Details Of Certain Accounts (Other Current Assets) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Note receivable	[1]			$ 10,000	$ 17,500
Other receivables				632	423
Prepaid insurance				197	6,582
Other prepaids				10,452	15,541
Spare parts inventory				6,651	1,857
Income tax receivable				586	0
Value added tax receivable				8,051	9,326
Other				95	72
Total other current assets				$ 36,664	$ 51,301
Note receivable, interest rate				6.00%
Financing receivable, gross				$ 20,000
Scenario, Forecast [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Note receivable, periodic principal payment		$ 10,000	$ 10,000

[1] Relates to the remaining balance of the promissory note we received in connection with the sale of our Ingleside spoolbase in January 2014. Interest on the note is payable quarterly at a rate of 6% per annum. Under the terms of the note, the remaining $20 million principal balance is required to be paid with a $10 million payment on December 31, 2015 and December 31, 2016.