Summary Of Significant Accounting Policies (Summary Of Changes In The Carrying Amount Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 62,215		$ 62,494	[1]
Goodwill impairment					(16,743)
Goodwill, Other Changes	720	[2]	(279)	[2]
Goodwill, Ending Balance	62,935		62,215		62,494	[1]
Contracting Services [Member]
Goodwill [Line Items]
Goodwill impairment					$ 16,700

[1] In 2010, we fully impaired $16.7 million of goodwill associated with our Australian well intervention subsidiary (“WOSEA”) (see below).

[2] Reflects foreign currency adjustment for certain amounts of our goodwill.