Investments Investments Table (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value Measurement [Domain]
Schedule of Cost and Equity Method Investments [Line Items]
Equity method investments	$ 129,625
Available-for-sale securities	32,872	$ 32,950
Cost method investments	15,056	14,561
Equity method investments		130,725
Total investments	$ 177,553	$ 178,236
Maximum [Member]
Schedule of Cost and Equity Method Investments [Line Items]
Available-for-Sale Securities, Ownership Percentage	25.00%	25.00%
Cost Method Investments, Ownership Percentage	10.00%	10.00%
Equity Method Investments, Ownership Percentage	45.00%	45.00%
Minimum [Member]
Schedule of Cost and Equity Method Investments [Line Items]
Available-for-Sale Securities, Ownership Percentage	17.00%	17.00%
Cost Method Investments, Ownership Percentage	2.00%	2.00%
Equity Method Investments, Ownership Percentage	43.00%	43.00%
Convertible debt securities [Member]
Schedule of Cost and Equity Method Investments [Line Items]
Available-for-sale securities	$ 10,173	$ 10,116
Redeemable preferred shares [Member]
Schedule of Cost and Equity Method Investments [Line Items]
Available-for-sale securities	$ 22,699	$ 22,834

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