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
Jun. 30, 2015
Dec. 31, 2014
Assets: [Abstract]    
Cash and cash equivalents $ 192  
Trade accounts receivable, net $ 34,842  
Fair value of interest rate swap   $ 475
Liabilities: [Abstract]    
Accounts payable $ 4,587  
Accrued expenses including estimated fair value of contingent earn-out consideration 11,920  
Accrued interest 49  
Long term liabilities including estimated fair value of contingent earn-out consideration 1,115 $ 4,123
Long-term debt 278,239  
Fair value of interest rate swap 501  
Quoted prices in active markets (Level 1) [Member]    
Assets: [Abstract]    
Cash and cash equivalents 192  
Trade accounts receivable, net 34,842  
Liabilities: [Abstract]    
Accounts payable 4,587  
Accrued expenses including estimated fair value of contingent earn-out consideration 10,730  
Accrued interest 49  
Long term liabilities including estimated fair value of contingent earn-out consideration 29  
Long-term debt $ 278,239  
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 $ 501  
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 $ 1,190  
Accrued interest    
Long term liabilities including estimated fair value of contingent earn-out consideration $ 1,086  
Long-term debt    
Fair value of interest rate swap