Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Summary of Fair Value of Financial Assets Measured at Fair Value (Details)

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FAIR VALUE MEASUREMENTS (Summary of Fair Value of Financial Assets Measured at Fair Value (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Assets: [Abstract]    
Cash and cash equivalents $ 186  
Trade accounts receivable, net 36,855  
Fair value of interest rate swap   $ 475
Liabilities: [Abstract]    
Accounts payable 5,909  
Accrued expenses including estimated fair value of contingent earn-out consideration 12,245  
Long term liabilities including estimated fair value of contingent earn-out consideration 934 $ 4,123
Long-term debt 272,183  
Fair value of interest rate swap 2,011  
Quoted prices in active markets (Level 1) [Member]    
Assets: [Abstract]    
Cash and cash equivalents 186  
Trade accounts receivable, net 36,855  
Liabilities: [Abstract]    
Accounts payable 5,909  
Accrued expenses including estimated fair value of contingent earn-out consideration 11,472  
Long term liabilities including estimated fair value of contingent earn-out consideration 21  
Long-term debt $ 272,183  
Fair value of interest rate swap  
Significant Other Observable Inputs (Level 2) [Member]    
Assets: [Abstract]    
Cash and cash equivalents  
Trade accounts receivable, net  
Liabilities: [Abstract]    
Accounts payable  
Accrued expenses including estimated fair value of contingent earn-out consideration  
Accrued interest  
Long term liabilities including estimated fair value of contingent earn-out consideration  
Long-term debt  
Fair value of interest rate swap $ 2,011  
Significant Unobservable Inputs (Level 3) [Member]    
Assets: [Abstract]    
Cash and cash equivalents  
Trade accounts receivable, net  
Liabilities: [Abstract]    
Accounts payable  
Accrued expenses including estimated fair value of contingent earn-out consideration $ 773  
Accrued interest  
Long term liabilities including estimated fair value of contingent earn-out consideration $ 913  
Long-term debt  
Fair value of interest rate swap