Earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Earnings per share [Abstract]
Anti-dilutive stock options outstanding (in shares)	16,000	151,000
Reconciliation of the weighted average shares outstanding for the basic and diluted EPS computations [Abstract]
Income from continuing operations	$ 15	$ 192
Basic [Abstract]
Shares outstanding at beginning of period (in shares)	15,645,000	15,592,000
Weighted average shares issued during the period, net (in shares)	1,000	4,000
Weighted average common shares, basic (in shares)	15,646,000	15,596,000
Income from continuing operations per common share, basic (in dollars per share)	$ 0	$ 0.01
Diluted [Abstract]
Weighted average common shares, basic (in shares)	15,646,000	15,596,000
Dilutive impact of stock options and restricted stock awards (in shares)	77,000	114,000
Weighted average common shares, diluted (in shares)	15,723,000	15,710,000
Income from continuing operations per common share, diluted (in dollars per share)	$ 0	$ 0.01