KMG Chemicals 10-K 16 Oct 17 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2017	Oct. 12, 2017	Jan. 31, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jul. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	KMG
Entity Registrant Name	KMG CHEMICALS INC
Entity Central Index Key	1,028,215
Current Fiscal Year End Date	--07-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		11,906,672
Entity Public Float			$ 331.9

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Jul. 31, 2017	Jul. 31, 2016
Current assets
Cash and cash equivalents		$ 20,708	$ 12,428
Accounts receivable
Trade, net of allowances of $263 at July 31, 2017 and $210 at July 31, 2016		51,168	33,324
Other		6,168	5,572
Inventories, net		46,482	37,401
Prepaid expenses and other		8,617	6,623
Total current assets		133,143	95,348
Property, plant and equipment, net	[1]	105,435	79,739
Goodwill		224,391	22,228
Intangible assets, net		320,401	33,906
Restricted cash			1,000
Other assets, net		9,061	4,807
Total assets		792,431	237,028
Current liabilities
Accounts payable		29,570	26,418
Accrued liabilities		12,456	11,252
Employee incentive accrual		7,713	5,999
Current portion of long-term debt		3,167
Total current liabilities		52,906	43,669
Long-term debt, net		523,102	35,800
Deferred tax liabilities		37,944	9,948
Other long-term liabilities		4,763	4,422
Total liabilities		618,715	93,839
Commitments and contingencies
Stockholders’ equity
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued
Common stock, $.01 par value, 40,000,000 shares authorized, 11,889,649 shares issued and outstanding at July 31, 2017 and 11,877,282 shares issued and outstanding at July 31, 2016		119	119
Additional paid-in capital		42,535	36,553
Accumulated other comprehensive loss		(9,712)	(12,047)
Retained earnings		140,774	118,564
Total stockholders’ equity		173,716	143,189
Total liabilities and stockholders’ equity		$ 792,431	$ 237,028
[1]	In fiscal year 2016, as part of the Company’s ongoing review of its Milan production facilities, the Company determined that certain other facilities had excess capacity sufficient to absorb the manufacturing operations of one of its Milan plants. As a result, the Company committed to sell properties with a total estimated fair value, less costs to sell, of approximately $4.3 million at July 31, 2016. Assets held for sale are included in Prepaid expenses and other in Current assets. The Company obtained an updated third party market analysis on the property and has increased marketing and advertising efforts and expects the sale of the property to be completed during fiscal year 2018. The fair value measurements were based on recent valuation appraisals.

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2017	Jul. 31, 2016
Statement Of Financial Position [Abstract]
Allowances for accounts receivables	$ 263	$ 210
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	11,889,649	11,877,282
Common stock, shares outstanding	11,889,649	11,877,282

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Income Statement [Abstract]
Net sales		$ 333,442	$ 297,978	$ 320,498
Cost of sales		203,304	182,470	211,021
Gross profit		130,138	115,508	109,477
Distribution expenses		38,318	36,986	48,523
Selling, general and administrative expenses		54,467	49,192	37,461
Restructuring charges		20	1,629	1,279
Realignment charges			130	5,625
Operating income	[1]	37,333	27,571	16,589
Other income/(expense)
Interest expense, net		(4,817)	(799)	(1,407)
Loss on the extinguishment of debt		(353)
Gain on purchase of NFC			1,826
Gain on sale of creosote distribution business, net				5,448
Other non-operating expense				(1,250)
Other, net		279	(368)	(496)
Total other income/(expense), net		(4,891)	659	2,295
Income before income taxes		32,442	28,230	18,884
Provision for income taxes		(8,809)	(9,555)	(6,746)
Net income		$ 23,633	$ 18,675	$ 12,138
Earnings per share
Basic		$ 1.99	$ 1.59	$ 1.04
Diluted		$ 1.92	$ 1.57	$ 1.03
Weighted average shares outstanding
Basic		11,885	11,719	11,673
Diluted		12,286	11,926	11,779
[1]	Segment income from operations includes allocated corporate overhead expenses, but excludes restructuring and realignment charges, which are included in the Other Activities column.

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 23,633	$ 18,675	$ 12,138
Other comprehensive (loss)/income
Foreign currency translation (loss)/gain	2,544	(2,620)	(10,202)
Pension and other post-retirement benefit liability adjustments	(209)	240	(110)
Total other comprehensive (loss)/income	2,335	(2,380)	(10,312)
Total comprehensive income	$ 25,968	$ 16,295	$ 1,826

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Beginning Balance at Jul. 31, 2014	$ 120,206	$ 116	$ 28,886	$ 645	$ 90,559
Beginning Balance (in shares) at Jul. 31, 2014		11,649
Cash dividends	(1,402)				(1,402)
Restricted stock issued, value	1	$ 1
Restricted stock issued, shares		41
Stock-based compensation expense	2,766		2,766
Tax benefit from stock-based awards	24		24
Net income	12,138				12,138
Gain (loss) on foreign currency translation	(10,202)			(10,202)
Pension liability adjustment	(110)			(110)
Ending Balance at Jul. 31, 2015	123,421	$ 117	31,676	(9,667)	101,295
Ending Balance (in shares) at Jul. 31, 2015		11,690
Cash dividends	(1,406)				(1,406)
Restricted stock issued, value		$ 2	(2)
Restricted stock issued, shares		187
Stock-based compensation expense	4,836		4,836
Tax benefit from stock-based awards	43		43
Net income	18,675				18,675
Gain (loss) on foreign currency translation	(2,620)			(2,620)
Pension liability adjustment	240			240
Ending Balance at Jul. 31, 2016	143,189	$ 119	36,553	(12,047)	118,564
Ending Balance (in shares) at Jul. 31, 2016		11,877
Cash dividends	(1,423)				(1,423)
Restricted stock issued, value	(277)		(277)
Restricted stock issued, shares		12
Stock-based compensation expense	6,259		6,259
Net income	23,633				23,633
Gain (loss) on foreign currency translation	2,544			2,544
Pension liability adjustment	(209)			(209)
Ending Balance at Jul. 31, 2017	$ 173,716	$ 119	$ 42,535	$ (9,712)	$ 140,774
Ending Balance (in shares) at Jul. 31, 2017		11,889

CONSOLIDATED STATEMENTS OF STO7

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Statement Of Stockholders Equity [Abstract]
Cash dividend per share	$ 0.12	$ 0.12	$ 0.12

