Represents the amount by which the borrowing capacity under the credit facility can be extended.

No definition available.

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- Definition

Represents the ratio of net debt (as defined by the agreement) to consolidated adjusted earnings before, interest, taxes, depreciation and amortization allowed under the terms of the debt agreement.

+ References

No definition available.

+ Details

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- Definition

Represents the interest coverage ratio maintained under the terms of the debt agreement.

+ References

No definition available.

+ Details

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- Definition

Outstanding letters of credit and other obligations which reduce availability of Line of Credit.

+ References

No definition available.

+ Details

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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.

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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

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ 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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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04.(a))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

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Long-Term Debt - Senior Secured Credit Facility (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Long Term Debt
Repayments of debt	$ 455,491	$ 609,914	$ 728,993
Unpaid principal balance payment	$ 3,174
Consolidated interest coverage ratio	16.88
Leverage ratio	0.85
Senior secured revolving credit facility
Long Term Debt
Maximum borrowing capacity of credit facility	$ 1,200,000
Additional amount by which facility size can be increased	750,000
Availability on the senior secured revolver	1,200,000
Outstanding letters of credit and other obligations which reduce availability	$ 12,000
Senior secured revolving credit facility \| Minimum
Long Term Debt
Unused commitment fee (as a percent)	0.225%
Consolidated interest coverage ratio	2.50
Leverage ratio	3.50
Senior secured revolving credit facility \| Minimum \| LIBOR
Long Term Debt
Interest rate added to the base rate (as a percent)	1.00%
Senior secured revolving credit facility \| Maximum
Long Term Debt
Unused commitment fee (as a percent)	0.375%
Leverage ratio	5.00
Senior secured revolving credit facility \| Maximum \| LIBOR
Long Term Debt
Interest rate added to the base rate (as a percent)	2.00%
Senior secured revolving credit facility \| Maximum \| Prime
Long Term Debt
Interest rate added to the base rate (as a percent)	1.00%