Annual report pursuant to Section 13 and 15(d)

REVENUE - Disaggregation of Revenue (Details)

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REVENUE - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]                    
Revenue $ 9,659 $ 8,546 $ 6,222 $ 4,765 $ 5,964 $ 3,963 $ (10,736) $ 4,333 $ 29,192 $ 3,524
Commercial insurance                    
Disaggregation of Revenue [Line Items]                    
Revenue                 20,792 (3,830)
Facility billing                    
Disaggregation of Revenue [Line Items]                    
Revenue                 3,879 1,942
Managed service agreements                    
Disaggregation of Revenue [Line Items]                    
Revenue                 3,044 4,209
Other revenue                    
Disaggregation of Revenue [Line Items]                    
Revenue                 $ 1,477 $ 1,203