Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net loss	$ (3,415)	$ (4,859)
Adjustments to reconcile net loss to cash flows from operating activities:
Depreciation and amortization	294	269
Share-based compensation	58	72
Change in fair value of warrants	130	(77)
Changes in operating assets and liabilities:
Accounts receivable, net	783	206
Product inventories	(172)	(1,635)
Prepaid expenses and other current assets	45	1
Deferred contract costs	1,733
Trade accounts payable	(934)	114
Accrued salaries and benefits	112	(258)
Accrued warranty	(88)	10
Deferred revenues	76	392
Accrued liabilities	24	33
Cash flows from operating activities	(1,354)	(5,732)
Cash flows from investing activities:
Increase (decrease) in restricted cash	293	(293)
Purchase of property, plant and equipment		(27)
Cash flows from investing activities	293	(320)
Cash flows from financing activities:
Repayment of capital lease obligation	(1)	(7)
Cash flows from financing activities	(1)	(7)
Effect of exchange rate changes on cash and cash equivalents	(385)
Derease in cash and cash equivalents	(1,447)	(6,059)
Cash and cash equivalents, beginning of period	12,372	46,519
Cash and cash equivalents, end of period	10,925	40,460
Supplemental disclosures:
Cash paid for interest	45	1
Cash paid for income taxes	0	0
Non-cash transactions:
Transfer of inventory to property, plant and equipment	$ 1,473