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Preferred Stock (Details) (USD $) | 0 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Nov. 19, 2010 | Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Jun. 30, 2012 | Dec. 31, 2011
Class of Stock [Line Items] |  |  |  |  |  |  |
Preferred Offering Units | 10,582,011 |  |  |  |  |  |
Preferred Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01 |  | $ 0.01 |  |  | $ 0.01
Sale of Stock, Price Per Share | $ 0.945 |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity |  |  |  | $ 12,160,227 | $ 21,167,682 |  |
Common Stock Dividends, Shares |  |  |  | 7,950,107 |  |  |
Preferred Stock, pre-payment, Minimum Increment Value |  | 1,000,000 |  | 1,000,000 |  |  |
Preferred Stock, Pre-payment Option, Percent of Outstanding Balance |  |  |  | 110.00% |  |  |
Preferred Stock, Pre-payment Option, Minimum Number of Days Notice to Pre-pay |  |  |  | 30 days |  |  |
Preferred Offering, Maximum Period of Escrow of Proceeds | 2 years 6 months |  |  |  |  |  |
Preferred Stock Conversion, Conversion Price per share |  |  |  |  |  | $ 2.0004 |
Adjusted Conversion Price |  |  |  |  |  | $ 1.18 |
Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments |  | (6,200) | 70,800 | (134,800) | 87,900 |  |
Series E Seven Percent Senior Convertible Preferred Stock [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Percent of Preferred Shares Required to be Redeemed Monthly |  |  |  | 3.70% |  |  |
Number of Shares of Preferred Stock Included in Preferred Offering Unit | 1 |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage | 7.00% |  |  |  |  |  |
Warrant to purchase 0.25 of a share of Common Stock [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 0.25 |  |  |  |  |  |
Stock and Warrants Issued During Period, Shares, Preferred Stock and Warrants | 1,322,486 | 1,747,188 |  | 1,747,188 |  |  |
Preferred Offering Unit [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity | 10,000,000 |  |  |  |  |  |
Net Proceeds from Issuance or Sale of Equity | 8,876,700 |  |  |  |  |  |
Escrow Deposit | 2,500,000 |  |  |  |  |  |
Warrant to purchase 0.0155 of a share of Common Stock [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 0.0155 |  |  |  |  |  |
Stock and Warrants Issued During Period, Shares, Preferred Stock and Warrants | 164,418 |  |  |  |  |  |
Preferred Stock [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Fair value of Equity |  |  |  |  |  | 2,721,100 |
Embedded Derivative Financial Instruments [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Fair value of Equity |  |  |  |  |  | 257,000 |
Warrant [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Fair value of Equity |  |  |  |  |  | $ 170,600 |

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