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Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) - 6 months ended Jun. 30, 2015 - $ / shares
Total
Statement of Stockholders' Equity [Abstract]  
Dividends on preferred stock (in dollars per share) $ 32.50
Dividends on common stock (in dollars per share) $ 0.08
Sale of treasury stock (in shares) 475,182
Restricted stock grants, shares 426,552
Forfeitures of restricted stock, shares 50,294