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Acquisitions Acquisitions (Details) $ in Thousands |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2016 USD ($) | Feb. 18, 2016 USD ($) | Feb. 28, 2017 USD ($) | Feb. 29, 2016 USD ($) | Feb. 28, 2017 USD ($) | Feb. 29, 2016 USD ($) | Aug. 31, 2016 acquisition | Mar. 30, 2016 USD ($) | Feb. 17, 2016 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Document Period End Date |  |  |  |  | Feb. 28, 2017 |  |  |  |
Number of Businesses Acquired | acquisition |  |  |  |  |  |  | 2 |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  | $ 0 | $ 15,026 |  |  |
Goodwill, Purchase Accounting Adjustments |  |  |  |  | 2,261 |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  | $ 700 |  | 1,300 |  |  |
Net sales |  |  | $ 258,869 | 263,289 | 524,662 | 568,300 |  |  |
Business Acquisition, Pro Forma Revenue |  |  | 258,869 | $ 275,115 | 524,662 | $ 591,009 |  |  |
Larzep |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Business Acquisition, Effective Date of Acquisition |  | Feb. 17, 2016 |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  |  |  |  |  |  | $ 4,800
Business acquisitions |  | $ 9,700 |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  | $ 15,900 |  |  |  |  |  |  |
Pipeline and Process Services [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Business Acquisition, Effective Date of Acquisition | Mar. 30, 2016 |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  |  |  |  |  | $ 8,700 |
Business acquisitions | $ 38,600 |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired | 65,500 |  |  |  |  |  |  |  |
Goodwill, Purchase Accounting Adjustments | $ 2,300 |  |  |  |  |  |  |  |
Fiscal 2016 acquisitions [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Net sales |  |  | $ 8,400 |  | $ 17,700 |  |  |  |
Tradenames | Larzep |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  |  |  |  |  |  | 1,200
Customer relationships | Larzep |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  |  |  |  |  |  | $ 3,600
Customer relationships | Pipeline and Process Services [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  |  |  |  |  | 8,000 |
Noncompete Agreements [Member] | Pipeline and Process Services [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  |  |  |  |  | $ 700 |

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- Definition Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e845-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Acquisition Date -URI http://asc.fasb.org/extlink&oid=6919109 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e848-128460 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460 + Details
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