Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data

	Net sales		Gross profit		Net loss			Income (loss) per share			Weighted average number of shares outstanding
2019
First quarter	$	6,773	$	5,282	$	(3,717	)		($0.22	)		17,200
Second quarter		7,329		5,726	$	(3,530	)		($0.20	)		17,640
Third quarter		7,857		6,054	$	(2,956	)		($0.15	)		19,284
Fourth quarter		9,381		7,165	$	(3,348	)		($0.17	)		19,320
2018
First quarter	$	6,313	$	4,498	$	(3,281	)		($0.20	)		16,583
Second quarter		6,162		4,784	$	(1,027	)		($0.06	)		16,664
Third quarter		6,192		4,738	$	(1,365	)		($0.08	)		16,700
Fourth quarter		6,954		5,410	$	(3,344	)		($0.20	)		16,774