XML 85 R72.htm IDEA: XBRL DOCUMENT v3.21.2
Commitments and Contingencies (Details)
$ in Thousands
Jun. 30, 2021
USD ($)
Other Commitments [Line Items]  
Contingent liability under letters of credit $ 40,915
Outstanding obligations under construction agreements 2,841
Secured by restricted cash | Letter of Credit  
Other Commitments [Line Items]  
Contingent liability under letters of credit $ 40,600