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Retirement Plans (Tables)
 12 Months Ended
Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract]  
Aggregate Amounts of Contributions to the 401(k) and ESOP Plans The aggregate amounts of contributions by the Company to the 401(k) and ESOP are shown in the following table:

 

 

 

December 31,

 

 

 

2020

 

 

2019

 

 

2018

 

 

 

(Dollars in thousands)

 

401(k) contributions

 

$

2,986

 

 

$

2,526

 

 

$

2,465

 

ESOP contributions

 

 

3,689

 

 

 

4,403

 

 

 

4,073

 

Total contributions

 

$

6,675

 

 

$

6,929

 

 

$

6,538