Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) Customer	Dec. 31, 2018 USD ($) Customer	Jan. 01, 2019 USD ($)
Deferred revenue			$ 2,800,000
Deferred revenue, recognized	$ 1,900,000
Remaining service period to recognize deferred revenue, description	2024
Capitalized contract cost, net	$ 400,000		400,000
Laser revenue	$ 700,000	$ 500,000
Tax benefit likely of being realized upon ultimate settlement description	measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement.
New accounting pronouncement or change in accumulated deficit			21,000
Operating lease right-of-use-assets	$ 2,835,000
Operating lease, liability	$ 2,938,000
ASU 2016-02 [Member]
Operating lease right-of-use-assets			3,200,000
Operating lease, liability			$ 3,200,000
Customer Concentration Risk | Accounts Receivable
Concentration risk, percentage	10.00%	10.00%
Number of individual customers representing greater than 10% of bench mark | Customer	1	1
Customer Concentration Risk | Revenue Benchmark
Number of individual customers representing greater than 10% of bench mark | Customer	0	0
Shipping and Handling
Shipping and handling costs	$ 500,000	$ 600,000
Advertising expense	$ 100,000	$ 40,000
Minimum [Member]
Regular warranty service contracts term	12 months
Maximum [Member]
Extended warranty service contracts term	60 months
Capitalized contract cost amortization period	1 year