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Acquisitions Acquisition (Details 1) - USD ($) $ in Thousands | Mar. 04, 2017 | Dec. 14, 2016 | Feb. 27, 2016 | Feb. 28, 2015
--- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill | $ 101,334 |  | $ 73,996 | $ 75,857
Sotawall |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Net working capital |  | $ 10,682 |  |
Property, plant and equipment |  | 7,993 |  |
Goodwill |  | 27,444 |  |
Net assets acquired |  | 91,813 |  |
Net assets acquired |  | $ 137,932 |  |

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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + 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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