RELATED PARTY TRANSACTIONS - Schedule of Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2016
Related Party Transaction [Line Items]
Related party prepaid expenses and other current assets	$ 42,444		$ 42,444		$ 78,399
Related party accounts payable	45,853		45,853		43,969
Cost of product revenue	56,647	$ 75,421	116,474	$ 87,919
Cost of service revenue	27,863	24,766	55,070	33,564
Research and development expenses	61,046	65,896	121,597	83,954
Sales and marketing	76,706	79,153	158,294	117,245
General and administrative expenses	31,527	41,301	62,454	51,400
Cash flows, due from related party			(22,770)	28,878
Cash flows, due to related party			(2,579)	7,513
Affiliated Entity
Related Party Transaction [Line Items]
Related party prepaid expenses and other current assets	17,513		17,513		44,161
Related party accounts payable	4,569		4,569		5,893
Cost of product revenue	2,486	7,728	7,063	7,728
Cost of service revenue	282	2,492	472	2,492
Research and development expenses	548	10,814	1,573	10,814
Sales and marketing	872	9,078	2,472	9,078
General and administrative expenses	2,039	7,063	3,543	7,063
Cash flows, due from related party			22,770	(28,878)
Cash flows, due to related party			(2,579)	7,513
Fortive \| Affiliated Entity
Related Party Transaction [Line Items]
Related party prepaid expenses and other current assets	5,111		5,111		0
Related party accounts payable	659		659		0
Cost of product revenue	2,373	0	2,373	0
Cost of service revenue	14	0	14	0
Research and development expenses	(104)	0	(104)	0
Sales and marketing	150	0	150	0
General and administrative expenses	1,041	0	1,041	0
Related party transaction, Total	3,474	0	3,474	0
Cash flows, due from related party			5,815	0
Cash flows, due to related party			376	0
Danaher \| Affiliated Entity
Related Party Transaction [Line Items]
Related party prepaid expenses and other current assets	12,402		12,402		44,161
Related party accounts payable	3,910		3,910		$ 5,893
Cost of product revenue	113	7,728	4,690	7,728
Cost of service revenue	268	2,492	458	2,492
Research and development expenses	652	10,814	1,677	10,814
Sales and marketing	722	9,078	2,322	9,078
General and administrative expenses	998	7,063	2,502	7,063
Related party transaction, Total	$ 2,753	$ 37,175	11,649	37,175
Cash flows, due from related party			16,955	(28,878)
Cash flows, due to related party			$ (2,955)	$ 7,513

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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