Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2018

Pension plan

Defined Benefit Plan Disclosure [Line Items]

Components of net periodic pension cost

The expected total pension and retirement expense for the Benefit Plan was as follows:

	Three Months Ended March 31,
($ in thousands)	2018			2017
Cost components:
Service cost-benefits earned during the period	$	—		$	(61	)
Interest cost on projected benefit obligation	(91		)	(104		)
Expected return on plan assets	146			129
Net amortization and deferral	(16		)	(50		)
Total net periodic pension cost	$	39		$	(86	)

SERP

Defined Benefit Plan Disclosure [Line Items]

Components of net periodic pension cost

The pension and retirement expense for the SERP was as follows:

	Three Months Ended March 31,
($ in thousands)	2018			2017
Cost components:
Interest cost on projected benefit obligation	$	(64	)	$	(76	)
Net amortization and deferral	(16		)	(93		)
Total net periodic pension cost	$	(80	)	$	(169	)