STOCK-BASED COMPENSATION - Schedule of Compensating Balances (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense from 2006 ESPP	$ 1,860

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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Balance Type:	debit
Period Type:	duration