Preferred Stock Narrative (Details) (USD $)	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Class of Stock [Line Items]
Preferred Stock issued	100	100
Preferred Stock, outstanding	100	100
Accrued dividends	$ 210,000	$ 0
Cash	2,804,000	2,218,000	1,689,000	1,818,000
Conversion price below this fair value of the common stock	1.16
Balance Required to Pay Dividends [Member]
Class of Stock [Line Items]
Cash	4,176,000
Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock authorized	5,000,000
Series B-1 Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock issued	100
Preferred Stock stated value (per share)	$ 100,000
Preferred stock, percentage of shareholders required for conversion (at least)	90.00%
Preferred stock, cumulative dividend percentage rate (per annum)	4.00%
Preferred stock, dividend rate, next fiscal year	6.00%
Accrued dividends	200,000
Series A-2 Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock authorized	7,500
Preferred Stock issued	53
Preferred Stock stated value (per share)	$ 7,500
Preferred stock, cumulative dividend percentage rate (per annum)	5.00%
Accrued dividends	$ 10,000
Stock issued during period, conversion of convertible securities, price (per share)	$ 3.00
Convertible preferred stock, shares issued upon conversion	2,500
Series D Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock authorized	4,000
Preferred Stock issued	0