Loans Summary of Activity in Allowance for Acquired Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Acquired Nonimpaired Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	$ 380		$ 383	$ 0
Charge-offs	0	$ 0	3	0
Ending balance	380	0	380	0
Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance			153	108
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	(19)	47	(19)	47
Ending balance	$ 134	$ 155	$ 134	$ 155