Quarterly report pursuant to Section 13 or 15(d)

Inventory - Schedule of Inventory (Details)

v3.19.2
Inventory - Schedule of Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Devices - for resale $ 18,280 $ 11,319
Work in process 1,334  
Raw materials 7,538 8,826
Accessories 1,911 1,686
Total inventory $ 29,063 $ 21,831