Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Additional Information (Detail)

v3.20.1
Revenue Recognition - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Revenue Recognition [Abstract]      
Revenue from products and services transferred to customers, percentage 74.00% 84.00%  
Revenue from services transferred to customers over time, percentage 26.00% 16.00%  
Undelivered elements (product training, installation, product and support services) $ 476   $ 559
Revenue recognized from contract liability 100    
Extended warranties recognized $ 1,000