Note 6 - Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

	Carrying		Fair
Description	Amount		Value		Level 1		Level 2		Level 3
December 31, 2018
Note receivable	$	1,405,112	$	1,529,000		-	$	1,529,000		-
Marketable securities		339,000		339,000	$	339,000		-		-
December 31, 2017
Long-term debt	$	3,045,421	$	3,045,421		-	$	3,045,421		-
Note receivable		1,521,005		1,684,000		-		1,684,000		-
Marketable securities		330,000		330,000	$	330,000		-		-