Annual report pursuant to Section 13 and 15(d)

Segment and Geographic Information - Segment Geographic Information on Revenues and Long-Lived Assets by Geographic (Detail)

v3.19.1
Segment and Geographic Information - Segment Geographic Information on Revenues and Long-Lived Assets by Geographic (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Entity Wide Revenue Major Customer [Line Items]                      
Net revenues $ 27,192 $ 30,411 $ 23,854 $ 22,112 $ 20,961 $ 22,732 $ 15,905 $ 15,153 $ 103,569 $ 74,751 $ 40,207
Property and equipment, net 3,430       2,757       3,430 2,757 2,006
United States and Canada                      
Entity Wide Revenue Major Customer [Line Items]                      
Net revenues                 72,898 40,743 25,952
Property and equipment, net 3,405       2,701       3,405 2,701 1,916
Europe, Middle East, and Africa                      
Entity Wide Revenue Major Customer [Line Items]                      
Net revenues                 18,606 5,691 3,494
Property and equipment, net 15       41       15 41 73
Asia Pacific and China                      
Entity Wide Revenue Major Customer [Line Items]                      
Net revenues                 9,324 23,608 9,269
Property and equipment, net 10       15       10 15 17
Mexico, Central America, and South America                      
Entity Wide Revenue Major Customer [Line Items]                      
Net revenues                 2,741 4,709 1,492
Property and equipment, net $ 0       $ 0       $ 0 $ 0 $ 0