Fair Value - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capitalization Rates Utilized To Determine Fair Value Of Underlying Collateral Averaged Percentage	8.00%
Loans and Leases Receivable, Allowance	$ 19,128	$ 17,071	$ 20,068	$ 22,104
Loans Receivable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	1,100
Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Charge Offs	200
Other Real Estate Owned And Other Reductions	1,500
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	3,400
Other Real Estate Revenue	400
Other real estate owned and other reductions classified as level three transfers in	3,400
Loans Receivable, Fair Value Disclosure	7,500	10,400
Loans and Leases Receivable, Allowance	2,900	$ 2,400
Fair Value Of Other Real Estate Owned Allowance	$ 0