Details Of Certain Accounts (Other Assets, Net) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Details Of Certain Accounts [Abstract]
Restricted cash	$ 31,081		$ 33,741
Deferred dry dock expenses, net	20,341	[1]	5,381	[1]
Deferred financing costs, net	26,528		26,483
Intangible assets with finite lives, net	483		531
Other	8,353		2,771
Total other assets, net	$ 86,786		$ 68,907

[1] The increase subsequent to December 31, 2011 primarily reflects the costs associated with the completed regulatory dry docks for the Q4000 and Seawell in the first half of 2012.