Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Mar. 31, 2019

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

NetScout Systems, Inc.

Schedule II—Valuation and Qualifying Accounts

(in thousands)

	Balance at Beginning of Year		Additions Resulting in Charges to Operations			Charges to Other Accounts			Deductions Due to Write-Offs			Balance at End of Year
Year ended March 31, 2017
Allowance for doubtful accounts	$	5,069	$	6,961		$	(7,580	)	$	(2,384	)	$	2,066
Deferred tax asset valuation allowance	$	3,777	$	(338	)	$	(65	)	$	—		$	3,374
Year ended March 31, 2018
Allowance for doubtful accounts	$	2,066	$	695		$	(346	)	$	(424	)	$	1,991
Deferred tax asset valuation allowance	$	3,374	$	—		$	—		$	(266	)	$	3,108
Year ended March 31, 2019
Allowance for doubtful accounts	$	1,991	$	826		$	(464	)	$	(770	)	$	1,583
Deferred tax asset valuation allowance	$	3,108	$	905		$	—		$	(3,178	)	$	835