Related Party Transactions - Additional Information (Detail) - Officer - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Consulting
Related Party Transaction [Line Items]
Transaction expenses incurred by parent company	$ 200,000	$ 200,000	$ 200,000
Outstanding payables due to related party	12,000	31,000
Software Licensing and Subscription
Related Party Transaction [Line Items]
Annual payments	100,000
Deferred costs related to annual subscription	$ 50,500	$ 36,000