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COMMITMENTS AND CONTINGENCIES (Tables)
 9 Months Ended
Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]  
Components of Lease
The components of lease expense are presented as follows:
Three Months Ended
September 30,		Nine Months Ended
September 30,
2021202020212020
(In thousands)
Operating lease costs$1,684 $1,274 $5,130 $3,776 
The components of lease liabilities are presented as follows:
September 30,
2021		December 31,
2020
(In thousands)
Operating lease liabilities, current (Accrued liabilities)
$4,261 $4,542 
Operating lease liabilities, noncurrent (Other liabilities)
12,492 15,209 
Total operating lease liabilities
$16,753 $19,751 
Supplemental lease information:
Weighted average remaining lease term
6.0 years6.4 years
Weighted average discount rate
7.5%7.7%
Supplemental cash flow and other information related to operating leases, are as follows:
Three Months Ended
September 30,		Nine Months Ended
September 30,
2021202020212020
(In thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases
$1,529 $1,252 $4,315 $3,411 
Non-cash investing activities:
Lease liabilities arising from obtaining right-of-use assets
$437 $3,798 $437 $6,739 
Schedule of Future Minimum Rental Payments for Operating Leases
Undiscounted cash flows of operating lease liabilities as of September 30, 2021 are as follows:
Lease Amounts
(In thousands)
Year:
2021 (remaining three months)$1,540 
20224,729 
20234,108 
20243,141 
20252,363 
2026 and thereafter4,018 
Total lease payments
19,899 
Less: imputed lease interest
(3,146)
Total lease liabilities
$16,753