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Net Income Allocation and Per Unit Data (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2014 | Mar. 31, 2014 | Dec. 30, 2013 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2011
Basic and Diluted Earnings Per Limited Partner: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | $ (9,592) |  | $ 52,200 | $ 19,300 | $ (7,588) |  | $ 61,912 |  | $ 43,843 |  | $ 29,900 | $ 26,000 | $ 24,300
Less General partner's interest in net income (loss) | (54) |  |  |  | (41) |  | 349 |  | 237 |  |  |  |
Net income (loss) available to limited partners | (9,538) |  |  |  | (7,547) |  | 61,563 |  | 43,606 |  |  |  |
Less dilutive impact of theoretical distribution of earnings under FASB ASC 260-10-45-60 |  |  |  |  |  |  | 9,152 |  | 5,623 |  |  |  |
Limited Partner's interest in net income (loss) under FASB ASC 260-10-45-60 | $ (9,538) |  |  |  | $ (7,547) |  | $ 52,411 |  | $ 37,983 |  |  |  |
Per unit data: |  |  |  |  |  |  |  |  |  |  |  |  |
Basic and diluted net income (loss) available to limited partners | (0.17) |  |  |  | (0.13) |  | 1.07 |  | 0.73 |  |  |  |
Less dilutive impact of theoretical distribution of earnings under FASB ASC 260-10-45-60 |  |  |  |  |  |  | 0.16 |  | 0.10 |  |  |  |
Limited Partner's interest in net income (loss) under FASB ASC 260-10-45-60 | $ (0.17) | [1] |  |  | $ (0.13) | [1] | $ 0.91 | [1] | $ 0.63 | [1] |  |  |
Weighted average number of Limited Partner units outstanding | 57,468 |  |  |  | 59,370 |  | 57,482 |  | 59,918 |  |  |  |
[1] | See Note 14 Earnings (Loss) Per Limited Partner Unit.

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