XML 43 R30.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Stock Plans (Tables) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 | Dec. 31, 2013
Stock Plans [Abstract] |  |
Schedule Of Share Based Compensation Activity [Table Text Block] |  | Activity under our stock plans, as well as non-plan activity, is summarized below (shares in thousands):
|  |  |  | Number of |  |  |  |
|  | Shares or |  | Options and |  |  |  |
|  | Awards Available |  | Awards |  | Weighted Average |
|  | For Grant |  | Outstanding |  | Exercise Price |
Balance at December 31, 2010 |  | 3,393 |  | 5,115 |  | $ | 2.29 |
Options granted |  | (734) |  | 734 |  | $ | 1.44 |
Options cancelled and expired |  | 45 |  | (241) |  | $ | 15.01 |
Options forfeited |  | 55 |  | (55) |  | $ | 1.77 |
Awards granted |  | (181) |  | 181 |  | $ | 0.00 |
Awards issued |  | — |  | (139) |  | $ | 0.00 |
Balance at December 31, 2011 |  | 2,578 |  | 5,595 |  | $ | 1.56 |
Options granted |  | (1,718) |  | 1,718 |  | $ | 1.14 |
Options cancelled and expired |  | 290 |  | (290) |  | $ | 5.54 |
Awards issued |  | — |  | (181) |  | $ | 0.00 |
Expiration of option plan |  | (1,150) |  | — |  | $ | 0.00 |
Balance at December 31, 2012 |  | — |  | 6,842 |  | $ | 1.33 |
Options exercised |  | — |  | (75) |  | $ | 1.50 |
Options cancelled and expired |  | — |  | (35) |  | $ | 3.29 |
Balance at December 31, 2013 |  | — |  | 6,732 |  | $ | 1.31 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |  | The options outstanding at December 31, 2013 have been segregated into four ranges for additional disclosure as follows (options in thousands):
|  | Options Outstanding |  | Options Exercisable |
|  |  |  | Weighted |  |  |  |  |  |  |  |  |
|  |  |  | Average |  | Weighted |  |  |  | Weighted |
|  | Number |  | Remaining |  | Average |  | Number |  | Average |
Range of Exercise Prices |  | Outstanding |  | Life (Years) |  | Exercise Price |  | Exercisable |  | Exercise Price |
$0.69 - $1.53 |  | 5,423 |  | 6.32 |  | $ | 1.05 |  | 5,422 |  | $ | 1.05 |
$1.54 - $2.38 |  | 604 |  | 3.85 |  | $ | 2.19 |  | 601 |  | $ | 2.19 |
$2.39 - $3.22 |  | 643 |  | 3.27 |  | $ | 2.52 |  | 643 |  | $ | 2.52 |
$3.23 - $4.06 |  | 62 |  | 0.11 |  | $ | 3.70 |  | 62 |  | $ | 3.70 |
$0.69 - $4.06 |  | 6,732 |  | 5.75 |  | $ | 1.31 |  | 6,728 |  | $ | 1.31 |
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] | We use the Black-Scholes-Merton option-pricing model with the following assumptions to estimate the stock-based compensation expense for the three and six month periods ended June 30, 2014 and 2013:
|  | Three Months Ended June 30, |  | Six Months Ended June 30, |
|  | 2014 |  | 2013 |  | 2014 |  | 2013 |
Weighted-average risk-free interest rate |  |  | 1.7 | % |  | 1.0 | % |  | 2.0 | % |  | 0.8 | %
Expected dividend payments |  |  | — |  |  | — |  |  | — |  |  | — |
Expected holding period (years)1 |  |  | 4.2 |  |  | 3.9 |  |  | 6.5 |  |  | 4.2 |
Weighted-average volatility factor2 |  |  | 1.67 |  |  | 1.56 |  |  | 1.66 |  |  | 1.70 |
Estimated forfeiture rates3 |  |  | 31 | % |  | 32 | % |  | 31 | % |  | 32 | %
| (1) | Expected holding periods are based on the simplified method provided in Staff Accounting Bulletin No. 107 for “plain vanilla options.”
| (2) | Weighted average volatility is based on the historical volatility of our common stock.
| (3) | Estimated forfeiture rates are based on historical data.
| We use the Black-Scholes-Merton option-pricing model with the following assumptions to estimate the stock-based compensation expense for the years ended December 31, 2013, 2012 and 2011:
|  | Years Ended December 31, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Weighted-average risk-free interest rate |  | 0.92 | % |  | 0.91 | % |  | 2.3 | %
Expected dividend payments |  | — |  |  | — |  |  | — |
Expected holding period (years)(1) |  | 3.9 |  |  | 5.1 |  |  | 5.4 |
Weighted-average volatility factor(2) |  | 1.38 |  |  | 1.75 |  |  | 1.71 |
Estimated forfeiture rates for options granted to management(3) |  | 23 | % |  | 23 | % |  | 23 | %
Estimated forfeiture rates for options granted to non-management(3) |  | 41 | % |  | 41 | % |  | 41 | %
___________________________________________________________________
| (1) | Expected holding period is based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and the expectations of future employee behavior.
| (2) | Weighted average volatility is based on the historical volatility of our common stock.
| (3) | Estimated forfeiture rates are based on historical data.
