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Leases (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Lessee, Lease, Description [Line Items]          
Options to extend the lease, period     5 years    
Weighted average discount rate, Operating leases 5.50%   5.50%   5.90%
Weighted average remaining lease term, Operating leases 3 years 9 months 18 days   3 years 9 months 18 days   3 years 6 months
Lease, Cost [Abstract]          
Operating lease cost $ 390 $ 357 $ 1,145 $ 1,072  
Assets and Liabilities, Lessee [Abstract]          
Operating lease right of use assets 3,631   3,631   $ 2,754
Current operating lease liabilities $ 1,137   $ 1,137   $ 1,023
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Other Accrued Liabilities, Current   Other Accrued Liabilities, Current   Other Accrued Liabilities, Current
Noncurrent operating lease liabilities $ 2,453   $ 2,453   $ 1,670
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Other non-current liabilities   Other non-current liabilities   Other non-current liabilities
Total operating lease liabilities $ 3,590   $ 3,590   $ 2,693
Weighted average remaining lease term, Operating leases 3 years 9 months 18 days   3 years 9 months 18 days   3 years 6 months
Weighted average discount rate, Operating leases 5.50%   5.50%   5.90%
Cash Flow, Operating Activities, Lessee [Abstract]          
Operating cash flows from operating leases     $ 1,145 $ 1,072  
Lessee, Operating Lease, Description [Abstract]          
Operating leases to be paid in remainder of fiscal year $ 373   373    
Operating leases to be paid in year one 1,143   1,143   $ 1,215
Operating leases to be paid in year two 1,044   1,044   811
Operating leases to be paid in year three 1,050   1,050   706
Operating leases to be paid in year four 629   629   705
Operating leases to be paid in year five         0
Total lease payments 4,239   4,239   3,437
Less: imputed interest (649)   (649)   (744)
Total operating lease liabilities 3,590   3,590   2,693
Less: current obligations 1,137   1,137   1,023
Long-term lease obligations $ 2,453   $ 2,453   $ 1,670
Minimum          
Lessee, Lease, Description [Line Items]          
Remaining lease term 1 year   1 year    
Maximum          
Lessee, Lease, Description [Line Items]          
Remaining lease term 4 years   4 years