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Debt (Details 1) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
7.25% unsecured notes due February 1, 2019 $ 398,101 $ 397,893
Other indebtedness 6,771 8,258
Total Debt 451,942 450,776
Less: current portion (53,740) (3,168)
Total Long-Term Debt 398,202 447,608
AUD [Member]
   
Debt Instrument [Line Items]    
Revolving credit borrowing $ 47,070 $ 44,625