Quarterly report pursuant to Section 13 or 15(d)

REVENUE RECOGNITION - Schedule of notes receivable balances (Details)

v3.21.2
REVENUE RECOGNITION - Schedule of notes receivable balances (Details) - Notes Receivable - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Revenue Recognition (Details) - Schedule of notes receivable balances [Line Items]    
Note receivable $ 266 $ 1,166
Allowance for losses (266) (292)
Notes receivable, net $ 0 $ 874