XML 52 R37.htm IDEA: XBRL DOCUMENT
v3.22.4

Common Stock Warrants (Details) - Warrants | 12 Months Ended
--- | ---
Dec. 31, 2022 $ / shares shares
Balance Outstanding, Beginning | shares | 121,818
Expired | shares | (111,488)
Number of Warrants exercisable | shares | 10,330
Number of Warrants ending balance | shares | 10,330
Weighted Average Exercise Price Outstanding, Beginning | $ 110.80
Weighted Average Exercise Price Granted | 0
Weighted Average Exercise Price Exercised | 0
Weighted Average Exercise Price Forfeited | 0
Weighted Average Exercise Price Expired | 118.86
Weighted Average Exercise Price outstanding | 25.01
Weighted Average Exercisable at June 30, 2022 | $ 25.01
Weighted Average Remaining Contractual Term Outstanding, Beginning | 6 months 29 days
Weighted Average Remaining Contractual Term Outstanding, Ending | 1 year 9 months 10 days
Weighted Average Remaining Contractual Term Outstanding, Exercisable | 1 year 9 months 10 days

X
- References No definition available. + Details
Name: | ndra_NumberOfWarrantsEndingBalance
Namespace Prefix: | ndra_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_NumberOfWarrantsExercisable
Namespace Prefix: | ndra_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpiredInPeriod
Namespace Prefix: | ndra_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | ndra_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | ndra_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageExercisePrice
Namespace Prefix: | ndra_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpiredInPeriodWeightedAverageExercisePrice
Namespace Prefix: | ndra_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageExercisePrice
Namespace Prefix: | ndra_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix: | ndra_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionEquityInstrumentsOutstandingWeightedAverageRemainingContractualTermBeginning
Namespace Prefix: | ndra_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionEquityInstrumentsOutstandingWeightedAverageRemainingContractualTermEnding
Namespace Prefix: | ndra_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionEquityInstrumentsOutstandingWeightedAverageRemainingContractualTermExercisable
Namespace Prefix: | ndra_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_WeightedAverageExercisableAtJune302022
Namespace Prefix: | ndra_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ndra_WeightedAverageExercisePriceOutstanding
Namespace Prefix: | ndra_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_AwardTypeAxis=ndra_WarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |