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Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jul. 14, 2020 | Nov. 01, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Business Acquisition [Line Items] |  |  |  |
Goodwill |  |  | $ 37,754 | $ 36,947
Bargain purchase gain |  |  | 1,507 | $ 0
Precision Industries, Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, transaction value | $ 31,475 |  |  |
Business combination, Holdback amount | $ (2,500) |  |  |
Date of merger agreement | Jul. 14, 2020 |  |  |
Percentage of issued and outstanding shares | 100.00% |  |  |
Bargain purchase gain | $ 1,507 |  |  |
Lonesome Oak |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, Holdback amount |  | $ (1,450) |  |
Goodwill |  | 807 |  |
Business combination hold back amount due to unrecorded liabilities |  |  | $ 1,297 |
Marquis | Lonesome Oak |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, transaction value |  | 2,000 |  |
Business combination, debt |  | 12,500 |  |
Business combination, Holdback amount |  | $ 1,450 |  |
Business combination, term of employment agreement |  | 5 years |  |
Business combination, term of non competition and non solicitation covenant |  | 3 years |  |

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