Details Of Certain Accounts (Other Assets, Net) (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
		Jan. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014	Nov. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Note receivable	[1]				$ 10,000	$ 10,000
Deferred dry dock expenses, net					27,207	11,631
Deferred financing costs, net (Note 6)					21,182	23,399
Intangible assets with finite lives, net					736	696
Charter fee deposit (Note 12)					12,544	12,544	$ 12,500
Other					455	1,002
Total other assets, net					$ 72,124	$ 59,272
Note receivable, interest rate					6.00%
Financing receivable, gross					$ 20,000
Note receivable, periodic principal payment		$ 7,500
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. The balance at December 31, 2014 included $7.5 million, which was paid in January 2015. 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.