Note 11 - Stock-based Compensation (Tables)

12 Months Ended

Sep. 30, 2019

Notes Tables

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Options		Weighted Average Exercise Price		Aggregate Intrinsic Value
Outstanding at September 30, 2018		290,000	$	2.40
Granted		480,000	$	1.32
Exercised		−	$	–
Expired		−	$	–
Forfeited		‒	$	‒
Outstanding at September 30, 2019		770,000	$	1.73	$352,700
Exercisable at September 30, 2019		443,334	$	1.99	$146,400

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]

Exercise Price	Stock Options Outstanding		Exercisable Stock Options Outstanding		Remaining Contractual Life (Years)	Aggregate Intrinsic Value (a)
$1.31		150,000		‒	9.5	$103,500
$1.28		130,000		‒	9.3	93,600
$1.36		200,000		200,000	9.0	128,000
$1.79		50,000		33,334	7.6	10,500
$1.81		90,000		60,000	7.4	17,100
$3.21		100,000		100,000	4.5	‒
$2.45		50,000		50,000	2.5	‒
		770,000		443,334		$352,700

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2019	2017
Estimated fair value of options at grant date	$196,970	$96,690
Black-Scholes model assumptions:
Average expected life (years)	6	6
Average expected volatile factor	29%	35%
Average risk-free interest rate	2.8%	2.4%
Average expected dividend yield	–	–

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	2019		2018		2017
Fiscal year 2012 grant	$	‒	$	‒	$	5,359
Fiscal year 2014 grant		‒		‒		13,575
Fiscal year 2016 grant		‒		1,789		16,221
Fiscal year 2017 grant		18,377		42,135		31,088
Fiscal year 2019 grant		128,415		‒		‒
Total compensation expense	$	146,792	$	43,924	$	66,243

Restricted Stock [Member]

Notes Tables

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	2019		2018		2017
Fiscal year 2014 grants	$	–	$	–	$	4,222
Fiscal year 2016 grants		–		–		43,750
Fiscal year 2017 grant		‒		43,750		61,250
Fiscal year 2018 grant		37,500		67,500		–
Fiscal year 2019 grant		15,000		–		–
Total compensation expense	$	52,500	$	111,250	$	109,222