Intangible Digital Assets - Bitcoin investment (Details) $ in Thousands	6 Months Ended
Jun. 30, 2025 USD ($) item	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($) item
Intangible Digital Assets
Number of bitcoins hold \| item	4,636			877
Cost Basis	$ 430,000
Fair Value	$ 496,865	$ 263,504	$ 214,633	$ 54,945
Crypto Asset, Name [Extensible Enumeration]	smlr:BitcoinMember

Indicates name of crypto asset. Excludes crypto asset held for platform user.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details