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Stock Compensation Plans (Textual) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | May 02, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Compensation expense recognized | $ 16,200,000 | $ 6,600,000 | $ 6,100,000 |  |
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 | 50.00% | 18.00% | 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 | $ 2,600,000 |  |  |  |
Expected term (in years) | 2 years 10 months 2 days | 2 years 9 months 29 days |  |  |
Stock Options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Expected term (in years) | 1 year | 1 year | 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) | 2,500,000 |  |  |  |
The 2019 LT Plan | Options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Term of awards | 7 years |  |  |  |
General vesting period of options granted | 3 years |  |  |  |
Expected volatility measurement period |  |  |  | 5 years 6 months |
Unrecognized compensation cost | $ 0 |  |  |  |
Expected term (in years) |  |  |  | 5 years 6 months |
The 2019 LT Plan | Restricted Stock Awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized compensation cost | 8,200,000 |  |  |  |
The 2019 LT Plan | EPS PSUs |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized compensation cost | $ 1,400,000 |  |  |  |
2004 ESP | Stock Options |  |  |  |  |
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) | 230,000 |  |  |  |
Term of treasury issues | 1 year |  |  |  |
Lansing Trade Group, LLC (b) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Compensation expense recognized | $ 9,400,000 |  |  |  |

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