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Business Segments (Reconciliation of Operating Profit (Loss) from Segments to Consolidated) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting [Abstract]
Profit for reportable segments	$ 7,495	$ 11,176	$ 32,847	$ 27,837
Interest expense - net	(1,079)	(1,296)	(4,031)	(4,813)
Other income (expense) - net	421	(157)	823	320
Unallocated corporate expenses and other unallocated charges	(3,722)	(3,297)	(10,947)	(12,089)
Income before income taxes	$ 3,115	$ 6,426	$ 18,692	$ 11,255

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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