Note 4 - Stock-based Compensation (Tables)

9 Months Ended

Jun. 30, 2018

Notes Tables

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

	Nine months ended June 30, 2018
Dividend yield	0%
Average expected volatility	45.63%
Average risk-free interest rate	2.61%
Expected life (years)	4
Vesting period (years)	3

Share-based Compensation, Stock Options, Activity [Table Text Block]

	Number of options			Weighted average exercise price
Outstanding at September 30, 2017		38,950		$	2.79
Granted		72,000			13.35
Exercised		(7,350	)		3.67
Cancelled or Forfeited		-			-
Outstanding at June 30, 2018		103,600		$	10.06

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

	Number of shares			Weighted average grant date fair value
Unvested shares at September 30, 2017		370,530		$	15.24
Granted		7,235			14.17
Vested		(85,933	)		17.39
Forfeited		(12,284	)		15.54
Unvested at June 30, 2018		279,548		$	14.54