Variable-fee Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Variable-fee Revenue
Revenue from variable-fee licenses	$ 4,088	$ 2,660	$ 7,080	$ 6,166
Revenue from sales of hardware and equipment accessories	$ 332	$ 291	$ 732	$ 842

It represents as a revenue recognition from sales of hardware and equipment accessories.

No definition available.

Name:	smlr_RevenueRecognitionFromSalesOfHardwareAndEquipmentAccessories
Namespace Prefix:	smlr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration