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Employee Benefit Plans (Schedule of ESOP Allocation) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Employee Benefit Plans [Abstract]    
Allocated shares 121,675us-gaap_EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares 114,040us-gaap_EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares
Unearned shares $ 41,590us-gaap_EmployeeStockOwnershipPlanESOPDeferredShares $ 49,225us-gaap_EmployeeStockOwnershipPlanESOPDeferredShares
Total ESOP shares 163,265us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP 163,265us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP
Fair value of unearned shares at end of period $ 557,306us-gaap_EmployeeStockOwnershipPlanESOPDeferredSharesFairValue $ 536,060us-gaap_EmployeeStockOwnershipPlanESOPDeferredSharesFairValue