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STOCKHOLDERS' EQUITY (Tables)
9 Months Ended
Sep. 30, 2023
Equity [Abstract]  
Schedule of Common Stock Shares Reserved for Future Issuance
The Company had reserved shares of common stock for issuance as follows (in thousands):

September 30, 2023December 31, 2022
Options issued and outstanding307 328 
Unvested RSUs and PRSUs 1
2,747 2,026 
Shares available for grant under future stock plans6,728 7,823 
Shares available for future issuance9,782 10,177 
1PRSUs are based on the maximum number of PRSUs in the key executive grant agreements. The actual number of PRSUs granted will be based on company performance criteria and relative Total Shareholder Return, as discussed in Note 12, Equity Incentive Plan and Stock-Based Compensation.