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Represent the amount of inventory step up costs.

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No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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No definition available.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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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.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Acquisitions - By Acquiree (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		8 Months Ended	9 Months Ended
	Nov. 30, 2016	May 31, 2016	May 31, 2017	May 31, 2017	May 31, 2016	Sep. 30, 2016
Pro Forma Information
Expenses related to acquisition				$ 584
Resin Designs
Acquisition of Specialty Chemical Intermediates Businesses
Intangible assets			$ 19,450	$ 19,450		$ 19,450
Pro Forma Information
Revenue since acquisition date			10,399
Net gain since acquisition date			316
Expenses related to acquisition	$ 584		584
Inventory step-up costs			190
Statutory tax rate (as a percent)				35.00%
Revenue		$ 67,358		$ 185,151	$ 185,275
Net income		$ 7,551		$ 31,272	$ 21,268
Net income available to common shareholders, per common and common equivalent share
Basic earnings per share (in dollars per share)		$ 0.81		$ 3.34	$ 2.31
Diluted earning per share (in dollars per share)		$ 0.80		$ 3.31	$ 2.27
Resin Designs \| Customer Relationships
Acquisition of Specialty Chemical Intermediates Businesses
Intangible assets			17,500	$ 17,500
Useful life				10 years
Resin Designs \| Technology
Acquisition of Specialty Chemical Intermediates Businesses
Intangible assets			1,200	$ 1,200
Useful life				4 years
Resin Designs \| Trade names
Acquisition of Specialty Chemical Intermediates Businesses
Intangible assets			$ 750	$ 750
Useful life				7 years