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Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Current deferred tax assets:    
Inventories $ 1,712 $ 1,494
Accrued expenses 1,110 1,269
Current deferred tax assets 2,822 2,763
Valuation allowance (2,822) (2,763)
Net current deferred tax assets 0 0
Long-term deferred tax assets:    
Depreciation and amortization 6,008 8,275
Stock based compensation 3,902 4,216
Tax loss carryforwards 24,418 26,726
Other 374 364
Long-term deferred tax assets 34,702 39,581
Valuation allowance (34,702) (39,581)
Net long-term deferred tax assets $ 0 $ 0