Income Taxes (Tables)

12 Months Ended

Jan. 31, 2017

Income Tax Disclosure [Abstract]

Summary of Domestic and Foreign Components of Loss Before Provision for Income Taxes

The following table presents the domestic and foreign components of loss before provision for income taxes for the periods presented (in thousands):

	For the year ended
	January 31,
	2017			2016			2015
United States	$	(38,926	)	$	(46,850	)	$	(27,541	)
Foreign		2,167			1,029			342
Loss before provision for income taxes	$	(36,759	)	$	(45,821	)	$	(27,199	)

Summary of Provision for Income Taxes

The provision for income taxes is composed of the following (in thousands):

	For the year ended
	January 31,
	2017			2016		2015
Current income taxes:
Federal	$	—		$	—	$	—
State		82			22		17
Foreign		976			308		80
Total current income taxes		1,058			330		97
Deferred income taxes:
Federal		13			5		4
State		1			—		—
Foreign		(224	)		—		—
Total deferred income taxes		(210	)		5		4
Total provision for income taxes	$	848		$	335	$	101

Summary of Differences Between Effective Tax Rate and Federal Statutory Rate

The effective tax rate differs from the federal statutory rate as follows:

	For the year ended
	January 31,
	2017			2016			2015
Federal statutory income tax rate		34.0	%		34.0	%		34.0	%
State tax, net of federal benefit		2.60			2.70			2.70
Change in valuation allowance		(36.20	)		(32.00	)		(35.40	)
Stock-based compensation		(2.70	)		(6.30	)		(0.40	)
Other non-deductible items		(1.80	)		(0.40	)		(1.06	)
Foreign rate differential		(1.40	)		(0.40	)		(0.24	)
Tax credits		3.20			1.70			—
Total		(2.3	)%		(0.7	)%		(0.4	)%

Summary of Significant Components of Company's Deferred Tax Assets and Liabilities

The following table presents the significant components of the Company’s deferred tax assets and liabilities for the periods presented (in thousands):

	As of January 31,
	2017			2016
Deferred tax assets:
Net operating loss carryforwards	$	49,100		$	38,049
Accruals and reserves		1,164			2,196
Stock-based compensation		3,388			1,256
Tax credits		2,233			1,074
Gross deferred tax assets		55,885			42,575
Valuation allowance		(54,615	)		(41,484	)
Total deferred tax assets, net of valuation    allowance		1,270			1,091
Deferred tax liabilities:
Fixed assets and intangibles assets		(1,072	)		(1,104	)
Gross deferred tax liabilities		(1,072	)		(1,104	)
Net deferred tax assets (liabilities)	$	198		$	(13	)

Summary of Activity Related to Unrecognized Tax Benefits

The following table summarizes the activity related to unrecognized tax benefits (in thousands):

	For the year ended
	January 31,
	2017		2016		2015
Unrecognized tax benefit—beginning of year	$	3,304	$	2,846	$	—
Gross increases —prior year tax positions		224		6		1,351
Gross increases — current year tax    positions		1,913		452		1,495
Unrecognized tax benefit—end of year	$	5,441	$	3,304	$	2,846