Related Party Transactions - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Jul. 16, 2015 USD ($) owner
Consulting | Officer
Related Party Transaction [Line Items]
Transaction expenses incurred by parent company	$ 14,000	$ 44,000	$ 111,000	$ 156,000
Outstanding payables due to related party	3,000		3,000		$ 31,000
Software Licensing and Subscription | Officer
Related Party Transaction [Line Items]
Quarterly software licensing fee	30,000
Deferred costs related to annual software subscription	$ 80,800		$ 80,800		$ 36,000
Non-cancellable Operating Leases | Employee
Related Party Transaction [Line Items]
Number of former owners | owner						1
Term of contract			5 years
Aggregate annual rental payments						$ 25,000