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STOCKHOLDERS' EQUITY (Tables)
 9 Months Ended
Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity
Information with respect to the Company’s non-vested time-based restricted stock units for the nine months ended September 30, 2023 was as follows:
 Number of Restricted Stock UnitsWeighted-
Average
Grant-Date
Fair Value		Weighted-
Average
Remaining
Contractual
Term (years)		Aggregate
Intrinsic
Value
(in thousands)		Shares Retained to Cover Statutory Minimum Withholding Taxes
Non-vested at January 1, 2023788,217 $28.24  — 
Granted607,432 30.00  — 
Vested(426,811)25.00  (144,519)
Forfeited(68,669)33.04  — 
Non-vested at September 30, 2023
900,169 $30.600.95$28,778

Information with respect to the Company’s non-vested performance-based restricted stock units for the nine months ended September 30, 2023 was as follows:
 Number of Performance-based Restricted Stock UnitsWeighted-
Average
Grant-Date
Fair Value		Weighted-
Average
Remaining
Contractual
Term (years)		Aggregate
Intrinsic
Value
(in thousands)		Shares Retained to Cover Statutory Minimum Withholding Taxes
Non-vested at January 1, 2023294,011 $23.20  — 
Granted240,598 26.12  — 
Vested(254,320)15.34  (114,881)
Forfeited— —  — 
Non-vested at September 30, 2023
280,289 $32.851.17$8,961
Share-based Payment Arrangement, Expensed and Capitalized, Amount tock-based compensation expense by award type for the three and nine months ended September 30, 2023 and 2022 (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
 2023202220232022
Share-based compensation expense by type:
Time-based Restricted Stock Units$3,705 $2,892 $12,618 $8,272 
Performance-based Restricted Stock Units1,153 1,007 3,175 2,598 
ESPP45 48 145 144 
Total share-based compensation expense$4,903 $3,947 $15,938 $11,014 

Stock-based compensation was included in the following captions in the Company’s condensed consolidated statements of operations for the three and nine months ended September 30, 2023 and 2022 (in thousands):

Three Months Ended September 30,Nine Months Ended September 30,
 2023202220232022
Cost of revenues$722 $588 $2,135 $1,603 
Research and development expenses979 498 2,663 1,363 
Marketing and selling expenses886 743 2,731 2,141 
General and administrative expenses2,316 2,118 8,409 5,907 
Total share-based compensation expense$4,903 $3,947 $15,938 $11,014