Consolidated Statements Of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 25, 2012	Dec. 27, 2011
Cash flows from operating activities:
Net income	$ 12,212,000	$ 13,754,000	$ 8,973,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,300,000	8,809,000	7,146,000
Loss on disposal of restaurant property	55,000	103,000
Write-off of goodwill associated with disposed restaurant property	0	738,000
Write-off of debt issuance costs		1,649,000	2,501,000
Loan cost amortization	14,000	222,000	627,000
Non-cash equity based compensation	1,689,000	378,000	101,000
Non-cash impairment charges			1,400,000
Non-cash impairment charges	2,360,000
Deferred income taxes	3,677,000	(1,608,000)	(1,623,000)
Amortization of deferred lease incentives	(546,000)	(285,000)	(172,000)
Changes in operating assets and liabilities:
Restricted cash		761,000	(976,000)
Inventories	(1,991,000)	(2,212,000)	(1,230,000)
Lease incentives receivable	2,889,000	2,902,000
Other assets	(2,162,000)	(2,146,000)	(550,000)
Accounts payable	(945,000)	1,313,000	4,358,000
Income taxes	(3,767,000)	1,840,000	2,492,000
Deferred rent obligations	1,344,000	1,343,000	829,000
Other liabilities	3,263,000	3,407,000	4,627,000
Net cash provided by operating activities	29,392,000	30,968,000	28,503,000
Cash flows from investing activities:
Proceeds from sale-leaseback transaction			13,235,000
Proceeds from sale of property and equipment	5,000	1,682,000
Purchases of property and equipment	(31,326,000)	(33,635,000)	(20,063,000)
Other	(141,000)	(220,000)	(323,000)
Net cash used in investing activities	(31,462,000)	(32,173,000)	(7,151,000)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of underwriter fees and issuance costs		66,457,000
Proceeds from long-term debt			71,800,000
Payments of long-term debt		(70,000,000)	(80,722,000)
Deferred debt issuance costs		(48,000)	(2,111,000)
Purchase of treasury stock	(3,681,000)
Proceeds from exercise of stock options	428,000
Contribution from (distribution to) shareholder	8,234,000	1,440,000	(357,000)
Net cash provided by (used in) financing activities	4,981,000	(2,151,000)	(11,390,000)
Net increase (decrease) in cash and cash equivalents	2,911,000	(3,356,000)	9,962,000
Cash and cash equivalents at beginning of period	10,763,000	14,119,000	4,157,000
Cash and cash equivalents at end of period	13,674,000	10,763,000	14,119,000
Supplemental disclosures of cash flow information:
Cash paid for interest	65,000	3,127,000	5,567,000
Cash paid for income taxes	5,361,000	5,283,000	3,279,000
Noncash investing and financing activities:
Deemed distribution to parent			$ 477,000