INCOME TAXES (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	May. 31, 2015	Mar. 31, 2015
Income Tax Examination [Line Items]
Effective tax rate	27.40%	26.20%	23.20%	26.10%
Unrecognized tax benefits	$ 12,800,000		$ 12,800,000			$ 12,800,000
Accrued interest related to unrecognized tax benefits	1,900,000		1,900,000			1,800,000
Accrued penalties	$ 0		$ 0			$ 0
5.50% Senior Notes [Member] | Senior Notes [Member]
Income Tax Examination [Line Items]
Stated interest rate of debt instrument					5.50%