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Leases - Supplemental Balance Sheet (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Jan. 01, 2019
Leases [Abstract]      
Operating RoU Assets $ 7,164 $ 7,994 $ 7,500
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] us-gaap:OtherAssets us-gaap:OtherAssets  
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] us-gaap:OtherAccruedLiabilitiesCurrent us-gaap:OtherAccruedLiabilitiesCurrent  
Current operating lease liabilities $ 4,102 $ 4,475  
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilitiesNoncurrent us-gaap:OtherLiabilitiesNoncurrent  
Non-current operating lease liabilities $ 3,195 $ 3,598  
Total operating lease liabilities $ 7,297 $ 8,073 $ 7,500
Weighted average term (years) 2 years 8 months 12 days 2 years 3 months 18 days  
Weighted average discount rate (percent) 5.82% 5.61%