COMMITMENTS AND CONTINGENCIES (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Future minimum rental commitments for non-cancelable leases [Abstract]
2014	$ 24,733,000
2015	19,825,000
2016	15,057,000
2017	10,526,000
2018	5,025,000
Thereafter	2,931,000
Rental expense for operating leases	$ 27,600,000	$ 21,600,000	$ 14,200,000