Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Cash flows from operating activities:
Net income	$ 82,511	$ 75,584	$ 68,291
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	44,153	53,185	48,567
Amortization	6,498	6,198	6,491
Gain on disposition of fixed assets	(1,407)	(576)	(1,023)
Gain on sale of marketable securities	(713)	(1,447)	(223)
Gain on acquisition of business	(414)	0	0
Changes in operating assets and liabilities:
Inventories	(17,936)	4,830	(8,006)
Accounts receivable and prepaid expenses	(2,569)	(1,664)	(1,272)
Income taxes recoverable	1,226	1,486	(2,712)
Accounts payable and other liabilities	(5,045)	2,119	297
Income taxes payable	1,359	0	(484)
Deferred income taxes	15,611	16,723	38,195
Other	687	(4,029)	(1,379)
Net cash provided by operating activities	123,961	152,409	146,742
Cash flows from investing activities:
Purchase of property and equipment	(109,774)	(110,517)	(69,869)
Proceeds from the sale of property and equipment	2,542	2,097	2,013
Purchase of marketable securities	(13,790)	(81,885)	(12,245)
Proceeds from maturities of marketable securities	0	8,620	6,296
Proceeds from the sale of marketable securities	19,941	16,019	341
Acquisition of business	(6,116)	0	0
Purchase of intangible assets	(439)	(121)	0
Net cash used in investing activities	(107,636)	(165,787)	(73,464)
Cash flows from financing activities:
Dividends paid	(32,278)	(58,370)	(31,201)
Purchase of treasury stock	0	0	(2)
Net cash used in financing activities	(32,278)	(58,370)	(31,203)
Net (decrease) increase in cash and cash equivalents	(15,953)	(71,748)	42,075
Cash and cash equivalents at beginning of year	37,392	109,140	67,065
Cash and cash equivalents at end of year	$ 21,439	$ 37,392	$ 109,140