Equity and Noncontrolling Interest (Tables)

6 Months Ended

Jun. 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 March 31, 2016			$	13,236	$	107,950	$	329,684	$	(68,002)	$	8,658	$	391,526
	Net income			—		—		15,015		—		390		15,405
	Amounts reported in other comprehensive
		loss		—		—		—		(3,788)		(153)		(3,941)
	Dividends ($0.345 per share)			—		—		(4,572)		—		—		(4,572)
	Share issuance and equity-based
		compensation plans		14		1,769		—		—		—		1,783
	Excess tax benefit from stock option exercises			—		32		—		—		—		32
Balance at June 30, 2016			$	13,250	$	109,751	$	340,127	$	(71,790)	$	8,895	$	400,233
Balance at March 31, 2015			$	13,332	$	100,947	$	305,902	$	(62,971)	$	7,919	$	365,129
	Net income			—		—		15,038		—		374		15,412
	Amounts reported in other comprehensive
		income (loss)		—		—		—		2,200		(124)		2,076
	Repurchases of common stock			(19)		—		(1,611)		—		—		(1,630)
	Dividends ($0.32 per share)			—		—		(4,269)		—		—		(4,269)
	Disposition of noncontrolling interest			—		—		—		—		(351)		(351)
	Share issuance and equity-based
		compensation plans		24		2,044		—		—		—		2,068
	Excess tax benefit from stock option exercises			—		91		—		—		—		91
Balance at June 30, 2015			$	13,337	$	103,082	$	315,060	$	(60,771)	$	7,818	$	378,526

									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			—		—		27,961		—		788		28,749
	Amounts reported in other comprehensive
		income (loss)		—		—		—		1,526		(91)		1,435
	Repurchases of common stock			(84)		—		(5,775)		—		—		(5,859)
	Dividends ($0.665 per share)			—		—		(8,799)		—		—		(8,799)
	Share issuance and equity-based
		compensation plans		46		3,282		—		—		—		3,328
	Excess tax benefit from stock option exercises			—		136		—		—		—		136
Balance at June 30, 2016			$	13,250	$	109,751	$	340,127	$	(71,790)	$	8,895	$	400,233
Balance at December 31, 2014			$	13,301	$	99,056	$	299,524	$	(54,406)	$	7,660	$	365,135
	Net income			—		—		25,416		—		603		26,019
	Amounts reported in other comprehensive
		loss		—		—		—		(6,365)		(94)		(6,459)
	Repurchases of common stock			(19)		—		(1,611)		—		—		(1,630)
	Dividends ($0.62 per share)			—		—		(8,269)		—		—		(8,269)
	Disposition of noncontrolling interest			—		—		—		—		(351)		(351)
	Share issuance and equity-based
		compensation plans		55		3,648		—		—		—		3,703
	Excess tax benefit from stock option exercises			—		378		—		—		—		378
Balance at June 30, 2015			$	13,337	$	103,082	$	315,060	$	(60,771)	$	7,818	$	378,526

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 March 31, 2016			$	(33,873)	$	(35,064)	$	935	$	(68,002)
	Other comprehensive (loss) income before
		reclassifications		(4,939)		590		320		(4,029)
	Amounts reclassified from AOCI			—		802		(82)		720
	Current period other comprehensive (loss) income			(4,939)		1,392		238		(3,309)
	Related tax amounts			—		(398)		(81)		(479)
	Net current period other comprehensive (loss) income			(4,939)		994		157		(3,788)
Balance at June 30, 2016			$	(38,812)	$	(34,070)	$	1,092	$	(71,790)
Balance at March 31, 2015			$	(25,425)	$	(39,073)	$	1,527	$	(62,971)
	Other comprehensive income (loss) before
		reclassifications		2,592		(847)		(365)		1,380
	Amounts reclassified from AOCI			—		878		(152)		726
	Current period other comprehensive income (loss)			2,592		31		(517)		2,106
	Related tax amounts			—		(82)		176		94
	Net current period other comprehensive income (loss)			2,592		(51)		(341)		2,200
Balance at June 30, 2015			$	(22,833)	$	(39,124)	$	1,186	$	(60,771)

							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		(268)		113		512		357
	Amounts reclassified from AOCI			—		1,600		416		2,016
	Current period other comprehensive (loss) income			(268)		1,713		928		2,373
	Related tax amounts			—		(532)		(315)		(847)
	Net current period other comprehensive (loss) income			(268)		1,181		613		1,526
Balance at June 30, 2016			$	(38,812)	$	(34,070)	$	1,092	$	(71,790)
Balance at December 31, 2014			$	(14,312)	$	(41,551)	$	1,457	$	(54,406)
	Other comprehensive (loss) income before
		reclassifications		(8,521)		1,651		(95)		(6,965)
	Amounts reclassified from AOCI			—		1,759		(316)		1,443
	Current period other comprehensive (loss) income			(8,521)		3,410		(411)		(5,522)
	Related tax amounts			—		(983)		140		(843)
	Net current period other comprehensive (loss) income			(8,521)		2,427		(271)		(6,365)
Balance at June 30, 2015			$	(22,833)	$	(39,124)	$	1,186	$	(60,771)