Summary of Significant Accounting Policies - Schedule of Accumulated Other Comprehensive (Loss) Income (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income Loss Net Of Tax [Line Items]
Balance-December 31, 2012	$ 283,221
Current period other comprehensive (loss) income	1,103,647
Amounts reclassified from accumulated other comprehensive (loss) income	(16,997)
Balance-December 31, 2013	1,369,871
Unrealized Gain on Marketable Securities, Net of Tax [Member]
Accumulated Other Comprehensive Income Loss Net Of Tax [Line Items]
Balance-December 31, 2012	97,220
Current period other comprehensive (loss) income	(80,223)
Amounts reclassified from accumulated other comprehensive (loss) income	(16,997)
Balance-December 31, 2013
Translation Adjustment [Member]
Accumulated Other Comprehensive Income Loss Net Of Tax [Line Items]
Balance-December 31, 2012	186,001
Current period other comprehensive (loss) income	1,183,870
Balance-December 31, 2013	$ 1,369,871