v3.3.0.814

Condensed Combined Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Revenue: |  |  |  |
Gathering and compression-affiliate | $ 59,220 | $ 26,282 | $ 168,056 | $ 54,978
Water handling-affiliate | 21,819 | 42,631 | 86,759 | 107,907
Gathering and compression–third party | 38 |  | 38 |
Water handling-third party | 627 | 2,671 | 778 | 2,671
Total revenues | 81,704 | 71,584 | 255,631 | 165,556
Revenue - affiliate | 81,039 | 68,913 | 254,815 | 162,885
Operating expenses: |  |  |  |
Direct operating | 1,609 | 12,579 | 38,830 | 32,532
General and administrative (including $5,284, $17,663, $2,111 and $7,392 of equity-based compensation in 2015 and 2014, respectively) | 13,842 | 7,643 | 37,923 | 21,187
Depreciation | 21,561 | 14,617 | 63,515 | 35,739
Total operating expenses | 37,012 | 34,839 | 140,268 | 89,458
Operating income | 44,692 | 36,745 | 115,363 | 76,098
Interest expense | 2,044 | 2,455 | 5,266 | 4,121
Net income and comprehensive income | 42,648 | $ 34,290 | 110,097 | $ 71,977
Less Pre-Water Acquisition net income attributed to parent | (7,841) |  | (40,193) |
Less general partner's interest in net income | (295) |  | (295) |
Limited partners' interest in net income | $ 34,512 |  | $ 69,609 |
Basic |  |  |  |
Common units | $ 0.23 |  | $ 0.46 |
Subordinated units | 0.22 |  | 0.45 |
Diluted |  |  |  |
Common units | 0.23 |  | 0.46 |
Subordinated units | $ 0.22 |  | $ 0.45 |
Basic |  |  |  |
Common units | 78,018,037 |  | 76,640,925 |
Subordinated units | 75,940,957 |  | 75,940,957 |
Diluted |  |  |  |
Common units | 78,034,156 |  | 76,657,439 |
Subordinated units | 75,940,957 |  | 75,940,957 |

X
- Definition The aggregate cost of goods produced and sold and services rendered, excluding depreciation and amortization, during the reporting. + References No definition available. + Details
Name: | am_CostOfRevenueExcludingDepreciationAndAmortization
Namespace Prefix: | am_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Revenue related to midstream and downstream gas activities from an affiliate. May include the following: gathering from wells, processing to remove impurities, storage, transmission, and the sale of natural gas and related products. + References No definition available. + Details
Name: | am_GasGatheringTransportationMarketingAndProcessingRevenueAffiliate
Namespace Prefix: | am_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Revenue from marine-related services and products such as lubricants for offshore drilling, and retail or wholesale sales in a marina with affiliates. + References No definition available. + Details
Name: | am_MarineServicesRevenueAffiliate
Namespace Prefix: | am_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate amount of net income allocated to general partners subsequent to IPO. + References No definition available. + Details
Name: | am_NetIncomeLossAllocatedToGeneralPartnersPostIpo
Namespace Prefix: | am_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate amount of net income allocated to limited partners subsequent to IPO. + References No definition available. + Details
Name: | am_NetIncomeLossAllocatedToLimitedPartnersPostIpo
Namespace Prefix: | am_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Per unit of ownership amount after tax of income (loss) available to outstanding limited partnership (LP) common unit-holder. + References No definition available. + Details
Name: | am_NetIncomeLossPerOutstandingLimitedPartnershipCommonUnitBasicNetOfTax
Namespace Prefix: | am_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per unit of ownership amount after tax of income (loss) available to limited partnership (LP) common unit-holder and units that would have been outstanding assuming the issuance of limited partner units for dilutive potential units outstanding. + References No definition available. + Details
Name: | am_NetIncomeLossPerOutstandingLimitedPartnershipCommonUnitDilutedNetOfTax
Namespace Prefix: | am_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per unit of ownership amount after tax of income (loss) available to outstanding limited partnership (LP) subordinated unit-holder. + References No definition available. + Details
Name: | am_NetIncomeLossPerOutstandingLimitedPartnershipSubordinatedUnitBasicNetOfTax
Namespace Prefix: | am_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per unit of ownership amount after tax of income (loss) available to limited partnership (LP) subordinated unit-holder and units that would have been outstanding assuming the issuance of limited partner units for dilutive potential units outstanding. + References No definition available. + Details
Name: | am_NetIncomeLossPerOutstandingLimitedPartnershipSubordinatedUnitDilutedNetOfTax
Namespace Prefix: | am_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate amount of pre-acquisition net income allocated to parent. + References No definition available. + Details
Name: | am_NetIncomeLossPreAcquisitionNetIncomeAllocatedToParent
Namespace Prefix: | am_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Weighted average number of limited partnership common units outstanding determined by relating the portion of time within a reporting period that limited partnership common units have been outstanding to the total time in that period. + References No definition available. + Details
Name: | am_WeightedAverageLimitedPartnershipCommonUnitsOutstandingBasic
Namespace Prefix: | am_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average number of limited partnership common units outstanding determined by relating the portion of time within a reporting period that limited partnership common units have been outstanding to the total time in that period. Used in the calculation of diluted net income or loss per limited partnership common unit. + References No definition available. + Details
Name: | am_WeightedAverageLimitedPartnershipCommonUnitsOutstandingDiluted
Namespace Prefix: | am_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average number of limited partnership subordinated units outstanding determined by relating the portion of time within a reporting period that limited partnership subordinated units have been outstanding to the total time in that period. Used in the calculation of diluted net income or loss per limited partnership subordinated unit. + References No definition available. + Details
Name: | am_WeightedAverageLimitedPartnershipSubordinatedUnitsOutstandingDiluted
Namespace Prefix: | am_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average number of limited partnership subordinated units outstanding determined by relating the portion of time within a reporting period that limited partnership subordinated units have been outstanding to the total time in that period. + References No definition available. + Details
Name: | am_WeightedAverageLimitedPartnershipUnitsOutstandingBasic
Namespace Prefix: | am_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
Name: | us-gaap_DepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerLimitedPartnershipUnitAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue related to midstream and downstream gas activities. May include the following: gathering from wells, processing to remove impurities, storage, transmission, and the sale of natural gas and related products. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62246-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62136-109447 + Details
Name: | us-gaap_GasGatheringTransportationMarketingAndProcessingRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_GeneralAndAdministrativeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The portion of profit or loss for the period which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.20) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_IncomeLossAttributableToParent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_InterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Revenue from marine-related services and products such as lubricants for offshore drilling, and retail or wholesale sales in a marina. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62246-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62136-109447 + Details
Name: | us-gaap_MarineServicesRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitDilutedAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitDilutedOtherDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitOtherDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OilAndGasRevenueAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. + References No definition available. + Details
Name: | us-gaap_OperatingExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OperatingExpensesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Related Parties -URI http://asc.fasb.org/extlink&oid=16382449 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999 + Details
Name: | us-gaap_RevenueFromRelatedParties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration