Changes in Carrying Amount of Goodwill (Detail) (USD $)	0 Months Ended	12 Months Ended
	Jul. 22, 2013	Dec. 31, 2013	Dec. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]
Balance, beginning of year		$ 1,154,528	$ 973,927
Reverse acquisition		21,864,781
Impairment charge	(21,900,000)	(21,864,781)
Finalization of valuation - Imaging Centers		(180,601)
Balance, end of year		$ 973,927	$ 973,927