Revenue - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Typical payment receipt, period post shipment			30 days
Training provided with sale of system, period			180 days
Contract with customer, liability	$ 11,527	$ 11,403	$ 11,527	$ 11,403	$ 11,064	$ 10,825	$ 11,737	$ 11,237
Minimum
Disaggregation of Revenue [Line Items]
Extended service contract term			1 year
Capitalized costs, expected period of benefit	2 years		2 years
Maximum
Disaggregation of Revenue [Line Items]
Extended service contract term			3 years
Capitalized costs, expected period of benefit	3 years		3 years
Sales and marketing
Disaggregation of Revenue [Line Items]
Amortization expense	$ 500	$ 500	$ 1,200	$ 1,000
Other Assets
Disaggregation of Revenue [Line Items]
Capitalized contract costs	3,900		$ 3,900			4,200
Service | Minimum
Disaggregation of Revenue [Line Items]
Extended service contract term			1 year
Service | Maximum
Disaggregation of Revenue [Line Items]
Extended service contract term			3 years
Loyalty
Disaggregation of Revenue [Line Items]
Contract with customer, liability	$ 400		$ 400			$ 500
Skincare | Japan
Disaggregation of Revenue [Line Items]
Sale of third-party product, warranty period			90 days
Transferred over Time | Service
Disaggregation of Revenue [Line Items]
Revenue from performance obligations transferred to customers, percent	7.00%	12.00%	8.00%	18.00%