SUMMARY OF ACCOUNTING POLICIES (Details - Fair Value Measurements) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
First Lien Term Loans and SunTrust Term Loan	$ 726,972	$ 646,441
Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
First Lien Term Loans and SunTrust Term Loan	725,299	633,229
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	725,299	633,229
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
2016 Caps - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2016 Caps - Interest Rate Contracts	547	3,316
2016 Caps - Interest Rate Contracts | Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2016 Caps - Interest Rate Contracts	0	0
2016 Caps - Interest Rate Contracts | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2016 Caps - Interest Rate Contracts	547	3,316
2016 Caps - Interest Rate Contracts | Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2016 Caps - Interest Rate Contracts	0	$ 0
2019 SWAPS - Interest Rate Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2016 Caps - Interest Rate Contracts	8,630
2019 SWAPS - Interest Rate Contracts | Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2016 Caps - Interest Rate Contracts	0
2019 SWAPS - Interest Rate Contracts | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2016 Caps - Interest Rate Contracts	8,630
2019 SWAPS - Interest Rate Contracts | Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2016 Caps - Interest Rate Contracts	$ 0