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Retirement Plans (Tables)
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Components of net periodic pension cost
The pension and retirement expense for the SERP was as follows:
 
Three Months Ended March 31,
($ in thousands)
2020
 
2019
Cost components:
 
 
 
Interest cost
$
(57
)
 
$
(76
)
Net amortization and other
(22
)
 
(16
)
Total net periodic pension expense
$
(79
)
 
$
(92
)
Total pension and retirement earnings for the Benefit Plan was as follows:
 
Three Months Ended March 31,
($ in thousands)
2020
 
2019
Earnings (cost) components:
 
 
 
Interest cost
$
(85
)
 
$
(97
)
Expected return on plan assets
161

 
131

Net amortization and deferral
(17
)
 
(19
)
Total net periodic pension earnings
$
59

 
$
15