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		12 Months Ended
		Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Cash flows from operating activities
Net income		$ 23,633	$ 18,675	$ 12,138
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	[1]	16,964	14,534	13,531
Depreciation related to restructuring and realignment			295	5,640
Loss on extinguishment of debt		353
Amortization of loan costs included in interest expense		401	167	153
Stock-based compensation expense		6,259	4,836	2,766
Allowance for excess and obsolete inventory		22	173	941
Gain on sale of creosote business				(5,448)
Gain on NFC acquisition			(1,826)
Gain on equipment disposition		(200)
Other		(156)	81
Deferred income tax expense/(benefit)		(1,090)	258	(3,532)
Tax expense/(benefit) from stock-based awards		(694)	(43)	23
Changes in operating assets and liabilities, net of effects of acquisition
Accounts receivable — trade		(3,146)	5,154	1,265
Accounts receivable — other		254	(1,889)	(1,884)
Inventories		2,870	4,348	(740)
Other current and non-current assets		(1,500)	1,221	(633)
Accounts payable		(1,096)	(9,226)	1,234
Accrued liabilities and other		2,049	4,276	(7,886)
Net cash provided by operating activities		44,923	41,034	17,568
Cash flows from investing activities
Additions to property, plant and equipment		(13,074)	(14,358)	(13,821)
Additions to product registration intangibles		(753)
Disposals of property, plant and equipment				2,572
Proceeds from sale of creosote business				14,899
Proceeds from insurance claim		1,251
Net cash used in investing activities		(524,175)	(17,037)	(18,288)
Cash flows from financing activities
Net payments under revolving loan facility				(40,000)
Deferred financing costs		(15,323)		(666)
Proceeds from borrowings under credit facility		17,000	2,800	59,100
Net payments under credit facility		(52,800)	(20,000)	(6,100)
Proceeds from term loan		550,000
Principal payments on borrowings on term loans		(10,000)		(20,000)
Tax expense/(benefit) from stock-based awards			43	(23)
Cash payments related to tax withholdings from stock-based awards		(277)
Payment of dividends		(1,423)	(1,406)	(1,402)
Net cash provided by/(used in) financing activities		487,177	(18,563)	(9,091)
Effect of exchange rate changes on cash		(645)	(523)	(1,924)
Net increase (decrease) in cash and cash equivalents		7,280	4,911	(11,735)
Cash, cash equivalents and restricted cash at the beginning of year		13,428	8,517	20,252
Cash, cash equivalents and restricted cash at end of year		20,708	13,428	8,517
Supplemental disclosures of cash flow information
Cash paid for interest		4,309	621	1,321
Cash paid for income taxes		9,937	9,744	12,182
Supplemental disclosure of non-cash investing activities
Purchase of property, plant and equipment through accounts payable		1,385	373	882
Accrued liabilities under industrial lubricants business acquisition		175		1,798
NFC
Adjustments to reconcile net income to net cash provided by operating activities
Gain on NFC acquisition			(1,826)
Cash flows from investing activities
Acquisition / Purchase, net of cash acquired			$ (2,679)
Sealweld
Cash flows from investing activities
Acquisition / Purchase, net of cash acquired		(16,599)
Flowchem
Adjustments to reconcile net income to net cash provided by operating activities
Deferred income tax expense/(benefit)		600
Cash flows from investing activities
Acquisition / Purchase, net of cash acquired		$ (495,000)
Val-Tex
Cash flows from investing activities
Acquisition / Purchase, net of cash acquired				$ (21,938)
[1]	Segment depreciation excludes depreciation for restructuring and realignment.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Jul. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES General — KMG Chemicals, Inc. (the “Company”) is involved principally in the manufacture, formulation and distribution of specialty chemicals and performance materials for the semiconductor, industrial wood preservation and pipeline and energy markets. In its electronic chemicals business, the Company sells high purity process chemicals primarily to the semiconductor industry. The Company operates its electronic chemicals business through KMG Electronic Chemicals, Inc. in North America and through KMG Italia, S.r.l. and KMG Electronic Chemicals Holdings S.a.r.l. (and its subsidiaries) in Europe and Asia and has facilities in the United States, the United Kingdom, France, Italy and Singapore. In its pipeline performance business, the Company sells products and services to the pipeline and energy services market that are used to optimize pipeline throughput and maximize performance and safety . Principles of Consolidation — The consolidated financial statements include the accounts of KMG Chemicals, Inc. and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates — The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. Cash and Cash Equivalents — The Company considers all investments with original maturities of three months or less when purchased to be cash equivalents. Restricted Cash — Restricted cash includes cash balances which are legally or contractually restricted to use. The Company’s restricted cash as of July 31, 2016 includes proceeds that were placed in escrow in connection with the sale of the animal health business. See Note 3. Fair Value of Financial Instruments — The carrying value of financial instruments, including cash and cash equivalents, accounts receivable, and accounts payable approximate fair value because of the relatively short maturity of these instruments. The fair value of the Company’s debt at July 31, 2017 and 2016 approximated its carrying value since the debt obligations bear interest at a rate consistent with market rates. Accounts Receivable — The Company’s trade accounts receivables are primarily from sales of products worldwide. The Company extends credit based on an evaluation of the customer’s financial condition, generally without requiring collateral. Exposure to losses on receivables is dependent on each customer’s financial condition. The Company records an allowance for doubtful accounts to reduce accounts receivable when the Company believes an account may not be collected. A provision for bad debt expense is recorded to selling, general and administrative expenses. The amount of bad debt expense recorded each period and the resulting adequacy of the allowance at the end of each period are determined using a customer-by-customer analyses of accounts receivable balances each period and the Company’s assessment of future bad debt exposure. Historically, write offs of accounts receivable balances have been insignificant. The allowance was $0.3 million and $0.2 million at July 31, 2017 and 2016, respectively. Inventories — Inventories are valued at the lower of cost or market. For certain products, cost is generally determined using the first-in, first-out (“FIFO”) method. For certain other products the Company utilizes a weighted-average cost. The Company records a reserve for inventory obsolescence as a reduction in its inventory when considered not salable. Property, Plant, and Equipment — Property, plant, and equipment are stated at cost less accumulated depreciation and amortization. Major renewals and betterments are capitalized. Repairs and maintenance costs are expensed as incurred. Depreciation for equipment commences once placed in service, and depreciation for buildings and leasehold improvements commences once they are ready for their intended use. Depreciable life is determined through economic analysis. Depreciation for financial statement purposes is provided on the straight-line method. The estimated useful lives of classes of assets are as follows: Asset Class Life (Years) Building 15 to 30 Plant 10 to 18 Equipment 3 to 15 Leasehold improvements Remaining Depreciation expense was approximately $12.7 million, $12.9 million and $17.5 million in fiscal years 2017, 2016 and 2015, respectively (including accelerated depreciation of $0.3 million and $5.6 million in fiscal years 2016 and 2015, respectively). See Notes 5 and 14. Intangible Assets — Identifiable intangible assets with a defined life are amortized using a straight-line method over the useful lives of the assets. Identifiable intangible assets of an indefinite life are not amortized. These assets are required to be tested for impairment at least annually. If this review indicates that impairment has occurred, the carrying value of the intangible assets will be adjusted to fair value. Based on an assessment of qualitative factors, in accordance with GAAP, it was determined that there were no events or circumstances that would lead the Company to a determination that is more likely than not that the fair value of the applicable assets was less than its carrying value as of July 31, 2017 and 2016. The Company therefore concluded that its indefinite lived intangible assets were not impaired as of July 31, 2017 and 2016. It is the Company’s policy to expense costs as incurred in connection with the renewal or extension of its intangible assets. Goodwill — Goodwill represents the excess of the purchase price paid for acquired businesses over the allocated fair value of the related net assets after impairments, if applicable. The Company evaluates goodwill for impairment annually, and when an event occurs or circumstances change to suggest that the carrying amount may not be recoverable. The Company has goodwill of $216.5 million and $7.9 million associated with its performance materials and electronic chemicals segments, respectively, as of July 31, 2017. As part of the goodwill impairment analysis, current accounting standards give companies the option to first perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill. If it is determined that it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then performing the currently prescribed two-step impairment test is unnecessary. In developing a qualitative assessment to meet the “more-likely-than-not” threshold, each reporting unit with goodwill on its balance sheet is assessed separately, and different relevant events and circumstances are evaluated for each unit. If it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, then the prescribed two-step impairment test is performed. Current accounting standards also give us the option to bypass the qualitative assessment for any reporting unit in any period, and proceed directly to performing the first step of the two-step goodwill impairment test. The Company conducts its annual impairment test as of July 31 of each year. In 2017, 2016 and 2015, the Company performed a qualitative assessment that indicated the fair value of each of its reporting units is greater than its carrying amount. In conjunction with the sale of the creosote business on January 16, 2015, the Company allocated goodwill of approximately $0.7 million that was previously a part of the wood treating chemicals reporting unit to the assets disposed of in the sale. Asset retirement obligation — The Company measures asset retirement obligations based upon the applicable accounting guidance, using certain assumptions including estimates for decommissioning, dismantling and disposal costs. In the event that operational or regulatory issues vary from management’s estimates, the Company could incur additional significant charges to income and increases in cash expenditures related to those costs. Certain conditional asset retirement obligations related to facilities have not been recorded in the consolidated financial statements due to uncertainties surrounding the ultimate settlement date and estimate of fair value related to a legal obligation to perform an asset retirement activity. When a reasonable estimate of the ultimate settlement can be made, an asset retirement obligation is recorded and such amounts may be material to the consolidated financial statements in the period in which they are recorded. In conjunction with its decision to exit the Bay Point facility, in fiscal year 2014 the Company recognized $3.7 million in asset retirement obligations related to the decommissioning, decontamination, and dismantling costs for which it is obligated under its manufacturing agreement. See Note 14. Impairment of Long-Lived Assets — Long-lived assets, including property, plant and equipment, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. The determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the use of the asset and its disposition. The measurement of an impairment loss for long-lived assets, where management expects to hold and use the asset, are based on the asset’s estimated fair value. Long-lived assets to be disposed of are reported at the lower of carrying amount or fair value. There were no impairment charges in fiscal years 2017, 2016 or 2015. See Notes 5 and 7. Revenue Recognition — The Company’s chemical products are sold in the open market and revenue is recognized when risk of loss and title to the products transfers to customers, the price to the buyer is fixed or determinable and recoverability is reasonably assured. For consignment sales, the revenues are recognized when the customer uses the product for their intended use. The Company also recognizes service revenue in connection with technical support