Stockholders Equity (Details Textual) (USD $)	0 Months Ended	6 Months Ended					3 Months Ended		6 Months Ended
	Apr. 11, 2013	Jun. 30, 2013	Apr. 30, 2013	Feb. 12, 2013	Dec. 31, 2012	Dec. 31, 2012 Series B Preferred Stock [Member]	Jun. 30, 2013 Second Amended And Restated 2005 Equity Incentive Plan [Member]	Jun. 30, 2012 Second Amended And Restated 2005 Equity Incentive Plan [Member]	Jun. 30, 2013 Second Amended And Restated 2005 Equity Incentive Plan [Member]	Jun. 30, 2012 Second Amended And Restated 2005 Equity Incentive Plan [Member]	Apr. 11, 2013 Shareholders, Other Than Majority Shareholder [Member] Basic Subscription Rights [Member]	Apr. 11, 2013 Shareholders, Other Than Majority Shareholder [Member] Standby Purchase Agreement [Member]	Apr. 11, 2013 Majority Shareholder [Member] Basic Subscription Rights [Member]	Apr. 11, 2013 Majority Shareholder [Member] Standby Purchase Agreement [Member]	Jun. 30, 2013 Series E Preferred Stock [Member]	Dec. 31, 2012 Series E Preferred Stock [Member]
Schedule of Stockholders Equity (Textual) [Abstract]
Stock-based compensation expense							$ 70,000	$ 166,000	$ 150,000	$ 351,000
Total unrecognized compensation							102,000		102,000
Vesting period for unrecognized compensation cost to be recognized							1 year
Authorized issuance				75,530
Dividends undeclared						167,000
Exercise price of right (usd per warrant)			1.8901
Percent of shares to be repurchased	20.00%
Common stock, shares issued	6,032,153	30,149,000			30,073,000						1,383,819	213,138	3,650,849	784,347
Expected proceeds	11,400,000
Payments for shares purchased	40,000
Proceeds from common stock issuance	8,302,963
Shareholder ownership	62.71%
Expected proceeds, net		11,200,000
Stock payable															$ 22,800,000	$ 0