Unconsolidated Affiliates, Redeemable Interests, Noncontrolling Interests and Cost Method Investments (Redeemable Interests, Noncontrolling Interests, Cost Method Investment and Vairable Interest Entities) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Jinsheng
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	6.20%
Cost Method Investments	$ 5,325	$ 5,325
Third Party Interests
Noncontrolling Interest [Line Items]
Redeemable interests	19,156	19,744
Noncontrolling interests	109,836	109,753
Other Consolidated Subsidiaries
Noncontrolling Interest [Line Items]
Redeemable interests	1,698	5,586
Noncontrolling interests	3,877	4,876
Noncontrolling Interests
Noncontrolling Interest [Line Items]
Noncontrolling interests	$ 113,713	$ 114,629