Stockholder's Equity (Details 3) (USD $) In Thousands, except Share data, unless otherwise specified				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Stock Options Three [Member]	Dec. 31, 2012 Stock Options Four [Member]	Dec. 31, 2012 Stock Options Five [Member]	Dec. 31, 2012 Stock options [Member]
Outstanding stock options
Exercise price for granted options				$ 5.77	$ 5.85	$ 2.30
Shares, Outstanding	268,072	520,872	510,596	31,923	142,382	258,723	433,028
Weighted-Average Life (Years), Outstanding				4 years 2 months 1 day	5 years 29 days	6 years 2 months 1 day	5 years 7 months 28 days
Intrinsic Values, Outstanding				$ 48	$ 204	$ 1,288	$ 1,540
Weighted-Average Exercise Price, Exercisable				$ 5.77	$ 5.85	$ 2.30	$ 4.13
Shares, Exercisable				31,923	106,787	129,362	268,072
Intrinsic Values Exercisable, at stock option plan exercise price				$ 48	$ 153	$ 644	$ 845