Leases - Lease Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets:
Operating lease right-of-use assets	$ 8,559	$ 8,541
Liabilities:
Operating lease liabilities	3,751	3,587
Long-term operating lease liabilities	10,353	10,774
Total operating lease liabilities	$ 14,104	$ 14,361
Weighted average remaining lease term (years)	6 years 8 months 19 days	7 years 3 months 10 days
Weighted average discount rate	3.50%	3.60%