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Long-Term Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 30, 2017	Dec. 31, 2016
Debt Instrument
Long-term debt	$ 1,392,947		$ 1,392,947			$ 1,441,724
Partnership’s term loan facility due May 2018
Debt Instrument
Long term debt gross	0		0			150,000
Less: Deferred financing costs, net of amortization	0		0			(353)
Long-term debt	0		0			149,647
Partnership’s 6% senior notes due April 2021 | Senior Notes
Debt Instrument
Long term debt gross	350,000		350,000			350,000
Less: Debt discount, net of amortization	(2,700)		(2,700)			(3,213)
Less: Deferred financing costs, net of amortization	(3,595)		(3,595)			(4,366)
Long-term debt	$ 343,705		$ 343,705			342,421
Interest rate (as a percent)	6.00%		6.00%
Partnership’s 6% senior notes due October 2022 | Senior Notes
Debt Instrument
Long term debt gross	$ 350,000		$ 350,000			350,000
Less: Debt discount, net of amortization	(3,603)		(3,603)			(4,076)
Less: Deferred financing costs, net of amortization	(4,155)		(4,155)			(4,768)
Long-term debt	$ 342,242		$ 342,242			341,156
Interest rate (as a percent)	6.00%		6.00%
Revolving Credit Facility | Revolving credit facility due November 2020
Debt Instrument
Long-term debt	$ 75,500		$ 75,500			99,000
Commitment fee amount	200	$ 200	500	$ 400
Revolving Credit Facility | Partnership’s revolving credit facility due March 2022
Debt Instrument
Long-term debt	631,500		631,500			0
Long term debt	631,500		631,500
Interest rate (as a percent)					6.00%
Revolving Credit Facility | Partnership’s revolving credit facility due May 2018
Debt Instrument
Long-term debt	0		0			$ 509,500
Commitment fee amount	$ 600	$ 300	$ 1,500	$ 1,000

X

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt discount.

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Amount of issuance costs recognized in a share-lending arrangement entered into by the entity, in contemplation of a convertible debt offering or other financing, after deduction of accumulated amortization or the effects of subsequent adjustments.

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Amount of the fee for available but unused credit capacity under the credit facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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