Equity and Noncontrolling Interest (Tables)

6 Months Ended

Jun. 30, 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 March 31, 2019			$	13,334	$	96,832	$	413,992	$	(79,167)	$	1,372	$	446,363
	Net income			—		—		15,591		—		58		15,649
	Amounts reported in other comprehensive
		income		—		—		—		286		24		310
	Dividends ($0.385 per share)			—		—		(5,135)		—		—		(5,135)
	Share issuance and equity-based
		compensation plans		4		770		—		—		—		774
Balance at June 30, 2019			$	13,338	$	97,602	$	424,448	$	(78,881)	$	1,454	$	457,961
Balance at March 31, 2018			$	13,323	$	93,731	$	373,185	$	(58,738)	$	1,262	$	422,763
	Net income			—		—		19,246		—		124		19,370
	Amounts reported in other comprehensive
		loss		—		—		—		(15,613)		(171)		(15,784)
	Dividends ($0.37 per share)			—		—		(4,933)		—		—		(4,933)
	Share issuance and equity-based
		compensation plans		8		1,253		—		—		—		1,261
Balance at June 30, 2018			$	13,331	$	94,984	$	387,498	$	(74,351)	$	1,215	$	422,677

									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			—		—		29,435		—		114		29,549
	Amounts reported in other comprehensive
		income		—		—		—		1,834		23		1,857
	Dividends ($0.755 per share)			—		—		(10,068)		—		—		(10,068)
	Share issuance and equity-based
		compensation plans		—		298		—		—		—		298
Balance at June 30, 2019			$	13,338	$	97,602	$	424,448	$	(78,881)	$	1,454	$	457,961
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			—		—		31,978		—		179		32,157
	Amounts reported in other comprehensive
		loss		—		—		—		(9,251)		(76)		(9,327)
	Dividends ($0.725 per share)			—		—		(9,662)		—		—		(9,662)
	Distributions to noncontrolling affiliate			—		—		—		—		(834)		(834)
	Share issuance and equity-based
		compensation plans		23		1,456		—		—		—		1,479
Balance at June 30, 2018			$	13,331	$	94,984	$	387,498	$	(74,351)	$	1,215	$	422,677

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, 2019			$	(49,753)	$	(29,845)	$	431	$	(79,167)
	Other comprehensive (loss) income before
		reclassifications		(543)		(79)		432		(190)
	Amounts reclassified from AOCI			—		732		(43)		689
	Current period other comprehensive (loss) income			(543)		653		389		499
	Related tax amounts			—		(131)		(82)		(213)
	Net current period other comprehensive (loss) income			(543)		522		307		286
Balance at June 30, 2019			$	(50,296)	$	(29,323)	$	738	$	(78,881)
Balance at March 31, 2018			$	(25,129)	$	(34,009)	$	400	$	(58,738)
	Other comprehensive (loss) income before
		reclassifications		(16,940)		1,161		(895)		(16,674)
	Amounts reclassified from AOCI			—		779		681		1,460
	Current period other comprehensive (loss) income			(16,940)		1,940		(214)		(15,214)
	Related tax amounts			—		(444)		45		(399)
	Net current period other comprehensive (loss) income			(16,940)		1,496		(169)		(15,613)
Balance at June 30, 2018			$	(42,069)	$	(32,513)	$	231	$	(74,351)

							Unrealized
			Currency		Defined		(Loss) Gain in
			Translation		Benefit		Available-for-
			Adjustments		Pension Plans		Sale Securities		Total
Balance at December 31, 2018			$	(49,322)	$	(30,551)	$	(842)	$	(80,715)
	Other comprehensive (loss) income before
		reclassifications		(974)		81		2,139		1,246
	Amounts reclassified from AOCI			—		1,465		(139)		1,326
	Current period other comprehensive (loss) income			(974)		1,546		2,000		2,572
	Related tax amounts			—		(318)		(420)		(738)
	Net current period other comprehensive (loss) income			(974)		1,228		1,580		1,834
Balance at June 30, 2019			$	(50,296)	$	(29,323)	$	738	$	(78,881)
Balance at December 31, 2017			$	(31,893)	$	(34,093)	$	886	$	(65,100)
	Other comprehensive (loss) income before
		reclassifications		(10,176)		464		(1,338)		(11,050)
	Amounts reclassified from AOCI			—		1,562		509		2,071
	Current period other comprehensive (loss) income			(10,176)		2,026		(829)		(8,979)
	Related tax amounts			—		(446)		174		(272)
	Net current period other comprehensive (loss) income			(10,176)		1,580		(655)		(9,251)
Balance at June 30, 2018			$	(42,069)	$	(32,513)	$	231	$	(74,351)