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Commitments and Contingencies - Narrative (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Mar. 29, 2021 USD ($) | Dec. 31, 2020 USD ($) | Jun. 30, 2021 USD ($) press | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) press | Jun. 30, 2020 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |
Insurance proceeds received |  |  |  |  | $ 4,101 | $ 6,183
Proceeds from loss contingency receivable |  |  |  |  | 4,646 |
Gain on insurance proceeds received |  |  | $ 0 | $ 1,683 | 2,495 | 2,683
Recoverable amounts of business interruption expenses |  |  |  |  | 546 |
Quality Aluminum Forge, LLC Manufacturing Facility Fire |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Insurance proceeds received |  | $ 3,148 |  |  |  |
Proceeds from loss contingency receivable |  |  |  |  | 4,646 |
Gain on insurance proceeds received |  |  |  |  | 2,495 | 2,683
Recoverable amounts of business interruption expenses |  |  |  |  | 546 |
Quality Aluminum Forge, LLC Manufacturing Facility Fire | Income (loss) before income tax (benefit) expense |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Gain on insurance proceeds received |  |  |  |  | $ 3,099 | $ 5,286
Quality Aluminum Forge, LLC Manufacturing Facility Fire | Damage from Fire, Explosion or Other Hazard |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of presses to be restored | press |  |  | 2 |  | 2 |
Number of presses damaged | press |  |  | 6 |  | 6 |
Class Action Suit in Superior Court of California, Orange County - Violation of Wage-and-hour Laws |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency paid | $ 315 |  |  |  |  |

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