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Acquisitions (Details) (USD $) | 9 Months Ended | 2 Months Ended | 3 Months Ended | 9 Months Ended |  | 0 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2014 General partner | Sep. 30, 2013 General partner | Aug. 30, 2013 S&R | Sep. 30, 2013 S&R | Sep. 30, 2014 S&R | Sep. 30, 2013 S&R | Dec. 31, 2013 S&R | Aug. 30, 2013 S&R Common units | Sep. 30, 2013 S&R Limited partner Common units | Sep. 30, 2013 S&R Limited partner Common units | Sep. 30, 2013 S&R Limited partner Subordinated units | Sep. 30, 2013 S&R Limited partner Subordinated units
Acquisition of compression assets |  |  |  |  |  |  |  |  |  |  |  |
Number of common units issued in exchange for contribution of assets |  |  |  |  |  |  |  | 7,425,261 |  |  |  |
Cost of acquisition |  |  |  |  |  |  |  |  |  |  |  |
Value of common units issued in exchange for contribution of assets |  |  |  |  |  |  |  | $ 181,900,000 |  |  |  |
Effective purchase price |  |  | 178,500,000 |  |  |  |  |  |  |  |  |
Purchase price adjustment due to working capital changes |  |  | 3,400,000 |  |  |  |  |  |  |  |  |
Adjustments to purchase accounting |  |  |  |  | 0 |  |  |  |  |  |  |
Expenses associated with acquisition activities and transaction activities |  |  |  |  | 50,000 |  | 2,100,000 |  |  |  |  |
Revenue, Net Income and Pro Forma Financial Information - Unaudited |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  | 44,934,000 |  | 127,547,000 |  |  |  |  |  |
Net income |  |  |  | 3,822,000 |  | 13,269,000 |  |  |  |  |  |
Basic and diluted net income (in dollars per unit) |  |  |  |  |  |  |  |  | $ 0.10 | $ 0.34 | $ 0.10 | $ 0.34
Revenue |  |  |  | 6,600,000 |  | 23,300,000 |  |  |  |  |  |
Direct operating expenses |  |  |  | 2,900,000 |  | 10,300,000 |  |  |  |  |  |
Depreciation and amortization |  |  |  | 1,600,000 |  | 6,400,000 |  |  |  |  |  |
General partner interest (as a percent) | 1.70% | 2.00% |  |  |  |  |  |  |  |  |  |
Estimated incremental interest expense reductions due to payment of revolving credit facility |  |  |  | $ 50,000 |  | $ 100,000 |  |  |  |  |  |

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- Definition The pro forma basic and diluted net income per share for a period, as if the business combination or combinations had been completed at the beginning of a period. + References No definition available. + Details
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- Definition This element represents the amount of depreciation and amortization of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References No definition available. + Details
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- Definition This element represents the amount of direct operating expenses of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References No definition available. + Details
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- Definition Amount of estimated incremental interest expense reductions due to payment of revolving credit facility, used to arrive at pro forma financial information under business acquisition. + References No definition available. + Details
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- Definition Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition. + References No definition available. + Details
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- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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