Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes [Abstract]

The reconciliation of continuing operations income tax computed at the Federal statutory tax rate to the provision (benefit) for income taxes

	December 31,
	2012			2011			2010
	As Restated
Tax at statutory rate	$	6,453		$	1,803		$	(8,368	)
State taxes, net of federal benefit		315			296			(1,374	)
Gain (loss) on debt extinguishment		0			(6,255	)		1,135
Change in valuation allowance		(11,761	)		2,928			(3,400	)
Cancellation of debt income		0			642			889
Debt repurchase premium		0			(213	)		0
Gain (loss) on derivative assets and liability		201			354			59
Nondeductible interest expense		0			107			1,172
Share-based compensation expense		266			267			109
Monetized credits		(242	)		(368	)		0
State tax rate adjustment		4,821			0			0
Permanent differences and others		173			71			30
	$	226		$	(368	)	$	(9,748	)

Reconciliation of unrecognized tax benefit

	Years Ended December 31,
	2012			2011		2010
	As Restated
Unrecognized tax benefits—January 1	$	705		$	0	$	0
Gross increases related to current year tax positions		0			705		0
Gross decreases related to current year		(1	)		—		—
Unrecognized tax benefits—December 31	$	704		$	705	$	0

Deferred Tax

	As of December 31,
	2012			2011
				As Restated
Deferred tax assets:
Net operating loss carryforward	$	40,639		$	45,927
Federal and state tax credits		2,168			1,944
Deferred revenue		293			312
Depreciation and amortization		9,785			14,162
Allowance and accrued liabilities		1,162			1,389
Share-based compensation expense		351			445
Capitalized research and development		1,978			3,958
Total deferred tax assets		56,376			68,137
Valuation allowance		(48,258	)		(60,019	)
Net deferred tax assets	$	8,118		$	8,118
Deferred tax liabilities:
Cancellation of debt	$	8,118		$	8,118
Total deferred tax liabilities		8,118			8,118
Net deferred tax assets	$	—		$	—