CREDIT FACILITIES AND NOTES PAYABLE (Details - Recent Amendments to prior Credit Facilities)		12 Months Ended
	Apr. 18, 2019 USD ($) center	Dec. 31, 2021 USD ($) loan	Apr. 23, 2021 USD ($)	Aug. 28, 2020 USD ($)
Line of Credit Facility [Line Items]
Number of amendments | center	2,000
Medium-term Notes
Line of Credit Facility [Line Items]
Total credit facilities outstanding			$ 725,000,000
Amendment No. 6 First Lien Credit Agreement | Medium-term Notes
Line of Credit Facility [Line Items]
Total credit facilities outstanding	$ 100,000,000
Paycheck Protection Program Loans
Line of Credit Facility [Line Items]
Debt instrument, interest rate		1.00%
Paycheck Protection Program Loans | C O V I D19 Pandemic
Line of Credit Facility [Line Items]
PPP loans, maturity term		2 years
Number of PPP loans received | loan		4
Debt instrument, face amount		$ 4,000,000
Revolving Credit Facility | First Lien Credit Agreement Eighth Amendment | Barclays | Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, increase borrowing capacity				$ 57,500,000
Revolving Credit Facility | First Lien Credit Agreement | Barclays | Line of Credit
Line of Credit Facility [Line Items]
Credit facilities available		195,000,000
Total credit facilities outstanding		$ 0
Revolving Credit Facility | Amendment No. 6 First Lien Credit Agreement | Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, increase borrowing capacity	$ 20,000,000
Debt Instrument, Extension Period	2 years