MARKETABLE SECURITIES - Schedule of Available For Sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Available-for-sale securities
Amortized Cost	$ 497,676	$ 781,271
Gains in Accumulated Other Comprehensive Income (Loss)	0	17
Losses in Accumulated Other Comprehensive Income (Loss)	(7,917)	(1,483)
Estimated Fair Value	489,759	779,805
Cash equivalents
Available-for-sale securities
Amortized Cost	61,338	68,136
Gains in Accumulated Other Comprehensive Income (Loss)	0	0
Losses in Accumulated Other Comprehensive Income (Loss)	0	0
Estimated Fair Value	61,338	68,136
Marketable securities
Available-for-sale securities
Amortized Cost	436,338	713,135
Gains in Accumulated Other Comprehensive Income (Loss)	0	17
Losses in Accumulated Other Comprehensive Income (Loss)	(7,917)	(1,483)
Estimated Fair Value	428,421	711,669
Commercial paper \| Cash equivalents
Available-for-sale securities
Amortized Cost	58,917	64,593
Gains in Accumulated Other Comprehensive Income (Loss)	0	0
Losses in Accumulated Other Comprehensive Income (Loss)	0	0
Estimated Fair Value	58,917	64,593
U.S. government agency securities \| Cash equivalents
Available-for-sale securities
Amortized Cost	2,421	3,543
Gains in Accumulated Other Comprehensive Income (Loss)	0	0
Losses in Accumulated Other Comprehensive Income (Loss)	0	0
Estimated Fair Value	2,421	3,543
U.S. government agency securities \| Marketable securities
Available-for-sale securities
Amortized Cost	248,351	250,793
Gains in Accumulated Other Comprehensive Income (Loss)	0	0
Losses in Accumulated Other Comprehensive Income (Loss)	(4,496)	(873)
Estimated Fair Value	243,855	249,920
Corporate bonds \| Marketable securities
Available-for-sale securities
Amortized Cost	116,627	313,634
Gains in Accumulated Other Comprehensive Income (Loss)	0	13
Losses in Accumulated Other Comprehensive Income (Loss)	(2,423)	(493)
Estimated Fair Value	114,204	313,154
Certificates of deposit \| Marketable securities
Available-for-sale securities
Amortized Cost	5,500	47,147
Gains in Accumulated Other Comprehensive Income (Loss)	0	2
Losses in Accumulated Other Comprehensive Income (Loss)	0	(10)
Estimated Fair Value	5,500	47,139
Commercial paper \| Marketable securities
Available-for-sale securities
Amortized Cost	1,988	6,996
Gains in Accumulated Other Comprehensive Income (Loss)	0	0
Losses in Accumulated Other Comprehensive Income (Loss)	0	0
Estimated Fair Value	1,988	6,996
Asset backed securities \| Marketable securities
Available-for-sale securities
Amortized Cost	63,872	94,565
Gains in Accumulated Other Comprehensive Income (Loss)	0	2
Losses in Accumulated Other Comprehensive Income (Loss)	(998)	(107)
Estimated Fair Value	$ 62,874	$ 94,460

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563

+ Details

Name:	us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563

+ Details

Name:	us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, 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 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount excluding accrued interest, 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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_CashEquivalentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: