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 loss	$ (1,672)	$ (750)
Adjustments to reconcile net loss to net cash and cash equivalents used in operating activities:
Depreciation and amortization	125	228
Loss on disposal of assets, net		7
Provision for bad debts	16	10
Amortization of discounts on term loan payable		78
Amortization of debt issuance costs		99
Stock-based compensation	583	220
Other equity instruments compensation	25	96
Other non-cash compensation	62	61
Deferred income taxes		(1)
Changes in operating assets and liabilities:
Accounts receivable	(100)	(2,645)
Inventory	975	(191)
Prepaid expenses and other assets	606	212
Customer deposits	(145)	(2,923)
Accounts payable and accrued liabilities	(957)	431
Deferred revenue	(111)	4
Net cash and cash equivalents used in operating activities	(593)	(5,064)
Cash Flows From Investing Activities:
Additions to property, plant and equipment	(266)	(18)
Net cash and cash equivalents used in investing activities	(266)	(18)
Cash Flows From Financing Activities:
Payments under term loan payable		(2,700)
Proceeds from equity offering, net of expenses		7,049
Proceeds from exercise of stock options	277	594
Net cash and cash equivalents provided by financing activities	277	4,943
Effect of exchange rate changes	47	77
Change in cash and cash equivalents	(535)	(62)
Cash and cash equivalents, beginning of period	3,307	1,694
Cash and cash equivalents, end of period	2,772	1,632
Cash activity during the period for:
Interest	3	73
Income taxes	$ 21	$ 8