Additional Cash Flow Information - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Schedule of Cash Flow, Supplemental [Line Items]
Income taxes paid	$ 1,035,000	$ 2,748,000
Interest paid	760,000	728,000
Acquired operating property by capital leases	$ 8,833,000	$ 8,897,000