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Unaudited Condensed Consolidated Statement of Changes in Stockholders’ Equity (USD $)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Total
Balance at Dec. 31, 2010 $ 211,042 $ 277,986,270 $ 28,508,349 $ (454,909) $ 306,250,752
Balance (in Shares) at Dec. 31, 2010 21,104,214        
Stock based compensation   4,071     4,071
Stock repurchase (5,516) (2,228,698)     (2,234,214)
Stock repurchase (in Shares) (551,646)        
Net income for the period     4,104,000   4,104,000
Other comprehensive income       369,045 369,045
Balance at Sep. 30, 2011 205,526 275,761,643 32,612,349 (85,864) 308,493,654
Balance (in Shares) at Sep. 30, 2011 20,552,568        
Balance at Dec. 31, 2011 205,526 275,761,643 37,058,140 72,718 313,098,027
Balance (in Shares) at Dec. 31, 2011 20,552,568        
Net income for the period     21,199,409   21,199,409
Other comprehensive income       11,830 11,830
Balance at Sep. 30, 2012 $ 205,526 $ 275,761,643 $ 58,257,549 $ 84,548 $ 334,309,266
Balance (in Shares) at Sep. 30, 2012 20,552,568