Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Fixed lease cost (Other operating expenses)	$ 4,746	$ 4,425
Variable lease cost (Other operating expenses)	1,099	988
Amortization of ROU asset (Depreciation and amortization)	3,641	3,641
Interest on lease liabilities (Interest expense)	2,662	2,795
Operating Lease [Member]
Lessee, Lease, Description [Line Items]
Lease, Cost	5,845	5,413
Finance Lease [Member]
Lessee, Lease, Description [Line Items]
Lease, Cost	$ 6,303	$ 6,436