| **Income Taxes - Textual (Details) - USD ($)**                                       | 12 Months Ended |                |               |
|--------------------------------------------------------------------------------------|-----------------|----------------|---------------|
||
| **Valuation Allowance [Line Items]**                                                 |            |           |          |   |   |
| Income tax benefit allocated to Capital in excess of par value                       | $ (4,200,000)   | $ (11,700,000) | $ (1,800,000) |   |   |
| Tax benefit resulting from accounting method change related to bad debt              | 19,300,000      | 24,500,000     |          | $ 7,000,000 |   |
| Estimated realization of additional tax benefits                                     | 100,000         | 300,000        |          |   |   |
| Changes to valuation allowance during the period                                     | 300,000         | 4,600,000      | (7,700,000)   |   |   |
| Remaining valuation allowance                                                        | 27,900,000      | 27,600,000     |          |   |   |
| Unrecognized income tax benefits                                                     | 2,800,000       | 2,900,000      | 900,000       |   | $ 1,100,000 |
| Unrecognized tax benefits that would have affected effective tax rate if recognized  | 2,800,000       | 2,900,000      | $ 900,000     |   | $ 400,000 |
| Amount of unrecognized tax benefits that may be released                             | 2,600,000       |           |          |   |   |
| Federal [Member]                                                                     |            |           |          |   |   |
| **Valuation Allowance [Line Items]**                                                 |            |           |          |   |   |
| Net operating loss                                                                   | 0               |           |          |   |   |
| Operating loss carryforward resulting from excess tax benefits of share-based awards | 17,300,000      |           |          |   |   |
| Tax credit carryforward                                                              | 19,300,000      |           |          |   |   |
| State [Member]                                                                       |            |           |          |   |   |
| **Valuation Allowance [Line Items]**                                                 |            |           |          |   |   |
| Net operating loss                                                                   | 64,800,000      |           |          |   |   |
| Pro Forma [Member]                                                                   |            |           |          |   |   |
| **Valuation Allowance [Line Items]**                                                 |            |           |          |   |   |
| Estimated realization of additional tax benefits                                     | $ 53,000,000    | $ 44,000,000   |          |   |   |

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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.
+ References
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| - Definition
Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts.
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| - Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.
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| - Definition
The sum of the tax effects of all items occurring during the period that have been charged or credited directly to other comprehensive income or to related components of shareholders' equity.
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| - Definition
Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.
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| - Definition
The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of unrecognized tax benefits.
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| - Definition
Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.
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| - Definition
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.
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| - Definition
Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.
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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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No definition available.
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