LONG-TERM DEBT (Details) - USD ($) $ in Thousands		6 Months Ended
	Feb. 01, 2016	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	May 07, 2014
Debt Instrument [Line Items]
Debt outstanding		$ 325,000
Term loan quarterly payment		$ 8,750
Maturity date		May 07, 2019
Term loan interest rate		1.96%
Undrawn revolving loan		$ 55,000
Maturities of Long-term Debt [Abstract]
Future principle payments		243,732		$ 260,963
Less current portion of long-term debt		35,000		$ 35,000
Capitalized costs net of accumulated amortization		1,268
Amortization expense pertaining to capitalized costs		268	$ 310
Term Loan [Member]
Debt Instrument [Line Items]
Amount of loan					$ 350,000
Maturities of Long-term Debt [Abstract]
July 1, 2016 to December 31, 2016		17,500
2017		35,000
2018		35,000
2019		192,500
Future principle payments		280,000
Less unamortized debt financing costs		1,268
Less current portion of long-term debt		35,000
Total long-term debt		243,732
Revolving Loan [Member]
Debt Instrument [Line Items]
Amount of loan					$ 100,000
Revolving loan used for funding of acquisition and general corporate purposes	$ 65,000
Maturities of Long-term Debt [Abstract]
July 1, 2016 to December 31, 2016		0
2017		0
2018		0
2019		45,000
Future principle payments		45,000
Less unamortized debt financing costs		0
Less current portion of long-term debt		0
Total long-term debt		45,000
Total Debt [Member]
Maturities of Long-term Debt [Abstract]
July 1, 2016 to December 31, 2016		17,500
2017		35,000
2018		35,000
2019		237,500
Future principle payments		325,000
Less unamortized debt financing costs		1,268
Less current portion of long-term debt		35,000
Total long-term debt		$ 288,732