Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2022

Stock-Based Compensation [Abstract]

Summary of recognized stock-based compensation expense

The following table summarizes share-based compensation expense recognized:

	Years ended December 31,
	2022		2021		2020
Restricted stock units	$	6,323	$	6,396	$	5,061
Phantom stock units		222		209		215
Total	$	6,545	$	6,605	$	5,276

Summary of unrecognized compensation cost and weighted average remaining amortization periods

The following table summarizes unrecognized compensation cost and the weighted average remaining amortization periods at December 31, 2022 (amortization periods in years):

	Unrecognized Compensation Cost		Weighted Average Remaining Amortization Periods
Restricted stock units	$	3,241		0.7
Phantom stock units		-		0.0
Total	$	3,241

Restricted stock units activity

RSU activity is presented below (number of RSUs in thousands):

	Years ended December 31,
	2022						2021						2020
	Number of RSUs			Weighted Average Grant-date Fair Value			Number of RSUs			Weighted Average Grant-date Fair Value			Number of RSUs			Weighted Average Grant-date Fair Value
Outstanding:
Beginning of year		877			$	20.08		793			$	18.90		842			$	17.93
Granted		336				19.13		319				22.07		272				18.30
Vested*		(306	)			20.04		(235	)			18.79		(308	)			15.70
Cancelled or forfeited		(13	)			20.50		-				-		(13	)			19.06
End of year		894			$	19.73		877			$	20.08		793			$	18.90
Expected to vest		894						877						793

* The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy statutory tax withholding requirements.

RSUs with performance-based vesting criteria

The number of performance-based RSUs scheduled to vest increases ratably based on the achievement of defined performance criteria between the established target and maximum levels.  RSUs with performance-based vesting criteria are expected to vest as follows (number of RSUs in thousands):

Vesting Date	Expected to Vest		Not Expected to Vest		Total
January 1, 2023**		152		-		152
January 1, 2024		165		-		165
January 1, 2025		168		-		168

** The performance vesting criteria for the performance-based RSUs with a vesting date of January 1, 2023 were achieved.

Phantom stock units activity under the 2007 Program

The following table summarizes the Company’s phantom stock units activity (number of phantom stock units in thousands):

	Years ended December 31,
	2022				2021				2020
	Number of Phantom Stock Units		Grant-date Fair Value per Unit		Number of Phantom Stock Units		Grant-date Fair Value per Unit		Number of Phantom Stock Units		Grant-date Fair Value per Unit
Outstanding:
Beginning of year		212				198				183
Granted		10	$	22.20		10	$	20.89		10	$	21.49
Dividend equivalents issued		4				4				5
End of year		226				212				198