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Supplemental Disclosure of Cash Flow Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 03, 2014	Dec. 28, 2012	Dec. 30, 2011
Cash paid during the year:
Income taxes	$ 24,701	$ 24,104	$ 21,669
Non-cash investing and financing activities:
Capital leases for equipment	0	0	142
Unrealized (loss) gain on investments	(14)	(28)	52
Vested stock unit awards granted to settle accrued bonus	5,807	5,343	4,538
Stock repurchases payable to broker	$ 0	$ 508	$ 0

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Vested Restricted Stock Awards Issued to Settle Accrued Bonuses

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The increase during the period in capital lease obligations due to entering into new capital leases.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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The fair value of liabilities assumed in noncash investing or financing activities.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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