COMMITMENTS, CONTINGENCIES, CONCENTRATIONS OF RISK AND LITIGATION - Summary of future minimum lease payments on non-cancelable operating leases (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
2013	$ 29,030
2014	28,412
2015	20,731
2016	20,825
2017	15,352
Thereafter	35,126
Operating leases, future minimum payments due, Total	$ 149,476

COMMITMENTS, CONTINGENCIES, CONCENTRATIONS OF RISK AND LITIGATION - Summary of future minimum lease payments on non-cancelable operating leases (Details 3) (USD $)
In Thousands, unless otherwise specified

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

$ 29,030

28,412

20,731

20,825

15,352

35,126

Operating leases, future minimum payments due, Total

$ 149,476

- Definition

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

+ References+ Details

- Definition

Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References+ Details

- Definition

Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References+ Details

- Definition

Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References+ Details

- Definition

Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References+ Details

- Definition

Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References+ Details

- Definition

Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References+ Details