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INCOME TAXES (Tables)

12 Months Ended

Mar. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

he components of the consolidated provision for income taxes for fiscal 2020, 2019 and 2018 consisted of the following (in thousands):

	March 31,
Current:	2020				2019				2018
Federal	$	—			$	—			$	(395	)
State	185				291				256
Foreign	647				278				185
Total current tax provision	832				569				46
Deferred
Federal	—				—				59,837
State	—				—				6,664
Foreign	—				—				(253		)
Total deferred tax provision	—				—				66,248
Income tax provision	$	832			$	569			$	66,294

Schedule of Deferred Tax Assets and Liabilities

Deferred tax assets and (liabilities) were comprised of the following (in thousands):

	March 31,
	2020				2019
Deferred tax assets
Net operating loss carryforwards	$	109,734			$	61,740
Research and development and other credit carryforwards	19,413				15,573
Stock-based compensation	10,343				9,006
Reserves and allowances	3,974				5,697
Lease liability	24,492				—
Fixed assets and intangibles	5,314				2,709
Gross deferred tax assets	173,270				94,725
Valuation allowance	(115,435		)		(65,948		)
Total deferred tax assets	$	57,835			$	28,777
Deferred tax liabilities
Deferred sales commissions	(21,608		)		(12,221		)
Convertible debt	(16,626		)		(16,556		)
Lease asset	(19,601		)		—
Net deferred taxes	$	—			$	—

Schedule of Effective Income Tax Rate Reconciliation

A reconciliation of the Company's provision (benefit) for income taxes to the amounts computed using the statutory U.S. federal income tax rate is as follows (in thousands):

	Years Ended March 31,
	2020				2019				2018
Tax benefit at statutory rate	$	(36,163	)		$	(18,441	)		$	(11,790	)
State income taxes before valuation allowance, net of federal effect	(7,680		)		(3,612		)		(1,042		)
Foreign tax rate differential	(1,422		)		71				(1,188		)
Research and development credits	(3,892		)		(3,744		)		(2,189		)
Change in valuation allowance	51,741				30,558				56,663
Compensation/option differences	(6,584		)		(7,277		)		(4,965		)
Non-deductible compensation	3,017				1,200				1,132
Tax Act rate change impact	—				—				22,630
Foreign loss not benefited	107				159				6,847
Other	1,708				1,655				196
Total income tax provision (benefit)	$	832			$	569			$	66,294

Summary of Income Tax Contingencies

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):

	Unrecognized Tax Benefits
	2020				2019				2018
Balance at beginning of year	$	5,033			$	3,980			$	3,331
Gross increases - tax position in prior period	—				17				—
Gross increases - tax position related to the current year	1,082				1,036				649
Balance at end of year	$	6,115			$	5,033			$	3,980

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.

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