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Stock-based Compensation (Details) - USD ($) |  | 3 Months Ended
--- | --- | ---
Jan. 31, 2019 | Mar. 31, 2021 | Mar. 31, 2020
Stock-based compensation (benefit) expense |  | $ 4,100,000 | $ 2,500,000
Income tax benefits related to the stock-based compensation plans |  | $ 1,100,000 | $ 600,000
The 2019 Long-term Incentive Compensation Program [Member] |  |  |
Awards vesting period | 3 years |  |
Restricted Stock Units (RSUs) [Member] |  |  |
Awards granted |  | 238,985 | 170,228
Restricted Stock Units (RSUs) [Member] | Omnibus Plan 2014 [Member] |  |  |
Total unrecognized compensation cost |  | $ 7,400,000 |
Weighted-average period of recognition of compensation cost |  | 2 years 7 months 6 days |
Total fair value of awards vested |  | $ 4,800,000 | $ 5,000,000.0
Performance-based Restricted Stock Units [Member] |  |  |
Awards granted |  | 62,790 | 72,143
Phantom Share Units (PSUs) [Member] | Phantom Stock Plan [Member] |  |  |
Stock-based compensation (benefit) expense |  | $ 600,000 | $ (900,000)
Total fair value of awards vested |  | $ 23,000 | $ 1,000

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