Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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

Note 13 - Notes Receivable (Details Textual) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Aug. 31, 2022
Financing Receivable, after Allowance for Credit Loss, Total		$ 3,500	$ 3,900
Interest Income, Operating, Total		247	212
Financing Receivable, Allowance for Credit Loss, Ending Balance		260	405
Notes From Non-franchisees [member]
Financing Receivable, after Allowance for Credit Loss, Total				$ 1,600
Interest Income, Operating, Total		$ 0	$ 125
Financing Receivable, Additional Impairment	$ 233
Receivable in Connection With Sale of California Locations [Member]
Financing Receivable, after Allowance for Credit Loss, Total				$ 71
Minimum [Member]
Notes Receivable, Interest Fixed Rate		6.00%
Maximum [Member]
Notes Receivable, Interest Fixed Rate		10.00%