INCOME TAXES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]
Income tax expense	$ 7,645	$ 8,913	$ 20,451	$ 27,249
Effective tax rate	33.90%	35.40%	31.50%	34.80%