Annual report pursuant to Section 13 and 15(d)

Operating Leases - Lease Cost (Details)

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Operating Leases - Lease Cost (Details) - USD ($)
12 Months Ended
Aug. 13, 2021
Dec. 31, 2021
Dec. 31, 2020
Operating leases      
Increase to lease liability and the corresponding right-of-use asset due to modification of lease $ 4,290,000    
Amount paid as rent deposit $ 1,736,000    
Reduction in restricted cash   $ 2,739,000  
Operating lease cost   4,259,000 $ 4,044,000
Short-term lease cost   419,000 359,000
Total   4,678,000 4,403,000
Operating cash outflows from operating leases   $ 4,101,000 $ 3,769,000
Weighted-average remaining lease term - operating leases   7 years 9 months 18 days 6 years 3 months 18 days
Weighted-average discount rate - operating leases   6.80% 7.20%