Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
	Mar. 25, 2014	Mar. 19, 2013
Cash flows from operating activities:
Net income	$ 4,522,000	$ 3,569,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,955,000	2,442,000
Loss on disposal of restaurant property	17,000
Loan cost amortization	4,000	4,000
Non-cash equity based compensation	573,000	228,000
Deferred income taxes	(340,000)	2,618,000
Amortization of deferred lease incentives	(176,000)	(107,000)
Changes in operating assets and liabilities:
Inventories	402,000	(22,000)
Lease incentives receivable	772,000	1,030,000
Other assets	781,000	1,235,000
Accounts payable	221,000	(3,604,000)
Income taxes	1,498,000	(2,098,000)
Deferred rent obligations	405,000	289,000
Other liabilities	(3,190,000)	(1,302,000)
Net cash provided by operating activities	8,444,000	4,282,000
Cash flows from investing activities:
Proceeds from sale of property and equipment	8,000
Purchases of property and equipment	(5,787,000)	(5,224,000)
Other	(89,000)	(12,000)
Net cash used in investing activities	(5,868,000)	(5,236,000)
Cash flows from financing activities:
Proceeds from exercise of stock options	48,000
Net cash provided by (used in) financing activities	48,000
Net increase (decrease) in cash and cash equivalents	2,624,000	(954,000)
Cash and cash equivalents at beginning of period	13,674,000	10,763,000
Cash and cash equivalents at end of period	16,298,000	9,809,000
Supplemental disclosures of cash flow information:
Cash paid for interest	12,000	23,000
Cash paid for income taxes	$ 1,053,000	$ 787,000