INCOME TAXES (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
INCOME TAXES [Abstract]
Income before income taxes	$ 16,257,000	$ 5,242,000
Income tax provision	5,415,000	2,134,000
Consolidated net income	10,842,000	3,108,000
Income tax provision (benefit) as a percentage of income before income taxes (in hundredths)	33.30%	40.70%
Anticipated global tax rate for 2013 (in hundredths)	37.00%
Income tax provision	5,415,000	2,134,000
R&D tax credit	600,000
Unrecognized tax benefits	1,700,000		1,500,000
Amount of unrecognized tax positions that will impact effective tax rate	500,000		300,000
Amount of unrecognized tax position that will not impact the effective tax rate	$ 1,200,000		$ 1,200,000