Stockholders' Equity and Earnings Per Share (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 56,818
Reclassification due to adoption of ASU 2018-02		$ 0
Other comprehensive income (loss)	164	(3,571)	$ 2,638
Reclassification adjustment to net income	1,217	942	1,427
Tax effects	(412)	439	(1,709)
Ending balance	36,266	56,818
Foreign Currency
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(8,652)	(7,573)	(8,221)
Reclassification due to adoption of ASU 2018-02		0
Other comprehensive income (loss)	481	(1,162)	648
Reclassification adjustment to net income	0	0	0
Tax effects	(50)	83	0
Ending balance	(8,221)	(8,652)	(7,573)
Deferred Gain (Loss) on Cash Flow Hedging
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	879	508	616
Reclassification due to adoption of ASU 2018-02		118
Other comprehensive income (loss)	(2,199)	174	(456)
Reclassification adjustment to net income	490	213	916
Tax effects	489	(134)	(568)
Ending balance	(341)	879	508
Pension Plan Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(9,328)	(6,678)	(8,494)
Reclassification due to adoption of ASU 2018-02		(1,286)
Other comprehensive income (loss)	1,882	(2,583)	2,446
Reclassification adjustment to net income	727	729	511
Tax effects	(851)	490	(1,141)
Ending balance	(7,570)	(9,328)	(6,678)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(17,101)	(13,743)	(16,099)
Reclassification due to adoption of ASU 2018-02		(1,168)
Ending balance	$ (16,132)	$ (17,101)	$ (13,743)