Note 5 - Common Stock Investment (Tables)

3 Months Ended

Mar. 31, 2022

Common Stock [Member]

Notes Tables

Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]

	Investment		Shares				Fair Value
Investment	Date	Property Type	March 31, 2022		December 31, 2021		March 31, 2022		December 31, 2021
Common Stock
NexPoint Storage Partners	11/6/2020	Self-storage		41,963		41,963	$	58,789	$	58,460