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Commitments, Contingencies and Other Commitments, Contingencies and Other (Table 4) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Goodwill [Line Items]      
Goodwill – net $ 137,097 $ 154,759 $ 96,132
Cost Basis [Member]      
Cost basis [Abstract]      
Goodwill, Gross 155,357 96,730 92,157
Goodwill, Acquired During Period (17,662) 58,627 4,573
Goodwill, Gross 137,695 155,357 96,730
Accumulated Amortization [Member]      
Cost basis [Abstract]      
Goodwill, Gross 598 598 598
Goodwill, Gross $ 598 $ 598 $ 598