Details Of Certain Accounts (Other Assets, Net) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Details Of Certain Accounts [Abstract]
Restricted cash	$ 31,043		$ 33,741
Deferred dry dock expenses, net	23,756	[1]	5,381	[1]
Deferred financing costs, net	26,091		26,483
Intangible assets with finite lives, net	471		531
Other	3,346		2,771
Total other assets, net	$ 84,707		$ 68,907

[1] The increase subsequent to December 31, 2011 reflects the costs associated with the regulatory dry docks for our Q4000, Seawell and Well Enhancer vessels during 2012.