Business Acquisition and Goodwill( Details1) (USD $) In Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2011	Dec. 31, 2010	Dec. 31, 2009
Changes in carrying amount of goodwill
Goodwill, gross	$ 645,782	$ 655,380	$ 398,898
Accumulated Impairment Losses	(180,158)	(180,158)	(180,158)
Goodwill, net	465,624	475,222	218,740
Goodwill, Acquired During Period	1,072	254,322
Foreign currency translation and other changes	(10,670)	2,160
Well Site Services Rental Tools [Member]
Changes in carrying amount of goodwill
Goodwill, gross	169,411	170,034	169,311
Accumulated Impairment Losses	(94,528)	(94,528)	(94,528)
Goodwill, net	74,883	75,506	74,783
Foreign currency translation and other changes	(623)	723
Well Site Services Drilling and Other [Member]
Changes in carrying amount of goodwill
Goodwill, gross	22,767	22,767	22,767
Accumulated Impairment Losses	(22,767)	(22,767)	(22,767)
Goodwill, net	0
Total well site services [Member]
Changes in carrying amount of goodwill
Goodwill, gross	192,178	192,801	192,078
Accumulated Impairment Losses	(117,295)	(117,295)	(117,295)
Goodwill, net	74,883	75,506	74,783
Foreign currency translation and other changes	(623)	723
Accommodations [Member]
Changes in carrying amount of goodwill
Goodwill, gross	289,781	299,062	58,358
Goodwill, net	289,781	299,062	58,358
Goodwill, Acquired During Period	757	239,080
Foreign currency translation and other changes	(10,038)	1,624
Offshore products [Member]
Changes in carrying amount of goodwill
Goodwill, gross	100,960	100,654	85,599
Goodwill, net	100,960	100,654	85,599
Goodwill, Acquired During Period	315	15,242
Foreign currency translation and other changes	(9)	(187)
Tubular services [Member]
Changes in carrying amount of goodwill
Goodwill, gross	62,863	62,863	62,863
Accumulated Impairment Losses	(62,863)	(62,863)	(62,863)
Goodwill, net	$ 0

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph e

-Clause 1

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 43

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph l

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 34

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 72

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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