Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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Data Type:	num:percentItemType
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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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Balance Type:	credit
Period Type:	instant

- 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

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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Balance Type:	debit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value of the amount outstanding under the credit facility.

+ References

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-Name Accounting Standards Codification
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Balance Type:	credit
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Balance Type:	credit
Period Type:	instant

- Definition

The amortization percentage after first eight payments over principal amount.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
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- Definition

The amortization percentage on first eight payments over principal amount.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of applicable margin on the borrowings.

+ References

No definition available.

+ Details

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- Details

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Period Type:

- Details

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- Details

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Long-Term Debt and Credit Facilities - Senior Credit Facilities (Details) - First lien credit agreement - USD ($) $ in Millions	Jul. 12, 2017	Mar. 31, 2018	Dec. 31, 2017
Debt instruments
Debt unamortized discount		$ 9.5	$ 9.9
Senior secured term loan
Debt instruments
Debt instrument face amount	$ 350.0
Debt unamortized discount	$ 7.0
Principal percentage of each of first eight payments (as a percent)	0.60%
Principal percentage of each payment thereafter (as a percent)	1.30%
Senior secured revolving facility
Debt instruments
Maximum borrowing capacity	$ 100.0
Current borrowings outstanding	$ 0.0
Outstanding credit facility		$ 20.6	$ 20.6
LIBOR \| Senior secured term loan
Debt instruments
Interest rate (as a percent)	1.00%
Applicable margin (as a percent)	7.50%
LIBOR \| Senior secured revolving facility
Debt instruments
Applicable margin (as a percent)	7.00%
Base rate \| Senior secured term loan
Debt instruments
Interest rate (as a percent)	6.50%
Base rate \| Senior secured revolving facility
Debt instruments
Applicable margin (as a percent)	6.00%