Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 286	$ 292
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	217	221
Provision for excess and obsolete inventory	35	110
Foreign exchange (gain) loss	(1)	8
Amortization of deferred compensation related to restricted stock	41	27
Proceeds from sale of demonstration equipment, net of gain	8
Deferred income tax expense	20	5
Changes in assets and liabilities:
Trade accounts receivable	(142)	(300)
Inventories	(595)	(395)
Prepaid expenses and other current assets	46	(24)
Other assets	(8)	(2)
Accounts payable	497	358
Accrued wages and benefits	(407)	(385)
Accrued rent	18	15
Accrued professional fees	(38)	21
Accrued sales commissions	(2)	14
Other current liabilities	54	(99)
Net cash provided by (used in) operating activities	29	(134)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	(200)	(44)
Net cash used in investing activitites	(200)	(44)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from stock options exercised		30
Net cash provided by financing activities		30
Effects of exchange rates on cash	6	(44)
Net cash used in all activities	(165)	(192)
Cash and cash equivalents at beginning of period	19,018	15,576
Cash and cash equivalents at end of period	18,853	15,384
Cash payments for:
Domestic and foreign income taxes	134	113
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Issuance of non-vested shares of restricted stock		59
Forfeiture of non-vested shares of restricted stock	$ 20