LEASES - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2019	Apr. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets	$ 65,118
Operating lease liabilities	$ 78,645
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets		$ 68,200
Operating lease liabilities		83,200
Elimination or deferred rent		$ 15,000
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Remaining lease terms	1 year
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Remaining lease terms	11 years