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Financing Agreements - Schedule of Revolving Facility Margins and Fees (Details) - Revolving Credit Facility [Member] | 4 Months Ended | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2017
Less than or equal to 1.00:1.00 [Member] |  |
Debt Instrument [Line Items] |  |
Unused capacity, commitment fee rate |  | 0.25%
Greater than 1.00:1.00 but less than or equal to 2.00:1.00 [Member] |  |
Debt Instrument [Line Items] |  |
Unused capacity, commitment fee rate |  | 0.375%
Greater than 2.00:1.00 [Member] |  |
Debt Instrument [Line Items] |  |
Unused capacity, commitment fee rate |  | 0.50%
Base Rate [Member] | Less than or equal to 1.00:1.00 [Member] |  |
Debt Instrument [Line Items] |  |
Margin rate | 0.50% |
Base Rate [Member] | Greater than 1.00:1.00 but less than or equal to 2.00:1.00 [Member] |  |
Debt Instrument [Line Items] |  |
Margin rate | 0.75% |
Base Rate [Member] | Greater than 2.00:1.00 [Member] |  |
Debt Instrument [Line Items] |  |
Margin rate | 1.00% |
Eurodollar Rate [Member] | Less than or equal to 1.00:1.00 [Member] |  |
Debt Instrument [Line Items] |  |
Margin rate | 1.50% |
Eurodollar Rate [Member] | Greater than 1.00:1.00 but less than or equal to 2.00:1.00 [Member] |  |
Debt Instrument [Line Items] |  |
Margin rate | 1.75% |
Eurodollar Rate [Member] | Greater than 2.00:1.00 [Member] |  |
Debt Instrument [Line Items] |  |
Margin rate | 2.00% |

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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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. + References No definition available. + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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