Equity Transactions - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
	Aug. 15, 2014	Dec. 31, 2014
Class of Stock [Line Items]
Gross proceeds before deduction commissions and other expenses	$ 5,600,000
Cash from issuance of common stock, net of offering costs		5,242,000
Private Placement [Member]
Class of Stock [Line Items]
Common stock, issued and sold to investors	6,845,830
Common stock, price per share	$ 0.816
Offering cost related to the transaction	400,000
Commission	200,000
Legal and other expenses	200,000
Cash from issuance of common stock, net of offering costs	$ 5,200,000