Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 567	$ 1,518
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	304	395
Provision for excess and obsolete inventory	118	110
Foreign exchange (gain) loss	(10)	13
Amortization of deferred compensation related to stock-based awards	178	61
Loss on sale of property and equipment	3	13
Proceeds from sale of demonstration equipment, net of gain	115	146
Deferred income tax expense	102	171
Changes in assets and liabilities:
Trade accounts receivable	(2,332)	(2,390)
Inventories	90	(377)
Prepaid expenses and other current assets	343	195
Restricted certificates of deposit	125
Other assets	(7)	(7)
Accounts payable	565	480
Accrued wages and benefits	(46)	22
Accrued rent	(79)	(23)
Accrued professional fees	131	4
Accrued sales commissions	93	92
Other current liabilities	(65)	430
Net cash provided by operating activities	195	853
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	(164)	(385)
Net cash used in investing activities	(164)	(385)
CASH FLOWS FROM FINANCING ACTIVITIES
Repurchases of common stock	(770)
Net cash used in financing activities	(770)
Effects of exchange rates on cash	32	(128)
Net cash provided by (used in) all activities	(707)	340
Cash and cash equivalents at beginning of period	25,710	23,126
Cash and cash equivalents at end of period	25,003	23,466
Cash payments for:
Domestic and foreign income taxes	$ 11	$ 419