$	92,406	$	66,862	$	159,268	$	4,730	$	5,422
Change in plan assets
Fair value of plan assets at
year	beginning of year			$	76,156	$	46,701	$	122,857	$	86,523	$	49,689	$	136,212	$	—	$	—
Actual return (loss) on plan assets					14,472		2,516		16,988		(2,170)		223		(1,947)		—		—
Employer contributions					3,103		4,777		7,880		1,804		1,288		3,092		443		533
Employee contributions					71		—		71		80		—		80		—		—
Plan settlements					—		—		—		(328)		—		(328)		—		—
Benefits paid					(1,583)		(4,522)		(6,105)		(1,604)		(4,249)		(5,853)		(443)		(533)
Plan expenses and premiums paid					(155)		(275)		(430)		(57)		(250)		(307)		—		—
Translation differences					(5,220)		—		(5,220)		(8,092)		—		(8,092)		—		—
Fair value of plan assets at end of year				$	86,844	$	49,197	$	136,041	$	76,156	$	46,701	$	122,857	$	—	$	—
Net benefit obligation recognized				$	(16,647)	$	(18,057)	$	(34,704)	$	(16,250)	$	(20,161)	$	(36,411)	$	(4,730)	$	(5,422)
Amounts recognized in the balance
	sheet consist of:
		Current liabilities		$	(61)	$	(574)	$	(635)	$	(52)	$	(575)	$	(627)	$	(451)	$	(517)
		Non-current liabilities			(16,586)		(17,483)		(34,069)		(16,198)		(19,586)		(35,784)		(4,279)		(4,905)
Net benefit obligation recognized				$	(16,647)	$	(18,057)	$	(34,704)	$	(16,250)	$	(20,161)	$	(36,411)	$	(4,730)	$	(5,422)
Amounts not yet reflected in net
	periodic benefit costs and included in
	accumulated other comprehensive loss:
		Prior service credit (cost)		$	1,687	$	(122)	$	1,565	$	1,910	$	(185)	$	1,725	$	—	$	—
		Accumulated loss			(20,214)		(33,147)		(53,361)		(20,058)		(31,906)		(51,964)		(581)		(983)
		Accumulated other comprehensive
			loss ("AOCI")		(18,527)		(33,269)		(51,796)		(18,148)		(32,091)		(50,239)		(581)		(983)
		Cumulative employer contributions
			in excess of or (below) net periodic
			benefit cost		1,880		15,212		17,092		1,898		11,930		13,828		(4,149)		(4,439)
Net benefit obligation recognized				$	(16,647)	$	(18,057)	$	(34,704)	$	(16,250)	$	(20,161)	$	(36,411)	$	(4,730)	$	(5,422)

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]

	2016							2015
	Foreign		Domestic		Total		Foreign		Domestic		Total
Projected benefit obligation	$	103,491	$	67,254	$	170,745	$	92,406	$	66,862	$	159,268
Accumulated benefit obligation		100,463		66,676		167,139		90,624		66,862		157,486
Fair value of plan assets		86,844		49,197		136,041		76,156		46,701		122,857

Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]

	2016							2015
	Foreign		Domestic		Total		Foreign		Domestic		Total
Projected benefit obligation	$	103,491	$	67,254	$	170,745	$	92,406	$	66,862	$	159,268
Fair value of plan assets		86,844		49,197		136,041		76,156		46,701		122,857

Schedule of Net Benefit Costs [Table Text Block]

	2016							2015
	Foreign		Domestic		Total		Foreign		Domestic		Total
Service cost	$	2,378	$	298	$	2,676	$	2,799	$	250	$	3,049
Interest cost		2,314		2,114		4,428		2,476		2,541		5,017
Expected return on plan assets		(2,026)		(3,316)		(5,342)		(2,092)		(3,453)		(5,545)
Settlement loss		—		—		—		170		—		170
Actuarial loss amortization		839		2,336		3,175		1,136		2,353		3,489
Prior service (credit) cost
amortization		(164)		63		(101)		(164)		63		(101)
Net periodic benefit cost	$	3,341	$	1,495	$	4,836	$	4,325	$	1,754	$	6,079

		2014
	Foreign		Domestic		Total
Service cost	$	2,626	$	250	$	2,876
Interest cost		3,210		2,823		6,033
Expected return on plan assets		(2,543)		(3,817)		(6,360)
Actuarial loss amortization		1,307		1,757		3,064
Prior service cost amortization		736		63		799
Net periodic benefit cost	$	5,336	$	1,076	$	6,412

		2016		2015		2014
Service cost	$	10	$	17	$	19
Interest cost		142		195		232
Actuarial loss amortization		—		83		65
Net periodic benefit costs	$	152	$	295	$	316

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

			2016							2015
			Foreign		Domestic		Total		Foreign		Domestic		Total
Net loss (gain) arising during
	the period		$	2,401	$	3,576	$	5,977	$	(3,537)	$	1,134	$	(2,403)
Recognition of amortization in net
	periodic benefit cost
		Prior service credit (cost)		164		(63)		101		164		(63)		101
		Actuarial loss		(839)		(2,336)		(3,175)		(1,306)		(2,353)		(3,659)
Effect of exchange rates on amounts
		included in AOCI		(1,347)		—		(1,347)		(2,353)		—		(2,353)
Total recognized in other
		comprehensive loss (income)		379		1,177		1,556		(7,032)		(1,282)		(8,314)
Total recognized in net periodic
	benefit cost and other
	comprehensive loss (income)		$	3,720	$	2,672	$	6,392	$	(2,707)	$	472	$	(2,235)

			2014
				Foreign		Domestic		Total
Net loss arising during period			$	4,973	$	7,290	$	12,263
Effect of plan amendment				242		—		242
Recognition of amortization in net periodic benefit
	cost
		Prior service cost		(736)		(63)		(799)
		Actuarial loss		(1,307)		(1,757)		(3,064)
Effect of exchange rates on amounts included
	in AOCI			(3,076)		—		(3,076)
Total recognized in other comprehensive loss				96		5,470		5,566
Total recognized in net periodic benefit cost and
	other comprehensive loss		$	5,432	$	6,546	$	11,978

			2016		2015		2014
Net (gain) loss arising during period		$	(401)	$	(302)	$	688
Amortization of actuarial loss in net periodic
	benefit costs		—		(83)		(65)
Total recognized in other comprehensive (income)
	loss		(401)		(385)		623
Total recognized in net periodic benefit cost and
	other comprehensive (income) loss	$	(249)	$	(90)	$	939

Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]

							Other Post-
	Pension Plans						Retirement
	Foreign		Domestic		Total		Benefits
Actuarial loss	$	808	$	2,658	$	3,466	$	22
Prior service (credit) cost		(155)		63		(92)		—
	$	653	$	2,721	$	3,374	$	22

Schedule of Assumptions Used [Table Text Block]

					Other Postretirement
	Pension Benefits				Benefits
	2016		2015		2016		2015
U.S. Plans:
Discount rate	3.88	%	4.07	%	3.73	%	3.88	%
Rate of compensation increase	3.63	%	3.63	%	N/A		N/A
Foreign Plans:
Discount rate	2.17	%	2.95	%	N/A		N/A
Rate of compensation increase	2.48	%	2.41	%	N/A		N/A

						Other Postretirement
		Pension Benefits				Benefits
		2016		2015		2016		2015
U.S. Plans:
Discount rate		4.07	%	3.72	%	3.88	%	3.45	%
Expected long-term return on
	plan assets	7.20	%	7.30	%	N/A		N/A
Rate of compensation increase		3.63	%	3.63	%	N/A		N/A
Foreign Plans:
Discount rate		2.95	%	2.51	%	N/A		N/A
Expected long-term return on
	plan assets	2.65	%	2.55	%	N/A		N/A
Rate of compensation increase		2.41	%	3.05	%	N/A		N/A

		2016		2015
Health care cost trend rate for next year		6.70	%	6.70	%
Rate to which the cost trend rate is assumed to decline (the
	ultimate trend rate)	4.50	%	4.50	%
Year that the rate reaches the ultimate trend rate		2037		2037

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]

		1% Point		1% Point
		Increase		Decrease
Effect on total service and interest cost	$	12	$	(10)
Effect on postretirement benefit obligations		352		(308)

Schedule of Allocation of Plan Assets [Table Text Block]

Asset Category		Target		2016		2015
U.S. Plans
Equity securities		61	%	60	%	65	%
Debt securities		32	%	39	%	34	%
Other		7	%	1	%	1	%
	Total	100	%	100	%	100	%
Foreign Plans
Equity securities and other		25	%	24	%	26	%
Debt securities		75	%	76	%	74	%
	Total	100	%	100	%	100	%

						Fair Value Measurements at December 31, 2016
				Total			Using Fair Value Hierarchy
U.S. Pension Assets				Fair Value			Level 1		Level 2		Level 3
Cash and cash equivalents				$	302		$	302	$	—	$	—
Small capitalization common stock					1,279			1,279		—		—
	Subtotal U.S. pension plan assets in fair value hierarchy			$	1,581		$	1,581	$	—	$	—
Commingled funds measured at NAV					46,185
Pooled separate accounts measured at NAV					1,431
		Total U.S. pension plan assets		$	49,197
Foreign Pension Assets
Cash and cash equivalents				$	130		$	130	$	—	$	—
Insurance contract					72,778			—		—		72,778
Diversified equity securities - registered investment companies					7,308			—		7,308		—
Fixed income - foreign registered investment companies					2,753			—		2,753		—
Real estate - registered investment companies					2,041			—		—		2,041
	Sub-total of foreign pension assets in fair value hierarchy			$	85,010		$	130	$	10,061	$	74,819
Commingled funds measured at NAV					1,834
		Total foreign pension assets		$	86,844
			Total pension assets in fair value hierarchy	$	86,591		$	1,711	$	10,061	$	74,819
			Total pension assets measured at NAV		49,450
			Total pension assets	$	136,041

						Fair Value Measurements at December 31, 2015
				Total			Using Fair Value Hierarchy
U.S. Pension Assets				Fair Value			Level 1		Level 2		Level 3
Cash and cash equivalents				$	753		$	753	$	—	$	—
Large capitalization common stock					13,346			13,346		—		—
Large capitalization registered investment companies					6,363			6,363		—		—
Small capitalization common stock					773			773		—		—
Small capitalization registered investment companies					2,333			2,333		—		—
International developed and emerging markets registered
	investment companies				5,166			5,166		—		—
International developed and emerging markets common stock					2,519			2,519		—		—
Fixed income corporate securities					9,601			—		9,601		—
Fixed income registered investment companies					4,147			4,147		—		—
Fixed income U.S. and foreign government securities					308			—		308		—
	Subtotal U.S. pension plan assets in fair value hierarchy			$	45,309		$	35,400	$	9,909	$	—
Pooled separate accounts measured at NAV					1,392
		Total U.S. pension plan assets		$	46,701
Foreign Pension Assets
Cash and cash equivalents				$	7		$	7	$	—	$	—
Insurance contract					62,409			—		—		62,409
Diversified equity securities - registered investment companies					7,180			—		7,180		—
Fixed income - foreign registered investment companies					2,290			—		2,290		—
Real estate - registered investment companies					2,388			—		—		2,388
	Subtotal foreign pension assets in fair value hierarchy			$	74,274		$	7	$	9,470	$	64,797
Commingled funds measured at NAV					1,882
		Total foreign pension plan assets		$	76,156
			Total pension assets in fair value hierarchy	$	119,583		$	35,407	$	19,379	$	64,797
			Total pension assets measured at NAV		3,274
			Total pension assets	$	122,857

Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]

			Insurance		Real Estate
			Contract		Fund		Total
Balance at December 31, 2014		$	72,417	$	478	$	72,895
	Purchases		953		1,937		2,890
	Settlements		(1,239)		—		(1,239)
	Unrealized (losses) gains		(2,402)		60		(2,342)
	Currency translation adjustment		(7,320)		(87)		(7,407)
Balance at December 31, 2015			62,409		2,388		64,797
	Purchases		2,584		—		2,584
	Settlements		(1,350)		—		(1,350)
	Unrealized gains		12,005		56		12,061
	Currency translation adjustment		(2,870)		(403)		(3,273)
Balance at December 31, 2016		$	72,778	$	2,041	$	74,819

Schedule of Expected Benefit Payments [Table Text Block]

							Other Post-
	Pension Benefits						Retirement
	Foreign		Domestic		Total		Benefits
2017	$	1,780	$	4,929	$	6,709	$	451
2018		1,946		4,642		6,588		444
2019		2,094		4,605		6,699		432
2020		2,311		4,354		6,665		407
2021		2,922		4,346		7,268		385
2022 to 2026		16,581		23,445		40,026		1,611