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Earnings per Share Basis and Diluted (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator
Net income	$ 580	$ 995	$ 2,314	$ 2,186
Denominator
Weighted average shares (basic)	28,006,517	27,375,429	27,881,957	27,271,201
Dilutive effect of potential common shares	1,952,063	961,714	1,828,245	1,032,559
Weighted average shares (diluted)	29,958,580	28,337,143	29,710,202	28,303,760
Basic earnings per share	$ 0.02	$ 0.04	$ 0.08	$ 0.08
Diluted earnings per share	$ 0.02	$ 0.04	$ 0.08	$ 0.08

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