Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Details)

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Earnings Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Earnings per Share anti diluted        
Net income available to common stockholders $ 3,134,170 $ 173,319 $ 3,241,944 $ 251,440
Effect of assumed conversions 0 9,625 0 19,250
Net income available to common stockholders and assumed conversions $ 3,134,170 $ 182,944 $ 3,241,944 $ 270,690
Average common shares outstanding-basic (in shares) 3,765,573 3,744,375 3,766,508 3,739,731
Dilutive effect of equity instruments (in shares) 2,740,586 3,059,922 2,755,106 3,050,998
Average common shares outstanding-diluted (in shares) 6,506,159 6,804,297 6,521,614 6,790,729
Net income per common share        
Basic (in dollars per share) $ 0.83 $ 0.05 $ 0.86 $ 0.07
Diluted (in dollars per share) $ 0.48 $ 0.03 $ 0.50 $ 0.04