Note 15 - Quarterly Consolidated Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

	Quarters Ended
	3/31/14		6/30/14		9/30/14		12/31/14		Total
Net revenues	$	8,797	$	12,343	$	10,794	$	9,862	$	41,796
Gross margin		4,185		6,082		5,168		5,027		20,462
Earnings before income tax expense		411		2,054		1,268		1,176		4,909
Income tax expense		125		697		431		217		1,470
Net earnings		286		1,357		837		959		3,439
Net earnings per common share - basic	$	0.03	$	0.13	$	0.08	$	0.09	$	0.33
Weighted average common shares outstanding - basic		10,393,956		10,436,730		10,440,803		10,454,716		10,431,743
Net earnings per common share - diluted	$	0.03	$	0.13	$	0.08	$	0.09	$	0.33
Weighted average common shares outstanding - diluted		10,448,911		10,456,183		10,477,814		10,480,867		10,466,064

	Quarters Ended
	3/31/13		6/30/13		9/30/13		12/31/13		Total
Net revenues	$	8,973	$	11,218	$	9,900	$	9,335	$	39,426
Gross margin		4,105		5,465		4,756		4,689		19,015
Earnings before income tax expense		370		1,487		1,114		1,037		4,008
Income tax expense		78		484		24		345		931
Net earnings		292		1,003		1,090		692		3,077
Net earnings per common share - basic	$	0.03	$	0.10	$	0.11	$	0.07	$	0.30
Weighted average common shares outstanding - basic		10,327,428		10,371,716		10,377,189		10,377,678		10,363,678
Net earnings per common share - diluted	$	0.03	$	0.10	$	0.10	$	0.07	$	0.30
Weighted average common shares outstanding - diluted		10,366,312		10,394,094		10,404,095		10,435,096		10,419,103