Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2019

Retirement Plans [Abstract]

Schedule Of Expenses For Retirement, Profit-Sharing Plans, Excess Benefit Plans And Other Similar Plans

Three months ended September 30,				Nine months ended September 30,
2019		2018		2019		2018
$	6,445	$	5,463	$	17,155	$	15,436