Consolidated Statements Of Cash Flows (USD $) In Thousands	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (9,385)	$ (622)
Income (loss) from discontinued operations	(8)	160
Net loss from continuing operations	(9,377)	(782)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	99	116
Abandoned patent write-off		466
Foreign currency exchange	648	(546)
Non-cash compensation expense	459	1,026
Non-cash loss in equity method investee	6,938	1,865
Changes in assets and liabilities:
Accounts receivable	497	46
Accounts receivable from Dynamic Fuels, LLC	(1,113)	2,793
Other assets	182	196
Accounts payable	(1,064)	73
Accrued liabilities and other	317	58
Deferred revenue		(3,217)
Net cash provided by (used in) continuing operations	(2,414)	2,094
Net cash used in discontinued operations	(8)	(257)
Net cash provided by (used in) operating activities	(2,422)	1,837
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(23)	(3)
Investment in and loans to Dynamic Fuels, LLC	(3,850)	(5,000)
Net cash used in investing activities	(3,873)	(5,003)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from sale of common stock, warrants and option exercises	35	83
Proceeds from common stock purchase agreement		2,749
Net cash provided by financing activities	35	2,832
NET CHANGE IN CASH AND CASH EQUIVALENTS	(6,260)	(334)
CASH AND CASH EQUIVALENTS, beginning of period	12,513	25,012
CASH AND CASH EQUIVALENTS, end of period	$ 6,253	$ 24,678

Name:	us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).