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Industry Segments (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 28, 2013 | Sep. 29, 2012 | Sep. 28, 2013 | Sep. 29, 2012
Summary of segment information [Abstract] |  |  |  |
Net sales | $ 528,854 | $ 514,165 | $ 1,670,826 | $ 1,685,932
Cost of goods sold | 456,302 | 449,718 | 1,440,277 | 1,465,744
Depreciation and amortization | 7,882 | 7,870 | 24,364 | 23,318
Selling, general, and administrative expense | 32,921 | 32,120 | 99,078 | 97,209
Gain on sale of plastics fittings manufacturing assets | (39,765) | 0 | (39,765) | 0
Impairment charges | 4,304 | 0 | 4,304 | 0
Insurance settlement | 0 | 0 | (106,332) | (1,500)
Operating income | 67,210 | 24,457 | 248,900 | 101,161
Interest expense | (1,243) | (353) | (2,940) | (5,711)
Other income (expense,) net | 842 | 219 | 4,324 | 963
Income before income taxes | 66,809 | 24,323 | 250,284 | 96,413
Plumbing and Refrigeration Segment [Member] |  |  |  |
Summary of segment information [Abstract] |  |  |  |
Net sales | 301,622 | 297,913 | 942,109 | 944,955
Cost of goods sold | 258,035 | 257,978 | 800,782 | 808,631
Depreciation and amortization | 4,172 | 4,044 | 12,861 | 12,340
Selling, general, and administrative expense | 20,736 | 18,298 | 61,245 | 57,028
Gain on sale of plastics fittings manufacturing assets | (39,765) |  | (39,765) |
Impairment charges | 4,173 |  | 4,173 |
Insurance settlement |  |  | (103,895) | (1,500)
Operating income | 54,271 | 17,593 | 206,708 | 68,456
OEM Segment [Member] |  |  |  |
Summary of segment information [Abstract] |  |  |  |
Net sales | 230,396 | 221,468 | 741,227 | 760,995
Cost of goods sold | 201,399 | 196,789 | 651,875 | 676,635
Depreciation and amortization | 3,150 | 3,437 | 9,854 | 9,908
Selling, general, and administrative expense | 5,779 | 6,821 | 18,168 | 20,249
Gain on sale of plastics fittings manufacturing assets | 0 |  | 0 |
Impairment charges | 131 |  | 131 |
Insurance settlement |  |  | 0 | 0
Operating income | 19,937 | 14,421 | 61,199 | 54,203
Corporate and Eliminations [Member] |  |  |  |
Summary of segment information [Abstract] |  |  |  |
Net sales | (3,164) | (5,216) | (12,510) | (20,018)
Cost of goods sold | (3,132) | (5,049) | (12,380) | (19,522)
Depreciation and amortization | 560 | 389 | 1,649 | 1,070
Selling, general, and administrative expense | 6,406 | 7,001 | 19,665 | 19,932
Gain on sale of plastics fittings manufacturing assets | 0 |  | 0 |
Impairment charges | 0 |  | 0 |
Insurance settlement |  |  | (2,437) | 0
Operating income | $ (6,998) | $ (7,557) | $ (19,007) | $ (21,498)

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