Retirement Plans (Tables)

6 Months Ended

Jun. 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 June 30,				Six months ended June 30,
2020		2019		2020		2019
$	11,354	$	3,796	$	6,940	$	10,710