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Consolidated Statements of Shareholders' Equity (USD $) | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Total
--- | --- | --- | --- | ---
Balance at Dec. 31, 2009 | $ 925,492 | $ 235,588,391 | $ (5,060,620) | $ 231,453,263
Balance (in Shares) at Dec. 31, 2009 | 30,849,711 |  |  |
Net income (loss) |  |  | (6,605,850) | (6,605,850)
Issuance of restricted shares for stock incentive award and share-based compensation | 4,575 | 691,540 |  | 696,115
Issuance of restricted shares for stock incentive award and share-based compensation (in Shares) | 152,500 |  |  |
Dividends declared (see Note 13) |  |  | (6,848,536) | (6,848,536)
Balance at Dec. 31, 2010 | 930,067 | 236,279,931 | (18,515,006) | 218,694,992
Balance (in Shares) at Dec. 31, 2010 | 31,002,211 |  |  |
Net income (loss) |  |  | 1,115,989 | 1,115,989
Issuance of restricted shares for stock incentive award and share-based compensation | 4,950 | 563,539 |  | 568,489
Issuance of restricted shares for stock incentive award and share-based compensation (in Shares) | 165,000 |  |  |
Dividends declared (see Note 13) |  |  | (8,457,722) | (8,457,722)
Balance at Dec. 31, 2011 | 935,017 | 236,843,470 | (25,856,739) | 211,921,748
Balance (in Shares) at Dec. 31, 2011 | 31,167,211 |  |  |
Net income (loss) |  |  | (13,198,741) | (13,198,741)
Issuance of shares in “Rights Offering Program, net of issuance costs” | 415,562 | 14,252,617 |  | 14,668,179
Issuance of shares in “Rights Offering Program, net of issuance costs” (in Shares) | 13,852,094 |  |  | 13,852,094
Issuance of restricted shares for stock incentive award and share-based compensation | 9,009 | 662,372 |  | 671,381
Issuance of restricted shares for stock incentive award and share-based compensation (in Shares) | 300,300 |  |  |
Dividends declared (see Note 13) |  |  | (4,436,421) | (4,436,421)
Balance at Dec. 31, 2012 | $ 1,359,588 | $ 251,758,459 | $ (43,491,901) | $ 209,626,146
Balance (in Shares) at Dec. 31, 2012 | 45,319,605 |  |  |

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