Stock-Based Compensation (Tables)

6 Months Ended

Mar. 31, 2023

Stock-Based Compensation

Summary of activity under the restricted stock plan

		Weighted
		Average Fair
	Number of	Value At
	Shares	Grant Date
Unvested at September 30, 2022	96,536	$	33.23
Granted	29,059	$	49.19
Forfeited / Canceled	—	$	0.00
Vested	(35,692)	$	37.06
Unvested at March 31, 2023	89,903	$	36.87
Expected to vest	89,903	$	36.87

Summary of activity under the deferred restricted stock plan

		Weighted
		Average Fair
	Number of	Value At
	Shares	Grant Date
Unvested and deferred at September 30, 2022	3,801	$	44.07
Granted	8,974	$	49.19
Vested and deferred	(3,801)	$	44.07
Unvested and deferred at March 31, 2023	8,974	$	49.19
Vested and deferred at March 31, 2023	21,351	$	31.32

Summary of activity under the 2016 Incentive Compensation Plan with respect to performance shares

		Weighted
		Average Fair
	Number of	Value At
	Shares	Grant Date
Unvested at September 30, 2022	76,420	$	41.37
Granted	19,555	$	69.39
Vested	(25,226)	$	42.83
Forfeited / Canceled	—	$	0.00
Unvested at March 31, 2023	70,749	$	48.60

Schedule of fair value assumptions used for grants under the stock option plan

	Fair		Dividend		Risk-free		Expected		Expected
Grant Date	Value		Yield		Interest Rate		Volatility		Life
February 7, 2023	$	22.70	1.65	%	3.81	%	51	%	5	years
November 22, 2022	$	20.52	1.80	%	3.97	%	51	%	5	years

Summary of activity under the stock option plans

						Weighted
		Aggregate		Weighted		Average
		Intrinsic		Average		Remaining
	Number of	Value		Exercise		Contractual
	Shares	(000s)		Prices		Life
Outstanding at September 30, 2022	697,220			$	34.75
Granted	32,235			$	49.01
Exercised	(218,576)			$	37.90
Surrendered	(13,081)			$	47.96
Outstanding at March 31, 2023	497,798	$	8,045	$	33.94	6.75	yrs.
Vested or expected to vest	478,599	$	7,684	$	34.04	6.69	yrs.
Exercisable at March 31, 2023	399,672	$	6,739	$	33.23	6.30	yrs.