Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Additional Information (Details)

v3.21.2
Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Deferred revenue         $ 2.5 $ 3.3
Deferred revenue, recognized $ 0.5 $ 0.6 $ 1.1 $ 1.3    
Remaining service period to recognize deferred revenue, description     2024      
Deferred revenue amount greater than one year 0.5 0.8 $ 0.5 0.8    
Capitalized contract cost, net 0.2   0.2     $ 0.2
Laser revenue $ 0.1 $ 0.1 $ 0.3 $ 0.3    
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