COMMITMENTS AND CONTINGENCIES (Details 3) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Lease Commitments
Rental expense	$ 25,800,000	$ 22,800,000	$ 23,200,000
Estimated future minimum rental payments under non-cancelable operating leases
2013	26,437,000
2014	24,105,000
2015	20,027,000
2016	15,555,000
2017	12,052,000
Thereafter	31,309,000
Total	$ 129,485,000

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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