Accrued Expenses (Schedule of Accrued Expenses) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accrued Expenses [Abstract]
Salaries and benefits	$ 15,257	$ 19,838
Real estate and property taxes	11,134	9,598
Unpaid capital expenditures	8,884	14,669
Other	30,306	23,513
Total accrued expenses	$ 65,581	$ 67,618