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SUMMARY OF ACCOUNTING POLICIES (Details - Fair Value Measurements) |  | 24 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 01, 2020 USD ($) | Oct. 31, 2025 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) agreement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
First Lien Term Loans and SunTrust Term Loan |  |  | $ 651,580,000 | $ 662,403,000 |  |
Monthly amortization of deferred hedge gains | $ 400,000 |  |  |  |  |
Forecast |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Monthly amortization of deferred hedge gains |  | $ 300,000 |  |  |  |
2019 SWAPS |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Number of forward interest rate cap agreements | agreement |  |  |  |  |  | 4
Notional amounts |  |  |  |  |  | $ 500,000,000
2019 SWAPS | October 2023 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Number of forward interest rate cap agreements | agreement |  |  |  |  |  | 2
Notional amounts |  |  |  |  |  | $ 50,000,000
2019 SWAPS | October 2025 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Number of forward interest rate cap agreements | agreement |  |  |  |  |  | 2
Notional amounts |  |  |  |  |  | $ 200,000,000
Estimate of Fair Value Measurement |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
First Lien Term Loans and SunTrust Term Loan |  |  | 652,331,000 | 661,640,000 |  |
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
First Lien Term Loans and SunTrust Term Loan |  |  | 0 | 0 |  |
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
First Lien Term Loans and SunTrust Term Loan |  |  | 652,331,000 | 661,640,000 |  |
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
First Lien Term Loans and SunTrust Term Loan |  |  | 0 | 0 |  |
2019 Swaps - Interest Rate Contracts |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Interest rate contracts |  |  | 26,744,000 | 37,989,000 |  |
2019 Swaps - Interest Rate Contracts | 2019 SWAPS |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Notional amounts |  |  |  |  | $ 100,000,000 |
2019 Swaps - Interest Rate Contracts | Fair Value, Inputs, Level 1 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Interest rate contracts |  |  | 0 | 0 |  |
2019 Swaps - Interest Rate Contracts | Fair Value, Inputs, Level 2 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Interest rate contracts |  |  | 26,744,000 | 37,989,000 |  |
2019 Swaps - Interest Rate Contracts | Fair Value, Inputs, Level 3 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Interest rate contracts |  |  | $ 0 | $ 0 |  |

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