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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Fair Value Measurements) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest Rate Contracts $ 3,316  
Interest Rate Contracts   $ (595)
First Lien Term Loans 646,441 620,272
Fair Value, Inputs, Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest Rate Contracts 0  
Interest Rate Contracts   0
Fair Value, Inputs, Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest Rate Contracts 3,316  
Interest Rate Contracts   (595)
Fair Value, Inputs, Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest Rate Contracts 0  
Interest Rate Contracts   0
Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
First Lien Term Loans 633,229 628,801
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
First Lien Term Loans 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 633,229 628,801
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
First Lien Term Loans $ 0 $ 0