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FAIR VALUE MEASUREMENTS - SECURITIES WITH UNREALIZED LOSSES (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months - Estimated Fair Value | $ 129,166 | $ 128,591
Less Than 12 Months - Gross Unrealized Losses | (434) | (170)
12 Months or Longer - Estimated Fair Value | 31,865 | 4,993
12 Months or Longer - Gross Unrealized Losses | (210) | (7)
Total - Estimated Fair Value | 161,031 | 133,584
Total - Gross Unrealized Losses | (644) | (177)
U.S. Treasury securities (due in less than one year) |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months - Estimated Fair Value | 17,333 | 15,567
Less Than 12 Months - Gross Unrealized Losses | (147) | (18)
12 Months or Longer - Estimated Fair Value | 6,986 |
12 Months or Longer - Gross Unrealized Losses | (27) |
Total - Estimated Fair Value | 24,319 | 15,567
Total - Gross Unrealized Losses | (174) | (18)
U.S. Treasury securities (due in one to two years) |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months - Estimated Fair Value |  | 1,521
Less Than 12 Months - Gross Unrealized Losses |  | (3)
Total - Estimated Fair Value |  | 1,521
Total - Gross Unrealized Losses |  | (3)
Municipal securities (due in less than one year) |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months - Estimated Fair Value | 2,950 |
Less Than 12 Months - Gross Unrealized Losses | (50) |
Total - Estimated Fair Value | 2,950 |
Total - Gross Unrealized Losses | (50) |
Municipal securities (due in one to two years) |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months - Estimated Fair Value |  | 2,985
Less Than 12 Months - Gross Unrealized Losses |  | (15)
Total - Estimated Fair Value |  | 2,985
Total - Gross Unrealized Losses |  | (15)
Government-sponsored enterprise securities (due in less than one year) |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months - Estimated Fair Value | 2,956 | 1,500
12 Months or Longer - Estimated Fair Value | 4,971 | 4,993
12 Months or Longer - Gross Unrealized Losses | (29) | (7)
Total - Estimated Fair Value | 7,927 | 6,493
Total - Gross Unrealized Losses | (29) | (7)
Commercial paper (due in less than one year) |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months - Estimated Fair Value | 99,936 | 66,872
Less Than 12 Months - Gross Unrealized Losses | (222) | (38)
Total - Estimated Fair Value | 99,936 | 66,872
Total - Gross Unrealized Losses | (222) | (38)
Corporate notes (due in less than one year) |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months - Estimated Fair Value | 5,991 | 16,001
Less Than 12 Months - Gross Unrealized Losses | (15) | (17)
12 Months or Longer - Estimated Fair Value | 19,908 |
12 Months or Longer - Gross Unrealized Losses | (154) |
Total - Estimated Fair Value | 25,899 | 16,001
Total - Gross Unrealized Losses | $ (169) | (17)
Corporate notes (due in one to two years) |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months - Estimated Fair Value |  | 24,145
Less Than 12 Months - Gross Unrealized Losses |  | (79)
Total - Estimated Fair Value |  | 24,145
Total - Gross Unrealized Losses |  | $ (79)

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