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