SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Fair Value Measurements) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term Loan Agreement and First Lien Term Loans	$ 662,403	$ 705,699
2016 CAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current and long term liabilities	0
Current and long term liabilities		1,081
2019 SWAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current and long term liabilities	37,989
Current and long term liabilities		9,477
Level 1 \| 2016 CAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current and long term liabilities	0
Current and long term liabilities		0
Level 1 \| 2019 SWAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current and long term liabilities	0
Current and long term liabilities		0
Level 2 \| 2016 CAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current and long term liabilities	0
Current and long term liabilities		1,081
Level 2 \| 2019 SWAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current and long term liabilities	37,989
Current and long term liabilities		9,477
Level 3 \| 2016 CAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current and long term liabilities	0
Current and long term liabilities		0
Level 3 \| 2019 SWAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current and long term liabilities	0
Current and long term liabilities		0
Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term Loan Agreement and First Lien Term Loans	661,640	708,948
Estimate of Fair Value Measurement \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term Loan Agreement and First Lien Term Loans	0	0
Estimate of Fair Value Measurement \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term Loan Agreement and First Lien Term Loans	661,640	708,948
Estimate of Fair Value Measurement \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term Loan Agreement and First Lien Term Loans	$ 0	$ 0

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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