Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.18)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 12
-Article 7

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Summary of Financial Information by Reportable Segment and Product Line (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016 USD ($)	Nov. 30, 2015 USD ($)	May 31, 2016 Segment	Aug. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment			3
Net sales	$ 265,793	$ 305,011
Operating profit (Loss)	8,471	25,371
Assets	1,421,716			$ 1,438,660
Industrial
Segment Reporting Information [Line Items]
Net sales	87,290	88,870
Operating profit (Loss)	18,776	20,554
Assets	308,313			308,222
Industrial Tools
Segment Reporting Information [Line Items]
Net sales	79,039	79,733
Integrated Solutions
Segment Reporting Information [Line Items]
Net sales	8,251	9,137
Energy
Segment Reporting Information [Line Items]
Net sales	84,646	113,764
Operating profit (Loss)	3,210	10,094
Assets	511,555			479,169
Energy Maintenance & Integrity
Segment Reporting Information [Line Items]
Net sales	64,821	78,835
Other Energy Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	19,825	34,929
Engineered Solutions
Segment Reporting Information [Line Items]
Net sales	93,857	102,377
Operating profit (Loss)	755	3,522
Assets	483,289			493,840
On-Highway
Segment Reporting Information [Line Items]
Net sales	51,630	54,075
Agriculture, Off-Highway and Other
Segment Reporting Information [Line Items]
Net sales	42,227	48,302
General Corporate
Segment Reporting Information [Line Items]
Operating profit (Loss)	(14,270)	$ (8,799)
Assets	$ 118,559			$ 157,429