SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Fair Value Measurements) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accrued expenses and other non-current liabilities
Share price	$ 18.83
Term Loan Agreement and First Lien Term Loans	$ 864,125	$ 767,875
Estimate of Fair Value Measurement
Accrued expenses and other non-current liabilities
Term Loan Agreement and First Lien Term Loans	843,594	766,973
Estimate of Fair Value Measurement | Quantib B.V.
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	3,709
Estimate of Fair Value Measurement | Heart and Lung Imaging Limited
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	11,656
Estimate of Fair Value Measurement | Aidence
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	11,158
Estimate of Fair Value Measurement | Montclair
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	1,200
Estimate of Fair Value Measurement | 2019 SWAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Current Assets and Deposits and Other	23,302
Accrued expenses and other non-current liabilities		16,319
Estimate of Fair Value Measurement | Level 1
Accrued expenses and other non-current liabilities
Term Loan Agreement and First Lien Term Loans	0	0
Estimate of Fair Value Measurement | Level 1 | Quantib B.V.
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	0
Estimate of Fair Value Measurement | Level 1 | Heart and Lung Imaging Limited
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	0
Estimate of Fair Value Measurement | Level 1 | Aidence
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	0
Estimate of Fair Value Measurement | Level 1 | Montclair
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	0
Estimate of Fair Value Measurement | Level 1 | 2019 SWAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Current Assets and Deposits and Other	0
Accrued expenses and other non-current liabilities		0
Estimate of Fair Value Measurement | Level 2
Accrued expenses and other non-current liabilities
Term Loan Agreement and First Lien Term Loans	843,594	766,973
Estimate of Fair Value Measurement | Level 2 | Quantib B.V.
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	0
Estimate of Fair Value Measurement | Level 2 | Heart and Lung Imaging Limited
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	0
Estimate of Fair Value Measurement | Level 2 | Aidence
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	0
Estimate of Fair Value Measurement | Level 2 | Montclair
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	0
Estimate of Fair Value Measurement | Level 2 | 2019 SWAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Current Assets and Deposits and Other	23,302
Accrued expenses and other non-current liabilities		16,319
Estimate of Fair Value Measurement | Level 3
Accrued expenses and other non-current liabilities
Term Loan Agreement and First Lien Term Loans	0	0
Estimate of Fair Value Measurement | Level 3 | Quantib B.V.
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	3,709
Estimate of Fair Value Measurement | Level 3 | Heart and Lung Imaging Limited
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	11,656
Estimate of Fair Value Measurement | Level 3 | Aidence
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	11,158
Estimate of Fair Value Measurement | Level 3 | Montclair
Accrued expenses and other non-current liabilities
Business combination, contingent consideration	1,200
Estimate of Fair Value Measurement | Level 3 | 2019 SWAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Current Assets and Deposits and Other	$ 0
Accrued expenses and other non-current liabilities		$ 0