Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Apr. 05, 2015	Mar. 30, 2014	Dec. 31, 2014
Tax Credit Carryforward [Line Items]
Unrecognized Tax Benefits, Increase/Decrease Resulting from Prior Period Tax Positions	$ 364,000
Effective Income Tax Rate Continuing Operations	19.00%
Provision for effective tax rate	18.00%	19.00%
Increase (decrease) in liabilities, net of deferred tax benefit, for uncertain tax positions	211,000
APIC portion of Decrease In Liability Net Of Deferred Tax Benefit For Uncertain Tax Positions	48,000
tax expense portion of Decrease in Liability Net of Deferred Tax Benefit for Uncertain Tax Positions	163,000
Increase (decrease) in interest and penalties	15,000
Unrecognized tax benefit shown as a reduction to noncurrent deferred tax assets			1,028,000
Liability For Uncertain Tax Positions	5,400,000
Reserve for income taxes, total	4,372,000		4,623,000
Interest and penalties, gross	494,000
Reserve for income taxes to be recorded in additional paid in capital	616,000
Minimum decrease in income tax expense due to release in reserves	550,000
Maximum decrease in income tax expense due to release in reserves	$ 650,000
Tax years open to examination by Internal Revenue Service	2012 through 2014
Tax years open to examination by various taxing authorities	2011 through 2014
Tax years open to examination by various taxing authorities for other entities	2010 through 2014