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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Marketable Securities, Available For Sale
Cash and cash equivalents	$ 31,807	$ 21,993
Fair Value, Recurring
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	309,917	353,202
Unrealized Gain, Marketable securities, available for sale	6	21
Unrealized Losses, Marketable securities, available for sale	(553)	(1,376)
Fair Market Value, Marketable securities, available for sale	309,370	351,847
Fair Value, Recurring | Level 1 | Money market funds
Marketable Securities, Available For Sale
Cash and cash equivalents	31,249	21,893
Cash equivalents, Fair Market Value	31,249	21,893
Fair Value, Recurring | Level 2 | Commercial paper
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	90,049	144,730
Fair Market Value, Marketable securities, available for sale	90,049	144,730
Fair Value, Recurring | Level 2 | Asset-backed securities
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	17,063	23,020
Unrealized Gain, Marketable securities, available for sale		8
Unrealized Losses, Marketable securities, available for sale	(34)	(44)
Fair Market Value, Marketable securities, available for sale	17,029	22,984
Fair Value, Recurring | Level 2 | Corporate debt securities
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	47,909	54,374
Unrealized Gain, Marketable securities, available for sale	6
Unrealized Losses, Marketable securities, available for sale	(308)	(510)
Fair Market Value, Marketable securities, available for sale	47,607	53,864
Fair Value, Recurring | Level 2 | U.S. government treasury and agency securities
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	113,524	54,672
Unrealized Losses, Marketable securities, available for sale	(209)	(624)
Fair Market Value, Marketable securities, available for sale	113,315	54,048
Fair Value, Recurring | Level 2 | Supranational and sovereign government securities
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	10,123	54,513
Unrealized Gain, Marketable securities, available for sale		13
Unrealized Losses, Marketable securities, available for sale	(2)	(198)
Fair Market Value, Marketable securities, available for sale	$ 10,121	$ 54,328

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- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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