Commitments And Contingencies (Additional Information) (Details)		12 Months Ended
		Dec. 31, 2016 USD ($) swap	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Legal Proceedings [Line Items]
Loss Contingency Accrual		$ 0	$ 0
Net change in unrealized gains (losses) on cash flow hedging derivatives, net of tax of $343, $825, and $2,431, respectively		(637,000)	(1,533,000)	$ (4,515,000)
Loss on Cash Flow Hedge Ineffectiveness		$ 0	0	0
Derivative, Number of Interest Rate Swap Agreements | swap		2
Unrealized Gain (Loss) on Derivatives		$ (289,000)	133,000
Interest Rate Swap [Member]
Legal Proceedings [Line Items]
Notional amount of derivative		43,000,000	43,000,000
Cash held as collateral		9,700,000
Net Payment on Derivatives		1,500,000	1,700,000
Derivative, Fair Value, Net	[1]	(8,372,000)	(9,229,000)
Forward Commitments To Sell Residential Mortgage Loans [Member]
Legal Proceedings [Line Items]
Notional amount of derivative			0
Forward-Starting Interest Rate Swap [Member]
Legal Proceedings [Line Items]
Notional amount of derivative		50,000,000	50,000,000
Cash held as collateral		474,000
Net Payment on Derivatives		490,000
Derivative, Fair Value, Net	[2]	(389,000)	(576,000)
Interest Rate Lock Commitments [Member]
Legal Proceedings [Line Items]
Notional amount of derivative		15,249,000	20,735,000
Derivative, Fair Value, Net		187,000	139,000
Unrealized Gain (Loss) on Derivatives		48,000	139,000	0
Forward Contracts [Member]
Legal Proceedings [Line Items]
Notional amount of derivative		15,125,000	0
Derivative, Fair Value, Net		278,000	0
Unrealized Gain (Loss) on Derivatives		278,000	0	$ 0
Loans [Member] | Interest Rate Swap [Member]
Legal Proceedings [Line Items]
Notional amount of derivative		532,526,000	285,888,000
Cash held as collateral		0
Derivative, Fair Value, Net		$ 0	$ 0

[1] Presented within accrued interest and other liabilities on the consolidated statements of condition.

[2] (1) Presented within accrued interest and other liabilities on the consolidated statements of condition.