Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Summary of Information with Respect to Stock-based Compensation

A summary of information with respect to stock-based compensation is as follows:

	December 31,
	2020		2019		2018
Salaries and employee benefits (1)	$	12,968	$	12,857	$	9,548
General and administrative expenses	460		460		562
Income tax benefit related to stock-based compensation included in net income	3,571		3,529		2,674

Restricted Stock Unit Activity

Restricted stock unit activity for the years ended December 31, 2020, 2019 and 2018 is as follows:

	Number of Restricted Stock Units	Weighted- Average Grant-date Fair Value
Outstanding on December 31, 2018	512,446	$	28.83
Granted	270,488	33.55
Vested and converted to common stock	(175,792)	24.19
Forfeited	(8,154)	34.29
Outstanding on December 31, 2019	598,988	32.25
Granted	329,068	22.20
Vested and converted to common stock	(194,921)	29.67
Forfeited	(25,271)	30.62
Outstanding on December 31, 2020	707,864	$	28.35

Performance Stock Unit Activity

Performance share unit activity for the years ended December 31, 2020, 2019 and 2018 is as follows:

	Number of Performance Stock Units	Weighted- Average Grant-date Fair Value
Outstanding on December 31, 2018	197,117	$	24.88
Granted	81,661	35.58
Vested and converted to common stock	(99,219)	25.04
Forfeited	—	—
Outstanding on December 31, 2019	179,559	32.63
Granted	105,847	23.52
Vested and converted to common stock	(50,472)	26.69
Forfeited	—	—
Outstanding on December 31, 2020	234,934	$	29.80