XML 47 R26.htm IDEA: XBRL DOCUMENT
v3.20.1

Stock-Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Schedule of assumptions used in estimation of fair value of the share-based payment awards on the grant date |
|  | Year Ended |
|  | December 31, |
|  | 2019 |  | 2018 |  |  | 2017 |
Risk-free interest rate |  | 1.6% - 2.5% |  | 2.2% |  |  | 1.6% - 1.8% |
Volatility |  | 128% - 138.5% |  | 109.5% |  |  | 70.2% - 101.5% |
Expected life (years) |  | 3.0 - 5.0 |  |  | 4.0 |  |  |  | 4.0 |
Dividend yield |  | 0 % |  | 0 % |  |  | 0 % |
Summary of option and RSU activity under Amended and Restated 2000 Stock Option and Equity Incentive Plan and Amended and Restated 2010 Equity Incentive Plan | A summary of stock option and restricted stock unit (“RSU”) award activity under the Plans is presented below (in thousands, except exercise price):
|  |  |  |  |  | Options outstanding |
|  |  |  |  |  |  |  |  |  | Weighted |
|  | Shares |  |  |  |  |  |  | Average |
|  | Available |  |  | Number of |  |  | Exercise |
|  | for Grant |  |  | Shares |  |  | Prices |
Balance as of January 1, 2017 |  |  | 7 |  |  |  | 26 |  |  | $ | 277.62 |
Additional shares authorized under the Plan |  |  | 12 |  |  |  | — |  |  |  | — |
RSUs granted |  |  | (21 | ) |  |  | — |  |  |  | — |
RSUs cancelled and returned to the Plan |  |  | 3 |  |  |  | — |  |  |  | — |
Options granted |  |  | (8 | ) |  |  | 8 |  |  | $ | 15.15 |
Options cancelled and returned to the Plan |  |  | 19 |  |  |  | (19 | ) |  | $ | 313.80 |
Balance as of December 31, 2017 |  |  | 12 |  |  |  | 15 |  |  | $ | 96.24 |
Additional shares authorized under the Plan |  |  | 202 |  |  |  | — |  |  |  | — |
RSUs granted |  |  | (13 | ) |  |  | — |  |  |  | — |
RSUs cancelled and returned to the Plan |  |  | 1 |  |  |  | — |  |  |  | — |
Options granted |  |  | (2 | ) |  |  | 2 |  |  | $ | 25.60 |
Balance as of December 31, 2018 |  |  | 200 |  |  |  | 17 |  |  | $ | 83.84 |
Additional shares authorized under the Plan |  |  | 183 |  |  |  | — |  |  |  | — |
RSUs granted |  |  | (120 | ) |  |  | — |  |  |  | — |
RSUs cancelled and returned to the Plan |  |  | 1 |  |  |  | — |  |  |  | — |
Options granted |  |  | (145 | ) |  |  | 145 |  |  | $ | 2.64 |
Options cancelled and returned to the Plan |  |  | 1 |  |  |  | (1 | ) |  | $ | 144.00 |
Plan termination |  |  | (32 | ) |  |  | — |  |  | $ | — |
Balance as of December 31, 2019 |  |  | 88 |  |  |  | 161 |  |  | $ | 10.85 |
Summary of RSU activity under the Plans | A summary of RSU activity under the Plans is presented below (in thousands, except fair value):
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |
|  | Number of |  |  | Grant-Date |
|  | Shares |  |  | Fair Value |
Non-vested shares as of January 1, 2017 |  |  | 7 |  |  | $ | 162.55 |
Granted |  |  | 21 |  |  | $ | 18.60 |
Vested |  |  | (6 | ) |  | $ | 115.24 |
Cancelled |  |  | (3 | ) |  | $ | 100.78 |
Non-vested shares as of December 31, 2017 |  |  | 19 |  |  | $ | 31.59 |
Granted |  |  | 13 |  |  | $ | 17.26 |
Vested |  |  | (17 | ) |  | $ | 27.24 |
Cancelled |  |  | (1 | ) |  | $ | 24.14 |
Non-vested shares as of December 31, 2018 |  |  | 14 |  |  | $ | 24.31 |
Granted |  |  | 120 |  |  | $ | 3.79 |
Vested |  |  | (30 | ) |  | $ | 12.89 |
Cancelled |  |  | (1 | ) |  | $ | 25.13 |
Non-vested shares as of December 31, 2019 |  |  | 103 |  |  | $ | 3.75 |
Summary of significant ranges of outstanding and exercisable options | The following table summarizes significant ranges of outstanding and exercisable options as of December 31, 2018 (in thousands, except contractual life and exercise price):
|  | Options Outstanding |  |  | Options Exercisable |
|  |  |  |  |  | Weighted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Average |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Remaining |  |  | Weighted |  |  |  |  |  |  | Weighted |  |  |  |  |
|  |  |  |  |  | Contractual |  |  | Average |  |  |  |  |  |  | Average |  |  | Aggregate |
|  | Number |  |  | Life |  |  | Exercise |  |  | Number |  |  | Exercise |  |  | Intrinsic |
Range of Exercise Price |  | Outstanding |  |  | (in Years) |  |  | Price |  |  | Exercisable |  |  | Price |  |  | value |
$1.57 - $14.99 |  |  | 144 |  |  |  | 9.26 |  |  | $ | 2.64 |  |  |  | 21 |  |  | $ | 3.70 |  |  | $ | — |
$15.00 - $25.59 |  |  | 8 |  |  |  | 3.74 |  |  | $ | 15.00 |  |  |  | 5 |  |  | $ | 15.00 |  |  | $ | — |
$25.60 - $143.99 |  |  | 3 |  |  |  | 4.36 |  |  | $ | 41.88 |  |  |  | 2 |  |  | $ | 47.10 |  |  | $ | — |
$144.00 - $409.99 |  |  | 5 |  |  |  | 6.65 |  |  | $ | 144.00 |  |  |  | 5 |  |  | $ | 144.00 |  |  | $ | — |
$410.00 - $924.00 |  |  | 1 |  |  |  | 5.19 |  |  | $ | 430.64 |  |  |  | 1 |  |  | $ | 430.64 |  |  | $ | — |
$1.57 - $924.00 |  |  | 161 |  |  |  | 8.80 |  |  | $ | 10.85 |  |  |  | 34 |  |  | $ | 40.81 |  |  | $ | — |
Exercisable |  |  | 34 |  |  |  | 7.78 |  |  | $ | 40.81 |  |  |  |  |  |  |  |  |  |  |  |  |

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&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 for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&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 stock options, including, but not limited to: (a) expected term of share options and similar instruments, (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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration