Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net loss	$ (31)	$ (803)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	119	137
Loss on disposal of assets	5	15
Provision for inventory obsolescence	233	424
Recovery of bad debts and returns	(7)	(23)
Share based compensation	413	2
Changes in operating assets and liabilities:
Accounts receivable	137	(79)
Inventories	45	468
Prepaid expenses and other current assets	2	(23)
Accounts payable	14	(51)
Accrued payroll and related liabilities	(16)	(148)
Deferred service revenue	60	(586)
Other accrued liabilities	8	382
Total adjustments	1,013	518
Net cash provided by (used in) operating activities	982	(285)
Cash flows from investing activities:
Purchases of equipment	(10)	(27)
Net cash used in investing activities	(10)	(27)
Net increase (decrease) in cash, restricted cash and cash equivalents	972	(312)
Cash, restricted cash and cash equivalents at beginning of period	3,791	3,963
Cash, restricted cash and cash equivalents at end of period	4,763	3,651
Supplemental cash flow disclosures:
Income taxes paid	$ 3	$ 8