Loans and Allowance for Loan Losses (Schedule of Provision for Credit Losses) (Details) - USD ($) $ in Thousands		3 Months Ended									12 Months Ended
		Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	[2]	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Receivables [Abstract]
Provision (credit)	[1]										$ 845	$ 3,026	$ 5,269
Provision for Other Credit Losses											2	9	(11)
Provision for credit losses		$ 7	$ 354	$ 983	$ (497)	$ 238		$ 817	$ 1,401	$ 579	$ 847	$ 3,035	$ 5,258

[1] (1) The provision (credit) for loan losses excludes any impact for the change in the reserve for unfunded commitments, which represents management's estimate of the amount required to reflect the probable inherent losses on outstanding letters of credit and unused lines of credit. The reserve for unfunded commitments was presented within accrued interest and other liabilities on the consolidated statements of condition. At December 31, 2018, 2017, and 2016, the reserve for unfunded commitments was $22,000, $20,000 and $11,000, respectively.

[2] (1) In the fourth quarter of 2017, the Company recognized $14.3 million of additional income tax expense upon the revaluation of its deferred tax assets and liabilities upon enactment of the Tax Act on December 22, 2017, which lowered the federal corporate tax rate from 35.0% to 21.0%, effective January 1, 2018. The impact to fourth quarter 2017 basic and diluted EPS was $0.91 per share.