Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2020

Retirement Benefits [Abstract]

Summary of the stock option activities in the Plans

Below is a summary of the stock option activity in the Plans for the year ended December 31, 2020:

	2020
	Number of Stock Options Outstanding	Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term	Aggregate Intrinsic value
				(in years)	(Dollars in thousands)
Outstanding at January 1, 2020	453,104	$	16.26
Granted	9,538	22.22
Exercised	(139,739)	19.94
Forfeited and expired	(13,588)	20.85
Outstanding at December 31, 2020	309,315	$	16.84	3.87	$	4,480
Vested and exercisable at December 31, 2020	309,315	$	16.84	3.87	$	4,480

Schedule of Other Share-based Compensation, Activity

Below is a summary of the activity for restricted stock and restricted stock units in the Plans for the years ended December 31, 2020:

	2020
	Shares	Weighted Average Grant-Date Fair Value Per Share
Unvested at the beginning of the year	739,933	$	35.11
Granted	782,450	20.02
Vested	(182,497)	33.78
Forfeited	(70,642)	28.85
Unvested at the end of the year	1,269,244	$	26.35