CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
CONDENSED CONSOLIDATED BALANCE SHEETS
Securities available-for-sale, covered by FDIC loss sharing (in dollars)	$ 39,378	$ 44,684
Loans and leases, covered by FDIC loss sharing (in dollars)	510,924	543,327
Allowance for loan and lease, covered by FDIC loss sharing (in dollars)	23,235	26,069
Other real estate owned, covered by FDIC loss sharing (in dollars)	$ 12,014	$ 22,842
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized shares	5,000,000	5,000,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares	75,000,000	75,000,000
Common stock, issued shares	46,528,290	37,772,559
Common stock, unvested restricted stock	1,791,462	1,698,281
Treasury stock, shares	437,548	351,650