QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

(In thousands, except per share data)

	2020								2019
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	174,436	$	173,355	$	175,140	$	180,713	$	157,029	$	161,554	$	158,595	$	166,527
Gross margin	55,331		55,380		56,368		56,818		49,095		53,918		54,008		54,346
Earnings before income taxes	24,490		25,973		27,907		28,047		24,793		24,881		24,436		22,368
Net earnings	19,768		21,125		21,568		22,162		18,783		19,829		20,676		20,383
Basic net earnings per common share	$	.62	$	.66	$	.67	$	.69	$	.58	$	.62	$	.64	$	.64
Diluted net earnings per common share	$	.61	$	.65	$	.66	$	.68	$	.58	$	.61	$	.64	$	.63