Quarterly report pursuant to Section 13 or 15(d)

Leases - Lease Assets and Liabilities (Details)

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Leases - Lease Assets and Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Assets    
Operating lease assets $ 38,631 $ 37,735
Finance lease assets $ 4,793 5,258
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] us-gaap:PropertyPlantAndEquipmentNet  
Current    
Operating lease liabilities $ 10,305 9,028
Accrued expenses 2,287 2,453
Long-term    
Operating lease liabilities 32,394 29,760
Other long-term liabilities $ 2,506 $ 2,805
Weighted average remaining lease term    
Operating leases 5 years 9 months 18 days 5 years 4 months 24 days
Finance leases 2 years 4 months 24 days 2 years 3 months 18 days
Weighted average discount rate    
Operating leases 5.70% 5.80%
Finance leases 4.30% 3.60%