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Other Non-Current Assets (Tables)
 6 Months Ended
Jun. 30, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Non-Current Assets Other non-current assets consist of the following (in thousands):
June 30, 2020December 31, 2019
Land lease and purchase options$3,506  $4,320  
Permitting costs13,092  12,838  
Right of use asset — operating leases (Note 14)12,687  15,832  
Other3,961  3,765  
Total other non-current assets$33,246  $36,755