Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income	$ 6,787	$ 3,065
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	9,034	8,244
Share-based compensation expense	1,030	3,919
Other, net	(783)	(225)
Changes in assets and liabilities:
Accounts and other receivables	(319)	(177)
Prepaid expenses and other current assets	1,960	1,894
Accounts payable	(1,306)	(188)
Accrued expenses and other current liabilities	(5,980)	(1,249)
Lease right-of-use assets and liabilities	1,242
Other assets and liabilities, net	(911)	(478)
Net cash provided by operating activities	10,754	14,805
Cash flows from investing activities:
Purchase of property and equipment	(7,757)	(15,230)
Other investing activities	(122)	(493)
Net cash used in investing activities	(7,879)	(15,723)
Cash flows from financing activities:
Payments on long-term debt	(3,750)	(3,750)
Other financing activities	(43)
Net cash used in financing activities	(3,793)	(3,750)
Decrease in cash and cash equivalents	(918)	(4,668)
Cash and cash equivalents at beginning of period	8,783	10,711
Cash and cash equivalents at end of period	7,865	6,043
Supplemental disclosures:
Property and equipment obligations accrued at beginning of period	819	1,854
Property and equipment obligations accrued at end of period	2,669	1,656
Cash paid for interest	467	606
Cash paid for income taxes	$ 718	$ 644