Note 6 - Investments (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Equity Securities without Readily Determinable Fair Value [Table Text Block]

	Cost Basis		Unrealized Gain		Fair Value
December 31, 2019
Alluvial Fund, LP	$	7,042,732	$	3,029,626	$	10,072,358
Mt Melrose, LLC		53,846		—		53,846
Total	$	7,096,578	$	3,029,626	$	10,126,204

	Cost Basis		Unrealized Gain		Fair Value
December 31, 2018
Alluvial Fund, LP	$	7,023,676	$	1,422,812	$	8,446,488
Huckleberry Real Estate Fund II, LLC		468,750		—		468,750
Total	$	7,492,426	$	1,422,812	$	8,915,238