SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)		9 Months Ended	12 Months Ended			36 Months Ended
	Jun. 30, 2016 Segment reporting_unit	Mar. 31, 2017 USD ($) Segment reporting_unit	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2017 USD ($) company	Aug. 20, 2017 USD ($)	Aug. 19, 2016 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments | Segment	5	1
Unrecognized accounts receivable and deferred revenue		$ 17,900,000	$ 17,900,000	$ 2,000,000		$ 17,900,000
Number of reporting units | reporting_unit	5	2
Number of companies acquired | company						2
Fair value of contingent liability		$ 5,449,000	5,449,000	7,293,000		$ 5,449,000
Amortization included as cost of product			594,000	0	$ 0
Capitalized software development costs		1,400,000	1,400,000	1,600,000		1,400,000
Foreign currency losses			2,500,000	1,500,000	1,400,000
Advertising expense			$ 8,100,000	$ 6,400,000	$ 3,100,000
Computer equipment and internal use software
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life			3 years
Avvasi
Summary Of Significant Accounting Policies [Line Items]
Fair value of contingent liability								$ 660,000
Forecast | Avvasi
Summary Of Significant Accounting Policies [Line Items]
Fair value of contingent liability							$ 660,000
Customer Concentration Risk | Accounts Receivable | Danaher
Summary Of Significant Accounting Policies [Line Items]
Accounts receivable		$ 3,600,000	$ 3,600,000			$ 3,600,000