Equity and Noncontrolling Interest (Tables)

3 Months Ended

Mar. 31, 2017

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 December 31, 2016			$	13,278	$	112,475	$	364,414	$	(87,407)	$	9,846	$	412,606
	Net income			—		—		6,992		—		622		7,614
	Amounts reported in other comprehensive
		income		—		—		—		5,446		520		5,966
	Dividends ($0.345 per share)			—		—		(4,587)		—		—		(4,587)
	Share issuance and equity-based
		compensation plans		13		363		—		—		—		376
Balance at March 31, 2017			$	13,291	$	112,838	$	366,819	$	(81,961)	$	10,988	$	421,975
Balance at December 31, 2015			$	13,288	$	106,333	$	326,740	$	(73,316)	$	8,198	$	381,243
	Net income			—		—		12,946		—		398		13,344
	Amounts reported in other comprehensive
		income		—		—		—		5,314		62		5,376
	Repurchases of common stock			(84)		—		(5,775)		—		—		(5,859)
	Dividends ($0.32 per share)			—		—		(4,227)		—		—		(4,227)
	Share issuance and equity-based
		compensation plans		32		1,513		—		—		—		1,545
	Excess tax benefit from stock option exercises			—		104		—		—		—		104
Balance at March 31, 2016			$	13,236	$	107,950	$	329,684	$	(68,002)	$	8,658	$	391,526

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 December 31, 2016			$	(52,255)	$	(36,168)	$	1,016	$	(87,407)
	Other comprehensive income (loss) before
		reclassifications		4,928		(341)		665		5,252
	Amounts reclassified from AOCI			—		850		(360)		490
	Current period other comprehensive income			4,928		509		305		5,742
	Related tax amounts			—		(191)		(105)		(296)
	Net current period other comprehensive income			4,928		318		200		5,446
Balance at March 31, 2017			$	(47,327)	$	(35,850)	$	1,216	$	(81,961)
Balance at December 31, 2015			$	(38,544)	$	(35,251)	$	479	$	(73,316)
	Other comprehensive income (loss) before
		reclassifications		4,671		(477)		192		4,386
	Amounts reclassified from AOCI			—		798		498		1,296
	Current period other comprehensive income			4,671		321		690		5,682
	Related tax amounts			—		(134)		(234)		(368)
	Net current period other comprehensive income			4,671		187		456		5,314
Balance at March 31, 2016			$	(33,873)	$	(35,064)	$	935	$	(68,002)