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Leases (Tables)
 12 Months Ended
Dec. 31, 2020
Leases [Abstract]  
Schedule of Rent and Related Expenses and Lease Costs
Rent and related expenses was as follows:
Year Ended December 31,
202020192018
Rent and related expenses$8,891 $8,179 $6,463 
The costs related to our leases were as follows:
Year Ended December 31,
20202019
Operating Leases
Operating lease costs$7,970 $7,460 
Financing Leases
Amortization expense2,129 2,129 
Interest on lease liabilities3,019 3,630 
Total financing lease costs5,148 5,759 
Total lease costs$13,118 $13,219 
Supplemental cash flow information related to our leases was as follows:
Year Ended December 31,
20202019
Cash paid for amounts included in the measurement of operating lease liabilities$7,600 $7,300 
Right-of-use assets obtained in exchange for new operating lease liabilities$12,158 $6,203 
Schedule of Assets and Liabilities, Lessee
The table below sets forth supplemental balance sheet information related to leases:
December 31,
20202019
Operating Leases
Operating lease assets$39,151 $32,791 
Current portion of operating lease liabilities$6,106 $5,802 
Long-term operating lease liabilities, net of current portion35,300 29,101 
Total Operating lease liabilities$41,406 $34,903 
Weighted-average remaining lease term12 years11 years
Weighted-average discount rate5.9 %6.3 %
Financing Leases (1)
Energy assets, net$34,005 $36,134 
Current portions of financing lease liabilities$4,273 $4,997 
Long-term financing lease liabilities, net of current portion, unamortized discount and debt issuance costs19,227 23,500 
Total financing lease liabilities$23,500 $28,497 
Weighted-average remaining lease term16 years17 years
Weighted-average discount rate11.94 %11.8 %
(1) Includes sale-leaseback transactions entered into prior to January 1, 2019 and failed sales under ASC 842.
Schedule of Finance Lease Liability Maturity
The table below sets forth our estimated minimum future lease obligations under our leases:
 Operating LeasesFinancing Leases
Year ended December 31, 
2021$8,231 $6,792 
20227,274 5,178 
20235,964 3,676 
20244,955 2,565 
20253,981 2,213 
Thereafter28,956 21,867 
Total minimum lease payments$59,361 $42,291 
Less: interest17,955 18,791 
Present value of lease liabilities$41,406 $23,500 
Schedule of Operating Lease Liability Maturity
The table below sets forth our estimated minimum future lease obligations under our leases:
 Operating LeasesFinancing Leases
Year ended December 31, 
2021$8,231 $6,792 
20227,274 5,178 
20235,964 3,676 
20244,955 2,565 
20253,981 2,213 
Thereafter28,956 21,867 
Total minimum lease payments$59,361 $42,291 
Less: interest17,955 18,791 
Present value of lease liabilities$41,406 $23,500 
Schedule of Amount Related to Sale Leasebacks
The following table presents a summary of amounts related to these sale-leasebacks included in our consolidated balance sheets:
December 31,
20202019
Deferred loss, short-term, net115 115 
Deferred loss, long-term, net1,686 1,801 
Total deferred loss$1,801 $1,916 
Deferred gain, short-term, net345 345 
Deferred gain, long-term, net5,120 5,463 
Total deferred gain$5,465 $5,808