Stockholders' Equity (Details Textual) (USD $)	12 Months Ended				12 Months Ended	1 Months Ended								12 Months Ended									12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Aug. 10, 2010	Dec. 31, 2012 Stock Option [Member]	Jul. 31, 2012 Non-employee director [Member]	Feb. 29, 2012 Non-employee director [Member]	Jul. 31, 2011 Non-employee director [Member]	Feb. 28, 2011 Non-employee director [Member]	Jul. 31, 2010 Non-employee director [Member]	Feb. 28, 2010 Non-employee director [Member]	Aug. 31, 2006 Non-employee director [Member]	Feb. 29, 2004 Non-employee director [Member]	Dec. 31, 2012 Non-employee director [Member]	Dec. 31, 2011 Non-employee director [Member]	Dec. 31, 2010 Non-employee director [Member]	Dec. 31, 2012 Restricted Stock Units (RSUs) [Member]	Dec. 31, 2011 Restricted Stock Units (RSUs) [Member]	Dec. 31, 2010 Restricted Stock Units (RSUs) [Member]	Dec. 31, 2012 2008 Equity incentive plan [Member]	Dec. 31, 2012 2012 Equity Incentive Plan [Member]	Dec. 31, 2012 2008 and 2012 Equity Incentive Plan [Member]	Dec. 31, 2012 Warrant [Member]	Dec. 31, 2012 Restricted Stock Units [Member]	Dec. 31, 2011 Restricted Stock Units [Member]	Dec. 31, 2010 Restricted Stock Units [Member]	Dec. 31, 2012 Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued																							6,367
Warrants outstanding	86,221	93,289
Exercise price of warrants																							0.815
Shares, Outstanding	268,072	520,872	510,596
Expiration date of warrants																							Sep. 30, 2014
Reserved shares of common stock for issuance	1,412,747																98,575			1,000,000	750,000		86,221
Reserved for future grants under 2008 and 2012 Equity Incentive Plans																				794,923		794,923
Stock option granted under the 2008 Plan						16,328	31,820	25,632	51,642	34,425	53,844			48,148	77,274	88,269				0
Shares vest over Period					1 year												1 year							5 years	5 years	5 years	3 years
Number of RSUs												25,000	25,000				40,393	33,044	33,518
Fair value of awards, granted												$ 3.35	$ 3.17				$ 6.60	$ 4.11	$ 3.15
Number of shares of restricted stock vest																	25,165							15,228
Recognized costs			$ 10,000														$ 330,000
Stockholders' Equity (Textual) [Abstract]
Cashless warrants exercised	7,068
Unissued common stock reserved under equity incentive plan	44,923
Condition on options	The committee determines the terms of the option, including the amount, exercise price, vesting schedule and term, which may not exceed ten years. The per share exercise price of the option may not be less than 100% of the fair market value of the common stock on the grant date. No stock options granted to an employee under the 2008 Plan shall become fully vested within one year of grant date and no restricted stock or other awards made to an employee without any performance-based criteria other than the employee’s continued service will have a restricted vesting period of less than one year. We may not in any fiscal year grant to any participant options or other awards covering more than 200,000 shares.
Period of option, including the amount, exercise price, vesting schedule and term	10 years
Per share Exercise price of the option on fair market value of the common stock	100.00%
Grants to Participant options or other awards	200,000
Percentage of restricted stock units vested upon grant	20.00%
Percentage of restricted stock units vested after grant date	5.00%
Compensation cost of unvested portion of grants			3,750
Unvested restricted shares	0	0	0
Stock options grants period 1					1 year												1 year							5 years	5 years	5 years	3 years
Weighted average life in years of RSU's	2 years 10 months 10 days
Percentage of restricted stock units vesting annually beginning on second anniversary of grant date	25.00%
Purchase of outstanding shares				250,000
Repurchased and retired under stock buyback program	0	51,883	34,412
Total cost of shares purchased		$ 239,000	$ 139,000
Average price paid per share		$ 4.61	$ 4.06