Income Taxes (Tables)

12 Months Ended

Jan. 31, 2018

Schedule of Loss Before Provision For Income

The components of loss before provision for income taxes were as follows (in thousands):

	Year Ended January 31,
	2018			2017			2016
United States	$	(107,701	)	$	(115,640	)	$	(155,794	)
Foreign		(46,544	)		(35,233	)		(46,464	)
Total	$	(154,245	)	$	(150,873	)	$	(202,258	)

Schedule of Provision For Income Taxes

The components of the provision for income taxes were as follows (in thousands):

	Year Ended January 31,
	2018			2017			2016
Current:
Federal	$	(430	)	$	26		$	29
State		75			122			146
Foreign		1,426			770			298
Total	$	1,071		$	918		$	473
Deferred:
Federal	$	(134	)	$	96		$	61
State		18			—			—
Foreign		(240	)		(100	)		156
Total	$	(356	)	$	(4	)	$	217
Provision for income taxes	$	715		$	914		$	690

Schedule of Reconciliation of The Federal Statutory Income Tax Rate And The Provision For Income Taxes

The items accounting for the difference between income taxes computed at the federal statutory income tax rate of 32.92% and the provision for income taxes consisted of the following (in thousands):

	Year Ended January 31,
	2018			2017			2016
Tax benefit at federal statutory rate	$	(50,772	)	$	(51,297	)	$	(68,767	)
State taxes, net of federal benefit		(7,803	)		(7,778	)		(8,799	)
Foreign rate difference		7,988			7,363			6,744
Nondeductible expenses		689			594			429
Research and development credit		(3,967	)		(3,607	)		(3,533	)
Stock-based compensation		(4,148	)		6,451			6,214
Change in reserve for unrecognized tax benefits		3,537			3,634			3,562
Other		(383	)		97			61
Change in valuation allowance, including the effect of tax rate change		(34,119	)		45,457			64,779
Effect of tax rate change on deferred tax assets		89,693			—			—
Total provision for income taxes	$	715		$	914		$	690

Schedule of Components of Deferred Tax Assets and Liabilities

The significant components of our deferred tax assets and liabilities were as follows (in thousands):

	January 31,
	2018			2017
Deferred tax assets:
Net operating loss carryforward	$	210,143		$	227,023
Accruals and reserves		17,433			23,960
Stock-based compensation		11,673			13,304
Depreciation and amortization		5,809			7,513
Tax credit carryover		4,325			4,002
Acquired intangible assets		597			811
Total deferred tax assets		249,980			276,613
Valuation allowance		(249,359	)		(276,392	)
Total deferred tax assets, net of valuation allowance		621			221
Deferred tax liabilities:
Goodwill with indefinite life amortization		(191	)		(157	)
Total deferred tax liabilities		(191	)		(157	)
Net deferred tax assets	$	430		$	64

Schedule of Reconciliation of Unrecognized Tax Benefit

A reconciliation of the gross unrecognized tax benefits is as follows (in thousands):

	Year Ended January 31,
	2018			2017		2016
Unrecognized tax benefits—beginning of period	$	28,644		$	20,656	$	13,607
Reductions for tax positions related to prior year		(971	)		—		—
Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations		(337	)		—		—
Additions for tax positions related to prior year		—			447		238
Additions for tax positions related to current year		8,858			7,541		6,811
Unrecognized tax benefits—end of period	$	36,194		$	28,644	$	20,656