Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings (loss)	$ (43)	$ 1,257
Adjustments to reconcile net earnings (loss) to net cash used in operating activities:
Depreciation and amortization	218	104
Foreign exchange gain	(9)	(9)
Amortization of deferred compensation related to restricted stock	27	48
(Gain) loss on sale of property and equipment	3	(40)
Proceeds from sale of demonstration equipment, net of gain	52
Deferred income tax expense (benefit)	(6)	31
Changes in assets and liabilities:
Trade accounts receivable	(574)	(2,576)
Inventories	(37)	(504)
Prepaid expenses and other current assets		133
Other assets	(17)	(5)
Accounts payable	833	653
Accrued wages and benefits	(576)	(492)
Accrued sales commissions	(58)	56
Accrued rent	9	110
Accrued professional fees	(81)	(16)
Accrued warranty	3	23
Customer deposits	(7)	233
Other current liabilities	196	(150)
Deferred rent		(29)
Net cash used in operating activities	(67)	(1,173)
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of business	(3,821)
Purchase of property and equipment		(574)
Proceeds from sale of property and equipment		40
Net cash used in investing activitites	(3,821)	(534)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from stock options exercised		30
Net cash provided by financing activities		30
Effects of exchange rates on cash	32	30
Net cash used in all activities	(3,856)	(1,647)
Cash and cash equivalents at beginning of period	13,957	6,895
Cash and cash equivalents at end of period	10,101	5,248
Cash payments for:
Domestic and foreign income taxes	27	26
Interest	4
Details of acquisition:
Fair value of assets acquired	3,916
Liabilities assumed	(274)
Goodwill resulting from acquisition	179
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Forfeiture of non-vested shares of restricted stock		(20)
Business Acquisition [Member]
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of business	$ 3,821