Earnings per share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings per share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	418,000	0	530,000
Reconciliation of the weighted average shares outstanding for the basic and diluted EPS computations [Abstract]
Income (loss) from continuing operations	$ (109)	$ 445	$ (1,617)	$ 324
Basic: [Abstract]
Shares outstanding at beginning of period (in shares)	15,590,000	15,401,000	15,473,000	15,210,000
Weighted average shares issued during the period, net (in shares)	(13,000)	4,000	25,000	18,000
Weighted average common shares, basic (in shares)	15,577,000	15,405,000	15,498,000	15,228,000
Earnings from continuing operations per common share, basic (in dollars per share)	$ (0.01)	$ 0.03	$ (0.10)	$ 0.02
Diluted: [Abstract]
Weighted average common shares, basic (in shares)	15,577,000	15,405,000	15,498,000	15,228,000
Dilutive impact of stock options and restricted stock awards (in shares)	0	41,000	0	25,000
Weighted average common shares, diluted (in shares)	15,577,000	15,446,000	15,498,000	15,253,000
Earnings from continuing operations per common share, diluted (in dollars per share)	$ (0.01)	$ 0.03	$ (0.10)	$ 0.02