Other Related Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Related Party Transaction [Line Items]
Equity raised amount				$ 9,200,000
Payment of annual bonus compensation				25,000
Executive Vice President [Member]
Related Party Transaction [Line Items]
Fees for consulting work performed	67,000	62,500	197,000	187,500
Payment of annual bonus compensation			$ 47,500	$ 80,000