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Goodwill and intangible assets (Tables) | 6 Months Ended
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Jun. 29, 2013
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of goodwill | Goodwill:
| Carpet segment |  | Ceramic segment |  | Laminate and Wood segment |  | Total
Balance as of December 31, 2012 |  |  |  |  |  |  |
Goodwill | $ | 199,132 |  |  | 1,186,913 |  |  | 1,327,151 |  |  | 2,713,196 |
Accumulated impairment losses | (199,132 | ) |  | (531,930 | ) |  | (596,363 | ) |  | (1,327,425 | )
| $ | — |  |  | 654,983 |  |  | 730,788 |  |  | 1,385,771 |
Goodwill acquired during the period | $ | — |  |  | 262,613 |  |  | 60,358 |  |  | 322,971 |
Currency translation during the period | $ | — |  |  | (6,772 | ) |  | (11,348 | ) |  | (18,120 | )
Balance as of June 29, 2013 |  |  |  |  |  |  |
Goodwill | $ | 199,132 |  |  | 1,442,754 |  |  | 1,376,161 |  |  | 3,018,047 |
Accumulated impairment losses | (199,132 | ) |  | (531,930 | ) |  | (596,363 | ) |  | (1,327,425 | )
| $ | — |  |  | 910,824 |  |  | 779,798 |  |  | 1,690,622 |
Schedule of indefinite life assets not subject to amortization | Intangible assets:
Indefinite life assets not subject to amortization: | Tradenames
Balance as of December 31, 2012 | $ | 455,503 |
Intangible assets acquired during the period | 232,191 |
Currency translation during the period | (7,587 | )
Balance as of June 29, 2013 | $ | 680,107 |
Schedule of intangible assets subject to amortization |
Intangible assets subject to amortization: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2012 | $ | 26,210 |  |  | 71,031 |  |  | 1,055 |  |  | 98,296 |
Intangible assets acquired during the period | 21,792 |  |  | 15,188 |  |  | — |  |  | 36,980 |
Amortization during the period | (3,147 | ) |  | (9,541 | ) |  | (60 | ) |  | (12,748 | )
Currency translation during the period | (310 | ) |  | (1,548 | ) |  | (248 | ) |  | (2,106 | )
Balance as of June 29, 2013 | $ | 44,545 |  |  | 75,130 |  |  | 747 |  |  | 120,422 |
Schedule of intangible assets amortization expense |
| Three Months Ended |  | Six Months Ended
| June 29, 2013 |  | June 30, 2012 |  | June 29, 2013 |  | June 30, 2012
Amortization expense | $ | 6,774 |  |  | 15,998 |  |  | 12,748 |  |  | 32,259 |

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