FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Financial Assets and Liabilities

The following tables present the Company’s financial assets and liabilities measured on a recurring basis using the fair value hierarchy at March 31, 2019 and 2018 (in thousands):

	Fair Value Measurements at
	March 31, 2019
	Level 1		Level 2			Level 3		Total
ASSETS:
Cash and cash equivalents	$	409,632	$	—		$	—	$	409,632
U.S. government and municipal obligations	10,732		16,890			—		27,622
Commercial paper	—		48,722			—		48,722
Corporate bonds	1,012		—			—		1,012
Derivative financial instruments	—		58			—		58
Contingent consideration	—		—			762		762
	$	421,376	$	65,670		$	762	$	487,808
LIABILITIES:
Derivative financial instruments	$	—	$	(68	)	$	—	$	(68	)
	$	—	$	(68	)	$	—	$	(68	)

	Fair Value Measurements at
	March 31, 2018
	Level 1		Level 2			Level 3			Total
ASSETS:
Cash and cash equivalents	$	369,821	$	—		$	—		$	369,821
U.S. government and municipal obligations	14,513		27,673			—			42,186
Commercial paper	—		33,003			—			33,003
Corporate bonds	2,752		—			—			2,752
Derivative financial instruments	—		122			—			122
	$	387,086	$	60,798		$	—		$	447,884
LIABILITIES:
Contingent purchase consideration	$	—	$	—		$	(5,464	)	$	(5,464	)
Derivative financial instruments	—		(40		)	—			(40		)
	$	—	$	(40	)	$	(5,464	)	$	(5,504	)

Schedule of Reconciliation of Changes in Fair Value of Level Three Financial Liabilities

The following table sets forth a reconciliation of changes in the fair value of the Company’s Level 3 financial liabilities for the year ended March 31, 2018 (in thousands):

	Contingent Purchase Consideration
Balance at March 31, 2017	$	(5,449	)
Additions to Level 3	(523		)
Change in fair value of contingent consideration	(152		)
Payments made	660
Balance at March 31, 2018	$	(5,464	)

The following table sets forth a reconciliation of changes in the fair value of the Company’s Level 3 financial liabilities for the year ended March 31, 2019 (in thousands):

	Contingent Purchase Consideration			Contingent Consideration
Balance at March 31, 2018	$	(5,464	)	$	—
Contingent consideration pursuant to divestiture of the HNT tools business	—			2,257
Change in fair value of contingent consideration	(102		)	(1,495		)
Payments made	5,566			—
Balance at March 31, 2019	$	—		$	762