Summary of Significant Accounting Policies - Earnings Per Share (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Earnings Per Share [Line Items]
Net income (loss)	$ 2,631,341	$ 388,729	$ 1,942,810	$ 4,954,393	$ (1,017,357)	$ 4,417,241	$ 18,314,195	$ (1,186,887)	$ 9,917,273	$ 20,527,192	$ (21,830,682)
Less: Preferred stock dividends									(29,334)	(30,000)	(30,000)
INCOME (LOSS) PER SHARE - Basic
NET INCOME (LOSS) APPLICABLE TO COMMON STOCK									9,887,939	20,497,192	(21,860,682)
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING: Basic (in shares)									87,315,808	86,325,350	73,462,937
NET INCOME (LOSS) PER COMMON SHARE: Basic (in dollars per share)	$ 0.03	$ 0.00	$ 0.02	$ 0.06	$ (0.01)	$ 0.05	$ 0.21	$ (0.01)	$ 0.11	$ 0.24	$ (0.30)
INCOME (LOSS) PER SHARE - Diluted
Less: Fair value stock warrants for dilutive warrants									(6,995,099)	(556,662)	0
NET INCOME (LOSS) APPLICABLE TO DILUTIVE COMMON STOCK									2,922,174	19,970,530	(21,860,682)
Effect of dilutive securites
Dilutive stock awards									48,866	1,357,712	0
Incremental Common Shares Attributable to Call Options and Warrants									0	2,855,848	0
Dilutive preferred share conversions									1,139,600	2,010,243	0
Weighted Average Number Diluted Shares Outstanding Adjustment									1,188,466	6,223,803	0
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING - Diluted: (in shares)									88,504,274	92,549,153	73,462,937
NET INCOME (LOSS) PER COMMON SHARE: Diluted (in dollars per share)	$ 0.01	$ 0.00	$ 0.02	$ (0.02)	$ (0.01)	$ (0.01)	$ 0.16	$ (0.01)	$ 0.03	$ 0.22	$ (0.30)
Antidilutive securities excluded from computation of earnings per share, amount									14,734,853	6,158,057	18,692,755
Scenario, Other [Member]
Earnings Per Share [Line Items]
Less: Preferred stock dividends											$ 0