Defined Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2020

Defined Benefit Plans And Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Net Periodic Benefit Costs

The components of net periodic benefit costs from these defined benefit plans are as follows:

	Three Months Ended June 30,
(Dollars in thousands)	Pension Benefits						Other Benefits
	2020			2019			2020			2019
Service cost	$	45		$	36		$	1		$	1
Interest cost		60			65			6			4
Expected return on plan assets		(68	)		(63	)		—			—
Accretion of prior service cost		—			—			(5	)		(5	)
Amortization of net gain		—			(15	)		—			(1	)
Settlement loss (gain)		22			(37	)		—			—
Net periodic benefit expense (income)	$	59		$	(14	)	$	2		$	(1	)
	Six Months Ended June 30,
(Dollars in thousands)	Pension Benefits						Other Benefits
	2020			2019			2020			2019
Service cost	$	64		$	72		$	1		$	2
Interest cost		105			129			6			8
Expected return on plan assets		(136	)		(127	)		—			—
Accretion of prior service cost		—			—			(10	)		(10	)
Amortization of net gain		—			(30	)		—			(2	)
Settlement loss (gain)		22			(37	)		—			—
Net periodic benefit expense (income)	$	55		$	7		$	(3	)	$	(2	)

Service costs are reported as a component of salaries and employee benefits on the Consolidated Statements of Income, while interest costs, expected return on plan assets, amortization (accretion) of prior service cost, and amortization of (gain) loss are reported as a component of other income.