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Summary of Significant Accounting Policies Other Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract]    
Cash surrender value of life insurance $ 41,575 $ 46,314
Investments in unconsolidated affiliates 3,760 3,557
Other 5,880 5,257
Total other assets $ 51,215 $ 55,128