Warrants - Summary of Warrant Activity (Detail) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended
Warrants - Summary of Warrant Activity (Detail) (USD $)	Mar. 23, 2015	Mar. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Warrants, Beginning balance		2,532,094	2,747,094
Warrants, Granted		0ogen_ClassOfWarrantGrantedInPeriod	0ogen_ClassOfWarrantGrantedInPeriod
Warrants, Exercised			(210,000)ogen_ClassOfWarrantExercised
Warrants, Expired	(2,170,925)ogen_ClassOfWarrantExpired	(2,170,925)ogen_ClassOfWarrantExpired	(5,000)ogen_ClassOfWarrantExpired
Warrants, Ending balance		361,169	2,532,094
Weighted Average Price, Beginning balance		$ 1.93	$ 1.91
Weighted Average Price, Granted		$ 0	$ 0
Weighted Average Price, Exercised			$ 1.50
Weighted Average Price, Expired	$ (2.00)	$ (2.00)	$ (10.00)
Weighted Average Price, Ending balance		$ 1.50	$ 1.93