Financing Arrangements - Narrative (Details) ft² in Thousands	Oct. 16, 2024 USD ($) shares	Sep. 12, 2024 USD ($)	Aug. 29, 2024 USD ($) a ft² subsidiary loan	May 30, 2024 USD ($)	Dec. 31, 2024	Aug. 26, 2024	Feb. 26, 2024 USD ($)	May 05, 2021
Debt Instrument [Line Items]
Area of land | a			4.626
Area of property | ft²			13
New Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Minimum debt service coverage ratio			1.25
Maximum debt service leverage ratio			3.00
New Credit Agreement | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate (as a percentage)			2.00%
Number of subsidiaries | subsidiary			12
Credit facility maximum borrowing capacity			$ 14,000,000
Interest rate stated percentage (as a percentage)			5.00%
New Credit Agreement, Letter of Credit | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			$ 3,000,000
Term Note A - Alerus | Unsecured debt | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, term			7 years
Basis spread on variable rate (as a percentage)			2.00%
Interest rate stated percentage (as a percentage)			5.00%
Number of secured term loans (in loans) | loan			2
Principal amount			$ 10,700,000
Payments due at maturity			$ 3,200,000
Term Note B - Alerus | Unsecured debt | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, term			25 years
Basis spread on variable rate (as a percentage)			2.00%
Interest rate stated percentage (as a percentage)			5.00%
Principal amount			$ 2,300,000
Payments due at maturity			$ 1,800,000
First Loan Year | Secured Debt
Debt Instrument [Line Items]
Prepayment premium (as a percent)			3.00%
Second and Third Loan Years | Secured Debt
Debt Instrument [Line Items]
Interest rate, effective percentage (as a percentage)			2.00%
Fourth and Fifth Loan Years | Secured Debt
Debt Instrument [Line Items]
Interest rate, effective percentage (as a percentage)			1.00%
Term Note J | Secured, subordinated promissory note
Debt Instrument [Line Items]
Basis spread on variable rate (as a percentage)		3.86%
Principal amount		$ 10,000,000.0
Debt instrument default amount		$ 15,000,000
Quarterly cash flow coverage ratio		1.25
Repayments of debt		$ 4,600,000
Promissory Notes - Honeywell | Notes payable | AAM 24-1 Debt
Debt Instrument [Line Items]
Interest rate stated percentage (as a percentage)					8.50%		8.50%
Principal amount							$ 15,000,000
Second Note Purchase Agreement | AAM 24-1 Debt
Debt Instrument [Line Items]
Shares issued (in shares) | shares	160,000
Second Note Purchase Agreement | Senior Notes | AAM 24-1 Debt
Debt Instrument [Line Items]
Interest rate stated percentage (as a percentage)	8.50%
Principal amount	$ 30,000,000
CAM
Debt Instrument [Line Items]
Ownership percentage (as a percentage)				21.00%		95.00%		90.00%
OCAS, Inc, | CAM
Debt Instrument [Line Items]
Ownership interest sold (as a percentage)				16.00%
Purchase price of redeemed interest				$ 4,600,000
Debt instrument, term				3 years
Bond yield period				10 years
OCAS, Inc, | CAM | OCAS Loan | Secured, subordinated promissory note
Debt Instrument [Line Items]
Interest payment period				12 months
Bond yield period				10 years
Basis spread on variable rate (as a percentage)				3.75%