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