Equity and Noncontrolling Interest (Tables)

3 Months Ended

Mar. 31, 2018

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, 2017			$	13,308	$	93,528	$	365,182	$	(65,100)	$	1,946	$	408,864
	Net income			—		—		12,732		—		55		12,787
	Amounts reported in other comprehensive
		income		—		—		—		6,362		95		6,457
	Dividends ($0.355 per share)			—		—		(4,729)		—		—		(4,729)
	Distributions to noncontrolling affiliate			—		—		—		—		(834)		(834)
	Share issuance and equity-based
		compensation plans		15		203		—		—		—		218
Balance at March 31, 2018			$	13,323	$	93,731	$	373,185	$	(58,738)	$	1,262	$	422,763
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

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, 2017			$	(31,893)	$	(34,093)	$	886	$	(65,100)
	Other comprehensive income (loss) before
		reclassifications		6,764		(697)		(443)		5,624
	Amounts reclassified from AOCI			—		783		(172)		611
	Current period other comprehensive income (loss)			6,764		86		(615)		6,235
	Related tax amounts			—		(2)		129		127
	Net current period other comprehensive income (loss)			6,764		84		(486)		6,362
Balance at March 31, 2018			$	(25,129)	$	(34,009)	$	400	$	(58,738)
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)