services and chemicals delivery and handling at customer facilities. Revenue is recognized as those services are provided. To the extent that customers are eligible for rebates, they are estimated and recognized as the sales are made. Cost of Sales — Cost of sales includes inbound freight charges, purchasing and receiving costs, inspection costs and internal transfer costs. In the case of products manufactured by the Company, direct and indirect manufacturing costs, such as depreciation and property, plant and equipment, and associated plant administrative expenses are included as well as laid-in cost of raw materials consumed in the manufacturing process. Distribution Expenses — These expenses include outbound freight, depreciation, storage and handling expenses and other miscellaneous costs (including depreciation and amortization) associated with product storage, handling and distribution. Selling, General and Administrative Expenses — These expenses include selling expenses, corporate headquarters’ expenses, depreciation, amortization of intangible assets and environmental regulatory support expenses. Shipping and Handling Costs — Shipping and handling costs are included in cost of sales and distribution expenses. Inbound freight charges and internal transfer costs are included in cost of sales. Product storage and handling costs and the cost of distributing products to the Company’s customers are included in distribution expenses. Income Taxes — The Company follows the asset and liability method of accounting for income taxes in accordance with current accounting standards. Under this method, deferred income taxes are recorded based upon the differences between the financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws in effect at the time the underlying assets or liabilities are recovered or settled. When the Company's earnings from foreign subsidiaries are considered to be indefinitely reinvested, no provision for United States income taxes is made for these undistributed earnings. If any of the subsidiaries have a distribution of earnings in the form of dividends or otherwise, the Company would be subject to both United States income taxes (subject to an adjustment for foreign tax credits) and withholding taxes payable to the various foreign countries. The Company records a valuation allowance in the reporting period when management believes that it is more likely than not that any deferred tax asset created will not be realized. Management will continue to evaluate the appropriateness of the valuation allowance in the future based upon the operating results of the Company. The calculation of the Company’s tax assets and liabilities involves assessing the uncertainties regarding the application of complex tax regulations. The Company recognizes liabilities for tax expenses based on its estimate of whether, and the extent to which, additional taxes will be due. If the Company determines that payment of these amounts is unnecessary, the Company reverses the liability and recognizes a tax benefit during the period in which it determines that the liability is no longer necessary. The Company records an additional charge in its provision for taxes when the determination is made. See Note 6. Earnings Per Share — Basic earnings per common share amounts are calculated using the weighted average number of common shares outstanding during each period. Diluted earnings per share assumes the issuance of restricted stock under time-based and performance-based awards, and the exercise of stock options having exercise prices less than the average market price during the applicable period, using the treasury stock method. Time-based and performance-based awards have no liquidation or dividend rights and are thus are not considered participating securities. Foreign Currency Translation — The functional currency of the Company’s operations in Mexico is the U.S. Dollar. As a result, certain income statement items, such as sales or expenses denominated in pesos are re-measured at the average monthly exchange rate for the dates those items were recognized. Foreign currency transaction gains and losses are included in the statement of operations as incurred. These gains and losses were nominal in fiscal years 2017, 2016 and 2015. The Company’s other international operations are in Europe, Singapore and Canada, and use local currencies as the functional currency, including the Great Britain Pound, Euro, Singapore Dollar and Canadian Dollar. The translation adjustment resulting from currency translation of the local currency into the reporting currency (U.S. Dollar) is included as a separate component of stockholders’ equity. The assets and liabilities have been translated from local currencies into U.S. Dollars using exchange rates in effect at the balance sheet dates. Results of operations have been translated using the average exchange rates during the period. Foreign currency translation resulted in a translation adjustment gains/(losses) of $2.5 million, $(2.6) million and $(10.2) million in fiscal years 2017, 2016 and 2015, respectively, each of which are included in accumulated other comprehensive income/(loss) in the consolidated balance sheets. Stock-Based Compensation — The Company’s stock-based compensation expense is based on the fair value of the award measured on the date of grant. For stock option awards, the grant date fair value is measured using a Black-Scholes option valuation model. For stock awards, the Company’s stock price on the date of the grant is used to measure the grant date fair value. For awards of stock which are based on a fixed monetary value, the grant date fair value is based on the monetary value. Stock-based compensation costs are recognized as an expense over the requisite service period of the award using the straight-line method. Recent Accounting Standards The Company has considered all recently issued accounting standards updates and SEC rules and interpretive releases. In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2017‑01, “Business Combinations (Topic 805): Clarifying the Definition of a Business” (“ASU 2017-01”). ASU 2017-01 affects all companies and other reporting organizations that must determine whether they have acquired or sold a business. For public companies, the amendments are effective for annual periods beginning after December 15, 2017, including interim periods within those periods. The Company will adopt the standard on August 1, 2018 and will apply the guidance to acquisitions occurring after the effective date to determine whether such acquisitions meet the definition of a business. In January 2017, the FASB issued ASU No. 2017-04, “Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”). To simplify the subsequent measurement of goodwill, ASU 2017-04 eliminates step two from the goodwill impairment test. A public business entity should adopt the amendments for its annual goodwill impairment tests or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The guidance could impact the Company if a goodwill impairment is identified after adoption. The Company has a significant amount of goodwill as a result of recent transactions. The Company plans to adopt the guidance effective August 1, 2017. In August 2016, the FASB issued ASU No. 2016‑18, “Statement of Cash Flows (Topic 230): Restricted Cash” (“ASU 2016‑18”). ASU 2016-18 is intended to address diversity in practice that exists in the classification and presentation of changes in restricted cash on the statement of cash flows The amendments require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. In August 2016, the FASB issued ASU No. 2016‑15, “Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments” (“ASU 2016-15”). ASU 2016-15 is intended to address how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This update addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. The amendments are effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted. The Company early adopted ASU 2016-15 at the beginning of fiscal year 2017, but there was no impact on the consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments." ASU 2016-13 changes the impairment model for most financial assets and certain other instruments, including trade and other receivables, held-to-maturity debt securities and loans, and requires entities to use a new forward-looking expected loss model that will result in the earlier recognition of allowance for losses. In March 2016, the FASB issued ASU No. 2016-09, “Compensation—Stock Compensation (Topic 718), Improvements to Employee Share-based Payment Accounting.” ASU 2016-09 simplifies several aspects of the accounting for employee share-based payment transactions for both public and nonpublic entities, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. ASU 2016-09 is effective for annual periods beginning after December 15, 2017, and interim periods within annual periods beginning after December 15, 2018. Early adoption is permitted. The Company elected to early adopt this ASU beginning in the second quarter of fiscal year 2017, and has applied the effects of the adoption from the beginning of the annual period of adoption. Beginning in the three and six month periods ended January 31, 2017, stock-based compensation excess tax benefits or deficiencies are reflected in the consolidated statements of income as a component of the provision for income taxes, whereas they previously were recognized in additional paid in capital on the consolidated balance sheets. Additionally, the consolidated statements of cash flows presents excess tax benefits as an operating activity for the year ended July 31, 2017, while the historical periods have not been adjusted, which is consistent with the adoption of this portion of the standard on a prospective basis. Further, tax cash payments made on an employee’s behalf for shares withheld upon vesting or settlement are required to be presented as a financing activity, and the consolidated statement of cash flows for the year ended July 31, 2017 reflect these amounts as payments related to stock-based awards. Tax cash payments made on an employee’s behalf for shares withheld upon vesting or settlement for the years ended July 31, 2016 and 2015 were immaterial to the consolidated financial statements. Additionally, the Company did not have any unrecognized tax benefits related to its share-based payment awards at the date of adoption. Finally, the Company has elected to account for forfeitures as they occur, rather than estimate expected forfeitures. Historically, estimated forfeitures were immaterial to the consolidated financial statements. The amendments in the standard that required use of a modified retrospective transition method did not materially impact the Company. Therefore, the Company did not recognize a cumulative-effect adjustment to retained earnings upon adoption as of August 1, 2016. See note 6 for information regarding the additional impact on the consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842),” which is intended to increase transparency and comparability of accounting for lease transactions. The ASU will require all leases with lease terms exceeding one year to be recognized on the balance sheet as lease assets and lease liabilities and will require both quantitative and qualitative disclosures regarding key information about leasing arrangements. Lessor accounting is largely unchanged. The guidance is effective beginning January 1, 2019 with an option to early adopt. The Company is currently reviewing its significant lease arrangements to assess the potential impact on its consolidated financial statements. The Company plans to adopt the guidance effective August 1, 2019. In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers”, which requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. The new guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. In August 2015, the FASB voted to delay the effective date of ASU 2014-09 by one year to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Earlier application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. Adoption can occur using one of two prescribed transition methods. In March, April and December 2016, the FASB issued ASU 2016-08, “Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net)”, ASU 2016-10, “Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing,” and ASU 2016-20, “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers,” which provide supplemental adoption guidance and clarification to ASC 2014-09. ASU 2016-08, ASU 2016-10 and ASU 2016-20 must be adopted concurrently with the adoption of ASU 2014-09. The Company is currently reviewing its revenue contracts to assess the potential impact on its consolidated financial statements. The Company plans to adopt the revenue guidance effective August 1, 2018, although it has not yet selected a transition method. The Company currently does not expect the adoption to have a material impact on its consolidated financial statements and related disclosures. Further, it does not expect to change the manner or timing of recognizing revenue as a majority of its revenue transactions are recognized when product is delivered.

