Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Pension plan assets	$ 52,296	$ 61,936	$ 49,914
Recurring
Assets
Pension plan assets	52,296	61,936
Liabilities
Contingent consideration		4,609
Recurring | Level 1
Assets
Pension plan assets	0	0
Liabilities
Contingent consideration	0	0
Recurring | Level 2
Assets
Pension plan assets	0	0
Liabilities
Contingent consideration	0	0
Recurring | Level 3
Assets
Pension plan assets	52,296	61,936
Liabilities
Contingent consideration	$ 6,911	$ 4,609