Subsequent Events	12 Months Ended
Dec. 31, 2013
Subsequent Events [Abstract]
Subsequent Events	23. Subsequent Events In March 2014, we entered into an amended and restated credit agreement (the “New Credit Facility”). The New Credit Facility is a senior secured revolving credit facility maturing March 4, 2019 with a total borrowing capacity of $450 million, under which swingline loans may be drawn up to $10.0 million and standby letters of credit may be issued up to an aggregate of $45.0 million. The New Credit Facility may be increased, from time to time, upon the Partnership’s written request, subject to certain conditions, up to an additional $100.0 million. All obligations under the New Credit Facility are secured by substantially all of the assets of the Partnership and its subsidiaries. The Partnership is required to comply with certain financial covenants under the New Credit Facility. The Partnership is required to maintain a total leverage ratio (as defined) for the most recently completed four fiscal quarters of not greater than 4.50 to 1.00. Such threshold is increased to 5.00 to 1.00 for the two quarters preceding the closing of a material acquisition (as defined) or upon the issuance of senior notes (as defined). Upon the issuance of senior notes, the Partnership is also required to maintain a senior leverage ratio (as defined) for the most recently completed four fiscal quarters on a pro forma basis of not greater than 3.50 to 1.00. The Partnership is also required to maintain a consolidated interest coverage ratio (as defined) on a pro forma basis of at least 2.75 to 1.00. Borrowings under the New Credit Facility bear interest, at the Partnership’s option, at (1) a rate equal to the London Interbank Offering Rate (“LIBOR”), for interest periods of one week or one, two, three or six months, plus a margin of 2.00% to 3.25% per annum, depending on the Partnership’s total leverage ratio (as defined) or (2) (a) a base rate equal to the greatest of: (i) the federal funds rate, plus 0.5%, (ii) LIBOR for one month interest periods, plus 1.00% per annum or (iii) the rate of interest established by the agent, from time to time, as its prime rate, plus (b) a margin of 1.00% to 2.25% per annum depending on the Partnership’s total leverage ratio. In addition, the Partnership incurs a commitment fee based on the unused portion of the revolving credit facility at a rate of 0.35% to 0.50% per annum depending on the Partnership’s total leverage ratio. The New Credit Facility prohibits the Partnership from making distributions to its unitholders if any potential default or event of default occurs or would result from the distribution, or the Partnership is not in compliance with its financial covenants. In addition, the New Credit Facility contains various covenants which may limit, among other things, the Partnership’s ability to grant liens; create, incur, assume, or suffer to exist other indebtedness; or make any material change to the nature of the Partnership’s business, including mergers, liquidations, and dissolutions; and make certain investments, acquisitions or dispositions.

23. Subsequent Events

In March 2014, we entered into an amended and restated credit agreement (the “New Credit Facility”). The New Credit Facility is a senior secured revolving credit facility maturing March 4, 2019 with a total borrowing capacity of $450 million, under which swingline loans may be drawn up to $10.0 million and standby letters of credit may be issued up to an aggregate of $45.0 million. The New Credit Facility may be increased, from time to time, upon the Partnership’s written request, subject to certain conditions, up to an additional $100.0 million. All obligations under the New Credit Facility are secured by substantially all of the assets of the Partnership and its subsidiaries.

The Partnership is required to comply with certain financial covenants under the New Credit Facility. The Partnership is required to maintain a total leverage ratio (as defined) for the most recently completed four fiscal quarters of not greater than 4.50 to 1.00. Such threshold is increased to 5.00 to 1.00 for the two quarters preceding the closing of a material acquisition (as defined) or upon the issuance of senior notes (as defined). Upon the issuance of senior notes, the Partnership is also required to maintain a senior leverage ratio (as defined) for the most recently completed four fiscal quarters on a pro forma basis of not greater than 3.50 to 1.00. The Partnership is also required to maintain a consolidated interest coverage ratio (as defined) on a pro forma basis of at least 2.75 to 1.00.

Borrowings under the New Credit Facility bear interest, at the Partnership’s option, at (1) a rate equal to the London Interbank Offering Rate (“LIBOR”), for interest periods of one week or one, two, three or six months, plus a margin of 2.00% to 3.25% per annum, depending on the Partnership’s total leverage ratio (as defined) or (2) (a) a base rate equal to the greatest of: (i) the federal funds rate, plus 0.5%, (ii) LIBOR for one month interest periods, plus 1.00% per annum or (iii) the rate of interest established by the agent, from time to time, as its prime rate, plus (b) a margin of 1.00% to 2.25% per annum depending on the Partnership’s total leverage ratio. In addition, the Partnership incurs a commitment fee based on the unused portion of the revolving credit facility at a rate of 0.35% to 0.50% per annum depending on the Partnership’s total leverage ratio.

The New Credit Facility prohibits the Partnership from making distributions to its unitholders if any potential default or event of default occurs or would result from the distribution, or the Partnership is not in compliance with its financial covenants. In addition, the New Credit Facility contains various covenants which may limit, among other things, the Partnership’s ability to grant liens; create, incur, assume, or suffer to exist other indebtedness; or make any material change to the nature of the Partnership’s business, including mergers, liquidations, and dissolutions; and make certain investments, acquisitions or dispositions.