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Selected Balance Sheet Data (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Sep. 30, 2013
--- | --- | ---
Accounts receivable, net: |  |
Accounts receivable | $ 26,010 | $ 27,142
Less allowance for doubtful accounts | 110 | 313
Accounts receivable, net | 25,900 | 26,829
Inventories: |  |
Raw materials | 25,177 | 21,171
Work in process | 203 | 224
Finished goods | 5,212 | 4,745
Inventories | $ 30,592 | $ 26,140

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