Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Long-term Promissory Note (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Jul. 31, 2003
Extinguishment of Debt [Line Items]
Operating lease right-of-use asset	$ 3,123	$ 6,233
City of Milwaukee, Wisconsin variable rate Industrial Development Bonds
Extinguishment of Debt [Line Items]
Aggregate principal amount			$ 4,275
Hangar
Extinguishment of Debt [Line Items]
Operating lease right-of-use asset	$ 1,852	$ 2,084