Property and Equipment, net (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 27,261		$ 26,654
Accumulated depreciation and amortization	(20,340)		(19,771)
Property and equipment, net	6,921		6,883
Depreciation and amortization expense	625	$ 481
Lasers Placed-In-Service [Member]
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	26,685		25,949
Equipment, Computer Hardware and Software [Member]
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	268		238
Furniture and Fixtures [Member]
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	218		213
Leasehold Improvements [Member]
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 90		$ 254

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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