Equity and Noncontrolling Interest (Tables)

3 Months Ended

Mar. 31, 2019

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, 2018			$	13,338	$	97,304	$	405,125	$	(80,715)	$	1,317	$	436,369
	Cumulative effect of an accounting change			—		—		(44)		—		—		(44)
Balance at January 1, 2019				13,338		97,304		405,081		(80,715)		1,317		436,325
	Net income			—		—		13,844		—		56		13,900
	Amounts reported in other comprehensive
		income (loss)		—		—		—		1,548		(1)		1,547
	Dividends ($0.37 per share)			—		—		(4,933)		—		—		(4,933)
	Share issuance and equity-based
		compensation plans		(4)		(472)		—		—		—		(476)
Balance at March 31, 2019			$	13,334	$	96,832	$	413,992	$	(79,167)	$	1,372	$	446,363
Balance at December 31, 2017			$	13,308	$	93,528	$	365,936	$	(65,100)	$	1,946	$	409,618
	Cumulative effect of an accounting change			—		—		(754)		—		—		(754)
Balance at January 1, 2018				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
		shareholders		—		—		—		—		(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

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

							Unrealized
			Currency		Defined		Gain (Loss) in
			Translation		Benefit		Available-for-
			Adjustments		Retirement Plans		Sale Securities		Total
Balance at December 31, 2018			$	(49,322)	$	(30,551)	$	(842)	$	(80,715)
	Other comprehensive (loss) income before
		reclassifications		(431)		160		1,707		1,436
	Amounts reclassified from AOCI			—		733		(96)		637
	Current period other comprehensive (loss) income			(431)		893		1,611		2,073
	Related tax amounts			—		(187)		(338)		(525)
	Net current period other comprehensive (loss) income			(431)		706		1,273		1,548
Balance at March 31, 2019			$	(49,753)	$	(29,845)	$	431	$	(79,167)
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)