Summary of Significant Accounting Policies - Schedule of Change in Level 3 Assets Measured at Fair Value on Non Recurring Basis (Detail) - Measured at fair value on a nonrecurring basis [Member]	12 Months Ended
	Dec. 31, 2015 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 300,000
Impairment of investment	$ (300,000)