Summary of Significant Accounting Policies - Schedule of Carrying Value of Investments (Detail) (Measured at fair value on a nonrecurring basis [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Investment	$ 300,000	$ 1,699,672
Deposit on investment option		435,000
Total		2,134,672
Significant unobservable inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Investment	300,000	1,699,672
Deposit on investment option		435,000
Total		$ 2,134,672