Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Plan Changes in Fair Value of Plan Assets and Funded Status (Details)

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Employee Benefit Plans - Plan Changes in Fair Value of Plan Assets and Funded Status (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Change in projected benefits obligation:      
Projected benefit obligation at beginning of year $ 4,745 $ 5,032  
Service cost 666 157 $ 147
Interest cost 197 183 201
Actuarial (gain) loss 1,208 (369)  
Benefits paid (239) (258)  
Projected benefit obligation at end of year 6,577 4,745 5,032
Change in plan assets:      
Fair value of plan assets at beginning of year 5,313 5,356  
Actual return on plan assets 1,041 (185)  
Contributions by employer 500 400  
Benefits paid (239) (258)  
Fair value of plan assets at end of year 6,615 5,313 $ 5,356
Funded (unfunded) status at end of year $ 38 $ 568