SHARE-BASED COMPENSATION Outstanding Stock Options (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding (in shares)	724,850	879,810	1,236,222	2,332,889
Options Outstanding, Intrinsic value	$ 192,435
$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)	161,500
Options Outstanding, Intrinsic value	$ 192,435
Weighted Average Remaining Life	10 months 4 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)	135,700
Options Outstanding, Intrinsic value	$ 0
Weighted Average Remaining Life	3 years 21 days
$7.96 - $9.25
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)	$ 9.25
Options Outstanding (in shares)	113,176
Options Outstanding, Intrinsic value	$ 0
Weighted Average Remaining Life	2 years 65 days
$9.50 - $11.67
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Limit (in dollars per share)	$ 9.50
Exercise Price, Upper Limit (in dollars per share)	$ 11.67
Options Outstanding (in shares)	90,100
Options Outstanding, Intrinsic value
Weighted Average Remaining Life	3 years 113 days
$11.99 - $12.97
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Limit (in dollars per share)	$ 11.99
Exercise Price, Upper Limit (in dollars per share)	$ 12.97
Options Outstanding (in shares)	83,150
Options Outstanding, Intrinsic value	$ 0
Weighted Average Remaining Life	3 years 157 days
$13.00 - $14.33
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)	$ 14.33
Options Outstanding (in shares)	60,224
Options Outstanding, Intrinsic value	$ 0
Weighted Average Remaining Life	3 years 304 days
$14.88 - $17.11
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Limit (in dollars per share)	$ 14.88
Exercise Price, Upper Limit (in dollars per share)	$ 17.11
Options Outstanding (in shares)	81,000
Options Outstanding, Intrinsic value	$ 0
Weighted Average Remaining Life	5 years 21 days