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Selected Balance Sheet Data (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Sep. 30, 2018 | [1]
--- | --- | --- | ---
Accounts receivable, net: |  |
Accounts receivable | $ 49,698 | $ 52,792
Less allowance for doubtful accounts | 797 | 413
Less reserve for future returns and pricing adjustments | 2,530 | 2,560
Accounts receivable, net | 46,371 | 49,819
Inventories: |  |
Raw materials | 19,427 | 22,047
Work in process | 807 | 525
Finished goods | 26,802 | 19,072
Inventories | $ 47,036 | $ 41,644
[1] | Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” which we adopted on October 1, 2018.

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