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SUBSEQUENT EVENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended 4 Months Ended
Apr. 18, 2018
Feb. 28, 2018
Mar. 31, 2018
Mar. 31, 2017
Apr. 17, 2018
Dec. 31, 2017
Jun. 16, 2016
Subsequent Events [Abstract]              
Proceeds from debt     $ 75,943 $ 25,000      
Class A Common Stock [Member]              
Subsequent Events [Abstract]              
Shares issued (in shares)   1,535,652          
4.75% Convertible Notes due 2020 [Member]              
Subsequent Events [Abstract]              
Original principal amount     $ 210,000       $ 210,000
Interest rate     4.75%        
Outstanding balance     $ 210,000 [1],[2]     $ 210,000  
Subsequent Event [Member] | Credit Agreement [Member] | Maximum [Member]              
Subsequent Events [Abstract]              
Consolidated leverage ratio 2.25            
Subsequent Event [Member] | Credit Agreement [Member] | Minimum [Member]              
Subsequent Events [Abstract]              
Consolidated interest coverage ratio 3.00            
Subsequent Event [Member] | Term Loan Facility [Member]              
Subsequent Events [Abstract]              
Original principal amount $ 400,000            
Term of loan 5 years            
Frequency of payment Quarterly            
Subsequent Event [Member] | Term Loan Facility [Member] | First Year [Member]              
Subsequent Events [Abstract]              
Annual amortization percentage 5.00%            
Subsequent Event [Member] | Term Loan Facility [Member] | Second Year [Member]              
Subsequent Events [Abstract]              
Annual amortization percentage 5.00%            
Subsequent Event [Member] | Term Loan Facility [Member] | Third Year [Member]              
Subsequent Events [Abstract]              
Annual amortization percentage 7.50%            
Subsequent Event [Member] | Term Loan Facility [Member] | Fourth Year [Member]              
Subsequent Events [Abstract]              
Annual amortization percentage 7.50%            
Subsequent Event [Member] | Term Loan Facility [Member] | Fifth Year [Member]              
Subsequent Events [Abstract]              
Annual amortization percentage 10.00%            
Subsequent Event [Member] | Term Loan Facility [Member] | LIBOR [Member]              
Subsequent Events [Abstract]              
Basis spread on variable rate 2.25%            
Subsequent Event [Member] | Revolving Credit Facility [Member]              
Subsequent Events [Abstract]              
Borrowing capacity $ 350,000            
Term of loan 5 years            
Proceeds from debt $ 78,500            
Subsequent Event [Member] | Revolving Credit Facility [Member] | LIBOR [Member]              
Subsequent Events [Abstract]              
Basis spread on variable rate 2.25%            
Subsequent Event [Member] | 4.75% Convertible Notes due 2020 [Member]              
Subsequent Events [Abstract]              
Interest rate 4.75%            
Payment for principal and accrued interest $ 213,400            
Accrued interest         $ 3,400    
Extension fee $ 105            
Extension fee percentage 0.05%            
[1] As of March 31, 2018, the current portion of the Company's debt (i.e. becoming due in the next 12 months) included $17.5 million of the balance of its U.S. dollar denominated debt under the Credit Agreement facility, $8.5 million of the balance of its Japanese yen-denominated debt under the Credit Agreement facility, $4.1 million of the Japan subsidiary loan and the $210.0 million convertible note. The Company classified the $122.5 million borrowed under the revolving line of credit as short term because it was the Company's intention to use the line of credit to borrow and pay back funds over short periods of time.
[2] The carrying value of the debt reflects the amounts stated in the above table less debt issuance costs of $1.7 million related to the Credit Agreement, which is not reflected in this table.