Income and other Taxes Income Taxes (Tables)

12 Months Ended

Sep. 30, 2013

Income Tax Disclosure [Abstract]

Schedule of components of income tax expense (benefit)

A reconciliation of the provision for income taxes, with the amount computed by applying the statutory U.S. federal and state income tax rates to income before provision for income taxes is as follows:

Provision for Income Taxes (in thousands)	For the Fiscal Year Ended September 30,
	2013			2012			2011
Income tax expense (benefit) computed at U.S. federal statutory rate	$	1.7		$	(12.8	)	$	(11.6	)
State tax benefits, net of U.S. federal effect	0.4			(1.4		)	(1.1		)
Foreign	—			1.6			—
Other	1.3			0.7			1.3
Valuation allowance	(3.3		)	13.5			11.4
Income tax expense - current	$	0.1		$	1.6		$	—
Effective tax rate	2		%	4		%	—		%

Schedule of deferred tax assets and liabilities

Significant components of our deferred tax assets are as follows:

Deferred Tax Assets	As of September 30, 2013			As of September 30, 2012
(in thousands)
Deferred tax assets:
Federal net operating loss carryforwards	$	166,834		$	158,875
Foreign net operating loss carryforwards	4,052			3,593
Income tax credit carryforwards	2,641			2,773
Inventory reserves	3,743			5,891
Accounts receivable reserves	1,275			1,243
Accrued warranty reserve	799			1,053
State net operating loss carryforwards	14,289			15,984
Investment write-down	5,315			5,315
Legal reserves	—			267
Stock compensation	3,325			3,201
Deferred compensation	1,466			1,309
Fixed assets and intangibles	12,681			15,639
Other	1,320			7,199
Total deferred tax assets	217,740			222,342
Valuation allowance	(217,740		)	(222,342		)
Net deferred tax assets	$	—		$	—

Schedule of unrecognized tax benefits roll forward

A reconciliation of the beginning and ending amount of unrecognized gross tax benefits is as follows:

Unrecognized Gross Tax Benefit (in thousands)
Balance as of September 30, 2011	$	338
Adjustments based on tax positions related to the current year	—
Adjustments based on tax positions of prior years	282
Balance as of September 30, 2012	620
Adjustments based on tax positions related to the current year	—
Adjustments based on tax positions of prior years	—
Balance as of September 30, 2013	$	620