Acquisitions

Acquisitions	12 Months Ended
	Jul. 31, 2017
Business Combinations [Abstract]
Acquisitions	2. ACQUISITIONS On June 15, 2017, the Company completed the acquisition of Flowchem Holdings LLC (“Flowchem”). The consideration paid on the closing date was the purchase price of $495.0 million plus $11.4 million for cash acquired. Based in Waller, Texas, Flowchem is The Company has accounted for the purchase using the acquisition method of accounting for business combinations. Accordingly, the purchase price has been allocated to the underlying assets and liabilities in proportion to their respective fair values Cash $ 11,445 Accounts receivable 11,280 Inventory 9,310 Other current assets 499 Property, plant and equipment 19,665 Intangible assets: Customer relationships 214,882 Trade names and trademark 28,951 Proprietary manufacturing process 39,245 Total assets 335,277 Current liabilities 3,132 Deferred tax liability 25,046 Net identifiable assets acquired $ 307,099 Goodwill 199,346 Fair value of net assets acquired $ 506,445 This purchase price allocation is preliminary and is pending the finalization of the third-party valuation analysis. The fair value of the accounts receivable acquired was $11.3 million, equivalent to the amount the Company expects to be collected. The $199.3 million of goodwill was assigned to the performance materials segment, and the Company expects $152.6 million of goodwill to be tax deductible. The goodwill is primarily attributable to the assembled workforce of Flowchem and the allocation of proceeds in excess of the fair value of net identifiable assets acquired. Final accounting is incomplete for the customer relationships, trade names and trademark, proprietary manufacturing process, inventories and goodwill acquired June 15, 2017, as the Company has not yet completed the detailed valuation analyses as of July 31, 2017. Flowchem was consolidated into our financial statements starting on its acquisition date. The net sales and net income of Flowchem recorded in our consolidated statement of income from its acquisition date through July 31, 2017, were $9.4 million and $(0.3) million, respectively. The following unaudited pro forma financial information presents our results as if the Flowchem acquisition had occurred at the beginning of fiscal year 2016 (in thousands, except for per share amounts): Year Ended July 31, 2017 2016 Net sales $ 410,243 $ 375,841 Net income 23,336 11,869 Earnings per share Basic $ 1.96 $ 1.01 Diluted 1.90 1.00 The unaudited pro forma information presented above is for information purposes only and is not necessarily indicative of the operating results that would have occurred had the Flowchem acquisition been consummated at the beginning of the period, nor is it necessarily indicative of future operating results. The unaudited supplemental pro forma financial information includes adjustments reflecting (i) estimated annual depreciation and amortization of approximately $30.4 million and $30.2 million in each of fiscal years 2017 and 2016, respectively, that would have been charged assuming the fair value adjustments to property, plant and equipment and intangible assets had been applied from August 1, 2015; (ii) estimated annual interest expense of approximately $30.9 million and $30.4 million in each of fiscal years 2017 and 2016, respectively, including the amortization and deferred financing costs and original issue discount that would have been recorded as a result of the debt issued to finance the Flowchem acquisition; (iii) the elimination of transaction-related costs of $1.7 million in fiscal year 2017; and (iv) an adjustment to tax-effect the aforementioned unaudited pro forma adjustments using an estimated aggregate statutory income tax rate of the jurisdiction to which the above adjustments relate. The unaudited pro forma amounts do not include any potential synergies, cost savings or other expected benefits of the Flowchem acquisition. On February 1, 2017, the Company completed the acquisition of the assets of Sealweld Corporation (“Sealweld”), a privately held corporation organized under the laws of the Province of Alberta, Canada, for CAD$22.3 million in cash (or approximately US$17.2 million, at an exchange rate of 0.77 CAD$ to US$ at February 1, 2017), which included CAD$5.5 million (or approximately US$4.2 million, at an exchange rate of 0.77 CAD$ to US$ at February 1, 2017) for estimated working capital. Sealweld is based in Calgary, Alberta, Canada, with additional facilities in the United States and the United Arab Emirates. Sealweld is a global supplier of high-performance products and services for industrial valve and actuator maintenance, including lubricants, sealants, cleaners, valve fittings, tools and equipment. Additionally, Sealweld provides routine and emergency valve maintenance services and technician training for many of the world’s largest pipeline operators. The Company completed the acquisition by borrowing $17.0 million on the revolving loan under its revolving credit facility. See Note 8 for further discussion of the Company’s revolving credit facility. Sealweld is included in the performance materials segment. The Company expensed transaction and acquisition-related costs of approximately $0.8 million in the fiscal year ended July 31, 2017, which is included in selling, general and administrative expenses on the Company’s consolidated statement of income. The following table summarizes the acquired assets and assumed liabilities and the acquisition accounting for the fair value of the assets and liabilities recognized in the consolidated balance sheet at July 31, 2017 (in thousands): Cash $ 69 Accounts receivable 2,937 Inventory 2,350 Other assets 38 Property, plant and equipment, net 4,192 Intangible assets Trade name/trademark 2,185 Non-compete agreements 2,254 Customer relationships 2,348 Total assets acquired $ 16,373 Current liabilities 1,172 Deferred tax liability 681 Net identifiable assets acquired 14,520 Goodwill 2,671 Fair value of net assets acquired $ 17,191 The fair value of the accounts receivable acquired was $2.9 million, equivalent to the contractual amount acquired. The Company expects all acquired accounts receivable to be collected. The $2.7 million of goodwill was assigned to the performance materials segment, and the Company expects $0.2 million of goodwill to be tax deductible. The goodwill is primarily attributable to the assembled workforce of Sealweld. On April 4, 2016, the Company completed the acquisition of Nagase Finechem Singapore (Pte) Ltd. (“NFC”), a Singapore‑based manufacturer of electronic chemicals, for a cash purchase price of $2.9 million, including $1.1 million of estimated net working capital. NFC’s five-acre Singapore site comprises a manufacturing and packaging facility, warehouse, laboratory and cleanroom. The acquired company manufactures wet process chemicals, including solvents, acids and custom blends for the liquid crystal display, electronics and semiconductor markets, and provides recycling and refining services for certain customers. The Company completed the acquisition by borrowing $2.8 million on the revolving loan under its revolving credit facility. See Note 8 for further discussion of the Company’s revolving credit facility. The Company expensed transaction and acquisition-related costs of approximately $0.2 million in the fiscal quarter ended April 30, 2016, which is included in selling, general and administrative expenses on the Company’s consolidated statement of income. The following table summarizes the acquired assets and assumed liabilities and the acquisition accounting for the fair value of the assets and liabilities recognized in the consolidated balance sheets at July 31, 2016 (in thousands): Cash $ 228 Accounts receivable 1,862 Other assets 101 Property, plant and equipment, net 3,242 Intangible assets Licensing agreement 73 Toll manufacturing agreement 255 Total assets acquired $ 5,761 Total current liabilities assumed 1,028 Fair value of net assets acquired $ 4,733 The aggregate fair value of the working capital (assets and liabilities), property, plant and equipment and intangible assets acquired were determined by management to exceed the consideration paid for the acquisition, resulting in a bargain purchase gain under GAAP. In reaching that conclusion, management noted that there were no other liabilities being assumed in connection with the acquisition, including no environmental liabilities. Management believes the seller had determined to perform the transaction as part of an overall repositioning of its business. Based on these considerations, the Company recorded a gain of $1.8 million in connection with the bargain purchase during the year ended July 31, 2016. The pro forma impact on consolidated results is immaterial for the year ended July 31, 2016. On May 1, 2015, the Company completed the acquisition of Valves Incorporated of Texas, a privately held Texas corporation, pursuant to the terms of a previously announced Agreement and Plan of Merger. That acquired company manufactures and distributes industrial sealants and lubricants, primarily to the oil and gas storage, pipeline and gas distribution markets, as well as related products, such as lubrication equipment and fittings. In addition to the lubricants business, it also owned 606,875 shares of the Company’s common stock. Fred C. Leonard III, a director of the Company, was the majority shareholder, president and chief executive officer of Valves Incorporated of Texas. The aggregate merger consideration paid to the former shareholders of Valves Incorporated of Texas was 606,875 shares of the Company’s common stock plus $23.7 million in cash. The 606,875 shares of the Company previously owned by Valves Incorporated of Texas were cancelled as of the time of the merger, and no additional net shares of the Company were issued as a result of the merger. Of the $23.7 million cash consideration, $1.0 million of the purchase price was retained as a holdback to satisfy post-closing inventory adjustments and potential indemnity claims. The $0.5 million of the holdback related to inventory adjustments was released in August 2015. The remaining $0.5 million of the holdback for potential indemnity claims was released in November 2016. The Company completed the acquisition by borrowing $23.5 million on the revolving loan under its revolving credit facility. At the closing of the merger, Valves Incorporated of Texas merged into Val-Tex. The Company accounted for the acquisition under the acquisition method of accounting in accordance with GAAP. The Company expensed transaction and acquisition-related costs of approximately $0.5 million in fiscal year 2015, which is included in selling, general and administrative expenses on the Company’s consolidated statement of income. The following table summarizes acquired assets and liabilities and the acquisition accounting for the fair value of the assets and liability recognized in the consolidated balance sheets at the acquisition date of the industrial lubricants and sealants business (in thousands): Inventory $ 1,900 Other current assets 15 Property, plant and equipment 482 Intangible assets: Customer relationships 10,291 Trade name and trademark 2,885 Proprietary manufacturing process 2,808 Other 152 Total intangible assets 16,136 Deferred tax liability - noncurrent 6,213 Net assets acquired $ 12,320 Goodwill 11,387 Total purchase consideration $ 23,707 The pro forma impact on consolidated results had the acquisition of Valves Incorporated of Texas occurred as of the beginning of fiscal year 2015 is immaterial.

Cash, Cash Equivalents and Rest

Cash, Cash Equivalents and Restricted Cash	12 Months Ended
	Jul. 31, 2017
Cash And Cash Equivalents [Abstract]
Cash, Cash Equivalents and Restricted Cash	3. CASH, CASH EQUIVALENTS AND RESTRICTED CASH The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same amounts shown in the consolidated statements of cash flows: July 31, July 31, July 31, Current Presentation 2017 2016 2015 Cash and cash equivalents $ 20,708 $ 12,428 $ 7,517 Restricted cash — 1,000 1,000 Total cash, cash equivalents and restricted cash $ 20,708 $ 13,428 $ 8,517 The Company’s restricted cash includes cash balances which are legally or contractually restricted to use. The Company’s restricted cash is included in other long term assets as of July 31, 2016 and includes proceeds that were placed in escrow in connection with the sale of the animal health business in fiscal year 2013. These proceeds were released from escrow in February 2017.

Inventories

Inventories	12 Months Ended
	Jul. 31, 2017
Inventory Disclosure [Abstract]
Inventories	4. INVENTORIES Inventories are summarized as follows at July 31, 2017 and 2016 (in thousands): 2017 2016 Raw materials and supplies $ 9,124 $ 7,429 Work in process 884 1,195 Supplies 3,763 968 Finished products 33,341 28,463 Less reserve for inventory obsolescence (630 ) (654 ) Inventories, net $ 46,482 $ 37,401

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Jul. 31, 2017
Property Plant And Equipment [Abstract]
Property, Plant and Equipment	5. PROPERTY, PLANT AND EQUIPMENT Property, plant, and equipment and related accumulated depreciation and amortization are summarized as follows at July 31, 2017 and 2016 (in thousands): 2017 2016 Land $ 12,632 $ 9,765 Buildings and improvements 50,973 39,974 Equipment 106,379 88,470 Leasehold improvements 2,755 2,460 172,739 140,669 Less accumulated depreciation and amortization (76,974 ) (65,958 ) 95,765 74,711 Construction-in-progress 9,670 5,028 Property, plant and equipment, net (1) $ 105,435 $ 79,739 (1) In fiscal year 2016, as part of the Company’s ongoing review of its Milan production facilities, the Company determined that certain other facilities had excess capacity sufficient to absorb the manufacturing operations of one of its Milan plants. As a result, the Company committed to sell properties with a total estimated fair value, less costs to sell, of approximately $4.3 million at July 31, 2016. Assets held for sale are included in Prepaid expenses and other in Current assets. The Company obtained an updated third party market analysis on the property and has increased marketing and advertising efforts and expects the sale of the property to be completed during fiscal year 2018. The fair value measurements were based on recent valuation appraisals.

