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Investments Investments Table (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Fair Value Measurement [Domain]    
Schedule of Cost and Equity Method Investments [Line Items]    
Equity method investments $ 122,525 $ 0
Fair Value Measurement [Domain] | Maximum [Member]    
Schedule of Cost and Equity Method Investments [Line Items]    
Equity Method Investments, Ownership Percentage    
Fair Value Measurement [Domain] | Minimum [Member]    
Schedule of Cost and Equity Method Investments [Line Items]    
Equity Method Investments, Ownership Percentage 48.00%  
Cost method investments $ 14,586 $ 15,630
Equity method investments 0 1,231
Total cost and equity method investments 137,111 16,861
Available-for-sale securities 12,907 7,437
Total investments $ 150,018 $ 24,298
Maximum [Member]    
Schedule of Cost and Equity Method Investments [Line Items]    
Equity Method Investments, Ownership Percentage   50.00%
Available-for-Sale Securities, Ownership Percentage 19.00% 19.00%
Minimum [Member]    
Schedule of Cost and Equity Method Investments [Line Items]    
Equity Method Investments, Ownership Percentage 21.00% 21.00%
Available-for-Sale Securities, Ownership Percentage 17.00% 17.00%
Cost-method Investments [Member] | Maximum [Member]    
Schedule of Cost and Equity Method Investments [Line Items]    
Cost Method Investments, Ownership Percentage 19.00% 19.00%
Cost-method Investments [Member] | Minimum [Member]    
Schedule of Cost and Equity Method Investments [Line Items]    
Cost Method Investments, Ownership Percentage 6.00% 6.00%
Convertible debt securities [Member]    
Schedule of Cost and Equity Method Investments [Line Items]    
Available-for-sale securities $ 8,026 $ 2,527
Redeemable preferred shares [Member]    
Schedule of Cost and Equity Method Investments [Line Items]    
Available-for-sale securities $ 4,881 $ 4,910