Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2014	Jun. 30, 2014	Dec. 31, 2013	Mar. 30, 2014	Sep. 03, 2013 Merger Agreement [Member]
Accounting Policies [Line Items]
Exchange ratio					1.1533
Reverse stock split, ratio	0.2	0.0
Common stock, shares issued	48,855,255	62,975,255	48,841,417	244,276,923
Common stock, shares outstanding	48,855,255	62,975,255	48,841,417	244,276,923
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001	$ 0.001
Amortization period		10 years
Impairment charges		$ 0	$ 0