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

9 Months Ended

Jun. 30, 2018

Notes Tables

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30, 2018		September 30, 2017
Less than one year	$	8,486,225	$	5,937,150
1-5 years		18,226,000		19,816,000
Total	$	26,712,225	$	25,753,150