Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 3,100	$ 3,100	$ 3,200
Operating Leases, Rent Expense, Net		2,300	$ 2,300
Lease liabilities	16,400
Right-of-use assets	$ 15,137
Lease term for operating leases	7 years 2 months 12 days
Weighted average discount rate	3.00%
Lease costs	$ 3,100