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Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Summarized quarterly financial data is as follows:


	2020
(In thousands, except per share amounts)	March 31,		June 30,		September 30,		December 31,
Net sales	$	151,778	$	153,133	$	153,505	$	156,264
Gross profit	42,941		38,075		44,156		51,084
Operating income	8,046		6,460		10,246		12,515
Net income	5,846		14,400		6,168		12,158

Earnings per share (1):
Basic	$	0.42	$	1.03	$	0.44	$	0.88
Diluted	$	0.41	$	1.02	$	0.43	$	0.86


	2019
(In thousands, except per share amounts)	March 31,		June 30,		September 30,		December 31,
Net sales	$	184,163	$	193,896	$	200,724	$	174,694
Gross profit	39,874		33,993		46,479		49,857
Operating income (loss)	1,663		(3,926)		6,127		11,451
Net income (loss)	(1,005)		(5,061)		2,669		7,027
Earnings (loss) per share (1):
Basic	$	(0.07)	$	(0.37)	$	0.19	$	0.50
Diluted	$	(0.07)	$	(0.37)	$	0.19	$	0.49

(1)The earnings per common share calculations for each of the quarters were based upon the weighted average number of shares and share equivalents outstanding during each period, and the sum of the quarters may not be equal to the full year earnings per share amounts.