CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
OPERATING ACTIVITIES
NET INCOME (LOSS)	$ 131	$ (110)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	325	369
Amortization of finite-lived intangible assets	38	32
Gain on disposal of assets		(36)
Stock-based compensation	15	(13)
Deferred income tax provision	18	0
Changes in operating assets and liabilities:
Decrease (increase) in accounts receivable, net	439	(531)
(Increase) decrease in inventories, net	(444)	69
(Increase) decrease in prepaid expenses and other assets	(23)	14
(Decrease) increase in accounts payable, accrued compensation and commissions and other accrued liabilities	(89)	249
Net cash provided by operating activities	410	43
INVESTING ACTIVITIES
Purchase of marketable securities	(1,002)	0
Capital expenditures	(28)	(76)
Other	0	43
Net cash used in investing activities	(1,030)	(33)
(Decrease) increase in cash and cash equivalents	(620)	10
Cash and cash equivalents at beginning of period	2,778	5,553
Cash and cash equivalents at end of period	2,158	5,563
Supplemental Disclosure:
Cash paid for interest	17	6
Cash paid for income taxes	$ 20	$ 27