Quarterly Results of Operations (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Results of Operations

	Quarter ended
	March 31		June 30		September 30		December 31
	(In millions, except per share amounts)
2018:
Net sales	$	28.4	$	32.4	$	30.0	$	27.4
Gross margin		9.5		11.2		9.6		7.9
Operating income		4.4		6.0		4.5		2.9
Net income		3.7		5.0		3.9		2.7
Basic and diluted earnings per share	$	.30	$	.40	$	.32	$	.22
2019:
Net sales	$	31.2	$	33.7	$	29.7	$	29.6
Gross margin		9.6		10.9		9.5		9.0
Operating income		4.3		5.6		4.3		3.5
Net income		4.0		4.9		3.9		3.2
Basic and diluted earnings per share	$	.32	$	.39	$	.31	$	.26