Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash Flows From Operating Activities:
Net loss	$ (12,318)	$ (17,068)
Adjustments to reconcile net loss to net cash used in operating activites:
Stock-based compensation	1,669	1,851
Stock issued for exclusive channel collaboration agreement	0	7,815
Stock issued for acquisition of program assets	0	1,169
Stock issued for license agreement	425	0
Depreciation	43	63
Provision for uncollectible accounts receivable	0	442
Write-off of uncollectible note and interest receivable	763	0
Loss on sale of equipment	58	0
Impairment loss on equipment	121	47
Gain on sale of discontinued operations	0	(677)
Changes in operating assets and liabilities:
Accounts receivable	0	14
Prepaid expenses and other current assets	855	(2,544)
Deposits and other assets	33	(6)
Accounts payable	(253)	7
Accrued liabilities	885	(29)
Net Cash Used In Operating Activities	(7,719)	(8,916)
Cash Flows From Investing Activities:
Purchase of property and equipment	(36)	(10)
Net Cash Used In Investing Activities	(36)	(10)
Cash Flows From Financing Activities:
Proceeds from issuance of common stock for stock option and warrants exercises	232	2,082
Proceeds from issuance of common stock, net issuance costs $1,031 and $680, respectively	12,193	10,120
Cash received from issuance of stock to non-controlling interest	1	0
Net Cash Provided By Financing Activities	12,426	12,202
Net increase in cash and cash equivalents	4,671	3,276
Cash and cash equivalents at beginning of period	9,954	6,678
Cash and cash equivalents at end of period	14,625	9,954
Supplemental disclosures of cash flow information:
Cash paid for interest	0	0
Cash paid for taxes	$ 0	$ 0