Note 3 - Cash, Cash Equivalents and Investments (Tables)

9 Months Ended

Jun. 30, 2017

Notes Tables

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30, 2017		September 30, 2016
Less than one year	$	5,737,150	$	5,527,075
1-5 years		17,153,000		10,703,000
Total	$	22,890,150	$	16,230,075