RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2017
Related Party Transaction [Line Items]
Related party prepaid expenses and other current assets	$ 29,043		$ 29,043		$ 36,972
Related party accounts payable	30,128		30,128		37,407
Cost of product revenue	45,841	$ 56,647	83,686	$ 116,474
Cost of service revenue	28,402	27,863	57,119	55,070
Research and development expenses	58,509	61,046	117,475	121,597
Sales and marketing	77,266	76,706	162,627	158,294
General and administrative expenses	29,495	31,527	59,367	62,454
Cash flows, due from related party			(554)	(22,770)
Cash flows, due to related party			168	(2,579)
Affiliated Entity
Related Party Transaction [Line Items]
Related party prepaid expenses and other current assets	3,082		3,082		3,585
Related party accounts payable	612		612		444
Cost of product revenue	0	2,486	245	7,063
Cost of service revenue	259	282	288	472
Research and development expenses	0	548	3	1,573
Sales and marketing	0	872	2	2,472
General and administrative expenses	700	2,039	944	3,543
Cash flows, due from related party			554	22,770
Cash flows, due to related party			168	(2,579)
Danaher \| Affiliated Entity
Related Party Transaction [Line Items]
Related party prepaid expenses and other current assets	194		194		404
Cost of product revenue	0	113	0	4,690
Cost of service revenue	0	268	0	458
Research and development expenses	0	652	0	1,677
Sales and marketing	0	722	2	2,322
General and administrative expenses	3	998	4	2,502
Related party transaction, Total	3	2,753	6	11,649
Cash flows, due from related party			154	16,955
Cash flows, due to related party			0	(2,955)
Fortive \| Affiliated Entity
Related Party Transaction [Line Items]
Related party prepaid expenses and other current assets	2,888		2,888		3,181
Related party accounts payable	612		612		$ 444
Cost of product revenue	0	2,373	245	2,373
Cost of service revenue	259	14	288	14
Research and development expenses	0	(104)	3	(104)
Sales and marketing	0	150	0	150
General and administrative expenses	697	1,041	940	1,041
Related party transaction, Total	$ 956	$ 3,474	1,476	3,474
Cash flows, due from related party			400	5,815
Cash flows, due to related party			$ 168	$ 376

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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Total costs related to goods produced and sold during the reporting period.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or 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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