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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2014 | Sep. 30, 2013
Cash Flows From Operating Activities: |  |
Net Loss | $ (13,304) | $ (8,093)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Stock-based compensation | 1,827 | 1,202
Depreciation | 13 | 33
Provision for uncollectible note and interest receivables | 0 | 763
Loss on sale of equipment | 0 | 58
Changes in operating assets and liabilities: |  |
Prepaid expenses and other current assets | 209 | 800
Deposits and other assets | (2) | 33
Accounts payable | 731 | 189
Accrued liabilities | (774) | 0
Net Cash Used In Operating Activities | (11,300) | (5,015)
Cash Flows From Investing Activities: |  |
Purchases of property and equipment | (43) | (25)
Net Cash Used In Investing Activities | (43) | (25)
Cash Flows From Financing Activities: |  |
Proceeds from issuance of common stock for stock option exercises | 4 | 231
Net Cash Provided By Financing Activities | 4 | 231
Net decrease in cash | (11,339) | (4,809)
Cash at beginning of period | 14,625 | 9,954
Cash at end of period | 3,286 | 5,145
Supplemental disclosures of cash flow information: |  |
Cash paid for interest | 0 | 0
Cash paid for taxes | $ 0 | $ 0

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3044-108585 + Details
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