Summary of Significant Accounting Policies - Additional Information (Details)				3 Months Ended	12 Months Ended
	Oct. 01, 2024 USD ($)	Oct. 01, 2023 USD ($)	Oct. 01, 2022 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 22, 2020
Summary Of Significant Accounting Policies [Line Items]
Inventory valuation reserves				$ 9,400,000	$ 9,400,000	$ 7,600,000
Provision for federal income taxes					$ (2,100,000)	$ (5,200,000)	$ (700,000)
Goodwill impairment	$ 0	$ 0	$ 0
Impairment associated with our long-lived assets (excluding goodwill)				$ 0
10% Series A Cumulative Perpetual Preferred Stock
Summary Of Significant Accounting Policies [Line Items]
Depositary receipt ratio				0.001	0.001	0.001		0.001	0.001	0.001
Minimum
Summary Of Significant Accounting Policies [Line Items]
Revenue from guaranteed maintenance contracts					3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Revenue from guaranteed maintenance contracts					5 years