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] | The following table summarizes the stock-based compensation expense recorded for awards under the stock option plans for the three and six month periods ended June 30, 2014 and 2013:
|  | Three Months Ended June 30, |  | Six Months Ended June 30, |
(in thousands, except per share amounts) |  | 2014 |  | 2013 |  | 2014 |  | 2013 |
Research and development |  | $ | 28 |  | $ | 52 |  | $ | 173 |  | $ | 356 |
General and administrative |  |  | 32 |  |  | 78 |  |  | 213 |  |  | 279 |
Total stock-based compensation expenses |  | $ | 60 |  | $ | 130 |  | $ | 386 |  | $ | 635 |
| The following table summarizes the stock-based compensation expense and impact on our basic and diluted loss per share for the years ended December 31, 2013, 2012 and 2011:
|  | Years Ended December 31, |
(in thousands, except per share amounts) |  | 2013 |  | 2012 |  | 2011 |
Research and development |  | $ | 378 |  | $ | 1,021 |  | $ | 371 |
General and administrative |  |  | 300 |  |  | 1,560 |  |  | 806 |
Total stock-based compensation expenses |  | $ | 678 |  | $ | 2,581 |  | $ | 1,177 |
Increase in basic net income (loss) per share |  | $ | (0.01) |  | $ | (0.04) |  | $ | (0.02) |
Increase in diluted net income (loss) per share |  | $ | (0.01) |  | $ | (0.04) |  | $ | (0.02) |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | The following table summarizes option activity for the six month period ended June 30, 2014:
(in thousands, except per share amounts) |  | Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Option Term |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2014 |  |  | 6,732 |  | $ | 1.31 |  |  | 5.75 |  | $ | — |
Granted |  |  | 275 |  |  | 0.66 |  |  |  |  |  |  |
Exercised |  |  | — |  |  | — |  |  |  |  |  |  |
Expired or cancelled |  |  | (310) |  |  | 2.05 |  |  |  |  |  |  |
Forfeited |  |  | (27) |  |  | 1.66 |  |  |  |  |  |  |
Outstanding at June 30, 2014 |  |  | 6,670 |  | $ | 1.25 |  |  | 5.53 |  | $ | 37 |
Exercisable at June 30, 2014 |  |  | 6,595 |  | $ | 1.26 |  |  | 5.48 |  | $ | 28 |
| The following table summarizes option activity for the year ended December 31, 2013:
|  |  |  |  |  |  | Weighted |  |  |  |
|  |  |  | Weighted |  | Average |  |  |  |
|  |  |  | Average |  | Remaining |  | Aggregate |
|  |  |  | Exercise |  | Contractual |  | Intrinsic |
(in thousands, except per share amounts) |  | Shares |  | Price |  | Term |  | Value |
Outstanding at January 1, 2012 |  | 6,842 |  | $ | 133 |  |  |  |  |  |
Exercised |  | (75) |  |  | 1.50 |  |  |  |  |  |
Cancelled |  | (35) |  |  | 3.29 |  |  |  |  |  |
Outstanding at December 31, 2013 |  | 6,732 |  | $ | 1.31 |  | 5.75 |  | $ | — |
Exercisable at December 31, 2013 |  | 6,728 |  | $ | 1.31 |  | 5.75 |  | $ | — |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] | The following table summarizes restricted stock activity for the six month period ended June 30, 2014:
(in thousands, except per share amounts) |  | Restricted Stock |  | Weighted Average Exercise Price |  | Weighted Average Remaining Term |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2014 |  |  | — |  | $ | — |  |  | — |  | $ | — |
Granted |  |  | 617 |  |  | — |  |  |  |  |  |  |
Released |  |  | (259) |  |  | — |  |  |  |  |  |  |
Expired or cancelled |  |  | — |  |  | — |  |  |  |  |  |  |
Forfeited |  |  | — |  |  | — |  |  |  |  |  |  |
Outstanding at June 30, 2014 |  |  | 358 |  | $ | — |  |  | 9.62 |  | $ | 281 |
Exercisable at June 30, 2014 |  |  | — |  | $ | — |  |  | — |  | $ | — |

X
- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration