Fair Value Measurements Schedule of Level 3 Financial Assets and Liabilities Measured on A Recurring Basis (Details) - Level 3 - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fair Value Measurement On Nonrecurring Basis Asset And Liabilities Value [Roll Forward]
Beginning balance	$ 9,020	$ 6,916
Loans classified as impaired during the period	2,330	3,098
Specific valuation allowance allocations	0	(94)
Fair Value	2,330	3,004
(Additional) reduction in specific valuation allowance allocations	(218)	(19)
Paydowns, payoffs, other activity	(1,054)	(881)
Ending balance	$ 10,078	$ 9,020