Note 17 - Quarterly Consolidated Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Quarterly Financial Information [Table Text Block]

	Quarters Ended
	3/31/17		6/30/17		9/30/17 (1)		12/31/17 (2) (3)			Total
Net revenues	$	14,180	$	15,888	$	17,352	$	19,381		$	66,801
Gross margin		7,728		8,421		8,796		9,745			34,690
Earnings (loss) before income tax expense		3,172		2,336		2,841		(4,511	)		3,838
Income tax expense		1,094		891		823		55			2,863
Net earnings (loss)		2,078		1,445		2,018		(4,566	)		975
Net earnings (loss)per common share - basic	$	0.20	$	0.14	$	0.20	$	(0.44	)	$	0.09
Weighted average common shares outstanding - basic		10,264,565		10,277,155		10,288,325		10,308,243			10,284,572
Net earnings (loss) per common share - diluted	$	0.20	$	0.14	$	0.19	$	(0.44	)	$	0.09
Weighted average common shares outstanding - diluted		10,295,337		10,334,894		10,351,009		10,308,243			10,339,313

	Quarters Ended
	3/31/16		6/30/16		9/30/16		12/31/16		Total
Net revenues	$	8,647	$	10,485	$	10,823	$	10,272	$	40,227
Gross margin		4,067		5,329		5,577		5,405		20,378
Earnings before income tax expense		124		749		1,721		1,613		4,207
Income tax expense		43		263		631		612		1,549
Net earnings		81		486		1,090		1,001		2,658
Net earnings per common share - basic	$	0.01	$	0.05	$	0.11	$	0.10	$	0.26
Weighted average common shares outstanding - basic		10,390,002		10,295,836		10,295,447		10,273,702		10,313,747
Net earnings per common share - diluted	$	0.01	$	0.05	$	0.11	$	0.10	$	0.26
Weighted average common shares outstanding - diluted		10,404,244		10,310,692		10,318,715		10,297,439		10,332,920