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Stock-based Compensation (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock Based Compensation (Textual) [Abstract]
Number of Common Stock outstanding	315,356
Number of Common Stock outstanding	2,660,315	2,030,500
Increase in maximum number of shares issuable	54,387
Number of shares outstanding under Equity plan	67,630
Shares reserved for future	80,255
Percentage holding for stock options exercise price	10.00%
Number of shares outstanding under Non-Employee Director Stock Option Plan	144,019	144,039	158,873
Options granted to purchase common stock	5,833	27,450
Total intrinsic value of options exercised	$ 0	$ 1,000
Unrecognized compensation expense related to unvested options	$ 150,000
Maturity period of weighted average period of compensation expenses	10 months 24 days
2004 Stock Option Plan [Member]
Stock Based Compensation (Textual) [Abstract]
Number of Common Stock outstanding	76,305
Warrant price per share	14.04
Non-Employee Director Stock Option Plan [Member]
Stock Based Compensation (Textual) [Abstract]
Number of shares outstanding under Non-Employee Director Stock Option Plan	83
Maximum [Member]
Stock Based Compensation (Textual) [Abstract]
Percentage of exercise price of stock option	110.00%
Minimum [Member]
Stock Based Compensation (Textual) [Abstract]
Percentage of exercise price of stock option	100.00%

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