v3.2.0.727

Partnership Equity and Distributions (Details) - Jun. 30, 2015 $ / shares in Units, $ in Thousands	USD ($) $ / shares $ / item	USD ($) $ / shares $ / item
Partnership equity and distributions
Annual cash distribution (per unit)		0.68
Minimum cash distributions to trigger unitholder and general partner distributions | $ / shares		$ 0.1955
Distribution Made to Limited Partner, Distributions Declared, Per Unit | $ / shares	$ 0.19
Common units | Limited Partner (Common units)
Partnership equity and distributions
Distribution Made to Limited Partner, Distributions Declared, Per Unit | $ / shares	$ 0.19	$ 0.37
Total Distribution | $	$ 14,429	$ 28,098
Limited Partner (Subordinated units) | Limited Partner (Common units)
Partnership equity and distributions
Distribution Made to Limited Partner, Distributions Declared, Per Unit | $ / shares	$ 0.19	$ 0.37
Total Distribution | $	$ 14,429	$ 28,098
Above $0.1955 up to $0.2125 (Member)
Partnership equity and distributions
Unitholders marginal percentage interest in distribution		85.00%
General Partners marginal percentage interest in distribution		15.00%
Above $0.2125 up to $0.2550 (Member)
Partnership equity and distributions
Unitholders marginal percentage interest in distribution		75.00%
General Partners marginal percentage interest in distribution		25.00%
Above $0.2550 (Member)
Partnership equity and distributions
Pro rata cash distribution to the holders of common and subordinate units		0.2550
Unitholders marginal percentage interest in distribution		50.00%
General Partners marginal percentage interest in distribution		50.00%
Minimum
Partnership equity and distributions
Minimum quarterly cash distribution (per unit)	0.17
Minimum | Above $0.1955 up to $0.2125 (Member)
Partnership equity and distributions
Pro rata cash distribution to the holders of common and subordinate units		0.1955
Minimum | Above $0.2125 up to $0.2550 (Member)
Partnership equity and distributions
Pro rata cash distribution to the holders of common and subordinate units		0.2125
Maximum | Above $0.1955 up to $0.2125 (Member)
Partnership equity and distributions
Pro rata cash distribution to the holders of common and subordinate units		0.2125
Maximum | Above $0.2125 up to $0.2550 (Member)
Partnership equity and distributions
Pro rata cash distribution to the holders of common and subordinate units		0.2550

X

- Definition

Percentage of incentive obligation paid in cash or stock during the period to a limited liability corporation managing member or limited partnership partner, as the holder of our incentive rights ("IDRs").

+ References

No definition available.

+ Details

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X

- Definition

Represents minimum annual distribution as per partnership agreement.

+ References

No definition available.

+ Details

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X

- Definition

Represents minimum quarterly distribution as per partnership agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	am_
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X

- Definition

Represents the pro rata cash distribution made to the holders of common and subordinated units.

+ References

No definition available.

+ Details

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X

- Definition

Represents the minimum amount of cash distributions per common unit and subordinated unit in any quarter which will trigger distributions to the entity's unitholders and general partner as holder of incentive distribution rights.

+ References

No definition available.

+ Details

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X

- Definition

Represnts the unitholders marginal percentage interest in distribution.

+ References

No definition available.

+ Details

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X

- Definition

Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 272



-SubTopic 10



-Section 50



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055



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



Reference 3: 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)



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- Definition

Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

+ References

Reference 1: 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



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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 272



-SubTopic 10



-Section 50



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055



Reference 3: 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=27012166&loc=d3e187085-122770

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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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- Details

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