5. Earnings per share (Details) - Earnings per share reconciliation (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings per share reconciliation [Abstract]
Net income (in Dollars)	$ 394	$ 1,160
Basic: Weighted average common shares outstanding	8,373	8,717
Add: Dilutive effect of outstanding options as determined by the treasury stock method	180	92
Diluted: Weighted average common and common equivalent shares outstanding	8,553	8,809
Net income per common share:
Basic (in Dollars per share)	$ 0.05	$ 0.13
Diluted (in Dollars per share)	$ 0.05	$ 0.13