Employee Benefit Plans (Plan Assets at Fair Value) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Equity partnerships
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Fair Value by Hierarchy and NAV [Extensible List]	Fair Value Measured at Net Asset Value Per Share	Fair Value Measured at Net Asset Value Per Share
Hedge fund investments
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Fair Value by Hierarchy and NAV [Extensible List]	Fair Value Measured at Net Asset Value Per Share	Fair Value Measured at Net Asset Value Per Share
Employee Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	$ 57,882	$ 56,157	$ 73,375
Employee Pension Plans | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	46,671	41,685
Employee Pension Plans | Level 1 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	46,671	41,685
Employee Pension Plans | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	3,063	2,872
Employee Pension Plans | Level 2 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	3,063	2,872
Employee Pension Plans | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	0	0
Employee Pension Plans | Level 3 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	0	0
Employee Pension Plans | Fair Value, Inputs, Level 1, 2 and 3 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	49,734	44,557
Employee Pension Plans | Fair Value Measured at Net Asset Value Per Share | Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	8,148	11,600
Employee Pension Plans | Cash and cash equivalents | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	3,464	2,757
Employee Pension Plans | Cash and cash equivalents | Level 1 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	3,464	2,757
Employee Pension Plans | Cash and cash equivalents | Level 2 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	0	0
Employee Pension Plans | Cash and cash equivalents | Level 3 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	0	0
Employee Pension Plans | Fixed income funds | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	4,583	4,436
Employee Pension Plans | Fixed income funds | Level 1 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	1,520	1,564
Employee Pension Plans | Fixed income funds | Level 2 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	3,063	2,872
Employee Pension Plans | Fixed income funds | Level 3 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	0	0
Employee Pension Plans | Mutual funds | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	41,687	37,364
Employee Pension Plans | Mutual funds | Level 1 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	41,687	37,364
Employee Pension Plans | Mutual funds | Level 2 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	0	0
Employee Pension Plans | Mutual funds | Level 3 | Non-Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	0	0
Employee Pension Plans | Equity partnerships | Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	3,826	4,078
Employee Pension Plans | Hedge fund investments | Closely Held Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plans' assets	$ 4,322	$ 7,522