COMMITMENTS AND CONTINGENCIES (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013 sqft	Dec. 31, 2012	Dec. 31, 2011
COMMITMENTS AND CONTINGENCIES
Area of lease (in square feet)	1,700,000
Obligation for payments under leases
2014	$ 13,790,000
2015	10,827,000
2016	7,579,000
2017	5,974,000
2018	4,095,000
Thereafter	6,049,000
Total obligations under operating leases	48,314,000
Rent expense
Rent expense	$ 12,700,000	$ 13,700,000	$ 13,700,000