Leases (Tables)
 6 Months Ended
Jun. 30, 2021
Leases [Abstract]  
Schedule of Discount Rate and Remaining Lease Term, Components of Lease Expenses, and Other Information The table below summarizes the Company’s weighted-average discount rate and weighted-average remaining lease term as of the period presented.
As of June 30, 2021
Weighted-average discount rate4.65 %
Weighted-average remaining lease term (months)122
The following table presents the components of the Company’s lease expenses for the periods presented.
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2021202020212020
Lease costs
Operating lease cost
$842 $1,527 $1,715 $5,832 
Variable lease cost
13 3,278 22 4,485 
Short-term lease cost9,973 11,192 17,167 29,017 
Total lease cost
$10,828 $15,997 $18,904 $39,334 
Schedule of Maturities of Operating Lease Liabilities
Maturities of the Company’s long-term operating lease liabilities by fiscal year as of June 30, 2021 are as follows:
(in thousands)
Total(2)
2021(1)
$247 
20221,038 
20231,977 
20242,031 
20252,086 
2026 and thereafter12,669 
Total lease payments20,048 
  Less: imputed interest(4,602)
Present value of lease liabilities (3)
$15,446 
(1)     Excludes payments made during the six months ended June 30, 2021.
(2)    Total lease payments exclude variable lease payments which can be charged under the terms of the lease agreements.
(3)     This amount is included in current and noncurrent liabilities in the line item Operating lease liabilities in the consolidated balance sheets as of June 30, 2021.
Schedule of Cash Flow, Supplemental Disclosures
The following table presents supplemental cash flow information related to the Company’s leases for the periods presented.
Six Months Ended June 30,
(in thousands)20212020
Operating lease liability payments:
Cash used in operating activities$1,715 $4,030 
Cash used in investing activities$— $1,802 
Right-of-use assets recognized (derecognized) with offsetting operating lease liabilities$12,984 $(3,454)