Note 15 - Subsequent Events (Details Textual) - Forecast [Member] - USD ($)	1 Months Ended
	Jul. 31, 2025	Feb. 28, 2025	Oct. 31, 2024
A9101 L B J Freeway [Member]
Disposal Group, Including Discontinued Operation, Consideration			$ 5,753,000
Proceeds from Sale of Real Estate			5,100,000
Interstate10 Warehouse [Member]
Disposal Group, Including Discontinued Operation, Consideration			8,400,000
Proceeds from Sale of Real Estate			$ 8,100,000
Corporate Park Woodland I I [Member]
Disposal Group, Including Discontinued Operation, Consideration		$ 1,650,000
Proceeds from Sale of Real Estate		$ 1,560,000
Uptown Tower [Member]
Disposal Group, Including Discontinued Operation, Consideration	$ 20,000,000
Proceeds from Sale of Real Estate	17,300,000
Corporate Park Northwest [Member]
Disposal Group, Including Discontinued Operation, Consideration	8,500,000
Proceeds from Sale of Real Estate	7,800,000
Holly Hall Industrial Park [Member]
Disposal Group, Including Discontinued Operation, Consideration	7,650,000
Proceeds from Sale of Real Estate	7,200,000
Holly Knight [Member]
Disposal Group, Including Discontinued Operation, Consideration	4,750,000
Proceeds from Sale of Real Estate	4,500,000
Westgate Service Center [Member]
Disposal Group, Including Discontinued Operation, Consideration	9,100,000
Proceeds from Sale of Real Estate	$ 8,600,000