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Statements of Partners' Capital (USD $) In Thousands, except Share data | Total | Common Units | Holders of Incentive Distribution Rights | Non-Controlling Interest | Accumulated Other Comprehensive Income (Loss) | General Partner
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2008 | $ 743,341 | $ 719,341 | $ 11,069 | $ 0 | $ (648) | $ 13,579
Beginning Balance, shares at Dec. 31, 2008 |  | 64,891,136 |  |  |  |
Distributions | (188,135) | (144,766) | (39,607) |  |  | (3,762)
Issuance of units for acquisitions, net | 95,889 | 93,908 |  |  |  | 1,981
Issuance of units for acquisitions, net, shares |  | 4,560,000 |  |  |  |
Net income | 114,080 | 78,954 | 33,515 |  |  | 1,611
Loss on interest hedge | 51 |  |  |  | 51 |
Comprehensive income | 114,131 |  |  |  | 51 |
Ending Balance at Dec. 31, 2009 | 765,226 | 747,437 | 4,977 | 0 | (597) | 13,409
Ending Balance, shares at Dec. 31, 2009 |  | 69,451,136 |  |  |  |
Distributions | (209,849) | (174,709) | (30,943) |  |  | (4,197)
Issuance of units for acquisitions, net | 110,217 | 110,217 |  |  |  |
Issuance of units for acquisitions, net, shares |  | 36,576,700 |  |  |  |
Capital contribution | 2,350 |  |  |  |  | 2,350
Fees associated with elimination of IDRs | (2,341) | (2,341) |  |  |  |
Non-controlling interest | 5,065 |  |  | 5,065 |  |
Net income | 154,461 | 125,925 | 25,966 |  |  | 2,570
Loss on interest hedge | 51 |  |  |  | 51 |
Comprehensive income | 154,512 |  |  |  | 51 |
Ending Balance at Dec. 31, 2010 | 825,180 | 806,529 | 0 | 5,065 | (546) | 14,132
Ending Balance, shares at Dec. 31, 2010 |  | 106,027,836 |  |  |  |
Distributions | (234,828) | (230,080) |  | (52) |  | (4,696)
Non-controlling interest adjustment | (373) |  |  | (373) |  |
Costs associated with equity transactions | (141) | (141) |  |  |  |
Non-controlling interest | 998 |  |  | (998) |  |
Net income | 54,026 | 52,945 |  |  |  | 1,081
Loss on interest hedge | 53 |  |  |  | 53 |
Comprehensive income | 55,077 |  |  |  | 53 |
Ending Balance at Dec. 31, 2011 | $ 644,915 | $ 629,253 | $ 0 | $ 5,638 | $ (493) | $ 10,517
Ending Balance, shares at Dec. 31, 2011 |  | 106,027,836 |  |  |  |

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- Definition Change in the number of units for each class of partners' capital accounts during the year due to acquisitions. Partners include general, limited and preferred partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section S99 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6949532&loc=d3e341768-161536 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 30 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6912049&loc=d3e9337-128500 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6912049&loc=d3e9298-128500 Reference 5: 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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 15 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6911908&loc=d3e8867-128494 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 05 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911788&loc=d3e8580-128490 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 Reference 10: 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 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6912049&loc=d3e9334-128500 + Details
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