Income Taxes

Income Taxes	12 Months Ended
	Jul. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	6. INCOME TAXES The Company is subject to United States federal, state and foreign taxes on its operations. The geographical sources of income before income taxes for each of the three years ended July 31 are as follows (in thousands): 2017 2016 2015 United States $ 27,642 $ 28,820 $ 20,442 Foreign 4,800 (590 ) (1,558 ) Income before income taxes $ 32,442 $ 28,230 $ 18,884 The components of income tax expense/(benefit) for the years ended July 31 consisted of the following (in thousands): 2017 2016 2015 Current: Federal $ 7,620 $ 7,900 $ 9,176 Foreign 511 166 (127 ) State 1,588 1,275 1,214 9,719 9,341 10,263 Deferred: Federal (1,052 ) 358 (3,660 ) Foreign 160 (261 ) 293 State (18 ) 117 (150 ) (910 ) 214 (3,517 ) Total $ 8,809 $ 9,555 $ 6,746 Deferred income taxes are provided on all temporary differences between financial and taxable income. The following table presents the components of the Company’s deferred tax assets and liabilities at July 31, 2017 and 2016 (in thousands): 2017 2016 Non-current deferred tax assets Inventory $ 933 $ 571 Net operating loss 1,233 2,061 Employee benefits 2,322 2,059 Deferred compensation 3,922 3,171 Accrued liabilities 43 498 Other 982 1,062 Less valuation allowance (1,768 ) (2,895 ) Total non-current deferred tax assets $ 7,667 $ 6,527 Non-current deferred tax liabilities: Difference in amortization basis of intangibles $ (34,851 ) $ (11,115 ) Difference in depreciable basis of property (6,722 ) (4,928 ) Other (767 ) (432 ) Total non-current deferred tax liabilities (42,340 ) (16,475 ) Net non-current deferred tax liability $ (34,673 ) $ (9,948 ) As of July 31, 2017, the Company had $3.0 million of foreign net operating loss carryforwards that do not expire, and $1.0 million of U.S. federal net operating loss carryforward that expires in 2034. The Company records provisions for uncertain tax provisions in accordance with GAAP, which prescribes the minimum recognition threshold that a tax position is required to meet before being recognized in the financial statements. The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. The statute of limitations remains open for the fiscal year ended July 31, 2014 and forward for United States federal income taxes and fiscal year ended July 31, 2012 and forward for state tax jurisdictions. In fiscal year 2017, the Company’s subsidiary in Italy was successful in its appeal of a case related to income tax assessments for the three year period ended July 31, 2011, and settled litigation with the local taxing authority related to the registration tax assessment for the December 2007 purchase of the electronic chemicals business in Italy. During fiscal year 2017, the Company reversed its liability for its uncertain tax position in Italy as of July 31, 2016 of $0.1 million. The Company does not intend to permanently reinvest its unremitted foreign earnings associated with its Mexico operations outside the United States. Except for Mexico, the Company maintains its foreign earnings from the remaining foreign subsidiaries to be permanently reinvested. For the year ended July 31, 2017, stock-based compensation excess tax benefits of $1.0 million were reflected in the consolidated statements of income as a component of the provision for income taxes as a result of the early adoption of ASU 2016‑09. See note 1 for more details regarding the adoption of ASU 2016-09. The following table accounts for the differences between the actual tax provision, and the amounts obtained by applying the applicable statutory United States federal income tax rate of 35% to income from continuing operations before income taxes for each of the years ended July 31, 2017, 2016, and 2015, respectively (in thousands): 2017 2016 2015 Income taxes at the federal statutory rate $ 11,354 $ 9,881 $ 6,610 Effect of foreign operations (198 ) 485 182 Change in valuation allowance (1,218 ) 311 648 Adjustments to foreign operations — — 1,148 Effects of foreign currency fluctuations 131 (330 ) (953 ) State income taxes, net of federal income tax effect 1,015 969 639 Production deduction and tax credits (1,217 ) (1,473 ) (1,182 ) Stock-based compensation (964 ) — — Acquisition related cost 151 85 125 Flowchem reorganization (584 ) — — Other 339 (373 ) (471 ) Total $ 8,809 $ 9,555 $ 6,746 The Company’s effective tax rate decreased in fiscal year 2017 primarily due to $1.0 million of stock-based compensation excess tax benefits, a change in valuation allowance of $1.2 million in Singapore and Italy, a $0.9 million tax benefit from a U.S. domestic manufacturing deduction and a deferred tax benefit of $0.6 million realized as a result of the reorganization of the legal structure of the entities acquired in the Flowchem acquisition. The change of valuation allowance in Singapore and Italy is due to the Company’s profitable operations in Singapore and Italy in fiscal year 2017. Uncertain Tax Positions The Company is subject to income taxes in the U.S. (federal and state) and numerous foreign jurisdictions. Significant judgment is required in evaluating the Company’s tax positions and determining its provision for income taxes. There are transactions and calculations for which the ultimate tax determination is uncertain. The Company establishes reserves for tax-related uncertainties based on estimates of whether, and the extent to which, additional taxes will be due or may be challenged despite our belief that our tax return positions are supportable. The Company accounts for uncertain tax positions in accordance with FASB ASC 740, which prescribes the minimum recognition threshold a tax position taken or expected to be taken in a tax return is required to meet before being recognized in the financial statements. The following table summarizes the activity related to our gross unrecognized tax benefits (in thousands): Balance at July 31, 2016 $ 1,254 Increases related to prior years positions 129 Decreases related to prior year positions (320 ) Settlements (98 ) Balance at July 31, 2017 $ 965 The Company does not anticipate any significant changes to the unrecognized tax benefits within the next twelve months. The Company recognizes interest and penalties related to uncertain tax positions within the provision for income taxes in the consolidated statements of income. The Company recognized $0.1 million in penalties and interest related to unrecognized tax benefits for the years ended July 31, 2017 and 2016.

Intangible Assets

Intangible Assets	12 Months Ended
	Jul. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	7. INTANGIBLE ASSETS Intangible assets subject to amortization are amortized over their estimated useful lives which are between five and twenty years. Intangible assets are summarized as follows (in thousands): Number of Years Weighted July 31, 2017 Average Amortization Period Original Cost Accumulated Amortization Foreign Currency Translation Carrying Amount Intangible assets subject to amortization (range of useful life): Electronic chemicals-related contracts (5-8 years) 6.6 $ 2,204 $ (1,362 ) $ (107 ) $ 735 Electronic chemicals-related trademarks and patents (10-15 years) 12.0 117 (97 ) (1 ) 19 Electronic chemicals-value of product qualifications (5-15 years) 14.1 14,100 (5,479 ) (841 ) 7,780 Performance materials-customer relationships (15-20 years) 19.7 227,521 (3,244 ) 54 224,331 Performance materials-proprietary manufacturing process (15 years) 15.0 39,245 (322 ) — 38,923 Performance materials-penta product registrations (15 years) 15.0 754 — — 754 Performance materials-other related contracts (5 years) 5.0 2,406 (289 ) 54 2,171 Electronic chemicals - Tolling/License Agreements (1-3 years) 1.4 328 (281 ) (6 ) 41 Total intangible assets subject to amortization 13.6 $ 286,675 $ (11,074 ) $ (847 ) $ 274,754 Intangible assets not subject to amortization: Performance materials-penta product registrations 8,765 Performance materials-related trade name and trademark 34,074 Performance materials-proprietary manufacturing process 2,808 Total intangible assets not subject to amortization 45,647 Total intangible assets, net $ 320,401 The following table presents the estimated aggregate amounts of amortization expense for the succeeding five years and thereafter, related to intangible assets as of July 31, 2017 (in thousands): 2018 2019 2020 2021 2022 Thereafter Total estimated aggregate amortization expense $ 15,876 $ 15,863 $ 15,785 $ 15,615 $ 15,486 $ 196,129 Number of Years Weighted July 31, 2016 Average Amortization Period Original Cost Accumulated Amortization Foreign Currency Translation Carrying Amount Intangible assets subject to amortization (range of useful life): Electronic chemicals-related contracts (5-8 years) 6.6 $ 2,204 $ (1,104 ) $ (117 ) $ 983 Electronic chemicals-related trademarks and patents (10-15 years) 12.0 117 (87 ) — 30 Electronic chemicals-value of product qualifications (5-15 years) 14.1 14,100 (4,616 ) (831 ) 8,653 Performance materials-customer relationships (15 years) 15.0 10,291 (858 ) — 9,433 Performance materials-other related contracts (5 years) 5.0 152 (38 ) — 114 Electronic chemicals - Tolling/License Agreements (1-3 years) 1.4 328 (93 ) — 235 Total intangible assets subject to amortization 13.6 $ 27,192 $ (6,796 ) $ (948 ) $ 19,448 Intangible assets not subject to amortization: Performance materials-penta product registrations 8,765 Performance materials-related trade name and trademark 2,885 Performance materials-proprietary manufacturing process 2,808 Total intangible assets not subject to amortization 14,458 Total intangible assets, net $ 33,906 Assets acquired in the acquisition of the industrial lubricants business in May 2015 included $10.3 million of customer relationships and $0.2 million of non-compete agreements, which are being amortized over fifteen and five years, respectively. Additionally, in connection with the acquisition, the Company recorded $11.4 million of goodwill (non-deductible for tax). Assets acquired in the acquisition of the UPC subsidiaries in May 2013 included $12.8 million of product qualifications and $1.9 million of non-compete agreements, which are being amortized over fifteen and seven years, respectively. Total amortization expense related to intangible assets was approximately $4.3 million, $2.0 million and $1.7 million for the fiscal years ended July 31, 2017, 2016 and 2015, respectively. The following table presents carrying value of goodwill by operating segment as of July 31, 2017, 2016 and 2015 (in thousands): Performance Materials Electronic Chemicals Total Balance as of July 31, 2015 $ 14,469 $ 7,939 $ 22,408 Purchase price adjustment 35 — 35 Foreign currency translation adjustment — (215 ) (215 ) Balance as of July 31, 2016 14,504 7,724 22,228 Business acquisition - Sealweld 2,671 — 2,671 Business acquisition - Flowchem 199,346 — 199,346 Foreign currency translation adjustment 7 139 146 Balance as of July 31, 2017 $ 216,528 $ 7,863 $ 224,391

