Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Dec. 31, 2013
Tax Credit Carryforward [Line Items]
Provision for effective tax rate	19.00%	16.00%
Increase (decrease) in liabilities, net of deferred tax benefit, for uncertain tax positions	$ 175
Increase (decrease) in interest and penalties	40
Unrecognized tax benefit shown as a reduction to noncurrent deferred tax assets	1,028
Liability For Uncertain Tax Positions	4,967
Reserve for income taxes, total	3,939		4,765
Interest and penalties, gross	415
Reserve for income taxes to be recorded in additional paid in capital	451
Minimum decrease in income tax expense due to release in reserves	700
Maximum decrease in income tax expense due to release in reserves	800
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 [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward		$ 555