Significant Accounting Policies Share-Based Compensation (Details) |
12 Months Ended |
---|---|
Dec. 31, 2021 | |
Stock Options [Member] | |
Share-based Compensation Arrangements by Share-based Payment Award [Line Items] | |
Vesting period (in years) | 7 years |
Restricted Stock [Member] | |
Share-based Compensation Arrangements by Share-based Payment Award [Line Items] | |
Vesting period (in years) | 3 years |
Share-based Compensation Arrangement by Share-based Payment Award, Award Required Holding Period | 2 years |