Quarterly report pursuant to Section 13 or 15(d)

TEMPORARY EQUITY AND STOCKHOLDERS' EQUITY - Summary of Accumulated but Unpaid Preferred Dividends (Detail)

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TEMPORARY EQUITY AND STOCKHOLDERS' EQUITY - Summary of Accumulated but Unpaid Preferred Dividends (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Series A Preferred Stock    
Class of Stock [Line Items]    
Beginning balance $ 37,298 $ 34,812
Accumulated 2,514 2,486
Distributed 0 0
Ending balance 39,812 37,298
Series A-1 Preferred Stock    
Class of Stock [Line Items]    
Beginning balance 21,274 18,608
Accumulated 2,695 2,666
Distributed 0 0
Ending balance 23,969 21,274
Series B Preferred Stock    
Class of Stock [Line Items]    
Beginning balance 36,151 33,910
Accumulated 2,323 2,241
Distributed 0 0
Ending balance $ 38,474 $ 36,151