General form of registration statement for all companies including face-amount certificate companies

NATURE OF OPERATIONS - Narrative (Details)

v3.22.0.1
NATURE OF OPERATIONS - Narrative (Details)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
subsidiary
segment
Dec. 31, 2020
USD ($)
subsidiary
segment
Number of indirect wholly-owned subsidiaries | subsidiary 2 2
Number of operating segments | segment 1 1
Percentage of decline in number of procedures performed due to COVID-19 pandemic   70.00%
Principal payment of notes   $ 9,500
PPP Loan    
Principal payment of notes   1,200
Neuro Pro Monitoring | Due May 15, 2020    
Principal payment of notes   $ 700