Fair Value Measurements (Details) - USD ($) $ in Thousands |
Jun. 30, 2015 |
Dec. 31, 2014 |
Jun. 30, 2014 |
Dec. 31, 2013 |
|---|---|---|---|---|
| Assets: | ||||
| Cash and cash equivalents | $ 15,781 | $ 3,970 | $ 4,074 | $ 1,034 |
| Marketable securities | 1,975 | |||
| Total assets | $ 15,781 | 5,945 | ||
| Liabilities: | ||||
| Warrants potentially settleable in cash | 6,130 | 8,464 | ||
| Total liabilities | 6,130 | 8,464 | ||
| Quoted Prices in Active Markets (Level 1) [Member] | ||||
| Assets: | ||||
| Cash and cash equivalents | 15,781 | $ 3,970 | ||
| Marketable securities | ||||
| Total assets | $ 15,781 | $ 3,970 | ||
| Liabilities: | ||||
| Warrants potentially settleable in cash | ||||
| Total liabilities | ||||
| Significant Other Observable Inputs (Level 2) [Member] | ||||
| Assets: | ||||
| Cash and cash equivalents | ||||
| Marketable securities | $ 1,975 | |||
| Total assets | $ 1,975 | |||
| Liabilities: | ||||
| Warrants potentially settleable in cash | ||||
| Total liabilities | ||||
| Unobservable Inputs (Level 3) [Member] | ||||
| Assets: | ||||
| Cash and cash equivalents | ||||
| Marketable securities | ||||
| Total assets | ||||
| Liabilities: | ||||
| Warrants potentially settleable in cash | $ 6,130 | $ 8,464 | ||
| Total liabilities | $ 6,130 | $ 8,464 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|