Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Summary of Unrecognized Tax Benefits

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

	December 31,
	2014		2013
Beginning balance of unrecognized tax benefits	$	899	$	714
Gross increases based on tax positions related to current year	120		185
Gross increases based on tax positions related to prior year	—		—
Settlements with taxing authorities	—		—
Expiration of statute of limitations	—		—
Ending balance of unrecognized tax benefits	$	1,019	$	899

Reconciliation of Income Tax to Expense (Benefit)

The reconciliation of income tax computed at the Federal statutory tax rate to the expense for income taxes is as follows (in thousands):

	December 31,
	2014			2013			2012
Tax at statutory rate	$	2,941		$	(27,491	)	$	(16,109	)
State taxes, net of federal benefit	(489		)	(1,821		)	(1,580		)
Change in valuation allowance	7,013			22,602			21,990
Permanent interest disallowed	(8,608		)	7,197			(4,466		)
Other permanent differences	1,226			1,279			1,360
Research and development tax credits	(1,387		)	(744		)	(2,352		)
State tax rate benefit	(503		)	(822		)	842
Other	(109		)	(200		)	320
	$	84		$	—		$	5

Schedule of Deferred Tax Assets

The components of the deferred tax assets are as follows (in thousands):

	December 31,
	2014			2013
Deferred tax assets:
Net operating losses	$	82,054		$	80,388
Capitalized research and development	7,176			8,172
Accrued expenses	2,030			3,263
Research and development credits	3,395			2,010
Accrued product returns	1,772			2,029
Inventory reserve and UNICAP	2,956			660
Amortization	2,556			2,861
Deferred revenue	4,446			—
Other, net	5,128			4,736
Total deferred tax assets	111,513			104,119
Less valuation allowance	(110,338		)	(102,949		)
Net deferred tax assets	1,175			1,170
Deferred tax liabilities:
Depreciation	(1,175		)	(1,170		)
IPR&D	(20,500		)	—
Total deferred tax liabilities	(21,675		)	(1,170		)
Net deferred tax liability	$	(20,500	)	$	—