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Acquisitions (Narrative) (Details) - USD ($) $ in Thousands | Feb. 28, 2015 | May 01, 2014
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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 + Details
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