XML 56 R45.htm IDEA: XBRL DOCUMENT
v3.26.1

Note 5 - Digital Assets - Crypto Asset, Activity (Details) | 3 Months Ended
--- | ---
Mar. 31, 2026 USD ($)
Balance, Number of Tokens | 0
Balance, Fair Value | $ 0
Received in connection with the January 2026 Private Placement, Number of Tokens | 943,599,689
Received in connection with the January 2026 Private Placement, Fair Value | $ 58,031
Purchased on digital asset exchanges, Number of Tokens | 1,174,155,340
Purchased on digital asset exchanges, Fair Value | $ 76,918
Received as staking rewards, Number of Tokens | 35,386,649
Received as staking rewards, Fair Value | $ 2,463
Dispositions | 0
Dispositions, Fair Value | $ 0
Net change in fair value | $ 22,674
Balance, Number of Tokens | 2,153,141,678
Balance, Fair Value | $ 160,086

X
- Definition The value amount of crypto assets acquired through exchange. + References No definition available. + Details
Name: | sdev_CryptoAssetAcquiredThroughExchange
Namespace Prefix: | sdev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of crypto assets acquired through exchange. + References No definition available. + Details
Name: | sdev_CryptoAssetNumberOfUnitsAcquiredThroughExchange
Namespace Prefix: | sdev_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of crypto assets disposed of. + References No definition available. + Details
Name: | sdev_CryptoAssetNumberOfUnitsDisposedOf
Namespace Prefix: | sdev_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of crypto assets received as rewards. + References No definition available. + Details
Name: | sdev_CryptoAssetNumberOfUnitsReceivedAsRewards
Namespace Prefix: | sdev_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of crypto assets received from equity issuance. + References No definition available. + Details
Name: | sdev_CryptoAssetNumberOfUnitsReceivedFromEquityIssuance
Namespace Prefix: | sdev_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Value amount of crypto assets received from equity issuance. + References No definition available. + Details
Name: | sdev_CryptoAssetReceivedFromEquityIssuance
Namespace Prefix: | sdev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The value amount of crypto assets received as rewards. + References No definition available. + Details
Name: | sdev_CryptoAssetReceviedAsRewards
Namespace Prefix: | sdev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of decrease in crypto asset from disposition. Excludes crypto asset held for platform user. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476162/350-60-50-3 + Details
Name: | us-gaap_CryptoAssetDisposition
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of crypto asset. Excludes crypto asset held for platform user. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476162/350-60-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476162/350-60-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476162/350-60-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 60 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476163/350-60-45-1 + Details
Name: | us-gaap_CryptoAssetFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of restricted and unrestricted crypto asset units held. Excludes crypto asset units held for platform user. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476162/350-60-50-1 + Details
Name: | us-gaap_CryptoAssetNumberOfUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of increase (decrease) in crypto asset. Excludes crypto asset held for platform user. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476162/350-60-50-3 + Details
Name: | us-gaap_CryptoAssetPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration