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Benefit Plans - Bank-Owned Life Insurance, Non-Equity Incentive Plan (Details) (USD $)
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 31, 2006
Jun. 30, 2001
Mar. 31, 2000
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]            
Investment in bank-owned life insurance       $ 27,032,000 $ 26,433,000  
Incentive Compensation Expense       3,371,992 0 0
Officers | Bank-Owned Life Insurance
           
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]            
Bank owned life insurance, percentage interest owned in cash surrender value       100.00%    
Bank owned life insurance, employer contribution 5,500,000 5,000,000 4,800,000      
Liability determination, cost of insurance method, discount rate       4.00% 4.00%  
Bank owned life insurance, liability         1,900,000  
Bank owned life insurance, net periodic benefit costs       (5,702) 376,000 334,000
Bank owned life insurance, plan termination, resultant decrease in liability         $ 500,000