CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Operating activities
Net loss	$ (1,224)	$ (2,392)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation & amortization	858	1,036
Net amortization (accretion) of investment premiums and discounts	(19)	(16)
Equity-based compensation	672	756
Straight-line rent adjustment and amortization of lease incentives	(74)	(85)
Change in the fair value of acquisition-related contingent consideration	0	7
Deferred income taxes	114	332
Loss on disposal of equipment	0	45
Changes in operating assets and liabilities	786	1,286
Total adjustments	2,337	3,361
Net cash provided by operating activities	1,113	969
Investing activities
Purchase of investments	(4,242)	(5,045)
Proceeds from sales and maturities of investments	5,530	8,396
Purchase of leasehold improvements and equipment	(1,145)	(371)
Net cash provided by investing activities	143	2,980
Financing activities
Proceeds from issuance of common stock	950	1,021
Common stock repurchases	(393)	0
Taxes paid related to net share settlement	(36)	(28)
Payment of acquisition-related contingent consideration	0	(98)
Net cash provided by financing activities	521	895
Effect of exchange rate changes on cash and cash equivalents	(94)	63
Net increase in cash, cash equivalents and restricted cash in cash, cash equivalents and restricted cash	1,683	4,907
Cash, cash equivalents and restricted cash at beginning of period	20,554	19,884
Cash, cash equivalents and restricted cash at end of period	$ 22,237	$ 24,791