Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net sales	$ 123,326	$ 127,737	$ 394,960	$ 381,341
Costs and expenses:
Cost of goods sold	77,512	80,285	252,945	244,500
Selling and administrative expenses	35,059	34,917	104,076	98,704
Other periodic pension costs	459	212	1,328	830
Interest expense	320	239	925	1,732
Cost and Expenses, Including Interest Expense, Total	113,350	115,653	366,219	345,766
Income before taxes on income	9,976	12,084	28,741	35,575
Income tax expense	1,780	2,140	3,690	7,090
Net income	8,196	9,944	25,051	28,485
Pension plan termination charge	$ 0	$ 0	$ 6,945	$ 0
Net income per share:
Net income per share, basic (in dollars per share)	$ 0.53	$ 0.66	$ 1.63	$ 1.89
Net income per share, diluted (in dollars per share)	$ 0.51	$ 0.63	$ 1.56	$ 1.85
Weighted average shares outstanding during the period:
Weighted average number of shares outstanding during the period, basic (in shares)	15,528,534	15,084,300	15,394,427	15,041,738
Weighted average number of shares outstanding during the period, diluted (in shares)	16,099,850	15,711,122	16,059,686	15,361,035
Other comprehensive income (loss), net of tax:
Recognition of net losses included in net periodic pension costs	$ 278	$ 232	$ 1,383	$ 712
Recognition of settlement loss included in net periodic pension costs	0	62	0	314
Loss on cash flow hedging activities	(5)	(5)	(16)	(16)
Foreign currency translation adjustment	(570)	(145)	(184)	(1,546)
Other comprehensive income	(297)	144	6,413	(536)
Comprehensive income	$ 7,899	$ 10,088	$ 31,464	$ 27,949
Cash dividends per common share (in dollars per share)	$ 0.12	$ 0.20	$ 0.34	$ 0.30
Net sales	$ 123,326	$ 127,737	$ 394,960	$ 381,341
Recognition of net losses included in pension plan termination charges			$ 5,230	$ 0