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Note 2 - Digital Assets (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Crypto Asset, Unrealized Gain (Loss), Nonoperating | $ (1,517,000) | $ 0 | $ (1,486,000) | $ 0
Bittensor (TAO) [Member] |  |  |  |
Crypto Asset, Unrealized Gain (Loss), Nonoperating | $ (1,517,000) |  | $ (1,486,000) |

X
- Definition Amount of unrealized gain (loss) from remeasurement of crypto asset, classified as nonoperating. 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 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476163/350-60-45-2 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | srt_CryptoAssetAxis=oblg_BittensorTaoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |