LONG-TERM DEBT (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
	May. 07, 2014	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Debt Instrument [Line Items]
Debt outstanding		$ 315,000
Term loan quarterly payment			$ 8,750
Maturity date		May 07, 2019
Term loan interest rate (in hundredth)		1.69%
Undrawn revolving loan		$ 100,000
Maturities of Long-term Debt [Abstract]
2015		17,500			$ 17,500
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		1,830			1,830
Amortization expense pertaining to Capitalized costs		153		$ 103	310	$ 103
Senior Secured Term Loan [Member]
Debt Instrument [Line Items]
Amount of loan	$ 350,000
Revolving Loan [Member]
Debt Instrument [Line Items]
Amount of loan	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		17,500			17,500
2016		17,500			17,500
2017		0			0
2018		0			0
2019		0			0
Long-term Debt [Member]
Maturities of Long-term Debt [Abstract]
2015		0			0
2016		17,500			17,500
2017		35,000			35,000
2018		35,000			35,000
2019		$ 192,500			$ 192,500