Other Real Estate (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Other real estate	$ 112,629,000	$ 150,271,000
Loans foreclosed and transferred to other real estate	88,700,000	155,800,000	226,900,000
Foreclosed real estate expense, net	33,864,000	90,655,000	133,570,000
Write-downs to net realizable value and losses resulting from sales transactions	$ (25,508,000)	$ (73,940,000)	$ (113,380,000)