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Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Sep. 30, 2012
Current deferred tax assets:    
Inventories $ 1,494 $ 1,644
Accrued expenses 1,269 651
Current deferred tax assets 2,763 2,295
Valuation allowance (2,763) (2,295)
Net current deferred tax assets      
Long-term deferred tax assets:    
Depreciation and amortization 8,275 11,945
Stock based compensation 4,216 4,177
FIN 48 deferred tax asset 70 482
Tax loss carryforwards 26,726 29,196
Other 294 182
Long-term deferred tax assets 39,581 45,982
Valuation allowance (39,581) (45,982)
Net long-term deferred tax assets