Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Activity in Stock Award Plans

The activity in the Stock Plan is displayed in the following table:

Authorized Shares Available for Future Award Grants	Year Ended December 31, 2021	From Inception to December 31, 2021
Beginning balance	700,680	1,900,000
Additional shares authorized	650,000	2,150,000
Number of awards granted	(161,857)	(3,450,756)
Number of awards forfeited or expired	128,996	718,575
Ending balance	1,317,819	1,317,819
Number of option awards exercised	7,884	1,481,973
Number of unrestricted stock awards granted	—	10,090
Number of restricted stock awards vested	53,483	217,861

The activity in the Director Stock Plan is displayed in the following table:

Authorized Shares Available for Future Award Grants	Year Ended December 31, 2021	From Inception to December 31, 2021
Beginning balance	160,135	300,000
Additional authorization	—	150,000
Number of awards granted	(18,510)	(332,378)
Number of awards forfeited or expired	2,727	26,730
Ending balance	144,352	144,352
Number of option awards exercised	8,181	142,001
Number of restricted stock awards vested	—	98,491

Schedule of Recognition of Stock-Based Compensation Expense

We expect this compensation to be recognized in subsequent years according to the following table, except with respect to awards that are accelerated by the Board of Directors, in which case we will recognize any remaining compensation expense in the period in which the awards are accelerated.

2022	$	2,243
2023	1,291
2024	174
2025	—
2026	—
Total	$	3,708

Schedule of Analysis of Award Activity

The analysis below details the option award activity for 2021 and the awards outstanding at December 31, 2021, for both of our plans and ad hoc options, which were granted prior to the adoption of the other plans:

Options	Shares	Weighted-Average Exercise Price		Weighted-Average Remaining Life (in years)	Aggregate Intrinsic Value
Outstanding at January 1, 2021	893,256	$	37.16
Granted	62,142	29.43
Exercised	(16,065)	22.54
Cancelled/Forfeited	(72,918)	40.06
Expired	(3,727)	20.44
Outstanding at December 31, 2021	862,688	$	36.71	4.46	$	34
Exercisable at December 31, 2021	717,211	$	36.14	3.71	$	34

Schedule of Restricted Stock Award Activity

The analysis below details the award activity for the restricted stock and restricted stock unit awards outstanding at December 31, 2021:

Restricted stock awards	Shares	Weighted-Average Grant Date Fair Value
Non-vested at January 1, 2021	217,883	$	42.45
Granted	118,225	30.05
Vested	(78,211)	37.55
Forfeited	(55,078)	43.14
Non-vested at December 31, 2021	202,819	$	36.92

Schedule of Weighted-average Grant-Date Fair Value Assumptions

The weighted-average grant-date fair value of the options granted under our plans has been estimated using the Black-Scholes option pricing model with the following weighted-average assumptions:

December 31,	2021			2020			2019
Risk-free interest rate	0.98		%	1.4		%	2.57		%
Expected volatility	56.49		%	22.26		%	26.40		%
Expected option life (in years)	7			7			7
Expected dividends (in dollars)	$	0.60		$	1.32		$	1.24
Weighted-average grant-date fair value of options granted during the year (in dollars)	$	13.48		$	6.96		$	12.97

Summary of Stock Options Outstanding and Exercisable

The following table summarizes information regarding the stock options outstanding and exercisable at December 31, 2021:

			Options Outstanding				Options Exercisable
Range of Exercise Prices			Number Outstanding (in shares)	Weighted-Average Remaining Contractual Life (in years)	Weighted-Average Exercise Price		Number Exercisable (in shares)	Weighted-Average Exercise Price
$	20.93	29.28	247,485	2.49	$	27.70	243,921	$	27.71
29.29		37.74	152,089	4.53	29.60		98,295	29.70
37.75		40.61	125,727	3.81	39.91		125,727	39.91
40.62		44.88	189,849	5.03	42.86		177,790	42.96
44.89		54.26	147,538	7.52	48.49		71,478	50.16
$	20.93	54.26	862,688	4.46	$	36.71	717,211	$	36.14