LONG-TERM DEBT (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	May. 07, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Debt Instrument [Line Items]
Debt outstanding				$ 306,250
Term loan quarterly payment				$ 8,750
Maturity date				May 07, 2019
Term loan interest rate				1.70%
Undrawn revolving loan				$ 100,000
Maturities of Long-term Debt [Abstract]
2015		$ 8,750		8,750
2016		35,000		35,000
2017		35,000		35,000
2018		35,000		35,000
2019		192,500		192,500
Capitalized costs net of accumulated amortization		1,681		1,681
Amortization expense pertaining to capitalized costs		144	$ 193	458	$ 296
Senior Secured Term Loan [Member]
Debt Instrument [Line Items]
Amount of loan		350,000		350,000
Revolving Loan [Member]
Debt Instrument [Line Items]
Amount of loan		100,000		100,000
Revolving loan used for funding of acquisition and general corporate purposes	$ 50,000
Current Portion of Long-term Debt [Member]
Maturities of Long-term Debt [Abstract]
2015		8,750		8,750
2016		26,250		26,250
2017		0		0
2018		0		0
2019		0		0
Long-term Debt [Member]
Maturities of Long-term Debt [Abstract]
2015		0		0
2016		8,750		8,750
2017		35,000		35,000
2018		35,000		35,000
2019		$ 192,500		$ 192,500