Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jul. 01, 2015	Jun. 25, 2014
Cash flows from operating activities:
Net income	$ 14,021,000	$ 12,039,000
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	6,346,000	5,347,000
Stock-based compensation expense	443,000	337,000
Interest accretion		185,000
Income tax receivable agreement expense	477,000
Loss on disposal of assets	166,000	455,000
Impairment of property and equipment	13,000	36,000
Close-store reserve	(152,000)	357,000
Amortization of deferred financing costs	152,000	779,000
Amortization of favorable and unfavorable leases, net	(93,000)	(111,000)
Deferred income taxes, net	9,775,000	819,000
Changes in operating assets and liabilities:
Accounts and other receivables, net	24,000	258,000
Inventories	225,000	(10,000)
Prepaid expenses and other current assets	312,000	(1,095,000)
Income taxes receivable	(30,000)	7,000
Other assets	84,000	468,000
Accounts payable	257,000	1,070,000
Accrued salaries and vacation	(1,814,000)	(622,000)
Accrued insurance	757,000	804,000
Other accrued expenses and liabilities	(1,146,000)	468,000
Net cash flows provided by operating activities	29,817,000	21,591,000
Cash flows from investing activities:
Purchase of property and equipment	(8,869,000)	(10,391,000)
Net cash flows used in investing activities	(8,869,000)	(10,391,000)
Cash flows from financing activities:
Payments on senior secured loan		(950,000)
Proceeds from exercise of stock options	4,069,000
Payments on revolver	(30,000,000)
Payment of obligations under capital leases	(102,000)	(131,000)
Net cash flows used in financing activities	(26,033,000)	(1,081,000)
(Decrease) Increase in cash and cash equivalents	(5,085,000)	10,119,000
Cash and cash equivalents, beginning of period	11,499,000	17,015,000
Cash and cash equivalents, end of period	6,414,000	27,134,000
Supplemental cash flow information
Cash paid during the period for interest	1,923,000	10,058,000
Cash paid during the period for income taxes, net	30,000	(161,000)
Unpaid purchases of property and equipment	1,371,000	2,035,000
Cashless stock option exercise	$ (34,000)	$ (27,000)