Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2017	Mar. 30, 2016
Cash flows from operating activities:
Net income	$ 4,877	$ 5,443
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	4,317	3,758
Stock-based compensation expense	141	11
Fire insurance proceeds for expenses paid and lost profit	0	130
Income tax receivable agreement expense	227	264
Loss on disposal of assets	225	199
Expenses related to fire loss	0	48
Gain on recovery of insurance proceeds for property, equipment and expenses	0	(289)
Impairment of property and equipment	22	35
Closed-store reserve	849	39
Amortization of deferred financing costs	76	76
Amortization of favorable and unfavorable leases, net	(26)	(26)
Excess income tax benefit related to share-based compensation plans	0	29
Deferred income taxes, net	3,400	3,701
Changes in operating assets and liabilities:
Accounts and other receivables, net	(1,050)	(612)
Inventories	199	88
Prepaid expenses and other current assets	(1,342)	(1,221)
Income taxes payable	(32)	11
Other assets	141	5
Accounts payable	2,694	(4,808)
Accrued salaries and vacation	3,624	1,831
Accrued insurance	141	(50)
Other accrued expenses and liabilities	525	2,341
Restricted cash	125	0
Net cash flows provided by operating activities	19,133	11,003
Cash flows from investing activities:
Fire insurance proceeds for property and equipment	0	270
Purchase of property and equipment	(11,601)	(5,935)
Net cash flows used in investing activities	(11,601)	(5,665)
Cash flows from financing activities:
Payments on revolver loan	(3,000)	(2,500)
Payment of obligations under capital leases	(48)	(46)
Excess income tax benefit related to share-based compensation plans	0	(29)
Net cash flows used in financing activities	(3,048)	(2,575)
Increase in cash and cash equivalents	4,484	2,763
Cash and cash equivalents, beginning of period	2,168	6,101
Cash and cash equivalents, end of period	6,652	8,864
Supplemental cash flow information
Cash paid during the period for interest	821	781
Cash paid during the period for income taxes	100	50
Unpaid purchases of property and equipment	$ 3,161	$ 2,548