Note 5 - Fair Value Measurements (Tables)

3 Months Ended

Dec. 31, 2018

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	December 31. 2018
			Unrealized			Fair		Cash		Short-term		Long-term
	Cost Basis		Losses			Value		Equivalents		Securities		Securities
Level 1:
Money Market Funds	$	538,922	$	(69	)	$	538,853	$	538,853	$	-	$	-
Level 2:
Certificates of deposit		499,000		-			499,000		-		-		499,000
Municipal securities		286,070		(277	)		285,793		-		285,793
Corporate bonds		3,908,040		(9,211	)		3,898,829		-		3,498,070		400,759
Subtotal		4,693,110		(9,488	)		4,683,622		-		3,783,863		899,759
Total	$	5,232,032	$	(9,557	)	$	5,222,475	$	538,853	$	3,783,863	$	899,759

	September 30, 2018
			Unrealized			Fair		Cash		Short-term		Long-term
	Cost Basis		Losses			Value		Equivalents		Securities		Securities
Level 1:
Money Market Funds	$	410,393	$	-		$	410,393	$	410,393	$	-	$	-
Level 2:
Certificates of deposit		499,000		-			499,000		-		-		499,000
Municipal securities		-		-			-		-		-		-
Corporate bonds		4,302,661		(8,945	)		4,293,716		-		3,592,175		701,541
Subtotal		4,801,661		(8,945	)		4,792,716		-		3,592,175		1,200,541
Total	$	5,212,054	$	(8,945	)	$	5,203,109	$	410,393	$	3,592,175	$	1,200,541