Net Income (loss) per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reconciliation of the weighted average shares outstanding for the basic and diluted EPS computations [Abstract]
Income from continuing operations	$ 518	$ 1,297	$ 634	$ 2,732
Basic [Abstract]
Shares outstanding at beginning of period (in shares)	15,770,000	15,585,000	15,645,000	15,592,000
Weighted average shares issued during the period, net (in shares)	0	4,000	25,000
Weighted average shares cancelled during the period, net (in shares)				(43,000)
Weighted average common shares, basic (in shares)	15,770,000	15,589,000	15,670,000	15,549,000
Income from continuing operations per common share, basic (in dollars per share)	$ 0.03	$ 0.08	$ 0.04	$ 0.18
Diluted [Abstract]
Weighted average common shares, basic (in shares)	15,770,000	15,589,000	15,670,000	15,549,000
Dilutive impact of stock options and restricted stock awards (in shares)	52,000	70,000	60,000	101,000
Weighted average common shares, diluted (in shares)	15,822,000	15,659,000	15,730,000	15,650,000
Income from continuing operations per common share, diluted (in dollars per share)	$ 0.03	$ 0.08	$ 0.04	$ 0.17
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive stock options outstanding (in shares)	914,000	1,006,000	470,000	1,060,000