Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net sales	$ 140,847	$ 94,245
Costs and expenses:
Cost of goods sold	91,804	60,794
Selling and administrative expenses	35,111	27,489
Other periodic pension costs	429	285
Interest expense	275	1,060
Costs and Expenses, Excluding Gain on Sale of Property Plant and Equipment	127,619	89,628
Income before taxes on income	13,228	4,617
Income tax expense	2,750	1,250
Net income	$ 10,478	$ 3,367
Net income per share:
Net income per share, basic (in dollars per share)	$ 0.69	$ 0.22
Net income per share, diluted (in dollars per share)	$ 0.66	$ 0.22
Weighted average shares outstanding during the period:
Weighted average number of shares outstanding during the period, basic (in shares)	15,221,336	15,024,851
Weighted average number of shares outstanding during the period, diluted (in shares)	15,991,474	15,200,898
Other comprehensive income (loss), net of tax:
Recognition of net losses included in net periodic pension costs	$ 714	$ 243
Recognition of settlement loss included in net periodic pension costs	0	105
Loss on cash flow hedging activities	(5)	(5)
Foreign currency translation adjustment	(647)	(1,239)
Other comprehensive income (loss)	62	(896)
Comprehensive income	$ 10,540	$ 2,471
Cash dividends per common share (in dollars per share)	$ 0.10	$ 0.10