Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Change in Deferred Tax Asset Valuation Allowance (Details)

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INCOME TAXES - Change in Deferred Tax Asset Valuation Allowance (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
Changes in deferred tax asset valuation allowance:  
Valuation allowance, beginning balance $ 152,884
Change in valuation allowance 16,791
Valuation allowance, ending balance $ 169,675