Dividends Payable (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended		3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Sep. 30, 2012 5% preferred stock	Sep. 30, 2012 Series 2 preferred stock and series 3 preferred stock item	Oct. 31, 2012 Series 2 preferred stock and series 3 preferred stock	Sep. 30, 2012 Series 2 preferred Stock	Sep. 30, 2012 Series 3 preferred Stock
Dividends Payable
Preferred stock dividends accrued during the period	$ 39,000	$ 38,000	$ 116,000	$ 113,000		$ 13,900			$ 14,800	$ 10,600
Accrued and unpaid dividends	239,000		239,000		123,000
Dividend rate (as a percent)						5.00%			5.00%	5.00%
Percentage of additional late fee penalty payable on unpaid dividends							18.00%
Number of outside board members invested in preferred stock							1
Period within which entity must cure breach							45 days
Redemption price								$ 2,000,000