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Business Segment Information (Details 2) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Net Long Lived Assets And Assets Held Outside Country [Abstract]      
Long-lived assets, net $ 1,409 $ 2,064 $ 729
Total assets 155,815 152,928 158,843
United States (Member)      
Net Long Lived Assets And Assets Held Outside Country [Abstract]      
Long-lived assets, net 763 834 352
Total assets 114,880 143,897 150,315
Foreign Countries [Member]      
Net Long Lived Assets And Assets Held Outside Country [Abstract]      
Long-lived assets, net 646 1,230 377
Total assets $ 40,935 $ 9,031 $ 8,528