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Industry Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 26, 2015 | Sep. 27, 2014 | Sep. 26, 2015 | Sep. 27, 2014
Industry Segments [Abstract] |  |  |  |
Decrease in accruals related to import duties included in cost of goods sold |  |  |  | $ (3,100)
Summary of segment information [Abstract] |  |  |  |
Net sales | $ 535,184 | $ 602,820 | $ 1,628,019 | 1,826,885
Cost of goods sold | 467,167 | 521,278 | 1,398,366 | 1,574,830
Depreciation and amortization | 8,749 | 8,952 | 24,790 | 25,651
Selling, general, and administrative expense | 32,241 | 34,004 | 98,492 | 100,512
Gain on sale of assets | 0 | 0 | (15,376) | (1,417)
Severance | 0 | 860 | 3,442 | 3,072
Operating income | 27,027 | 37,726 | 118,305 | 124,237
Interest expense | (1,682) | (1,430) | (5,977) | (3,913)
Other income, net | 164 | 225 | 534 | 440
Income before income taxes | 25,509 | 36,521 | 112,862 | 120,764
Corporate and Eliminations [Member] |  |  |  |
Summary of segment information [Abstract] |  |  |  |
Net sales | (2,434) | (2,906) | (7,649) | (9,497)
Cost of goods sold | (2,389) | (2,874) | (7,530) | (9,398)
Depreciation and amortization | 442 | 517 | 1,395 | 1,725
Selling, general, and administrative expense | 5,323 | 5,858 | 17,841 | 18,789
Gain on sale of assets |  |  | 0 | 0
Severance |  | 0 | 0 | 0
Operating income | (5,810) | (6,407) | (19,355) | (20,613)
Plumbing and Refrigeration Segment [Member] | Operating Segments [Member] |  |  |  |
Summary of segment information [Abstract] |  |  |  |
Net sales | 325,022 | 357,843 | 957,375 | 1,093,060
Cost of goods sold | 280,891 | 308,927 | 819,591 | 934,208
Depreciation and amortization | 4,468 | 5,287 | 13,568 | 14,803
Selling, general, and administrative expense | 20,104 | 22,613 | 61,117 | 66,023
Gain on sale of assets |  |  | (15,376) | (1,417)
Severance |  | 860 | 3,442 | 3,072
Operating income | 19,559 | 20,156 | 75,033 | 76,371
OEM Segment [Member] | Operating Segments [Member] |  |  |  |
Summary of segment information [Abstract] |  |  |  |
Net sales | 212,596 | 247,883 | 678,293 | 743,322
Cost of goods sold | 188,665 | 215,225 | 586,305 | 650,020
Depreciation and amortization | 3,839 | 3,148 | 9,827 | 9,123
Selling, general, and administrative expense | 6,814 | 5,533 | 19,534 | 15,700
Gain on sale of assets |  |  | 0 | 0
Severance |  | 0 | 0 | 0
Operating income | $ 13,278 | $ 23,977 | $ 62,627 | $ 68,479

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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=51677171&loc=d3e3636-108311 + Details
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