Prepaids and Other Current Assets Related-party receivables (Details) - USD ($)
$ in Thousands

3 Months Ended

Mar. 31, 2018

Dec. 31, 2017

Prepaid Expense and Other Assets, Current [Abstract]

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

Prepaid expenses and other current assets consist of the following (in thousands): 

	March 31, 2018		December 31, 2017
Deposits	$	404	$	21,940
Other prepaid expenses and receivables	14,530		4,208
Prepaid insurance and property taxes	3,872		2,580
VAT/GST receivable	5,567		8,097
Deferred tax charge	1,550		1,326
Other	6,483		3,135
	$	32,406	$	41,286

Related Party Transaction [Line Items]

Due from Related Parties, Current

$ 132,272

$ 98,807

^[1]

Accounts Receivable [Member]

Related Party Transaction [Line Items]

Due from Related Parties, Current

79,200

36,425

Prepaid Expenses and Other Current Assets [Member]

Related Party Transaction [Line Items]

Due from Related Parties, Current

$ 53,028

$ 62,382

[1] December 31, 2017 balances were derived from audited consolidated financial statements.