Summary of Significant Accounting Policies, Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Assets [Abstract]
Deferred taxes	$ 35,414	$ 30,780
Deposits for noncancelable operating leases	20,783	46,894
Cash surrender value for life insurance policies	45,453	41,707
Right-of-use assets, Financing, net	9,385	0
Other	27,047	34,635
Total other assets	$ 138,082	$ 154,016