BORROWINGS - Principal Payments (Table) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Long-Term Debt Obligations:
June 30, 2014	$ 28,010
June 30, 2015	27,769
June 30, 2016	29,619
June 30, 2017	91,195
June 30, 2018	552,444
June 30, 2019 and thereafter	285,706
Total	$ 1,014,743	$ 992,493

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

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