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STOCK-BASED COMPENSATION - 2012 Plan and ESPP (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($) Item shares
2012 Equity Incentive Plan |
Stock-based compensation |
Shares remaining available for issuance | 4,978,521
ESPP |
Stock-based compensation |
Purchase price as a percentage of fair market value of stock | 85.00%
Total duration of consecutive and overlapping offering periods | 24 months
Number of offering periods | Item | 4
Duration of purchase period | 6 months
Maximum contributions as a percentage of employee's eligible compensation | 15.00%
Maximum number of shares an employee may purchase during any purchase period | 2,500
Maximum value of shares an employee may purchase in a calendar year | $ | $ 25,000
Shares remaining available for issuance | 171,827

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- Definition The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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