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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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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Apr. 01, 2018	Mar. 31, 2018
Related Party Transaction [Line Items]
Prepaid expenses and other current assets	$ 32,407		$ 38,128	$ 33,502
Related party accounts payable	25,122			30,133
Total cost of revenue	62,027	$ 66,562
Research and development expenses	55,463	58,966
Sales and marketing	78,132	85,361
General and administrative expenses	26,059	29,872
Cash flows, due from related party	(1,536)	0
Cash flows, due to related party	250	(22)
Product
Related Party Transaction [Line Items]
Total cost of revenue	32,965	36,462
Service
Related Party Transaction [Line Items]
Total cost of revenue	29,062	30,100
Affiliated Entity
Related Party Transaction [Line Items]
Prepaid expenses and other current assets	1,651			3,187
Related party accounts payable	619			369
Research and development expenses	2	3
Sales and marketing	0	2
General and administrative expenses	13	244
Cash flows, due from related party	1,536	0
Cash flows, due to related party	250	(22)
Affiliated Entity \| Product
Related Party Transaction [Line Items]
Total cost of revenue	0	245
Affiliated Entity \| Service
Related Party Transaction [Line Items]
Total cost of revenue	174	29
Danaher \| Affiliated Entity
Related Party Transaction [Line Items]
Prepaid expenses and other current assets	194			252
Related party accounts payable	259			0
Research and development expenses	0	0
Sales and marketing	0	2
General and administrative expenses	0	1
Related party transaction	0	3
Cash flows, due from related party	58	0
Cash flows, due to related party	259	63
Danaher \| Affiliated Entity \| Product
Related Party Transaction [Line Items]
Total cost of revenue	0	0
Danaher \| Affiliated Entity \| Service
Related Party Transaction [Line Items]
Total cost of revenue	0	0
Fortive \| Affiliated Entity
Related Party Transaction [Line Items]
Prepaid expenses and other current assets	1,457			2,935
Related party accounts payable	360			$ 369
Research and development expenses	2	3
Sales and marketing	0	0
General and administrative expenses	13	243
Related party transaction	189	520
Cash flows, due from related party	1,478	0
Cash flows, due to related party	(9)	(85)
Fortive \| Affiliated Entity \| Product
Related Party Transaction [Line Items]
Total cost of revenue	0	245
Fortive \| Affiliated Entity \| Service
Related Party Transaction [Line Items]
Total cost of revenue	$ 174	$ 29