Common Stock Incentive Plan - Restricted Stock Units Narrative (Details) - Restricted stock units - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
Common Stock Incentive Plan | |||
Expense amortization period (in years) | 4 years | ||
Remaining unamortized share-based compensation expense | $ 1.7 | ||
Minimum | |||
Common Stock Incentive Plan | |||
Vesting period (in years) | 3 years | 3 years | 3 years |
Maximum | |||
Common Stock Incentive Plan | |||
Vesting period (in years) | 4 years | 4 years | 4 years |