Unaudited: Quarterly Results of Operations, Common Stock Price and Dividends (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

	Quarter ended
	March 31		June 30		September 30		December 31
	(In thousands except per share data)
2020
Net sales	$	108,508	$	91,119	$	113,587	$	112,329
Gross margin	$	43,322	$	35,850	$	45,023	$	44,055
Net earnings	$	11,854	$	9,534	$	14,861	$	13,094
Earnings per share:
Basic	$	0.41	$	0.33	$	0.51	$	0.45
Diluted	$	0.41	$	0.33	$	0.51	$	0.45
Dividends declared	$	0.17	$	0.17	$	0.18	$	0.18
Stock price:
High	$	70.83	$	68.01	$	68.25	$	96.00
Low	$	41.50	$	47.00	$	59.53	$	64.96
Quarter-end close	$	53.60	$	62.92	$	65.37	$	94.06
2019
Net sales	$	104,881	$	103,542	$	108,646	$	107,556
Gross margin	$	40,457	$	40,276	$	41,670	$	41,125
Net earnings	$	10,824	$	11,358	$	12,721	$	12,274
Earnings per share:
Basic	$	0.37	$	0.39	$	0.44	$	0.42
Diluted	$	0.37	$	0.39	$	0.44	$	0.42
Dividends declared	$	0.15	$	0.15	$	0.17	$	0.17
Stock price:
High	$	61.57	$	60.28	$	60.52	$	66.64
Low	$	47.59	$	51.56	$	49.66	$	50.67
Quarter-end close	$	55.64	$	59.69	$	53.70	$	64.93