Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 24, 2015	Mar. 25, 2014
Cash flows from operating activities:
Net income	$ 5,394	$ 4,522
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,577	2,955
Loss on disposal of restaurant property	3	17
Loan cost amortization	4	4
Non-cash equity based compensation	580	573
Deferred income taxes	(302)	(340)
Amortization of deferred lease incentives	(238)	(176)
Changes in operating assets and liabilities:
Inventories	870	402
Lease incentives receivable	780	772
Other assets	160	781
Accounts payable	1,117	221
Income taxes	1,124	1,498
Deferred rent obligations	397	405
Other liabilities	(2,956)	(3,190)
Net cash provided by operating activities	10,510	8,444
Cash flows from investing activities:
Proceeds from sale of property and equipment	1	8
Purchases of property and equipment	(7,194)	(5,787)
Other	(2)	(89)
Net cash used in investing activities	(7,195)	(5,868)
Cash flows from financing activities:
Proceeds from exercise of stock options		48
Net cash provided by financing activities		48
Net increase in cash and cash equivalents	3,315	2,624
Cash and cash equivalents at beginning of period	3,520	13,674
Cash and cash equivalents at end of period	6,835	16,298
Supplemental disclosures of cash flow information:
Cash paid for interest	15	12
Cash paid for income taxes	1,487	1,053
Capital expenditures included in accounts payable	$ 1,954	$ 1,261