XML 68 R57.htm IDEA: XBRL DOCUMENT v3.21.2
DEBT - Paycheck Protection Program Liquidity Facility Narrative (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Accrued interest and unused commitment fee payable $ 529 $ 564
Revolving Credit Facility | Paycheck Protection Program Liquidity Facility, CARES Act | Line of Credit    
Debt Instrument [Line Items]    
Debt outstanding $ 7,600