Basis and Summary of Significant Accounting Policies - Components of Prepaid Expenses and Other Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Prepaid Expenses	$ 49,134	$ 45,034
Prepaid Insurance	29,086	26,393
Assets Held for Sale	9,193	10,131
Deferred Tax Asset	826	826
Other Assets	25,681	31,887
Prepaid Expenses and Other Assets	$ 113,920	$ 114,271