DEBT (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Maturities of long-term debt for each of the next five years
2015	$ 14,638
2016	98,021
2017	141,893
2018	105,310
2019	16,318
Thereafter	250,353
Total	626,533us-gaap_LongTermDebt	435,589us-gaap_LongTermDebt
Weighted average interest rate, after giving effect to interest rate derivatives (as a percent)	4.35%us-gaap_DebtWeightedAverageInterestRate	5.03%us-gaap_DebtWeightedAverageInterestRate
Debt
Fixed-rate debt	465,220	358,590
Variable-rate debt	161,313	76,999
Total	626,533us-gaap_LongTermDebt	435,589us-gaap_LongTermDebt
Not recorded at fair value
Debt
Fixed-rate debt	362,602	329,544
Fair Value \| Level 2 - Market approach
Debt
Fixed-rate debt	349,517	319,429
Carried at fair value
Debt
Variable-rate debt	$ 102,600	$ 104,000

Weighted average interest rate of debt outstanding.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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