Other Real Estate and Property Acquired in Settlement of Loans (Details 2) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Reposessed Assets, Increase (Decrease) During Period [Roll Forward]    
Beginning balance $ 30,982 $ 39,756
Transfers of loans to ORE 12,090 22,076
Sales (18,350) (26,787)
Write-downs (2,158) (4,063)
Ending balance $ 22,564 $ 30,982