Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net loss	$ (6,406)	$ (9,734)
Adjustments to reconcile net loss to cash flows from operating activities:
Depreciation and amortization	619	519
Share-based compensation	89	(3)
Change in fair value of warrants	10	(179)
Changes in operating assets and liabilities:
Accounts receivable, net	657	(243)
Product inventories	1,087	(2,478)
Prepaid expenses and other current assets	(149)	218
Deferred contract costs	2,628
Trade accounts payable	(1,044)	355
Accrued salaries and benefits	(117)	(204)
Accrued warranty	171	29
Deferred revenues	(1,767)	945
Accrued liabilities	(51)	17
Cash flows from operating activities	(4,273)	(10,758)
Cash flows from investing activities:
Decrease (increase) in restricted cash	9,230	(293)
Purchase of land use right	(8,586)
Purchase of property, plant and equipment	(2,259)	(56)
Cash flows from investing activities	(1,615)	(349)
Cash flows from financing activities:
Deferred income	1,876
Repayment of capital lease obligation	(2)	(5)
Cash flows from financing activities	1,874	(5)
Effect of exchange rate changes on cash and cash equivalents	318	(132)
Decrease in cash and cash equivalents	(3,696)	(11,244)
Cash and cash equivalents, beginning of period	12,372	46,519
Cash and cash equivalents, end of period	8,676	35,275
Supplemental disclosures:
Cash paid for interest	167	1
Cash paid for income taxes	0	0
Non-cash transactions:
Transfer of inventory to property, plant and equipment	$ 1,593