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Selected Balance Sheet Data (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Sep. 30, 2017
--- | --- | ---
Accounts receivable, net: |  |
Accounts receivable | $ 42,778 | $ 31,365
Less allowance for doubtful accounts | 566 | 341
Less reserve for future returns and pricing adjustments | 2,423 | 2,169
Accounts receivable, net | 39,789 | 28,855
Inventories: |  |
Raw materials | 24,804 | 24,050
Work in process | 634 | 484
Finished goods | 14,232 | 5,704
Inventories | $ 39,670 | $ 30,238

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