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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2025

Share-Based Payment Arrangement [Abstract]

Summary of Activity Under Stock Option Plan

The following table is a summary of the activity under both the Employee Plan and the Non-Employee Directors’ Plan:

										Wgtd. Avg.
						Wgtd. Avg.				Remaining		Aggregate
						Exercise				Contractual		Intrinsic
		Options				Price				Term		Value
		(Dollars in thousands, except option data)
Three Months Ended March 31, 2025
Outstanding at December 31, 2024			947,921			$	58.42
Options exercised			(21,000	)			36.82
Options canceled, forfeited, or expired			(5,000	)			90.56
Outstanding at March 31, 2025			921,921				58.74			9.55 Yrs.		$	47,140
Exercisable at March 31, 2025			391,046				43.95			7.21 Yrs.		$	25,776

Options Exercised Under Stock Option Plan

The following table has additional information regarding options exercised under both the Employee Plan and the Non-Employee Directors’ Plan:

		Three Months Ended March 31,
		2025				2024
		(Dollars in thousands)
Total intrinsic value of options exercised		$	1,734			$	1,831
Cash received from options exercised			773				708
Tax benefit realized from options exercised			417				440

Stock-based Employee Compensation Expense

The components of stock-based compensation expense for all share-based compensation plans and related tax benefits are as follows:

		Three Months Ended March 31,
		2025				2024
		(Dollars in thousands)
Stock-based compensation expense		$	790			$	715
Tax benefit			190				172
Stock-based compensation expense, net of tax		$	600			$	543

Unearned Stock-based Compensation Expense

		March 31, 2025
		(Dollars in thousands)
Unearned stock-based compensation expense for unvested stock options		$	6,802
Unearned stock-based compensation expense for unvested RSU's			3,480

Summary of Accumulated Stock Units

A summary of the accumulated stock units under the Deferred Stock Compensation Plan is as follows:

		March 31, 2025				December 31, 2024
Accumulated stock units			119,058				120,984
Average price		$	46.51			$	44.70

Summary of Activity Under RSU Plan

The following table is a summary of the activity under the Company's RSU plan.

						Wgtd. Avg.
		Restricted				Grant Date
		Stock Units				Fair Value
Three Months Ended March 31, 2025
Nonvested at December 31, 2024			42,825			$	90.35
Granted			4,000				113.41
Nonvested at March 31, 2025			46,825				92.32

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