Equity and Noncontrolling Interest (Tables)

9 Months Ended

Sep. 30, 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 June 30, 2018			$	13,331	$	94,984	$	387,498	$	(74,351)	$	1,215	$	422,677
	Net income			—		—		19,690		—		81		19,771
	Amounts reported in other comprehensive
		loss		—		—		—		(5,981)		(38)		(6,019)
	Dividends ($0.37 per share)			—		—		(4,933)		—		—		(4,933)
	Share issuance and equity-based
		compensation plans		3		1,137		—		—		—		1,140
Balance at September 30, 2018			$	13,334	$	96,121	$	402,255	$	(80,332)	$	1,258	$	432,636
Balance at June 30, 2017			$	13,310	$	113,747	$	374,001	$	(72,938)	$	11,474	$	439,594
	Net income			—		—		11,142		—		562		11,704
	Amounts reported in other comprehensive
		income (loss)		—		—		—		6,265		(153)		6,112
	Dividends ($0.355 per share)			—		—		(4,722)		—		—		(4,722)
	Share issuance and equity-based
		compensation plans		(11)		(618)		—		—		—		(629)
Balance at September 30, 2017			$	13,299	$	113,129	$	380,421	$	(66,673)	$	11,883	$	452,059

									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			—		—		51,668		—		260		51,928
	Amounts reported in other comprehensive
		loss		—		—		—		(15,232)		(114)		(15,346)
	Dividends ($1.095 per share)			—		—		(14,595)		—		—		(14,595)
	Distributions to noncontrolling affiliate			—		—		—		—		(834)		(834)
	Share issuance and equity-based
		compensation plans		26		2,593		—		—		—		2,619
Balance at September 30, 2018			$	13,334	$	96,121	$	402,255	$	(80,332)	$	1,258	$	432,636
Balance at December 31, 2016			$	13,278	$	112,475	$	364,414	$	(87,407)	$	9,846	$	412,606
	Net income			—		—		30,040		—		1,619		31,659
	Amounts reported in other comprehensive
		income		—		—		—		20,734		418		21,152
	Dividends ($1.055 per share)			—		—		(14,033)		—		—		(14,033)
	Share issuance and equity-based
		compensation plans		21		654		—		—		—		675
Balance at September 30, 2017			$	13,299	$	113,129	$	380,421	$	(66,673)	$	11,883	$	452,059

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

							Unrealized
			Currency		Defined		(Loss) Gain in
			Translation		Benefit		Available-for-
			Adjustments		Pension Plans		Sale Securities		Total
Balance at June 30, 2018			$	(42,069)	$	(32,513)	$	231	$	(74,351)
	Other comprehensive (loss) income before
		reclassifications		(6,821)		99		274		(6,448)
	Amounts reclassified from AOCI			—		756		(69)		687
	Current period other comprehensive (loss) income			(6,821)		855		205		(5,761)
	Related tax amounts			—		(177)		(43)		(220)
	Net current period other comprehensive (loss) income			(6,821)		678		162		(5,981)
Balance at September 30, 2018			$	(48,890)	$	(31,835)	$	393	$	(80,332)
Balance at June 30, 2017			$	(40,062)	$	(34,059)	$	1,183	$	(72,938)
	Other comprehensive income (loss) before
		reclassifications		5,917		(611)		688		5,994
	Amounts reclassified from AOCI			—		784		(254)		530
	Current period other comprehensive income			5,917		173		434		6,524
	Related tax amounts			—		(111)		(148)		(259)
	Net current period other comprehensive income			5,917		62		286		6,265
Balance at September 30, 2017			$	(34,145)	$	(33,997)	$	1,469	$	(66,673)

							Unrealized
			Currency		Defined		(Loss) Gain 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 (loss) income before
		reclassifications		(16,997)		563		(1,064)		(17,498)
	Amounts reclassified from AOCI			—		2,318		440		2,758
	Current period other comprehensive (loss) income			(16,997)		2,881		(624)		(14,740)
	Related tax amounts			—		(623)		131		(492)
	Net current period other comprehensive (loss) income			(16,997)		2,258		(493)		(15,232)
Balance at September 30, 2018			$	(48,890)	$	(31,835)	$	393	$	(80,332)
Balance at December 31, 2016			$	(52,255)	$	(36,168)	$	1,016	$	(87,407)
	Other comprehensive income (loss) before
		reclassifications		18,110		(684)		1,578		19,004
	Amounts reclassified from AOCI			—		4,284		(889)		3,395
	Current period other comprehensive income			18,110		3,600		689		22,399
	Related tax amounts			—		(1,429)		(236)		(1,665)
	Net current period other comprehensive income			18,110		2,171		453		20,734
Balance at September 30, 2017			$	(34,145)	$	(33,997)	$	1,469	$	(66,673)