Employee Benefits (Tables)

12 Months Ended

Sep. 30, 2022

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule Of Share Based Payment Award Stock Options Valuation Assumptions

We have elected to use the Black-Scholes option pricing model to determine grant-date fair value for stock options, with the following assumptions: (i) expected share price volatility based on the average of Meridian’s historical volatility over the options’ expected lives and implied volatility based on the value of tradable call options; (ii) expected life of options based on contractual lives, employees’ historical exercise behavior and employees’ historical post-vesting employment termination behavior; (iii) risk-free interest rates based on treasury rates that correspond to the expected lives of the options; and (iv) dividend yield based on the expected yield on underlying Meridian common stock. A summary of these key assumptions are as follows:

Year ended September 30,	2022		2021			2020
Share price volatility		51%-59%		53%-59	%		34	%
Life of option		4.00-7.06 yrs.		4.00-7.47 yrs.			6.51 yrs.
Risk-free interest rates		0.95%-1.73%		0.26%-0.79	%		1.60	%
Dividend yield		0%		0	%		0	%

Summary of Stock Option Plans

A summary of the status of our stock option plans as of September 30, 2022, and changes during the year ended September 30, 2022, is presented in the table and narrative below:

	Options			Wtd Avg Exercise Price		Wtd Avg Remaining Life (Yrs)		Aggregate Intrinsic Value
Outstanding beginning of period		1,001		$	15.31
Grants		163			19.52
Exercises		(186	)		13.27
Forfeitures		—			—
Cancellations		(9	)		20.26
Outstanding end of period		969		$	16.55		6.19	$	14,515
Exercisable end of period		612		$	16.62		4.97	$	9,124

Summary of Nonvested Options

A summary of the status of our nonvested options as of September 30, 2022, and changes during the year ended September 30, 2022, is presented below:

	Options			Weighted- Average Grant Date Fair Value
Nonvested beginning of period		403		$	5.70
Granted		163			9.26
Vested		(209	)		5.73
Forfeitures		—			—
Nonvested end of period		357		$	7.30