Information with Respect to Stock Options and Warrants Outstanding (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Stock Options and Warrants
Number of options and warrants
Outstanding, ending balance	1,605,956	1,836,106
Weighted average exercise price, options and warrants
Weighted average exercise price, outstanding ending balance	$ 12.50	$ 12.91
Options and warrants outstanding, shares	1,605,956
Options and warrants exercisable, Shares	1,585,796
Stock Options and Warrants | Less than $5.00
Weighted average exercise price, options and warrants
Option and warrants, exercise price range, upper range limit	$ 5.00
Options and warrants outstanding, shares	102,000
Options and warrants outstanding, average remaining life (years)	4 years 7 months 6 days
Options and warrants outstanding, average exercise price	$ 4.59
Options and warrants exercisable, Shares	82,000
Options and warrants exercisable, average exercise price	$ 4.66
Stock Options and Warrants | $5.01 to $10.00
Weighted average exercise price, options and warrants
Option and warrants, exercise price range, lower range limit	$ 5.01
Option and warrants, exercise price range, upper range limit	$ 10.00
Options and warrants outstanding, shares	193,750
Options and warrants outstanding, average remaining life (years)	3 years 7 months 6 days
Options and warrants outstanding, average exercise price	$ 10.00
Options and warrants exercisable, Shares	193,750
Options and warrants exercisable, average exercise price	$ 10.00
Stock Options and Warrants | Greater than $10.00
Weighted average exercise price, options and warrants
Option and warrants, exercise price range, lower range limit	$ 10.00
Options and warrants outstanding, shares	1,310,206
Options and warrants outstanding, average remaining life (years)	3 years 10 months 24 days
Options and warrants outstanding, average exercise price	$ 13.48
Options and warrants exercisable, Shares	1,310,046
Options and warrants exercisable, average exercise price	$ 13.48
Warrant
Number of options and warrants
Reverse acquisition		857,242
Granted	1,500	866,364
Forfeited	(229,650)
Weighted average exercise price, options and warrants
Weighted average exercise price, Reverse acquisition		$ 15.40
Weighted average exercise price, Granted	$ 5.00	$ 13.26
Weighted average exercise price, Forfeited	$ 15.82
Stock Option
Number of options and warrants
Reverse acquisition		56,250
Granted		60,000
Forfeited	(2,000)	(3,750)
Weighted average exercise price, options and warrants
Weighted average exercise price, Reverse acquisition		$ 13.30
Weighted average exercise price, Granted		$ 4.30
Weighted average exercise price, Forfeited	$ 12.50	$ 40.00