OREO (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Real Estate [Roll Forward]
Beginning balance	$ 28,597	$ 98,187	$ 183,452
Additions	24,763	33,499	177,881
Sales	(37,626)	(85,837)	(241,028)
Charge-offs	(6,565)	(18,534)	(27,731)
Other changes	550	1,282	5,613
Ending balance	9,719	28,597	98,187
Allowance, OREO [Roll Forward]
Beginning balance	3,555	16,277	21,799
Provisions	4,682	5,812	22,209
Charge-offs	(6,565)	(18,534)	(27,731)
Ending balance	1,672	3,555	16,277
Other real estate owned, net (OREO)	$ 8,047	$ 25,042	$ 81,910