CONDENSED 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	$ (4,707)	$ (7,122)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	17	15
Stock-based compensation	873	643
Net change in deferred taxes	7	3,325
Change in value of derivative liability	(269)	5,130
Changes in assets and liabilities:
Receivables and other current assets	0	(3)
Prepaid taxes	(2,180)	0
Prepaid expenses and other current assets	(356)	(216)
Accounts payable and accrued liabilities	2,529	(15)
Income tax liability	0	(13,723)
Net cash provided by (used in) operating activities	(4,086)	(11,966)
Cash flows from investing activities:
Purchase of property and equipment	(10)	0
Purchase of investments	(23,980)	(10,224)
Proceeds from sale or maturity of investments	18,461	30,372
Net cash provided by (used in) investing activities	(5,529)	20,148
Cash flows from financing activities:
Proceeds from exercise of options	90	0
Proceeds from exercise of warrants	0	736
Net cash provided by (used in) financing activities	90	736
Net increase (decrease) in cash and cash equivalents	(9,525)	8,918
Cash and cash equivalents, beginning of period	49,482	34,635
Cash and cash equivalents, end of period	39,957	43,553
Supplemental disclosure of cash flow information:
Cash paid during the year for taxes	0	9,600
Cash paid during the year for interest	$ 0	$ 0

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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).