Total Unrecognized Compensation Costs Related to Non-Vested Stock-Based Compensation Arrangements (Detail)	Mar. 31, 2016 USD ($)
Common stock options
Employee Service Share -Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized [Line Items]
Unrecognized compensation cost	$ 1,143,280
Restricted stock
Employee Service Share -Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized [Line Items]
Unrecognized compensation cost	0
ACO Plan restricted stock
Employee Service Share -Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized [Line Items]
Unrecognized compensation cost	$ 0