Accounting for Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2023

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Recognized and Unrecognized Stock-based Compensation Expense

The total recognized and unrecognized stock-based compensation expense is as follows:

Stock-Based Compensation Expense	2023			2022			2021		Unrecognized Stock-Based Compensation Expense at December 31, 2023		Remaining Weighted Average Vesting Period
RSUs	$	6,216		$	5,551		$	4,594	$	9,124		1.84
PSUs		4,661			954			5,535		9,724		1.97
Restricted Stock		878			888			1,198		437		0.38
SARs		(128	)		(794	)		2,721		—		—
Stock options		—			—			482		—		—
Total Stock-Based Compensation	$	11,627		$	6,599		$	14,530	$	19,285		1.87

Summary of PSU Activity

The following table summarizes PSU activity during the years ended December 31, 2023, 2022 and 2021:

Unvested Performance Stock Units	Relative TSR Target Shares			Weighted-Average Grant Date Fair Value		ROIC Target Shares			Weighted-Average Grant Date Fair Value		Adjusted EBITDA Target Shares			Weighted-Average Grant Date Fair Value		RRG Target Shares			Weighted-Average Grant Date Fair Value		Total
Outstanding at December 31, 2020		157,918		$	56.06		157,916		$	38.58		—		$	—		—		$	—		315,834
Granted		20,626			118.08		40,580			78.98		39,930			79.49		—			—		101,136
Performance Adjustment		30,828			69.18		(30,830	)		44.92		—			—		—			—		(2	)
Vested		(61,656	)		69.18		—			—		—			—		—			—		(61,656	)
Forfeited		(16,148	)		61.10		(17,374	)		44.32		(2,454	)		79.49					—		(35,976	)
Outstanding at December 31, 2021		131,568		$	62.09		150,292		$	47.52		37,476		$	79.49		—		$	—		319,336
Granted		21,324			103.31		42,640			68.63		42,640			68.63		—			—		106,604
Performance Adjustment		45,004			57.46		(2,258	)		41.61		—			—		—			—		42,746
Vested		(90,371	)		57.46		(43,106	)		41.61		—			—		—			—		(133,477	)
Forfeited		(4,724	)		68.67		(6,493	)		56.87		(3,543	)		75.10		—			—		(14,760	)
Outstanding at December 31, 2022		102,801		$	65.20		141,075		$	55.18		76,573		$	73.66		—		$	—		320,449
Granted		30,622			89.87		30,622			59.91		61,255			59.91		30,622			59.91		153,121
Performance Adjustment		—			—		(59,928	)		33.90		—			—		—			—		(59,928	)
Vested		(59,928	)		49.25		—			—		—			—		—			—		(59,928	)
Forfeited		(8,494	)		75.67		(11,618	)		55.94		(7,836	)		70.95		(789	)		59.91		(28,737	)
Outstanding at December 31, 2023		65,001		$	101.15		100,151		$	69.55		129,992		$	67.34		29,833		$	59.91		324,977

Restricted Stock Activity

The following table summarizes restricted stock activity during the years ended December 31, 2023, 2022 and 2021:

Unvested Restricted Stock	Shares			Weighted-Average Grant Date Fair Value
Outstanding at December 31, 2020		34,906		$	39.82
Granted		13,742			70.18
Vested		(37,272	)		41.70
Forfeited		—			—
Outstanding at December 31, 2021		11,376		$	70.33
Granted		13,600			73.54
Vested		(11,376	)		70.33
Forfeited		—			—
Outstanding at December 31, 2022		13,600		$	73.54
Granted		17,923			56.96
Vested		(11,900	)		73.54
Forfeited		(1,700	)		73.54
Outstanding at December 31, 2023		17,923		$	56.96

SARs Activity

The following table summarizes SARs activity during the years ended December 31, 2023, 2022 and 2021:

Stock Appreciation Rights	Shares			Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at December 31, 2020		171,600		$	40.60		2.44	$	4,224
Granted		—			—
Exercised		(116,000	)		40.34
Forfeited		—			—
Outstanding at December 31, 2021		55,600		$	41.15		1.28	$	2,544
Granted		—			—
Exercised		(40,850	)		42.27
Forfeited		—			—
Outstanding at December 31, 2022		14,750		$	38.05		1.15	$	402
Granted		—			—
Exercised		(12,500	)		38.05
Forfeited		—			—
Outstanding at December 31, 2023		2,250		$	38.05		0.15	$	32
Exercisable at December 31, 2023		2,250		$	38.05		0.15	$	32

Summary of Stock Option Activity

The following table summarizes stock option activity during the years ended December 31, 2023, 2022 and 2021:

Options	Shares			Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at December 31, 2020		428,000		$	37.61		3.20	$	11,815
Granted		—			—
Exercised		(215,250	)		38.46
Forfeited		(6,000	)		38.05
Outstanding at December 31, 2021		206,750		$	36.72		2.60	$	10,375
Granted		—			—
Exercised		(44,116	)		37.87
Forfeited		—			—
Outstanding at December 31, 2022		162,634		$	36.41		2.68	$	8,212
Granted		—			—
Exercised		(6,450	)		40.79
Forfeited		(16,500	)		41.59
Outstanding at December 31, 2023		139,684		$	35.59		0.90	$	2,342
Exercisable at December 31, 2023		139,684		$	35.59		0.90	$	2,342

RSU

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Restricted Stock Activity

The following table summarizes RSU activity during the years ended December 31, 2023, 2022 and 2021:

Unvested Restricted Stock Units	Time Vesting Shares			Weighted-Average Grant Date Fair Value
Outstanding at December 31, 2020		208,905		$	37.26
Granted		93,539			79.79
Vested		(88,296	)		38.49
Forfeited		(20,522	)		48.76
Outstanding at December 31, 2021		193,626		$	56.02
Granted		117,507			66.86
Vested		(95,692	)		49.85
Forfeited		(13,863	)		70.52
Outstanding at December 31, 2022		201,578		$	64.27
Granted		136,964			58.68
Vested		(82,695	)		59.43
Forfeited		(23,986	)		59.47
Outstanding at December 31, 2023		231,861		$	63.19