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Acquisitions (Narrative) (Details) - USD ($) $ in Thousands	Feb. 28, 2015	May 01, 2014
J-Mac Tool, Inc.
Business Acquisition [Line Items]
Net assets acquired	$ 61,900
Quality Wireline and Cable, Inc.
Business Acquisition [Line Items]
Net assets acquired		$ 38,289

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- Definition

Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

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