Income Taxes (Tables)

12 Months Ended

Jan. 31, 2013

Income Taxes

Schedule of components of income (loss) before income tax expense

Loss before income tax expense consists of the following for the periods shown below (in thousands):

	Fiscal Year Ended January 31,
	2013			2012			2011
United States	$	(37,613	)	$	(11,318	)	$	(3,681	)
International		1,645			504			—
Total	$	(35,968	)	$	(10,814	)	$	(3,681	)

Schedule of components of income tax expense

Income tax expense consists of the following for the periods shown below (in thousands):

	Fiscal Year Ended January 31,
	2013			2012		2011
Current tax provision:
Federal	$	—		$	—	$	—
State		50			5		6
Foreign		944			173		119
Total current tax provision		994			178		125
Deferred tax provision:
Federal		—			—		—
State		—			—		—
Foreign		(281	)		—		—
Total deferred tax provision		(281	)		—		—
Total tax provision	$	713		$	178	$	125

Schedule of reconciliation of federal statutory income tax provision to effective income tax provision

The reconciliation of federal statutory income tax rate to our effective income tax rate is as follows (in thousands):

	Fiscal Year Ended January 31,
	2013			2012			2011
Expected provision at United States federal statutory rate	$	(12,229	)	$	(3,677	)	$	(1,252	)
State income taxes—net of federal benefit		(375	)		(631	)		(215	)
Stock options		4,452			1,064			358
Preferred stock warrant		—			810			—
Research and development tax credits		(2,725	)		(440	)		(466	)
Tax reserve for uncertain tax positions		25			99			118
Change in valuation allowance		11,205			2,707			1,545
Other		360			246			37
Total tax provision	$	713		$	178		$	125

Schedule of components of deferred tax assets and liabilities

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

	Fiscal Year Ended January 31,
	2013			2012
Deferred tax assets:
Net operating loss carryforwards	$	14,238		$	12,658
Accrued liabilities		5,682			5,429
Tax credit carryforwards		5,695			1,984
Intangible assets		—			163
Deferred Revenue		5,270			—
Valuation allowance		(29,154	)		(19,383	)
Total deferred tax assets		1,731			851
Deferred tax liabilities:
Depreciation and amortization		(1,450	)		(851	)
Total deferred tax liabilities		(1,450	)		(851	)
Net deferred taxes		281			—
Recorded as:
Current deferred tax assets		2,886			2,750
Current valuation allowance		(2,572	)		(2,750	)
Non-current deferred tax assets		26,548			16,633
Non-current valuation allowance		(26,581	)		(16,633	)
Net deferred tax assets	$	281		$	—

Schedule of net operating loss and tax credit carry forwards

Net operating loss and tax credit carry forwards as of January 31, 2013 are as follows (in thousands):

	Amount		Expiration years
Net operating loss, federal	$	154,915		2025 - 2033
Net operating loss, state		154,893		2016 - 2033
Tax credit, federal		4,940		2026 - 2033
Tax credit, state		3,948		N/A

Schedule of unrecognized tax positions

	Fiscal Year Ended January 31,
(in thousands)	2013			2012		2011
Balance at beginning of year	$	1,056		$	817	$	442
Increase related to prior year tax positions		—			—		—
Decrease related to prior year tax positions		(13	)		—		—
Increase related to current year tax positions		1,062			239		375
Settlements with tax authorities		—			—		—
Decrease related to lapse of statue of limitations		—			—		—
Balance at end of year	$	2,105		$	1,056	$	817