Quarterly report pursuant to Section 13 or 15(d)

Other Non-Current Assets (Details)

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Other Non-Current Assets (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Land lease and purchase options $ 6,040 $ 5,831
Permitting costs 13,345 13,092
Right of use asset — operating leases 11,469 11,884
Other 1,952 2,090
Total other non-current assets $ 32,806 $ 32,897
Land lease and purchase option agreements, maximum terms (in years) 50 years