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Commitments and Contingencies Lease Commitments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]    
Operating Lease, Weighted Average Remaining Lease Term 9 years 10 months 24 days  
Lessee, Operating Lease, Liability, Payments, Due Year One $ 1,430  
Lessee, Operating Lease, Liability, Payments, Due Year Two 1,272  
Lessee, Operating Lease, Liability, Payments, Due Year Three 1,271  
Lessee, Operating Lease, Liability, Payments, Due Year Four 1,302  
Lessee, Operating Lease, Liability, Payments, Due Year Five 1,335  
Lessee, Operating Lease, Liability, Payments, Due after Year Five 6,936  
Lessee, Operating Lease, Liability, Payments, Due 13,546  
Operating Lease, Interest Expense (1,577)  
Operating Lease, Liability $ 11,969  
Operating Lease, Weighted Average Discount Rate, Percent 4.19%  
Operating Lease, Expense $ 1,300 $ 1,600
Operating Lease, Right-of-Use Asset $ 11,900  
Operating Lease, Liability, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilities