Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 81	$ 438
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation and amortization	160	200
Provision for excess and obsolete inventory	69	51
Foreign exchange (gain) loss	(10)	19
Amortization of deferred compensation related to restricted stock	39	30
Proceeds from sale of demonstration equipment, net of gain	47	16
Deferred income tax expense (benefit)	25	(8)
Changes in assets and liabilities:
Trade accounts receivable	(907)	(1,484)
Inventories	7	(475)
Prepaid expenses and other current assets	29	50
Other assets	(7)	(7)
Accounts payable	456	676
Accrued wages and benefits	(299)	(170)
Accrued rent	$ (51)	(19)
Accrued professional fees		142
Accrued sales commissions	$ 19	40
Other current liabilities	23	238
Net cash used in operating activities	(319)	(263)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	(38)	(179)
Net cash used in investing activities	(38)	$ (179)
CASH FLOWS FROM FINANCING ACTIVITIES
Repurchases of common stock	(471)
Net cash used in financing activities	(471)
Effects of exchange rates on cash	69	$ (199)
Net cash used in all activities	(759)	(641)
Cash and cash equivalents at beginning of period	25,710	23,126
Cash and cash equivalents at end of period	24,951	22,485
Cash payments for:
Domestic and foreign income taxes	$ 2	$ 124