Long-Term Obligations

Long-Term Obligations	12 Months Ended
	Jul. 31, 2017
Debt Disclosure [Abstract]
Long-Term Obligations	8. LONG-TERM OBLIGATIONS Working Capital On June 15, 2017 the Company entered into a credit agreement (the “Credit Agreement”) providing for a seven year syndicated senior secured term loan of $550.0 million (the “Term Loan”) and a five year senior secured revolving credit facility of $50.0 million (the “Revolving Loan”), as reported on the Form 8-K filed on June 15, 2017. At July 31, 2017, the Company had $540.0 million outstanding under the Term Loan, with up to an additional $47.1 million of additional borrowing capacity under the Revolving Loan after giving effect to a reduction of $2.9 million reserved for outstanding letters of credit. Long Term Obligations The Company’s long-term debt and current maturities as of July 31, 2017 and 2016 consisted of the following (in thousands): July 31, 2017 July 31, 2016 Senior secured debt: Term loan, maturing on June 15, 2024, variable interest rates based on LIBOR plus 4.25% at July 31, 2017 $ 540,000 $ — Revolving loan facility, maturing on October 9, 2019, variable interest rates based on LIBOR plus 1.0% at July 31, 2016 — 35,800 Total debt 540,000 35,800 Current maturities of long-term debt (3,167 ) — Unamortized debt issuance costs and original issue discount (13,731 ) — Long-term debt, net of current maturities $ 523,102 $ 35,800 In October 2014, the Company entered into a second amended and restated credit agreement providing for a revolving credit facility of $150.0 million. At July 31, 2016, the amount outstanding under that revolving credit facility was $35.8 million and advances bore interest at 1.496%. As described above, on June 15, 2017 the Company entered into the Credit Agreement with KeyBank National Association, as agent, KeyBanc Capital Markets Inc., HSBC Securities (USA) Inc., and JPMorgan Chase Bank, N.A., as joint lead arrangers and joint bookrunners, and ING Capital LLC, as documentation agent. The proceeds from the Term Loan under the Credit Agreement were used to finance the acquisition of Flowchem, pay the costs and expenses related to the acquisition of Flowchem, and to repay in full the $31.0 million then outstanding indebtedness under the Company’s prior revolving credit facility. The Company did not draw upon the Revolving Loan at the closing of the Credit Agreement. In connection with the refinancing, the Company charged to loss on the extinguishment of debt $0.4 million of unamortized debt issuance costs related to the Company’s prior revolving credit facility. The Term Loan under the Credit Agreement bears interest at a varying rate of LIBOR plus a margin based on net funded debt to adjusted EBITDA, as described in the table below. Ratio of Funded Debt to Adjusted EBITDA Margin Greater than 4.25 to 1.0 4.25 % Less than or equal to 4.25 to 1.0 4.00 % The Revolving Loan under the Credit Agreement bears interest at a varying rate of LIBOR plus a margin based on net funded debt to adjusted EBITDA, as described in the table below. Ratio of Funded Debt to Adjusted EBITDA Margin Greater than 4.25 to 1.0 3.50 % Greater than 3.75 to 1.0, but less than or equal to 4.25 to 1.0 3.25 % Less than 3.75 to 1.0 3.00 % Advances under the Term Loan bore interest at 5.409% as of July 31, 2017. There were no outstanding borrowings under the Revolving Loan as of July 31, 2017. The Company also incurs an unused commitment fee on the unused amount of commitments under the Revolving Loan of 0.50%. Loans under the Credit Agreement are secured by the Company’s assets, including stock in subsidiaries, inventory, accounts receivable, equipment, intangible assets, and real property. The Credit Agreement has restrictive covenants, including a covenant that the Company must maintain a consolidated net leverage ratio below 6.50 to 1.0 through the fiscal quarter ended April 30, 2018, which ratio is reduced each year thereafter by an amount set forth in the Credit Agreement, until the twelve months ended April 30, 2022, following which the Company must maintain a consolidated net leverage ratio below 4.00 to 1.0. As of July 31, 2017, the Company was in compliance with all covenants of the Credit Agreement. Principal payments due under long-term debt agreements as of July 31, 2017 for the fiscal years ended July 31 are as follows (in thousands): Total 2018 2019 2020 2021 2022 Thereafter Long-term debt $ 540,000 $ 3,167 $ 4,222 $ 4,222 $ 4,222 $ 4,222 $ 519,945

