Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
Sep. 30, 2022 |
Sep. 30, 2021 |
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Share-based Payment Arrangement, Expense | $ 4.2 | $ 3.9 | $ 12.6 | $ 11.6 |
Nonvested Stock Award [Member] | Minimum [Member] | ||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Vesting period (in years) | 4 years | |||
Nonvested Stock Award [Member] | Maximum [Member] | ||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Vesting period (in years) | 7 years | |||
Stock Appreciation Rights (SARs) [Member] | ||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Vesting period (in years) | 4 years | |||
Contractual terms of stock options granted (in years) | 10 years |