The annual vesting increments percentage until fully vested for common units granted.

No definition available.

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- Definition

The stated maximum per unit quarterly cash distribution to which the general partner is eligible to receive based on a specified percentage for the tier.

+ References

No definition available.

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- Definition

The stated maximum per unit quarterly cash distribution to which the general partner is eligible to receive based on a specified percentage for the tier.

+ References

No definition available.

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- Definition

The stated maximum per unit quarterly cash distribution to which the general partner is eligible to receive based on a specified percentage for the tier.

+ References

No definition available.

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- Definition

The target distribution entitles the general partner to this percentage of cash distributions up to a certain price level per share.

+ References

No definition available.

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- Details

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- Definition

The general partner's quarterly cash distribution entitlement percentage after achievement of the first threshold per unit amount.

+ References

No definition available.

+ Details

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- Definition

The general partner's quarterly cash distribution entitlement percentage after achievement of the second threshold per unit amount.

+ References

No definition available.

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- Definition

The general partner's quarterly cash distribution entitlement percentage after achievement of the third threshold per unit amount.

+ References

No definition available.

+ Details

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- Definition

sharesremainingtobevested

+ References

No definition available.

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- Definition

Sharesvested

+ References

No definition available.

+ Details

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- Definition

Refers to treasury units from forfeitures.

+ References

No definition available.

+ Details

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- Definition

Amount of incentive obligation paid in cash or stock during the period to a limited liability corporation managing member or limited partnership general partner.

+ References

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

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 07-4

-Paragraph 2, 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

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- Definition

The number of units or percentage investment held by the managing member or general partner of the LLC or LP.

+ References

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

-Publisher AICPA

-Name Practice Bulletin (PB)

-Number 14

-Paragraph 15

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

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- Definition

Value of units that were previously issued and have been repurchased during the year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6828210&loc=d3e70191-108054

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Practice Bulletin (PB)

-Number 14

-Paragraph 8

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Units that were previously issued and have been repurchased during the year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 5

-Subparagraph (SAB TOPIC 4.F)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187171-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Practice Bulletin (PB)

-Number 14

-Paragraph 15

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

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- Definition

Net number of non-option equity instruments granted to participants.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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General (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended		1 Months Ended				3 Months Ended		9 Months Ended
	Jan. 25, 2012	Feb. 09, 2011	Jul. 31, 2012	May 31, 2012	May 31, 2011	Feb. 28, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 segment	Oct. 02, 2012	Sep. 30, 2011	Feb. 27, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sharesvested			6,850
Number of primary business lines									4
Purchase of treasury units				$ 221	$ 235	$ 347			$ 221		$ 582
Purchase of treasury units (in units)				6,250	5,750	9,100
Treasury units from forfeitures (in units)					500
Annual vesting increments				25.00%	25.00%							25.00%
Share-based compensation expense							261	36	379		131
Incentive Distribution Rights [Abstract]
General partner interest percentage	2.00%	2.00%				2.00%
General partner quarterly cash distribution entitlement percentage (in hundredths)							2.00%		2.00%
Distribution threshold tier 1 maximum (in dollars per unit)							0.55		0.55
Percentage of cash distribution after threshold 1 (in hundredths)							15.00%		15.00%
Distribution threshold tier 2 maximum (in dollars per unit)							0.625		0.625
Percentage of cash distribution after threshold 2 (in hundredths)							25.00%		25.00%
Distribution threshold tier 3 maximum (in dollars per unit)							0.75		0.75
Percentage of cash distribution after threshold 3 (in hundredths)							50.00%		50.00%
Incentive distributions							$ 0	$ 1,265	$ 2,857	$ 18,000	$ 3,635
sharesremainingtobevested			2,250
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common units issued (in shares)				6,250	6,250	9,100