Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 3,054
Operating Lease, Right-of-Use Asset	14,843			$ 15,500
Operating Lease, Cost	3,301
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	5,208	$ 0	$ 0
Short-term Lease, Cost	288
Lease, Cost	3,589
Operating Lease, Liability	$ 15,461			$ 16,200
Operating Lease, Weighted Average Remaining Lease Term	6 years
Operating Lease, Weighted Average Discount Rate, Percent	2.70%
Lessee, Operating Lease, Liability, Payments, Due Year Two	$ 3,097
Lessee, Operating Lease, Liability, Payments, Due Year Three	2,734
Lessee, Operating Lease, Liability, Payments, Due Year Four	2,527
Lessee, Operating Lease, Liability, Payments, Due Year Five	2,146
Lessee, Operating Lease, Liability, Payments, Due after Year Five	3,203
Lessee, Operating Lease, Liability, Payments, Due	16,761
Present Value Adjustment	$ 1,300
Lessee, Operating Lease, Term of Contract	3 years
Operating Lease, Lease Income, Lease Payments	$ 900
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	5 years