Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net sales	$ 89,466	$ 95,870	$ 268,288	$ 251,349
Costs and expenses:
Cost of goods sold	58,015	62,070	174,226	163,396
Selling and administrative expenses	25,260	25,482	78,008	69,991
Other periodic pension costs	476	96	1,282	289
Interest expense	1,085	940	3,514	1,974
	84,836	88,588	257,030	235,650
Income before taxes on income	4,630	7,282	11,258	15,699
Income tax expense	709	1,160	2,180	3,310
Net income	$ 3,921	$ 6,122	$ 9,078	$ 12,389
Net income per share:
Net income per share, basic (in dollars per share)	$ 0.26	$ 0.41	$ 0.61	$ 0.83
Net income per share, diluted (in dollars per share)	$ 0.26	$ 0.39	$ 0.59	$ 0.80
Weighted average number of shares outstanding during the period
Weighted average number of shares outstanding during the period, basic (in shares)	14,947,552	15,010,660	14,942,565	14,929,513
Weighted average number of shares outstanding during the period, diluted (in shares)	15,266,850	15,499,894	15,272,287	15,505,642
Other comprehensive income, net of tax:
Recognition of net losses included in net periodic pension costs	$ 236	$ 216	$ 739	$ 647
Recognition of settlement loss included in net periodic pension costs	213		459
Gain on cash flow hedging activities	(5)	(3)	(16)	209
Foreign currency translation adjustment	(316)	(180)	(295)	(637)
Other comprehensive income	128	33	887	219
Comprehensive income	$ 4,049	$ 6,155	$ 9,965	$ 12,608
Cash dividends per common share (in dollars per share)	$ 0.10	$ 0.10	$ 0.30	$ 0.29
Net sales	$ 89,466	$ 95,870	$ 268,288	$ 251,349
Loss (gain) on cash flow hedging activities	$ (5)	$ (3)	$ (16)	$ 209