Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Sales	$ 65,222	$ 78,260	$ 192,387	$ 237,819
Cost of sales	53,177	62,129	154,513	187,029
Gross profit	12,045	16,131	37,874	50,790
Operating expenses:
Salaries and commissions	7,148	7,311	20,895	21,717
Other operating expenses	5,969	6,300	17,302	18,629
Depreciation and amortization	732	737	2,198	2,175
Impairment charge			2,384	2,994
Total operating expenses	13,849	14,348	42,779	45,515
Operating income (loss)	(1,804)	1,783	(4,905)	5,275
Interest expense	129	237	453	719
Income (loss) before income taxes	(1,933)	1,546	(5,358)	4,556
Income tax expense (benefit)	(494)	870	(1,178)	2,313
Net income (loss)	$ (1,439)	$ 676	$ (4,180)	$ 2,243
Earnings (loss) per share:
Basic (in dollars per share)	$ (0.09)	$ 0.04	$ (0.26)	$ 0.13
Diluted (in dollars per share)	$ (0.09)	$ 0.04	$ (0.26)	$ 0.13
Weighted average common shares outstanding:
Basic (in shares)	16,302,870	17,017,334	16,388,892	17,137,730
Diluted (in shares)	16,302,870	17,072,128	16,388,892	17,190,664
Dividends declared per share (in dollars per share)	$ 0.03	$ 0.12	$ 0.15	$ 0.36