Prepaids and Other Current Assets Prepaids and Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Prepaid Expense and Other Assets, Current [Abstract]
Deposit Assets	$ 1,232	$ 1,087
Other Receivables	0	20,137
Other Prepaid Expense, Current	13,050	12,476
Deferred Costs and Other Assets	3,655	1,951
Prepaid insurance and property taxes	3,070	2,666
Prepaid Taxes	5,207	5,072
Deferred tax charge	1,180	1,180
Other Assets, Current	2,516	1,548
Prepaid expenses and other current assets	$ 29,910	$ 46,117	[1]

[1] December 31, 2018 balances were derived from audited consolidated financial statements.