Stockholders' Equity and Earnings Per Share (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	$ 105,407	$ 87,859
Interest expense	1,998	3,440
Income tax expense (benefit)	(7,378)	(639)
Net income	34,785	30,337
Pension and postretirement plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period	(489)	(582)
Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period	489	(1,787)
Reclassification out of accumulated other comprehensive income | Loss (gain) on cash flow hedging
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before income tax provision (benefit)	0	(3,624)
Income tax expense (benefit)	0	1,255
Net income	0	(2,369)
Reclassification out of accumulated other comprehensive income | Pension and postretirement plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before income tax provision (benefit)	574	945
Income tax expense (benefit)	(85)	(363)
Net income	489	582
Reclassification out of accumulated other comprehensive income | Actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Pension and postretirement plan	580	955
Reclassification out of accumulated other comprehensive income | Prior-service credit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Pension and postretirement plan	(6)	(10)
Foreign currency exchange contracts | Reclassification out of accumulated other comprehensive income | Loss (gain) on cash flow hedging
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	0	(158)
Interest rate swap agreements | Reclassification out of accumulated other comprehensive income | Loss (gain) on cash flow hedging
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 0	$ (3,466)