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

12 Months Ended

Dec. 31, 2018

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)
2018
Net sales	$	105,041	$	113,648	$	110,630	$	104,413
Gross margin	$	36,748	$	41,504	$	43,946	$	40,151
Net earnings	$	7,546	$	6,154	$	2,851	$	11,239
Earnings per share:
Basic	$	0.26	$	0.21	$	0.10	$	0.39
Diluted	$	0.26	$	0.21	$	0.10	$	0.39
Dividends declared	$	0.13	$	0.13	$	0.15	$	0.15
Stock price:
High	$	51.05	$	47.25	$	56.40	$	57.12
Low	$	45.45	$	41.00	$	50.75	$	46.70
Quarter-end close	$	47.15	$	44.70	$	52.95	$	49.21
2017
Net sales	$	101,606	$	104,176	$	100,008	$	96,650
Gross margin	$	38,650	$	41,054	$	37,039	$	39,003
Net earnings	$	8,749	$	10,614	$	7,975	$	7,233
Earnings per share:
Basic	$	0.30	$	0.37	$	0.28	$	0.25
Diluted	$	0.30	$	0.36	$	0.27	$	0.25
Dividends declared	$	0.115	$	0.115	$	0.130	$	0.130
Stock price:
High	$	39.85	$	41.58	$	49.45	$	52.10
Low	$	34.40	$	35.15	$	39.10	$	42.00
Quarter-end close	$	36.75	$	39.85	$	49.00	$	47.80