XML 59 R44.htm IDEA: XBRL DOCUMENT
v3.22.2

2020 Cash Incentive Bonus Plan (Narrative) (Details) - Cash Incentive Bonus Plan [Member] - USD ($) $ in Millions |  | 6 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 04, 2022 | Jun. 30, 2022 | Dec. 31, 2021 | Oct. 13, 2020
Cash Incentive Bonus Plan [Line Items] |  |  |  |
Percentage of each cash bonus award associated with Valuation Milestone subject to adjustment and approval |  | 58.00% |  |
Payments authorized or made to participants under the Plan | $ 0.0 |  |  |
First Valuation Milestone [Member] |  |  |  |
Cash Incentive Bonus Plan [Line Items] |  |  |  |
Cash bonus award |  |  |  | $ 7.3
Second Through Eighth Valuation Milestones [Member] |  |  |  |
Cash Incentive Bonus Plan [Line Items] |  |  |  |
Compensation expense |  | $ 0.0 |  |
Minimum [Member] |  |  |  |
Cash Incentive Bonus Plan [Line Items] |  |  |  |
Valuation milestone amount in market capitalization |  | 200.0 |  |
Minimum [Member] | Exceeds $5 Billion Market Capitalization For No Less Than 20 Consecutive Trading Days [Member] |  |  |  |
Cash Incentive Bonus Plan [Line Items] |  |  |  |
Cash bonus award |  | 139.1 |  |
Minimum [Member] | Second Through Eighth Valuation Milestones [Member] |  |  |  |
Cash Incentive Bonus Plan [Line Items] |  |  |  |
Cash bonus award |  |  | $ 93.7 |
Maximum [Member] |  |  |  |
Cash Incentive Bonus Plan [Line Items] |  |  |  |
Valuation milestone amount in market capitalization |  | 5,000.0 |  |
Maximum [Member] | Exceeds $5 Billion Market Capitalization For No Less Than 20 Consecutive Trading Days [Member] |  |  |  |
Cash Incentive Bonus Plan [Line Items] |  |  |  |
Cash bonus award |  | $ 322.3 |  |
Maximum [Member] | Second Through Eighth Valuation Milestones [Member] |  |  |  |
Cash Incentive Bonus Plan [Line Items] |  |  |  |
Cash bonus award |  |  | $ 225.0 |

X
- Definition Cash Incentive Bonus Award + References No definition available. + Details
Name: | sava_CashIncentiveBonusAward
Namespace Prefix: | sava_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Cash Incentive Bonus Plan [Line Items] + References No definition available. + Details
Name: | sava_CashIncentiveBonusPlanLineItems
Namespace Prefix: | sava_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Payments For Cash Incentive Bonus + References No definition available. + Details
Name: | sava_PaymentsForCashIncentiveBonus
Namespace Prefix: | sava_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage Valuation Milestone Cash Bonus Award Subject To Approval And Adjustment + References No definition available. + Details
Name: | sava_PercentageValuationMilestoneCashBonusAwardSubjectToApprovalAndAdjustment
Namespace Prefix: | sava_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Performance Plan Valuation Amount + References No definition available. + Details
Name: | sava_PerformancePlanValuationAmount
Namespace Prefix: | sava_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after tax, of expense for award under share-based payment arrangement. + References No definition available. + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_PlanNameAxis=sava_CashIncentiveBonusPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=sava_FirstValuationMilestoneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=sava_SecondThroughEighthValuationMilestonesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=sava_Exceeds5BillionMarketCapitalizationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |