SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Additional Disclosures (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Receivables, Net, Current [Abstract]
Trade	$ 323,679	$ 322,100
Income tax	6,759	88,568
Other	14,108	13,171
Total	$ 344,546	$ 423,839