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Summary of Quarterly Financial Information (unaudited) (Notes) | 12 Months Ended
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Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract] |
Summary of Quarterly Financial Information (unaudited) | Summary of Quarterly Financial Information (unaudited) The quarterly results of operations of our company and our predecessor for the years ended December 31, 2014 and 2013 are as follows (amounts in thousands):
| March 31, 2014 |  | June 30, 2014 |  | September 30, 2014 |  | December 31, 2014
Revenues | $ | 140,306 |  |  | $ | 155,168 |  |  | $ | 169,441 |  |  | $ | 170,411 |
Operating income | $ | 24,088 |  |  | $ | 42,539 |  |  | $ | 43,412 |  |  | $ | 31,282 |
Net income | $ | 11,231 |  |  | $ | 25,281 |  |  | $ | 22,734 |  |  | $ | 10,964 |
Net income attributable to common unitholders | $ | 11,231 |  |  | $ | 25,281 |  |  | $ | 22,493 |  |  | $ | 10,729 |
Net income per share attributable to common unitholders |  |  |  |  |  |  |
Basic earnings per share | $ | 0.05 |  |  | $ | 0.10 |  |  | $ | 0.09 |  |  | $ | 0.04 |
Diluted earnings per share | $ | 0.05 |  |  | $ | 0.10 |  |  | $ | 0.09 |  |  | $ | 0.04 |
| March 31, 2013 |  | June 30, 2013 |  | September 30, 2013 |  | December 31, 2013 (1)
Revenues | $ | 62,420 |  |  | $ | 59,569 |  |  | $ | 62,278 |  |  | $ | 149,388 |
Net income | $ | 1,930 |  |  | $ | 3,071 |  |  | $ | 2,281 |  |  | $ | 148,917 |
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(1) | The results of operations of our predecessor for October 1, 2013 through October 6, 2013 and the results of operations of our company for October 7, 2013 through December 31, 2013 have been combined.

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- Definition The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=25249566&loc=d3e1280-108306 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section G -Subsection 1 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 302 -Paragraph a + Details
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