Long-Term Debt (Fair Value Measurements) (Details) (USD $)		9 Months Ended		9 Months Ended
Sep. 30, 2013	Sep. 30, 2013 Fuel Futures Contracts [Member] Designated as Hedging Instrument [Member] gal contracts	Dec. 31, 2012 Fuel Futures Contracts [Member] Designated as Hedging Instrument [Member] gal contracts	Sep. 30, 2012 Predecessor [Member] Fuel Futures Contracts [Member] Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Money market funds	$ 7,900,000
Fair value of contract		(459,000)	(79,700)
Number of contracts		317	49
Gallons in contract		11,900,000	2,100,000
Gain/(Loss) on contracts		$ 500,000		$ 800,000

Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be offset against a right to receive collateral under a master netting arrangement.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (d)

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-Topic 815

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The number of derivative instruments of a particular derivative liability or group of derivative liabilities held by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open agreements to purchase or sell mineral resources, energy, and agricultural products at some future point held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Paragraph 28

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