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Jul. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	9. COMMITMENTS AND CONTINGENCIES Contractual Obligations — The Company has non-cancelable operating leases for its office and warehouse facilities and certain transportation equipment and purchase obligations. Our obligations to make future payments under certain contractual obligations as of July 31, 2017 are summarized in the following table (in thousands): Total 2018 2019 2020 2021 2022 Thereafter Operating leases $ 20,671 $ 3,749 $ 3,345 $ 2,445 $ 1,618 $ 1,388 $ 8,126 Purchase obligations (1) 81,542 49,598 23,756 8,188 — — — Total $ 102,213 $ 53,347 $ 27,101 $ 10,633 $ 1,618 $ 1,388 $ 8,126 (1) Consists primarily of raw materials purchase contracts. These are typically not fixed price arrangements. The prices are based on the prevailing market prices. Rent expense relating to the operating leases was approximately $3.7 million, $3.1 million and $3.4 million in fiscal years 2017, 2016 and 2015, respectively. Environmental — The Company’s operations are subject to extensive federal, state and local laws, regulations and ordinances in the United States and abroad relating to the generation, storage, handling, emission, transportation and discharge of certain materials, substances and waste into the environment, and various other health and safety matters. Governmental authorities have the power to enforce compliance with their regulations, and violators may be subject to fines, injunctions or both. The Company must devote substantial financial resources to ensure compliance. Certain licenses, permits and product registrations are required for the Company’s products and operations in the United States, Mexico and other countries in which it does business. The licenses, permits and product registrations are subject to revocation, modification and renewal by governmental authorities. In the United States in particular, producers and distributors of penta are subject to registration and notification requirements under federal law (including under the Federal Insecticide Fungicide and Rodenticide Act (“FIFRA”), and comparable state law) in order to sell this product in the United States. Compliance with these requirements has had, and in the future will continue to have, a material effect on our business, financial condition and results of operations. The Company incurred expenses in connection with FIFRA research and testing programs of approximately $0.1, $0.4 million, and $1.0 million, in fiscal years 2017, 2016 and 2015, respectively. These costs are included in selling, general, and administrative expenses. Litigation and Other Contingencies — The Company is subject to contingencies, including litigation relating to environmental laws and regulations, commercial disputes and other matters. Certain of these contingencies are discussed below. The ultimate resolution of these contingencies is subject to significant uncertainty, and should the Company fail to prevail in any of them or should several of them be resolved against the Company in the same reporting period, these matters could, individually or in the aggregate, be material to the consolidated financial statements. The ultimate outcome of these matters, however, cannot be determined at this time, nor can the amount of any potential loss be reasonably estimated, and as a result except where indicated no amounts have been recorded in the Company’s consolidated financial statements. The Company records legal costs associated with loss contingencies as expenses in the period in which they are incurred. The EPA has listed the Star Lake Canal Superfund Site near Beaumont, Texas on the National Priorities List. The Company’s subsidiary, KMG-Bernuth, was notified in October 2014 that the EPA considered it to have potential liability under the Comprehensive Environmental Response, Compensation and Liability Act of 1980, as amended, also known as “CERCLA” in connection with this site by virtue of its relationship with certain alleged predecessor companies, including Idacon, Inc. (f/k/a Sonford Chemical Company). The EPA has estimated that the remediation will cost approximately $22.0 million. The Company and approximately seven other parties entered into an agreement with the EPA in September 2016 to complete a remedial design phase of the remediation of the site. The remediation work will be performed under a separate future agreement. Although the Company has not conceded liability, the Company established a reserve of $1.3 million in the third quarter of fiscal year 2015 in connection with the remedial design. As of July 31, 2017, the reserve remaining was $1.1 million. The Company is subject to federal, state, local and foreign laws and regulations and potential liabilities relating to the protection of the environment and human health and safety including, among other things, the cleanup of contaminated sites, the treatment, storage and disposal of wastes, the emission of substances into the air or waterways, and various health and safety matters. The Company expects to incur substantial costs for ongoing compliance with such laws and regulations. The Company may also face governmental or third-party claims, or otherwise incur costs, relating to cleanup of, or for injuries resulting from, contamination at sites associated with past and present operations. The Company accrues for environmental liabilities when a determination can be made that they are probable and reasonably estimable.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Jul. 31, 2017
Postemployment Benefits [Abstract]
Employee Benefit Plans	10. EMPLOYEE BENEFIT PLANS The Company has a defined contribution 401(k) plan in which all regular U.S. employees are eligible to participate. The Company makes matching contributions under this plan of up to 4% of a participant’s compensation up to the annual regulated maximum amounts. The first 3% of the employee contribution is matched at 100%. The next 2% of the employee contribution is matched at 50%. Company contributions to the plan totaled approximately $0.7 million, $0.6 million and $0.6 million in fiscal years 2017, 2016, and 2015, respectively. The locations in the United Kingdom and Singapore make contributions to retirement plans that function as defined contribution retirement plans. The Company’s contributions to those plans were approximately $2.0 million, $1.6 million and $1.3 million in fiscal years 2017, 2016 and 2015, respectively. The Company’s other long-term liabilities included approximately $1.5 million and $1.4 million as of July 31, 2017 and 2016, respectively, related to benefit obligations in connection with the France location included in the acquisition of the UPC business. This payable is an unfunded benefit obligation of the Company. The Company has an employee benefit arrangement for one of its former U.S. employees. As of July 31, 2017 and 2016, the associated liability was approximately $0.4 million and $0.4 million, respectively. The amount payable is a general obligation of the Company. Benefit payments under this arrangement, which the Company began paying in April 2013, will be paid for 10 years.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Jul. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share	11. EARNINGS PER SHARE Basic earnings per share have been computed by dividing net income by the weighted average shares outstanding. Diluted earnings per share have been computed by dividing net income by the weighted average shares outstanding plus potentially dilutive common shares. The following table presents information necessary to calculate basic and diluted earnings per share for periods indicated: Year Ended 2017 2016 2015 (Amounts in thousands, except per share data) Net income from continuing operations $ 23,633 $ 18,675 $ 12,138 Weighted average shares outstanding Weighted average shares outstanding — basic 11,885 11,719 11,673 Dilutive effect of stock awards 401 207 106 Weighted average shares outstanding — diluted 12,286 11,926 11,779 Basic earnings per share $ 1.99 $ 1.59 $ 1.04 Diluted earnings per share $ 1.92 $ 1.57 $ 1.03 Outstanding stock-based awards are not included in the computation of diluted earnings per share under the treasury stock method, if including them would be anti-dilutive. There was an average of 3,858 shares, 11,281 shares and 136 shares for the fiscal years ended 2017, 2016 and 2015, respectively, not included in the computation of diluted earnings per share because they were anti-dilutive.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Jul. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	12. STOCK-BASED COMPENSATION Stock-Based Incentive Plans The Company adopted a 2016 Long-Term Incentive Plan (“2016 LTI Plan”) in January 2016 and it was approved by the shareholders at the annual meeting in January 2016. The Company adopted a 2009 Long-Term Incentive Plan (“2009 LTI Plan”) in October 2009 and it was approved by the shareholders at the annual meeting in December 2009 (the 2016 LTI Plan and the 2009 LTI Plan are referred to collectively as the “LTI Plans”). The LTI Plans permit the granting of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock, restricted stock units, performance awards, dividend equivalent rights, and other awards. They are administered by the Board of Directors or a committee appointed by the Board of Directors. The Board has designated the Compensation and Development Committee as the administrator of the LTI Plans. Subject to the terms of the LTI Plans, the committee has the sole discretion to select the persons eligible to receive awards, the type and amount of incentives to be awarded, and the terms and conditions of awards. The committee also has the authority to interpret the LTI Plans, and establish and amend regulations necessary or appropriate for their administration. Any employee of the Company or a subsidiary of the Company or a director of the Company whose judgment, initiative, and efforts contributed or may be expected to contribute to the successful performance of the Company is eligible to participate. The maximum number of shares of the Company’s common stock that may be delivered pursuant to awards granted is 500,000 shares under the 2016 LTI Plan and 750,000 under the 2009 LTI Plan. No executive officer may receive in any calendar year stock options or stock appreciation rights, or awards that are subject to the attainment of performance goals, relating to more than 200,000 shares of common stock under the 2016 LTI Plan or 250,000 shares of common stock under the 2009 LTI Plan. At July 31, 2017, there were approximately 6,707 shares available for future grants under the 2016 LTI Plan and 65,730 shares available for future grants under the 2009 LTI Plan. Accounting for Stock-Based Compensation The Company recognized stock-based compensation costs of approximately $6.3 million, $4.8 million and $2.8 million, respectively, for the fiscal years ended July 31, 2017, 2016 and 2015, and the related tax benefits of $2.2 million, $1.7 million and $0.9 million, respectively, for the fiscal years ended July 31, 2017, 2016 and 2015. Stock-based compensation costs are recorded as selling, general and administrative expenses in the consolidated statements of income. The Company accounts for stock-based compensation costs at fair value measured on the date of grant of the award using a Black-Scholes option valuation model for stock option awards. Grant date fair value for stock awards is measured using the Company’s closing stock price on the date of grant of the stock awards where the award is based on a specific number of shares. Stock-based compensation costs are recognized as an expense over the requisite service period, generally the vesting period of the award, using the straight-line method. As of July 31, 2017, there was approximately $8.3 million of unrecognized compensation costs that are related to outstanding stock awards expected to be recognized over a weighted-average period of 1.8 years. In connection with the election of Christopher T. Fraser as the Company’s President and Chief Executive Officer on September 24, 2013, the Company granted Mr. Fraser (i) 50,000 shares of common stock and (ii) time-based restricted stock awards for 30,000 shares of common stock (vesting over five years). The Company also agreed to grant performance-based restricted stock awards for an aggregate of 70,000 shares of common stock in five equal installments beginning in fiscal year 2014. The Company recorded an expense of approximately $1.1 million in the first quarter of fiscal year 2014 for the grant date fair value of the 50,000 shares of common stock. A summary of activity for stock-awards is presented below. Performance Shares The Company grants performance-based Series 1 and Series 2 awards for shares to certain executives and employees. Stock-based compensation for the awards is recognized over the requisite service period beginning on the date of grant through the end of the measurement period based on the number of shares expected to vest under the awards at the end of the measurement period. The expected percent of vesting is determined using certain performance measures described below and is re-evaluated at the end of each reporting period through the end of the measurement period. At August 1, 2016, there were 328,731 non-vested performance share awards outstanding. During the fiscal year ended July 31, 2017, 180,851 performance share awards vested. As of July 31, 2017, the non-vested performance-based stock awards consisted of awards granted to certain executives and employees in fiscal years 2017 and 2016 as summarized below, reflecting the target number of shares under the awards. Date of Grant Series Award Target Award (Shares) Grant Date Fair Value Measurement Period Ending Actual or Expected Percentage Vesting (1) Shares Projected to Vest or Vested Fiscal Year 2017 Award 12/08/2016 Series 1 10,531 $ 34.95 07/31/2019 Forfeitures (2) (374 ) Total Series 1 10,157 188 % 19,063 04/28/2017 Series 4, Tranche 1 4,545 $ 52.55 07/31/2019 10/21/2016 Series 4, Tranche 1 44,337 $ 29.11 07/31/2019 Forfeitures (2) (4,957 ) Total Series 4, Tranche 1 43,925 100 % 43,925 04/28/2017 Series 4, Tranche 2 4,546 $ 52.55 07/31/2019 10/21/2016 Series 4, Tranche 2 44,337 $ 29.11 07/31/2019 Forfeitures (2) (4,957 ) Total Series 4 - Tranche 2 43,926 188 % 82,443 Fiscal Year 2016 Award 03/10/2016 Series 1 14,625 $ 21.89 10/31/2018 01/29/2016 Series 1 57,163 $ 21.80 10/31/2018 Forfeitures (2) (12,608 ) Total Series 1 59,180 200 % 118,360 01/19/2016 Series 3 82,938 $ 20.89 07/31/2020 133 % 110,584 (1) The percentage vesting for performance share awards is currently estimated at 188% and 200% of the target award for Series 1 awards granted in fiscal years 2017 and 2016, respectively, 133% of the target award for Series 3 awards granted in fiscal year 2016, and 100% and 188% of the target award for the first and second tranches, respectively, of the Series 4 awards granted in fiscal year 2017. (2) Forfeitures include Series 1 and Series 4 awards that were granted in fiscal years 2017 and 2016 to certain employees that were forfeited at the termination of their employment. Series 1: For the fiscal year 2017 and 2016 awards, vesting is subject to performance requirements composed of certain objectives including adjusted average annual return on invested capital and annual compound growth rate in the Company’s adjusted diluted earnings per share. These objectives are measured quarterly using the Company’s budget, actual results and long-term projections. For each of the Series 1 awards, the expected percentage of vesting is evaluated through July 31, 2017, and reflects the percentage of shares projected to vest for the respective awards at the end of their measurement periods. For the fiscal year 2017 and 2016 awards, shares vested under the awards may increase to a maximum of 200% of the target award on achievement of maximum performance objectives. Series 3: In fiscal year 2016 Mr. Fraser was awarded a performance-based Series 3 award for 82,938 shares of common stock (at target) having performance requirements related to cumulative revenue and total stockholder return. The measurement period for the fiscal year 2016 award begins on November 1, 2015 and the award vests one-third (1/3) at July 31, 2018, 2019 and 2020. The shares vested may increase to a maximum of 200% of the target award on achievement of maximum performance objectives. Series 4: For the fiscal year 2017 awards, each award includes two tranches. For the first tranche, vesting is subject to the achievement of an adjusted earnings before interest, taxes and depreciation and amortization (“EBITDA”) metric. For the second tranche, vesting is subject to performance requirements for adjusted average annual return on invested capital and annual compound growth rate in the Company’s adjusted diluted earnings per share. These objectives are assessed quarterly using the Company’s budget, actual results and long-term projections. For each of the Series 4 awards, the expected percentage vesting is evaluated through July 31, 2017, and reflects the percentage of shares projected to vest at the end of the measurement period. For the fiscal year 2017 awards, the shares vested in the second tranche may increase to a maximum of 200% of the target award on achievement of maximum performance objectives. The weighted-average grant-date fair value of performance share awards forfeited during the fiscal year 2017 was $23.12. The weighted-average grant-date fair value of performance share awards outstanding at August 1, 2016 and July 31, 2017 was $20.13 and $25.49, respectively. The total grant-date fair value of performance share awards vested during fiscal years 2017, 2016 and 2015 was approximately $2.3 million, $2.1 million, and $0.2 million, respectively. Time-Based Shares A summary of activity for time-based stock awards for the fiscal year ended July 31, 2017 is presented below: Shares Weighted-Average Grant-Date Fair Value Non-vested on August 1, 2015 82,688 $ 19.66 Granted (1) 177,799 21.94 Vested (2) (39,557 ) 21.04 Forfeited (3) (9,562 ) 20.51 Non-vested on July 31, 2016 211,368 21.28 Granted (4) 34,501 41.23 Vested (5) (63,852 ) 23.55 Forfeited (3) (8,414 ) 25.85 Non-vested on July 31, 2017 173,603 24.37 (1) Includes 19,007 shares awards granted to non-employee directors during fiscal year 2016. Includes 7,000 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 71,792 share awards granted to certain employees and executives during fiscal year 2016 which are expected to vest on October 31, 2018. Also includes 80,000 share awards granted to Mr. Fraser which vest over a service period of five years beginning on August 1, 2015. The share awards are to vest one third (1/3) at the end of years three, four and five of the service period. The Company recognizes compensation expense related to the awards over the respective service period. (2) Includes 19,007 share awards granted to non-employee directors for service during fiscal year 2016. The share awards vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 20,550 share awards granted to employees. The vested amount includes 6,000 share awards granted to Mr. Fraser. (3) Forfeitures includes awards that were granted in fiscal years 2017 and 2016 to certain employees that were forfeited at the termination of their employment. (4) Includes 12,580 share awards granted to non-employee directors during fiscal year 2017. Includes 11,342 share awards granted to certain employees during fiscal year 2017 as special compensation. Includes 10,579 share awards granted to certain employees during fiscal year 2017 which are expected to vest on July 31, 2019. The Company recognizes compensation expense related to the awards on a straight-line basis over the respective service period. (5) Includes 12,580 share awards granted to non-employee directors for service during fiscal year 2017. The share awards vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 51,272 share awards granted to employees. The vested amount includes 6,000 share awards granted to Mr. Fraser. The total grant date fair value of time-based share awards vested during the fiscal years ended 2017, 2016 and 2015 was approximately $1.5 million, $0.8 million, and $0.9 million, respectively.

