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Investments in Equity Method Affiliates (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2015
Investments in Equity Method Affiliates [Abstract]      
Equity method investments $ 0   $ 0
Equity method investments, Income $ 27 $ 1,828