Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2020

Retirement Plans [Abstract]

Schedule Of Net (Losses)/Expenses For Retirement, Profit-Sharing Plans, Excess Benefit Plans And Other Similar Plans

Three months ended September 30,				Nine months ended September 30,
2020		2019		2020		2019
$	11,506	$	6,445	$	18,445	$	17,155