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Goodwill and intangible assets (Tables) | 3 Months Ended
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Mar. 29, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of goodwill | Goodwill:
| Carpet segment |  | Ceramic segment |  | Laminate and Wood segment |  | Total
Balance as of December 31, 2013 |  |  |  |  |  |  |
Goodwill | $ | 199,132 |  |  | 1,459,812 |  |  | 1,404,573 |  |  | 3,063,517 |
Accumulated impairment losses | (199,132 | ) |  | (531,930 | ) |  | (596,363 | ) |  | (1,327,425 | )
| $ | — |  |  | 927,882 |  |  | 808,210 |  |  | 1,736,092 |
Goodwill recognized during the period | $ | — |  |  | (2,497 | ) |  | 2,509 |  |  | 12 |
Currency translation during the period | $ | — |  |  | (12,767 | ) |  | (1,545 | ) |  | (14,312 | )
Balance as of March 29, 2014 |  |  |  |  |  |  |
Goodwill | $ | 199,132 |  |  | 1,444,548 |  |  | 1,405,537 |  |  | 3,049,217 |
Accumulated impairment losses | (199,132 | ) |  | (531,930 | ) |  | (596,363 | ) |  | (1,327,425 | )
| $ | — |  |  | 912,618 |  |  | 809,174 |  |  | 1,721,792 |
Schedule of indefinite life assets not subject to amortization | Intangible assets not subject to amortization:
| Tradenames
Balance as of December 31, 2013 | $ | 700,592 |
Currency translation during the period | (8,376 | )
Balance as of March 29, 2014 | $ | 692,216 |
Schedule of intangible assets subject to amortization | Intangible assets subject to amortization:
Gross carrying amounts: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2013 | $ | 383,359 |  |  | 307,186 |  |  | 1,501 |  |  | 692,046 |
Currency translation during the period | (646 | ) |  | (1,112 | ) |  | 3 |  |  | (1,755 | )
Balance as of March 29, 2014 | $ | 382,713 |  |  | 306,074 |  |  | 1,504 |  |  | 690,291 |
Accumulated amortization: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2013 | $ | 342,361 |  |  | 238,115 |  |  | 560 |  |  | 581,036 |
Amortization during the period | 1,606 |  |  | 4,401 |  |  | 31 |  |  | 6,038 |
Currency translation during the period | (624 | ) |  | (840 | ) |  | 1 |  |  | (1,463 | )
Balance as of March 29, 2014 | $ | 343,343 |  |  | 241,676 |  |  | 592 |  |  | 585,611 |
Intangible assets subject to amortization, net | $ | 39,370 |  |  | 64,398 |  |  | 912 |  |  | 104,680 |
Schedule of intangible assets amortization expense |
| Three Months Ended
| March 29, 2014 |  | March 30, 2013
Amortization expense | $ | 6,038 |  |  | 5,974 |

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