Income Taxes - Deferred tax assets (liabilities) (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets
Accrued expenses	$ 57,000	$ 117,000
Stock-based awards		9,000
Reserve for bad debts		2,000
Net operating loss and credit carryforwards	1,968,000	529,000
Right of use liability	8,458,000
Other	665,000	2,000
Total deferred tax assets	11,148,000	659,000
Deferred tax liabilities
Depreciation	(2,207,000)	(5,000)
Accrued expenses	(1,530,000)
Intangible assets	(6,581,000)
Right of use asset	(8,321,000)
Prepaid expenses		(9,000)
Other	(7,000)
Total deferred tax liabilities	(18,646,000)	(14,000)
Net deferred tax liabilities	(7,498,000)	645,000
Valuation allowance	(144,000)	$ (645,000)
Net deferred tax liabilities after valuation allowance	$ (7,642,000)