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Restricted cash
 6 Months Ended
Jun. 30, 2022
Restricted Cash [Abstract]  
Restricted cash Restricted cash
As of June 30, 2022 and December 31, 2021, restricted cash consisted of the following:
June 30, 2022December 31, 2021
Cash held by lessor VIEs$48,666 $35,651 
Collateral for letters of credit and performance bonds27,639 27,614 
Collateral for interest rate swaps2,500 12,500 
Other restricted cash757 756 
  Total restricted cash$79,562 $76,521 
Current restricted cash$71,602 $68,561 
Non-current restricted cash7,960 7,960 
Restricted cash does not include minimum consolidated cash balances of $30,000 required to be maintained as part of the financial covenants for sale and leaseback financings and the Vessel Term Loan Facility that is included in Cash and cash equivalents on the condensed consolidated balance sheets as of June 30, 2022 and December 31, 2021.