Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS PROVIDED BY (USED IN) OPERATING ACTIVITIES:
Net loss Including noncontrolling interest	$ (4,090)	$ (9,395)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	923	1,058
Increase in allowance for doubtful accounts	33	11
Loss on disposal of fixed assets	3	3
Reduction in (Increase in) accrued investment income	5	(6)
Stock-based compensation	883	1,383
Change in operating assets and liabilities:
Accounts receivable	609	609
Inventories	824	1,172
Deferred cost of goods sold	33	(117)
Other current assets	22	(514)
Accounts payable	605	(809)
Accrued liabilities	(1,912)	5,197
Deferred revenues	647	(297)
Deferred rent	(9)	(9)
Net cash used in operating activities	(1,424)	(1,714)
CASH FLOWS PROVIDED BY (USED IN) INVESTING ACTIVITIES:
Purchases of available-for-sale short-term investments	(8,993)	(12,984)
Proceeds from maturities and sales of available-for-sale short-term investments	13,983	12,990
Change in other long-term assets	3	6
Capital expenditures	(302)	(172)
Net cash provided by (used in) investing activities	4,691	(160)
CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES:
Principal payments of lease financing obligations	(541)	(503)
Proceeds from exercise of stock options	17	0
Proceeds from noncontrolling interests	0	0
Repurchase of common stock from employees for payment of taxes on vesting of restricted stock units and upon exercise of stock options	(7)	(17)
Net cash used in financing activities	(531)	(520)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(73)	(392)
NET CHANGE IN CASH AND CASH EQUIVALENTS	2,663	(2,786)
CASH AND CASH EQUIVALENTS:
Beginning of period	14,648	18,876
End of period	17,311	16,090
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest on lease financing obligations	285	318
Cash paid for income taxes	$ 103	$ 123