Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Amortization of pension and postretirement benefits items:
Actuarial loss (1)	[1]		$ (40)
Settlement expense (2)	[2]		526
Total before tax			486
Income tax			(137)
Amount reclassified out of accumulated other comprehensive income		$ 2	$ 349

[1] These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost in Note 3 “Employee Benefit Plans”

[2] This accumulated other comprehensive income (loss) component resulted from an international pension plan settlement.