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Partners' Capital - Incentive Distribution Rights (Details) (USD $) | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013
Limited partner | Incentive Distribution Rights | Minimum Quarterly Distribution |  |
Partners' Capital |  |
Marginal percentage interest in distributions | 98.30% |
Limited partner | Incentive Distribution Rights | First Target Distribution |  |
Partners' Capital |  |
Marginal percentage interest in distributions | 98.30% |
Limited partner | Incentive Distribution Rights | Second Target Distribution |  |
Partners' Capital |  |
Marginal percentage interest in distributions | 85.30% |
Limited partner | Incentive Distribution Rights | Third Target Distribution |  |
Partners' Capital |  |
Marginal percentage interest in distributions | 75.30% |
Limited partner | Incentive Distribution Rights | Thereafter |  |
Partners' Capital |  |
Marginal percentage interest in distributions | 50.30% |
General partner |  |
Partners' Capital |  |
General Partner, interest (as a percent) | 1.70% | 2.00%
General partner | Incentive Distribution Rights | Minimum Quarterly Distribution |  |
Partners' Capital |  |
Quarterly distribution per unit (in dollars per share) | $ 0.425 |
Marginal percentage interest in distributions | 1.70% |
General partner | Incentive Distribution Rights | First Target Distribution |  |
Partners' Capital |  |
Marginal percentage interest in distributions | 1.70% |
General partner | Incentive Distribution Rights | First Target Distribution | Maximum |  |
Partners' Capital |  |
Quarterly distribution per unit (in dollars per share) | $ 0.4888 |
General partner | Incentive Distribution Rights | Second Target Distribution |  |
Partners' Capital |  |
Marginal percentage interest in distributions | 14.70% |
General partner | Incentive Distribution Rights | Second Target Distribution | Minimum |  |
Partners' Capital |  |
Quarterly distribution per unit (in dollars per share) | $ 0.4888 |
General partner | Incentive Distribution Rights | Second Target Distribution | Maximum |  |
Partners' Capital |  |
Quarterly distribution per unit (in dollars per share) | $ 0.5313 |
General partner | Incentive Distribution Rights | Third Target Distribution |  |
Partners' Capital |  |
Marginal percentage interest in distributions | 24.70% |
General partner | Incentive Distribution Rights | Third Target Distribution | Minimum |  |
Partners' Capital |  |
Quarterly distribution per unit (in dollars per share) | $ 0.5313 |
General partner | Incentive Distribution Rights | Third Target Distribution | Maximum |  |
Partners' Capital |  |
Quarterly distribution per unit (in dollars per share) | $ 0.6375 |
General partner | Incentive Distribution Rights | Thereafter |  |
Partners' Capital |  |
Marginal percentage interest in distributions | 49.70% |
General partner | Incentive Distribution Rights | Thereafter | Minimum |  |
Partners' Capital |  |
Quarterly distribution per unit (in dollars per share) | $ 0.6375 |

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- Definition Represents the marginal percentage of interest on distributions. + References No definition available. + Details
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- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or 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 + Details
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- Definition The distribution amount per share for all classes of units. + 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 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
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