CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Dividends on common stock (in dollars per share)	$ 0.16	$ 0.16	$ 0.25
Dividends on preferred stock (in dollars per share)	$ 65.00	$ 53.44
Sale of treasury stock, in shares	615,340
Restricted stock grants, in shares	514,507	536,110	157,000
Forfeitures of restricted stock, shares	31,408	113,468	275,397
Series C Preferred Stock
Issuance of preferred stock, series C, shares		135,000