Note 4 - Mortgage Loan Receivable (Details Textual) - USD ($)	Oct. 29, 2021	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, after Allowance for Credit Loss, Total		$ 30,000,000	$ 30,000,000
Interest Reserve		1,225,000	$ 2,144,000
Mortgage Receivable [Member] \| HDAI [Member]
Financing Receivable, after Allowance for Credit Loss, Total	$ 30,000,000	30,000,000
Notes Receivable, Term (Month)	9 months
Notes Receivable, Interest Rate	12.25%
Sale Leaseback Term (Year)	20 years
Interest Reserve	$ 2,756,250	$ 1,200,000

Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

Name:	us-gaap_NotesReceivableNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant