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Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 29, 2014 | Jun. 30, 2013 | Jun. 29, 2014 | Jun. 30, 2013 | Dec. 31, 2013
Tax Credit Carryforward [Line Items] |  |  |  |  |
Income Tax Examination, Increase (Decrease) in Liability from Prior Year | $ 553 |  | $ 553 |  |
Increase (decrease) in liability for release of tax reserve |  |  | 296 |  |
Effective Income Tax Rate Continuing Operations | 19.00% |  |  | 19.00% |
Provision for effective tax rate | 17.00% | 19.00% | 18.00% | 18.00% |
Increase (decrease) in liabilities, net of deferred tax benefit, for uncertain tax positions | (136) |  | 39 |  |
Increase (decrease) in interest and penalties | 20 |  | 60 |  |
Unrecognized tax benefit shown as a reduction to noncurrent deferred tax assets | 1,028 |  | 1,028 |  |
Liability For Uncertain Tax Positions | 4,831 |  | 4,831 |  |
Reserve for income taxes, total | 3,803 |  | 3,803 |  | 4,765
Interest and penalties, gross | 441 |  | 441 |  |
Reserve for income taxes to be recorded in additional paid in capital |  |  | 451 |  |
Minimum decrease in income tax expense due to release in reserves |  |  | 500 |  |
Maximum decrease in income tax expense due to release in reserves |  |  | 600 |  |
Tax years open to examination by various taxing authorities |  |  | 2012 through 2013 |  |
Tax years open to examination by various taxing authorities for other entities |  |  | 2009 through 2013 |  |
Research and Development Tax Credit |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |
Tax credit carryforward |  | $ 555 |  | $ 555 |

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