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Commitments, Contingencies and Other Commitments, Contingencies and Other (Table 2) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2016
Dec. 31, 2014
Dec. 31, 2013
Commitments Contingencies and Other [Abstract]      
Royalty Guarantees, Commitments, Amount $ 665 $ 1,165 $ 1,830