Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2020

Defined Benefit Plan Disclosure

Schedule of Costs of Retirement Plans

The following table summarizes the expense associated with the contributions made to these plans:

	Three Months Ended March 31,
	2020		2019
United States	$	(138)	$	550
Canada	39		38
United Kingdom	111		107
	$	12	$	695

United States

Defined Benefit Plan Disclosure

Schedule of Net Benefit Costs

Net periodic pension costs for the United States defined benefit pension plan for the three months ended March 31, 2020 and 2019 were as follows:

	Three Months Ended March 31,
	2020		2019
Interest cost	$	56	$	162
Expected return on plan assets	(58)		(180)
Recognized net actuarial loss	13		31
Net periodic pension cost	$	11	$	13

United Kingdom

Defined Benefit Plan Disclosure

Schedule of Net Benefit Costs

Net periodic pension costs for the United Kingdom defined benefit pension plan for the three months ended March 31, 2020 and 2019 were as follows:

	Three Months Ended March 31,
	2020		2019
Interest cost	$	44	$	54
Expected return on plan assets	(59)		(62)
Amortization of prior service costs and transition amount	6		11
Recognized net actuarial loss	64		53
Net periodic pension cost	$	55	$	56