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Stock Compensation Plans (Textual) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Feb. 22, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Compensation expense recognized | $ 10.2 | $ 16.2 | $ 6.6 |
Restricted Stock Awards |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
General vesting period of options granted | 3 years |  |  |
Restricted Stock Awards | Year 1 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Annual award vesting rights, percentage | 33.33% |  |  |
Restricted Stock Awards | Year 2 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Annual award vesting rights, percentage | 33.33% |  |  |
Restricted Stock Awards | Year 3 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Annual award vesting rights, percentage | 33.33% |  |  |
EPS PSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
General vesting period of options granted | 3 years |  |  |
EPS PSUs | Management |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of maximum amount available for issuance | 10.00% | 0.00% | 0.00% |
TSR PSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
General vesting period of options granted | 3 years |  |  |
Unrecognized compensation cost | $ 1.8 |  |  |
Unrecognized compensation cost, recognition period | 1 year 6 months |  |  |
Expected term (in years) | 2 years 9 months 29 days | 2 years 9 months 29 days |  |
Employee Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares authorized to grant under LT Plan (in shares) | 230,000 |  |  |
Number of shares remained available (in shares) | 173,000 |  |  |
Expected term (in years) | 1 year | 1 year | 1 year |
Term of treasury issues | 1 year |  |  |
The 2019 LT Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares authorized to grant under LT Plan (in shares) |  |  |  | 2,300,000
Number of shares remained available (in shares) | 1,000,000.0 |  |  |
The 2019 LT Plan | Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Term of awards | 7 years |  |  |
The 2019 LT Plan | Restricted Stock Awards |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized compensation cost | $ 3.5 |  |  |
Unrecognized compensation cost, recognition period | 1 year 3 months 18 days |  |  |
The 2019 LT Plan | EPS PSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized compensation cost | $ 0.2 |  |  |
Unrecognized compensation cost, recognition period | 1 year 4 months 24 days |  |  |
Lansing Trade Group LLC |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Compensation expense recognized | $ 4.3 | $ 9.4 |  |

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