XML 73 R61.htm IDEA: XBRL DOCUMENT v3.26.1

Stock-Based Compensation - Schedule of Outstanding and Exercisable Stock Options (Details)	3 Months Ended
	Mar. 31, 2026 $ / shares shares
Schedule of Outstanding and Exercisable Stock Options [Line Items]
Stock Options Outstanding, Number of Shares	1,154,352
Stock Options Exercisable, Weighted Average Remaining Life in Years	9 years 3 months 29 days
Stock Options Exercisable, Number of Shares	1,154,352
1,501.00 [Member]
Schedule of Outstanding and Exercisable Stock Options [Line Items]
Stock Options Outstanding, Exercise Price (in Dollars per share) | $ / shares	$ 1,501
Stock Options Outstanding, Number of Shares	7
Stock Options Exercisable, Weighted Average Remaining Life in Years	8 years 4 months 24 days
Stock Options Exercisable, Number of Shares	7
5,168.00 [Member]
Schedule of Outstanding and Exercisable Stock Options [Line Items]
Stock Options Outstanding, Exercise Price (in Dollars per share) | $ / shares	$ 5,168
Stock Options Outstanding, Number of Shares	71
Stock Options Exercisable, Weighted Average Remaining Life in Years	7 years 4 months 24 days
Stock Options Exercisable, Number of Shares	71
127.30 [Member]
Schedule of Outstanding and Exercisable Stock Options [Line Items]
Stock Options Outstanding, Exercise Price (in Dollars per share) | $ / shares	$ 127.3
Stock Options Outstanding, Number of Shares	79
Stock Options Exercisable, Weighted Average Remaining Life in Years	6 years 1 month 6 days
Stock Options Exercisable, Number of Shares	79
32.20 [Member]
Schedule of Outstanding and Exercisable Stock Options [Line Items]
Stock Options Outstanding, Exercise Price (in Dollars per share) | $ / shares	$ 32.2
Stock Options Outstanding, Number of Shares	919,764
Stock Options Exercisable, Weighted Average Remaining Life in Years	9 years 3 months 18 days
Stock Options Exercisable, Number of Shares	919,764
30.00 [Member]
Schedule of Outstanding and Exercisable Stock Options [Line Items]
Stock Options Outstanding, Exercise Price (in Dollars per share) | $ / shares	$ 30
Stock Options Outstanding, Number of Shares	181,431
Stock Options Exercisable, Weighted Average Remaining Life in Years	9 years 4 months 24 days
Stock Options Exercisable, Number of Shares	181,431
19.50 [Member]
Schedule of Outstanding and Exercisable Stock Options [Line Items]
Stock Options Outstanding, Exercise Price (in Dollars per share) | $ / shares	$ 19.5
Stock Options Outstanding, Number of Shares	2,000
Stock Options Exercisable, Weighted Average Remaining Life in Years	5 years 8 months 12 days
Stock Options Exercisable, Number of Shares	2,000
9.29 [Member]
Schedule of Outstanding and Exercisable Stock Options [Line Items]
Stock Options Outstanding, Exercise Price (in Dollars per share) | $ / shares	$ 9.29
Stock Options Outstanding, Number of Shares	51,000
Stock Options Exercisable, Weighted Average Remaining Life in Years	10 years
Stock Options Exercisable, Number of Shares	51,000

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted-average contractual term remaining for vested portion of option outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ethz_RangeOfExercisePriceOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ethz_RangeOfExercisePriceTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ethz_RangeOfExercisePriceThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ethz_RangeOfExercisePriceFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ethz_RangeOfExercisePriceFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ethz_RangeOfExercisePriceSixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ethz_RangeOfExercisePriceSevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: