Equity and Noncontrolling Interest (Tables)

9 Months Ended

Sep. 30, 2016

Stockholders Equity [Abstract]

Schedule of Stockholders Equity [Table Text Block]

									Accumulated
					Capital in				Other
			Common		Excess of		Retained		Comprehensive		Noncontrolling
			Stock		Par Value		Earnings		Loss		Interest		Total
Balance at June 30, 2016			$	13,250	$	109,751	$	340,127	$	(71,790)	$	8,895	$	400,233
	Net income			—		—		16,008		—		343		16,351
	Amounts reported in other comprehensive
		(loss) income		—		—		—		(237)		177		(60)
	Dividends ($0.345 per share)			—		—		(4,575)		—		—		(4,575)
	Acquisition of noncontrolling interest			—		—		—		—		40		40
	Share issuance and equity-based
		compensation plans		7		1,671		—		—		—		1,678
	Excess tax benefit from stock option exercises			—		31		—		—		—		31
Balance at September 30, 2016			$	13,257	$	111,453	$	351,560	$	(72,027)	$	9,455	$	413,698
Balance at June 30, 2015			$	13,337	$	103,082	$	315,060	$	(60,771)	$	7,818	$	378,526
	Net income			—		—		14,371		—		464		14,835
	Amounts reported in other comprehensive
		loss		—		—		—		(10,994)		(367)		(11,361)
	Repurchases of common stock			(40)		—		(3,319)		—		—		(3,359)
	Dividends ($0.32 per share)			—		—		(4,256)		—		—		(4,256)
	Share issuance and equity-based
		compensation plans		9		1,735		—		—		—		1,744
	Excess tax benefit from stock option exercises			—		22		—		—		—		22
Balance at September 30, 2015			$	13,306	$	104,839	$	321,856	$	(71,765)	$	7,915	$	376,151

									Accumulated
					Capital in				Other
			Common		Excess of		Retained		Comprehensive		Noncontrolling
			Stock		Par Value		Earnings		Loss		Interest		Total
Balance at December 31, 2015			$	13,288	$	106,333	$	326,740	$	(73,316)	$	8,198	$	381,243
	Net income			—		—		43,969		—		1,131		45,100
	Amounts reported in other comprehensive
		income		—		—		—		1,289		86		1,375
	Repurchases of common stock			(84)		—		(5,775)		—		—		(5,859)
	Dividends ($1.01 per share)			—		—		(13,374)		—		—		(13,374)
	Acquisition of noncontrolling interest			—		—		—		—		40		40
	Share issuance and equity-based
		compensation plans		53		4,953		—		—		—		5,006
	Excess tax benefit from stock option exercises			—		167		—		—		—		167
Balance at September 30, 2016			$	13,257	$	111,453	$	351,560	$	(72,027)	$	9,455	$	413,698
Balance at December 31, 2014			$	13,301	$	99,056	$	299,524	$	(54,406)	$	7,660	$	365,135
	Net income			—		—		39,787		—		1,067		40,854
	Amounts reported in other comprehensive
		loss		—		—		—		(17,359)		(461)		(17,820)
	Repurchases of common stock			(59)		—		(4,930)		—		—		(4,989)
	Dividends ($0.94 per share)			—		—		(12,525)		—		—		(12,525)
	Disposition of noncontrolling interest			—		—		—		—		(351)		(351)
	Share issuance and equity-based
		compensation plans		64		5,383		—		—		—		5,447
	Excess tax benefit from stock option exercises			—		400		—		—		—		400
Balance at September 30, 2015			$	13,306	$	104,839	$	321,856	$	(71,765)	$	7,915	$	376,151

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

							Unrealized
			Currency		Defined		Gain (Loss) in
			Translation		Benefit		Available-for-
			Adjustments		Pension Plans		Sale Securities		Total
Balance at June 30, 2016			$	(38,812)	$	(34,070)	$	1,092	$	(71,790)
	Other comprehensive (loss) income before
		reclassifications		(892)		3		575		(314)
	Amounts reclassified from AOCI			—		713		(280)		433
	Current period other comprehensive (loss) income			(892)		716		295		119
	Related tax amounts			—		(256)		(100)		(356)
	Net current period other comprehensive (loss) income			(892)		460		195		(237)
Balance at September 30, 2016			$	(39,704)	$	(33,610)	$	1,287	$	(72,027)
Balance at June 30, 2015			$	(22,833)	$	(39,124)	$	1,186	$	(60,771)
	Other comprehensive (loss) income before
		reclassifications		(11,013)		170		(861)		(11,704)
	Amounts reclassified from AOCI			—		849		(179)		670
	Current period other comprehensive (loss) income			(11,013)		1,019		(1,040)		(11,034)
	Related tax amounts			—		(313)		353		40
	Net current period other comprehensive (loss) income			(11,013)		706		(687)		(10,994)
Balance at September 30, 2015			$	(33,846)	$	(38,418)	$	499	$	(71,765)

							Unrealized
			Currency		Defined		Gain (Loss) in
			Translation		Benefit		Available-for-
			Adjustments		Pension Plans		Sale Securities		Total
Balance at December 31, 2015			$	(38,544)	$	(35,251)	$	479	$	(73,316)
	Other comprehensive (loss) income before
		reclassifications		(1,160)		116		1,087		43
	Amounts reclassified from AOCI			—		2,313		136		2,449
	Current period other comprehensive (loss) income			(1,160)		2,429		1,223		2,492
	Related tax amounts			—		(788)		(415)		(1,203)
	Net current period other comprehensive (loss) income			(1,160)		1,641		808		1,289
Balance at September 30, 2016			$	(39,704)	$	(33,610)	$	1,287	$	(72,027)
Balance at December 31, 2014			$	(14,312)	$	(41,551)	$	1,457	$	(54,406)
	Other comprehensive (loss) income before
		reclassifications		(19,534)		1,821		(956)		(18,669)
	Amounts reclassified from AOCI			—		2,608		(495)		2,113
	Current period other comprehensive (loss) income			(19,534)		4,429		(1,451)		(16,556)
	Related tax amounts			—		(1,296)		493		(803)
	Net current period other comprehensive (loss) income			(19,534)		3,133		(958)		(17,359)
Balance at September 30, 2015			$	(33,846)	$	(38,418)	$	499	$	(71,765)