Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2020

Employee Benefit Plans

Schedule of components of the net periodic benefit cost

	Three Months Ended March 31,
			2019
	2020		(Restated)
Service cost	$	19	$	23
Interest cost		498		605
Expected return on plan assets		(644)		(626)
Amortization:
Amortization of prior service cost		26		26
Amortization of net (gain) loss		432		415
Net periodic benefit cost	$	331	$	443