Related Party Transactions - Schedule of Products and Services Sold to Related Parties (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Related Party Transaction [Line Items]
Products and services sold	$ 2	$ 614	$ 1,519	$ 2,565
Nirvana Corp [Member]
Related Party Transaction [Line Items]
Products and services sold		152		573
Smash Technologies LLC [Member]
Related Party Transaction [Line Items]
Products and services sold	$ 2		2	18
Stamax Corp. [Member]
Related Party Transaction [Line Items]
Products and services sold				36
Verablue Carribbean Group SRL [Member]
Related Party Transaction [Line Items]
Products and services sold		245	$ 1,517	245
OneClick International, LLC [Member]
Related Party Transaction [Line Items]
Products and services sold		144		160
OneClick License LLC [Member]
Related Party Transaction [Line Items]
Products and services sold		$ 73		$ 1,533