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Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 26, 2015 | Sep. 26, 2015 | Jun. 27, 2015 | Mar. 28, 2015 | Dec. 27, 2014 | Sep. 27, 2014 | Jun. 28, 2014 | Mar. 29, 2014 | Dec. 26, 2015 | Dec. 27, 2014 | Dec. 28, 2013
Quarterly Financial Information (Unaudited) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales | [1] | $ 471,983 |  | $ 535,184 |  | $ 555,593 |  | $ 537,242 |  | $ 537,342 |  | $ 602,820 |  | $ 649,691 |  | $ 574,374 |  |  |  |
Gross profit | [1],[2] | 60,647 |  | 68,017 |  | 85,228 |  | 76,408 |  | 68,453 |  | 81,542 |  | 91,916 |  | 78,597 |  |  |  |
Consolidated net income |  | 14,110 | [3] | 18,095 | [1],[3],[4] | 33,862 | [1],[3],[5] | 22,340 | [1],[3] | 18,049 | [1],[6],[7] | 24,322 | [1],[7] | 35,209 | [1],[7] | 24,954 | [1],[7] | $ 88,407 | $ 102,534 | $ 173,289
Net income attributable to Mueller Industries, Inc. |  | $ 14,435 | [1] | $ 17,800 | [1] | $ 33,651 | [1] | $ 21,978 | [1] | $ 17,987 | [1] | $ 23,823 | [1] | $ 35,045 | [1] | $ 24,706 | [1] | $ 87,864 | $ 101,560 | $ 172,600
Basic earnings per share (in dollars per share) |  | $ 0.26 | [1] | $ 0.32 | [1] | $ 0.60 | [1] | $ 0.39 | [1] | $ 0.32 | [1] | $ 0.42 | [1] | $ 0.63 | [1] | $ 0.44 | [1] | $ 1.56 | $ 1.81 | $ 3.10
Diluted earnings per share (in dollars per share) |  | 0.25 | [1] | 0.31 | [1] | 0.59 | [1] | 0.39 | [1] | 0.32 | [1] | 0.42 | [1] | 0.62 | [1] | 0.44 | [1] | 1.54 | 1.79 | 3.06
Dividends per share (in dollars per share) |  | $ 0.075 | [1] | $ 0.075 | [1] | $ 0.075 | [1] | $ 0.075 | [1] | $ 0.075 | [1] | $ 0.075 | [1] | $ 0.075 | [1] | $ 0.075 | [1] | $ 0.30 | $ 0.30 | $ 0.25
Gain on sale of assets |  |  |  |  |  | $ 15,400 |  |  |  | $ 4,800 |  |  |  |  |  |  |  | $ 15,376 | $ 6,259 | $ 39,765
Pre-tax charges related to severance |  |  |  |  |  | $ 3,400 |  |  |  | $ 4,200 |  |  |  |  |  |  |  | $ 3,442 | $ 7,296 | $ 0
[1] | The sum of quarterly amounts may not equal the annual amounts reported due to rounding. In addition, the earnings per share amounts are computed independently for each quarter, while the full year is based on the weighted average shares outstanding.
[2] | Gross profit is net sales less cost of goods sold, which excludes depreciation and amortization.
[3] | Includes income earned by Turbotec, acquired during Q2 2015, Sherwood, acquired during Q2 2015, and Great Lakes, acquired during Q3 2015.
[4] | During Q3 2015, the Company recorded a permanent adjustment to a deferred tax liability of $4.2 million.
[5] | Includes $15.4 million pre-tax gain on sale of assets and $3.4 million of pre-tax charges related to severance.
[6] | Includes $4.8 million pre-tax gain on sale of assets and $4.2 million of pre-tax charges related to severance.
[7] | Includes losses incurred by Yorkshire, acquired during Q1 2014.

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