Total Unrecognized Compensation Costs Related to Non-Vested Stock-Based Compensation Arrangements (Detail) (USD $)	9 Months Ended
	Oct. 31, 2013
Common stock options
Employee Service Share -Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized [Line Items]
Unrecognized compensation cost	$ 134,122
Weighted Average Remaining Life (Years)	10 months 24 days
ACO Plan restricted stock
Employee Service Share -Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized [Line Items]
Unrecognized compensation cost	$ 15,736
Weighted Average Remaining Life (Years)	1 year 3 months 18 days