Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net (loss) income	$ (657)	$ 2,227
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	796	818
Stock-based compensation	149	227
Deferred income taxes	(322)	150
Gain on sale of equipment	(110)
Impairment of property and equipment	342
Change in operating assets and liabilities:
Accounts receivable	352	57
Inventories	282	970
Prepaid expenses and other assets	178	(283)
Income taxes receivable	(197)	(874)
Accounts payable and accrued expenses	(134)	(199)
Total adjustments to net (loss) income	1,336	866
Net cash provided by operating activities	679	3,093
Cash flows from investing activities:
Purchase of internal-use software	(286)
Acquisition	(5,583)
Purchase of property and equipment	(101)	(222)
Proceeds from sale of equipment	110
Net cash used in investing activities	(5,860)	(222)
Cash flows from financing activities:
Repayments of long-term debt		(1,200)
Proceeds from revolving credit facility	4,000
Repayments of revolving credit facility	(4,000)
Proceeds from exercise of stock options	43	447
Net cash provided (used) by financing activities	43	(753)
Net (decrease) increase in cash and cash equivalents	(5,138)	2,118
Cash and cash equivalents, beginning of period	6,232	4,114
Cash and cash equivalents, end of period	1,094	6,232
Supplemental disclosures:
Cash paid during the period for interest	$ 22	44
Cash paid during the period for income taxes		$ 1,342