Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense of intangible assets	$ 51	$ 103	$ 101	$ 226

Amortization of intangible assets including cost of sales.

No definition available.

Name:	slgd_AmortizationOfIntangibleAssetsIncludingCostOfSales
Namespace Prefix:	slgd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration