Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 1,469	$ (31)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	69	119
Loss on disposal of assets		5
Provision for recovery of bad debts and returns, net	1	(7)
Provision for inventory obsolescence	227	233
Share based compensation		413
Changes in operating assets and liabilities:
Accounts receivable	(245)	137
Inventories	(1,381)	45
Prepaid expenses and other current assets	(75)	2
Accounts payable	17	14
Accrued payroll and related liabilities	153	(16)
Deferred service revenue	(109)	60
Other accrued liabilities	(14)	8
Total adjustments	(1,357)	1,013
Net cash provided by operating activities	112	982
Cash flows from investing activities:
Purchases of equipment	(18)	(10)
Net cash used in investing activities	(18)	(10)
Cash flows from financing activities:
Proceeds from the exercise of stock options	39
Net cash provided by financing activities	39
Net increase in cash, restricted cash and cash equivalents	133	972
Cash, restricted cash and cash equivalents at beginning of period	4,798	3,791
Cash, restricted cash and cash equivalents at end of period	4,931	4,763
Supplemental cash flow disclosures:
Income taxes paid	$ 32	$ 3