Summary of Significant Accounting Policies (Changes in Carrying Amount of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Goodwill [Line Items]
Balance as of December 31, 2013	$ 110,914us-gaap_Goodwill
Goodwill additions	1,800us-gaap_GoodwillAcquiredDuringPeriod
Goodwill Impairment	(34,703)us-gaap_GoodwillImpairmentLoss
Balance as of December 31, 2014	78,011us-gaap_Goodwill
Completion and Remedial Services
Goodwill [Line Items]
Balance as of December 31, 2013	77,696
Goodwill additions	315
Balance as of December 31, 2014	78,011
Fluid Services
Goodwill [Line Items]
Balance as of December 31, 2013	26,596
Goodwill additions	1,485
Goodwill Impairment	(28,081)
Well Servicing
Goodwill [Line Items]
Balance as of December 31, 2013	6,622
Goodwill additions
Goodwill Impairment	(6,622)
Contract Drilling
Goodwill [Line Items]
Goodwill additions

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: 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=35741047&loc=d3e13816-109267

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

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-Name Accounting Standards Codification

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