|
Income Taxes (Deferred Tax Assets (Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Jun. 08, 2011
|
|---|---|---|---|---|
| Acquired patents (see also Note 5) | $ 0 | $ 446 | ||
| Liability for accrued employee vacation and severance pay | 7 | 19 | ||
| Stock-based compensation | 8,104 | 4,590 | ||
| Net operating loss carryforwards | 36,605 | 23,127 | ||
| Total gross deferred tax assets | 44,716 | 28,182 | ||
| Valuation allowance | (44,445) | (24,274) | (1,231) | 0 |
| Deferred tax liability for acquired technology (refer to Note 8): | (264) | (3,889) | ||
| Net deferred tax assets | $ 7 | $ 19 |