Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 1,828	$ 2,480
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	575	663
Provision for excess and obsolete inventory	232	232
Foreign exchange loss	21	24
Amortization of deferred compensation related to restricted stock	91	104
Loss on sale of property and equipment	13	20
Proceeds from sale of demonstration equipment, net of gain	208	112
Deferred income tax expense	169	282
Changes in assets and liabilities:
Trade accounts receivable	(553)	(1,879)
Inventories	(282)	(791)
Prepaid expenses and other current assets	$ 67	(45)
Other assets		2
Accounts payable	$ 312	491
Accrued wages and benefits	101	(42)
Accrued rent	(10)	27
Accrued professional fees	(11)	(3)
Accrued sales commissions	26	116
Domestic and foreign income taxes payable	(10)	(51)
Other current liabilities	142	45
Net cash provided by operating activities	2,919	1,787
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	$ (545)	(536)
Proceeds from sale of property and equipment		8
Net cash used in investing activities	$ (545)	(528)
Effects of exchange rates on cash	(117)	(130)
Net cash provided by all activities	2,257	1,129
Cash and cash equivalents at beginning of period	23,126	19,018
Cash and cash equivalents at end of period	25,383	20,147
Cash payments for:
Domestic and foreign income taxes	$ 749	1,023
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Issuance of unvested shares of restricted stock		41
Forfeiture of unvested shares of restricted stock		$ (20)