Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Sales	$ 78,709	$ 64,711
Cost of sales	61,778	51,312
Gross profit	16,931	13,399
Operating expenses:
Salaries and commissions	8,844	6,909
Other operating expenses	7,477	5,837
Depreciation and amortization	860	692
Total operating expenses	17,181	13,438
Operating loss	(250)	(39)
Interest expense	450	175
Loss before income taxes	(700)	(214)
Income tax benefit	(247)	(30)
Net loss	$ (453)	$ (184)
Loss per share:
Basic (in dollars per share)	$ (0.03)	$ (0.01)
Diluted (in dollars per share)	$ (0.03)	$ (0.01)
Weighted average common shares outstanding:
Basic (in shares)	16,241,215	16,481,122
Diluted (in shares)	16,241,215	16,481,122
Dividends declared per share (in dollars per share)		$ 0.06