XML 42 R27.htm IDEA: XBRL DOCUMENT
v3.22.0.1

INCOME TAXES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Income Tax Disclosure [Abstract] |
Schedule reconciles the federal statutory tax rate to the effective income tax rate from continuing operations | The following table reconciles the federal statutory tax rate to the effective income tax rate from continuing operations:
| 2021 |  | 2020 |  | 2019
Tax at statutory rate |  | 21.0 | % |  |  | 21.0 | % |  |  | 21.0 | %
State income tax, net of federal benefit |  | 9.0 |  |  |  | 6.9 |  |  |  | 12.2 |
Federal and state tax credits |  | 5.7 |  |  |  | 5.3 |  |  |  | 4.0 |
Stock-based compensation |  | (1.2 | ) |  |  | (0.5 | ) |  |  | (0.8 | )
Net operating loss not benefitted |  | (5.4 | ) |  |  | (6.9 | ) |  |  | (5.8 | )
Other |  | (0.2 | ) |  |  | (0.3 | ) |  |  | (0.2 | )
Change in valuation allowance |  | (28.9 | ) |  |  | (25.5 | ) |  |  | (30.4 | )
Effective tax rate |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | %
Schedule of significant components of the entity's deferred tax assets | . Significant components of our deferred tax assets are as follows:
|  | December 31, |
|  | 2021 |  |  | 2020 |
|  | (In thousands) |
Net operating loss carryforwards |  | $ | 241,300 |  |  | $ | 217,100 |
Federal and state tax credits |  |  | 49,600 |  |  |  | 42,800 |
Capitalized research and development |  |  | 6,900 |  |  |  | 6,000 |
Stock-based compensation |  |  | 10,200 |  |  |  | 9,400 |
Operating lease liabilities |  |  | 1,400 |  |  |  | 1,200 |
Other |  |  | 2,600 |  |  |  | 2,100 |
Total deferred tax assets |  |  | 312,000 |  |  |  | 278,600 |
Less: valuation allowance |  |  | (310,700 | ) |  |  | (277,200 | )
Net deferred tax assets |  |  | 1,300 |  |  |  | 1,400 |
Operating leases, right-of-use assets |  |  | (1,300 | ) |  |  | (1,400 | )
Total deferred tax liabilities |  |  | (1,300 | ) |  |  | (1,400 | )
Total net deferred tax assets |  | $ | — |  |  | $ | — |
Schedule of reconciliation of the beginning and ending amounts of unrecognized tax benefits | A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows (in thousands):
Balance as of December 31, 2020 |  | $ | 19,100 |
Decrease related to prior year tax positions |  |  | — |
Increase related to current year tax positions |  |  | 2,200 |
Balance as of December 31, 2021 |  | $ | 21,300 |

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
Name: | us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
Name: | us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=124434304&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details
Name: | us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration