XML 104 R83.htm IDEA: XBRL DOCUMENT v3.19.1
Investments In Affiliated Companies, Partnership And Other Companies (Investments In Affiliated Companies) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]    
Document Fiscal Year Focus 2018  
Companies accounted for under the equity method $ 144,435 $ 159,647
Investment Owned, at Fair Value 46,858 5,114
Companies accounted for on a cost basis 4,887 7,577
Investments in affiliated companies 196,180 $ 172,338
Impairment of investments under cost-method $ 2,700