STOCK-BASED COMPENSATION Outstanding Stock Options (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding (in shares)	2,805,612	2,948,874
Options Outstanding, Intrinsic value	$ 340,568
Options Vested (in shares)	2,384,224
Options vested, Intrinsic Value	$ 340,568
$5.00 – $5.50
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$ 5.00
Exercise price, upper limit (in dollars per share)	$ 5.50
Options Outstanding (in shares)	463,450
Options Outstanding, Intrinsic value	$ 340,568
Options Vested (in shares)	463,450
Options vested, Intrinsic Value	$ 340,568
Weighted Average Remaining Life	3 years 3 months 10 days
$6.90 – $7.66
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$ 6.90
Exercise price, upper limit (in dollars per share)	$ 7.66
Options Outstanding (in shares)	272,073
Options Outstanding, Intrinsic value	$ 0
Options Vested (in shares)	272,073
Options vested, Intrinsic Value	$ 0
Weighted Average Remaining Life	6 years 4 months
$7.96 – $8.14
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$ 7.96
Exercise price, upper limit (in dollars per share)	$ 8.14
Options Outstanding (in shares)	70,250
Options Outstanding, Intrinsic value	$ 0
Options Vested (in shares)	70,250
Options vested, Intrinsic Value	$ 0
Weighted Average Remaining Life	6 years 1 month 15 days
$9.17 – $10.98
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$ 9.17
Exercise price, upper limit (in dollars per share)	$ 10.98
Options Outstanding (in shares)	242,138
Options Outstanding, Intrinsic value	$ 0
Options Vested (in shares)	242,138
Options vested, Intrinsic Value	$ 0
Weighted Average Remaining Life	4 years 12 days
$11.18 - $11.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$ 11.18
Exercise price, upper limit (in dollars per share)	$ 11.99
Options Outstanding (in shares)	325,062
Options Outstanding, Intrinsic value	$ 0
Options Vested (in shares)	283,613
Options vested, Intrinsic Value	$ 0
Weighted Average Remaining Life	5 years 1 month 15 days
$12.28 - $12.97
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$ 12.28
Exercise price, upper limit (in dollars per share)	$ 12.97
Options Outstanding (in shares)	398,572
Options Outstanding, Intrinsic value	$ 0
Options Vested (in shares)	305,560
Options vested, Intrinsic Value	$ 0
Weighted Average Remaining Life	7 years 12 days
$13.00 - $13.48
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$ 13.00
Exercise price, upper limit (in dollars per share)	$ 13.48
Options Outstanding (in shares)	164,936
Options Outstanding, Intrinsic value	$ 0
Options Vested (in shares)	117,532
Options vested, Intrinsic Value	$ 0
Weighted Average Remaining Life	7 years 4 months 22 days
$14.03 - $14.88
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$ 14.03
Exercise price, upper limit (in dollars per share)	$ 14.88
Options Outstanding (in shares)	324,861
Options Outstanding, Intrinsic value	$ 0
Options Vested (in shares)	318,779
Options vested, Intrinsic Value	$ 0
Weighted Average Remaining Life	4 years 1 month 20 days
$16.08 - $17.71
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$ 16.08
Exercise price, upper limit (in dollars per share)	$ 17.71
Options Outstanding (in shares)	544,270
Options Outstanding, Intrinsic value	$ 0
Options Vested (in shares)	310,829
Options vested, Intrinsic Value	$ 0
Weighted Average Remaining Life	7 years 2 months 18 days