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LEASES (Tables)
 9 Months Ended
Sep. 30, 2021
Leases [Abstract]  
Lease, Cost
The components of lease expense are as follows (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
(unaudited)(unaudited)(unaudited)(unaudited)
Operating lease costs$6,784 $6,882 $21,044 $21,573 
Variable lease costs1,503 1,146 4,106 3,727 
Finance lease costs:
Amortization of right-of-use assets155 110 467 328 
Interest on lease liabilities84 80 252 242 
Total lease cost$8,526 $8,218 $25,869 $25,870 
Schedule of Other Information Related to Leases
Other information related to leases are as follows (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
Supplemental cash flow information:(unaudited)(unaudited)(unaudited)(unaudited)
Cash paid for amounts included in measurement of lease liabilities
Operating cash flows from operating leases6,226 4,675 17,569 15,797 
Operating cash flows from finance leases81 82 252 247 
Financing cash flows from finance leases119 71 356 205 
Right-of-use assets obtained in exchange for lease obligations
Operating leases721 382 9,304 1,969 
Finance leases611 3 1,017 48 
Amounts Recognized in Balance Sheet for Leases
Amounts recognized in the condensed consolidated balance sheet are as follows (in thousands):
September 30, 2021December 31, 2020
Operating Leases:(unaudited)
Operating lease right-of-use assets$63,471 $63,869 
Current portion of operating lease obligations16,502 17,375 
Operating lease obligations (non-current)51,867 52,207 
Weighted average remaining lease term6.0 years6.0 years
Weighted average discount rate6.8 %6.7 %

September 30, 2021December 31, 2020
Finance Leases:(unaudited)
Property, plant and equipment, net$5,305 $4,779 
Current portion of long-term debt and finance lease obligations663 337 
Long-term debt and finance lease obligations5,129 4,816 
Weighted average remaining lease term10.0 years12.0 years
Weighted average discount rate6.4 %6.2 %
Schedule of Finance Lease Liability
As of September 30, 2021, future minimum lease payments under non-cancellable leases (excluding short-term leases) are as follows (in thousands):
Operating LeasesFinance Leases
(unaudited)(unaudited)
2021 (Remainder of the year)$7,234 $327 
202218,663 978 
202314,675 888 
202411,591 730 
20258,675 568 
Thereafter25,321 4,557 
Total future minimum lease payments86,159 8,048 
Less: Interest(17,790)(2,256)
Present value of lease liabilities$68,369 $5,792 
Schedule of Operating Lease Liability
As of September 30, 2021, future minimum lease payments under non-cancellable leases (excluding short-term leases) are as follows (in thousands):
Operating LeasesFinance Leases
(unaudited)(unaudited)
2021 (Remainder of the year)$7,234 $327 
202218,663 978 
202314,675 888 
202411,591 730 
20258,675 568 
Thereafter25,321 4,557 
Total future minimum lease payments86,159 8,048 
Less: Interest(17,790)(2,256)
Present value of lease liabilities$68,369 $5,792