Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 1,518	$ 1,643
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	395	438
Provision for excess and obsolete inventory	110	138
Foreign exchange loss	13	1
Amortization of deferred compensation related to restricted stock	61	74
Loss on sale of property and equipment	13	20
Proceeds from sale of demonstration equipment, net of gain	146	65
Deferred income tax expense	171	90
Changes in assets and liabilities:
Trade accounts receivable	(2,390)	(1,999)
Inventories	(377)	(768)
Prepaid expenses and other current assets	195	110
Other assets	(7)	(1)
Accounts payable	480	649
Accrued wages and benefits	22	(191)
Accrued rent	(23)	16
Accrued professional fees	4	(38)
Accrued sales commissions	92	127
Domestic and foreign income taxes payable	221	534
Other current liabilities	209	112
Net cash provided by operating activities	853	1,020
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	(385)	(424)
Proceeds from sale of property and equipment		8
Net cash used in investing activities	(385)	(416)
Effects of exchange rates on cash	(128)	(6)
Net cash provided by all activities	340	598
Cash and cash equivalents at beginning of period	23,126	19,018
Cash and cash equivalents at end of period	23,466	19,616
Cash payments for:
Domestic and foreign income taxes	$ 419	199
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)