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STOCKHOLDERS' EQUITY - JonesTrading (Details) - USD ($) $ in Thousands		12 Months Ended
	Aug. 14, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Proceeds from sale of common stock included in accounts receivable		$ 0	$ 0	$ 2,848
Sale of Stock, Number of Shares Issued in Transaction	2,415,000
Proceeds from Issuance of Common Stock included in Accounts Receivable			$ 2,800	$ 2,800
Common Stock, Aggregate Offering Price		$ 150,000
At-The-Market Agreement [Member] \| JonesTrading Institutional Services LLC [Member]
Class of Stock [Line Items]
Sale of Stock, Number of Shares Issued in Transaction			415,904	7,590,498