INCOME TAXES - Summary of Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Deferred tax assets:
Accrued expenses	$ 6,734	$ 3,730
Deferred revenue	13,913	9,054
Reserves	7,916	1,651
Pension and other retiree benefits	4,842	0
Net operating loss carryforwards	41,225	19,214
Tax credit carryforwards	5,824	3,838
Share-based compensation	4,975	2,660
Transaction related costs	0	4,001
Other	426	808
Total gross deferred tax assets	85,855	44,956
Valuation allowance	(3,777)	(3,906)
Net deferred tax assets	82,078	41,050
Deferred tax liabilities:
Intangible assets	(354,601)	(29,202)
Depreciation	(6,630)	(732)
Total deferred tax liability	$ (279,153)
Total deferred tax asset		$ 11,116