Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

ncome before taxes for domestic and foreign operations consisted of the following:

	Year ended December 31,
	2012			2011
Domestic	$	42,990		$	10,318
Foreign	(435		)	278
Total	$	42,555		$	10,596

Schedule of Components of Income Tax Expense (Benefit)

The Company's (provision) for income taxes consisted of the following:

	Year ended December 31,
	2012			2011
Current:
Federal	$	(16,910	)	$	(2,106	)
State	(381		)	(99		)
Foreign	(74		)	(46		)
Total current	(17,365		)	(2,251		)
Deferred:
Federal	455			(1,271		)
State	46			(23		)
Foreign	160			—
	661			(1,294		)
Change in valuation allowance	796			(122		)
Total deferred	1,457			(1,416		)
(Provision) for income taxes	$	(15,908	)	$	(3,667	)

Schedule of Effective Income Tax Rate Reconciliation

	Year ended December 31,
	2012			2011
Tax (provision) at Federal statutory rate	$	(14,894	)	$	(3,603	)
State income tax (provision), net of federal benefit	(1,476		)	(162		)
Research and development tax credits	357			316
Foreign earnings or losses taxed at different rates	(136		)	48
Other	(555		)	(266		)
Change in valuation allowance	796			—
Tax (provision)	$	(15,908	)	$	(3,667	)

Schedule of Deferred Tax Assets and Liabilities

	As of December 31, 2012						As of December 31, 2011
	Current			Long-term			Current		Long-term
Deferred revenue	$	856		$	—		$	860	$	—
Basis difference in intangible assets	—			159			—		(580		)
Inventory reserve	1,871			—			1,598		—
Net operating loss carryforwards	—			667			—		364
Research and development tax credits	—			248			—		1,033
Accrued expenses	140			—			182		—
Stock-based compensation	—			684			—		742
Allowance for sales returns and doubtful accounts	20			—			56		—
Difference in property and equipment basis	—			(475		)	—		(646		)
Other	462			(19		)	291		52
Total net deferred income tax asset	3,349			1,264			2,987		965
Less: Valuation allowance	(201		)	(69		)	—		(1,066		)
Net deferred income tax asset (liability)	$	3,148		$	1,195		$	2,987	$	(101	)

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax positions is as follows:

	Year ended December 31,
	2012			2011
Balance - beginning of year	$	523		$	404
Additions based on tax positions related to the current year	795			229
Additions for tax positions of prior years	1,082			—
Reductions for tax positions of prior years	—			(88		)
Settlements	—			—
Lapse in statutes of limitations	(16		)	(22		)
Unrecognized tax benefits, ending balance	$	2,384		$	523