Earnings per share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings per share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	474,000	0	0
Reconciliation of the weighted average shares outstanding for the basic and diluted EPS computations [Abstract]
Income (loss) from continuing operations	$ (519)	$ 248	$ (1,508)	$ (121)
Basic:
Shares outstanding at beginning of period (in shares)	15,612,000	15,161,000	15,473,000	15,151,000
Weighted average shares issued during the period, net (in shares)	0	10,000	0	11,000
Weighted average common shares, basic (in shares)	15,612,000	15,171,000	15,473,000	15,162,000
Earnings (loss) from continuing operations per common share, basic (in dollars per share)	$ (0.03)	$ 0.02	$ (0.10)	$ (0.01)
Diluted:
Weighted average common shares, basic (in shares)	15,612,000	15,171,000	15,473,000	15,162,000
Dilutive impact of stock options and restricted stock awards (in shares)	0	169,000	0	0
Weighted average common shares, diluted (in shares)	15,612,000	15,340,000	15,473,000	15,162,000
Earnings (loss) from continuing operations per common share, diluted (in dollars per share)	$ (0.03)	$ 0.02	$ (0.10)	$ (0.01)