Segment Information

Segment Information	12 Months Ended
	Jul. 31, 2017
Segment Reporting [Abstract]
Segment Information	13. SEGMENT INFORMATION The Company has two reportable segments—electronic chemicals and performance materials. In the fiscal quarter ended April 30, 2017, the Company’s management, including the chief executive officer, who is the chief operating decision maker, determined that the Company’s operations should be reported as the electronic chemicals segment and the performance materials segment. Previously the Company had two reportable segments – electronic chemicals and other chemicals. As of April 30, 2017, the performance materials segment includes the Company’s pipeline performance business and wood treating chemicals business that were previously referred to as the other chemicals segment. The Flowchem business acquired in June 2017 is included in the performance materials segment. The business segment management reporting and controlling systems are based on the same accounting policies as those described in the summary of significant accounting policies. See Note 1. Electronic Chemicals Performance Materials Other Activities Consolidated (Amounts in thousands) 2017 Net Sales $ 276,621 $ 56,821 $ — $ 333,442 Depreciation and amortization (1) 11,455 3,857 1,652 16,964 Income from operations (2) 35,317 13,804 (11,788 ) 37,333 Goodwill and intangible assets, net 16,446 528,346 — 544,792 Total assets 171,202 596,872 24,357 792,431 2016 Net Sales $ 261,523 $ 36,455 $ — $ 297,978 Depreciation and amortization (1) 11,832 1,149 1,553 14,534 Income from operations (2) 32,141 12,631 (17,201 ) 27,571 Goodwill and intangible assets, net 17,625 38,509 — 56,134 Total assets 165,561 53,798 17,669 237,028 2015 Net Sales $ 265,608 $ 54,820 $ 70 $ 320,498 Depreciation and amortization (1) 12,257 626 648 13,531 Income from operations (2) 21,787 8,735 (13,933 ) 16,589 Goodwill and intangible assets, net 19,778 39,190 — 58,968 Total assets 169,355 58,878 14,126 242,359 (1) Segment depreciation excludes depreciation for restructuring and realignment. (2) Segment income from operations includes allocated corporate overhead expenses, but excludes restructuring and realignment charges, which are included in the Other Activities column. For fiscal years 2017, 2016 and 2015 sales to one customer represented approximately 23%, 26% and 23%, respectively, of the Company’s net sales. No other customers accounted for 10% or more of the Company’s net sales. Geographic Data: The Company operated 19 facilities that are dedicated to manufacturing, blending and distributing products in 8 countries. The United States is home to 7 of those sites, representing 64% of the Company’s long-lived assets. Sales are attributed to geographic areas based on customer location; long-lived assets are attributed to geographic areas based on asset location. 2017 2016 2015 (Amounts in thousands) Net sales: United States $ 180,075 $ 162,427 $ 183,384 International 153,367 135,551 137,114 Net sales $ 333,442 $ 297,978 $ 320,498 Property, plant and equipment, net: United States $ 67,490 $ 47,118 International 37,945 32,621 Property, plant and equipment, net $ 105,435 $ 79,739

Restructuring and Realignment E

Restructuring and Realignment Events	12 Months Ended
	Jul. 31, 2017
Restructuring And Related Activities [Abstract]
Restructuring and Realignment Events	14. RESTRUCTURING AND REALIGNMENT EVENTS In April, 2017, the Company began implementation of a plan of restructuring of its electronic chemicals segment in Asia. As a result, the Company incurred approximately $0.2 million of employee related severance costs during fiscal year 2017. As part of the global restructuring of its electronic chemicals operations, the Company closed one of its facilities in Milan, Italy in December 2015, and shifted some production to facilities in France and the United Kingdom. Accelerated depreciation with respect to the closed facilities has been completed. Restructuring charges, exclusive of accelerated depreciation, have been $1.8 million in the aggregate in fiscal years 2016 and 2015. At July 31, 2017, the accrued liability associated with restructuring and other related charges consisted of the following: Employee Decommissioning and Environmental Other Total Accrued liability at July 31, 2015 $ 716 $ 169 $ 17 $ 902 Payments (4 ) (135 ) (17 ) (156 ) Adjustment 9 2 — 11 Accrued liability at July 31, 2016 $ 721 $ 36 $ — $ 757 Payments (362 ) (41 ) — (403 ) Adjustment (359 ) 82 — (277 ) Accrued liability at July 31, 2017 $ — $ 77 $ — $ 77 Total accelerated depreciation for the fiscal years ended July 31, 2016 and 2015 was $0.3 million and $0.9 million, respectively. In October 2014, the Company announced a realignment of its hydrofluoric acid business and subsequently exited the facility operated for the Company by Chemtrade Logistics (“Chemtrade”) in Bay Point, California. Under the manufacturing agreement, the Company is obligated to pay or reimburse Chemtrade for certain costs associated with the cessation of operations at Bay Point, including certain employee costs and the decommissioning, dismantling and removal of the Company’s manufacturing equipment at the site. The Company established an asset retirement obligation of $3.7 million for these costs. Operations ceased in the third quarter of fiscal year 2015. All assets have been fully depreciated as of July 31, 2015. All obligations related to the facility have been settled as of July 31, 2017. The changes to the asset retirement obligation associated with realignment are as follows: Asset retirement obligation at July 31, 2015 $ 811 Charges 129 Payments (772 ) Asset retirement obligation at July 31, 2016 $ 168 Charges (3 ) Payments (165 ) Asset retirement obligation at July 31, 2017 $ —

Selected Quarterly Financial Da

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Jul. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (Unaudited)	15. SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) First Quarter Second Quarter Third Quarter Fourth Quarter (Amounts in thousands, except per share data) Year Ended July 31, 2017 Net sales $ 76,495 $ 79,071 $ 81,616 $ 96,260 Gross profit 29,684 31,202 32,510 36,742 Operating income 8,681 9,040 9,367 10,245 Income before income taxes 8,734 8,583 9,210 5,915 Net income 5,742 6,486 6,067 5,338 Earnings per share: Net income per share - basic $ 0.48 $ 0.55 $ 0.51 $ 0.45 - diluted 0.47 0.53 0.49 0.43 Year Ended July 31, 2016 Net sales $ 76,650 $ 70,859 $ 75,168 $ 75,301 Gross profit 29,260 28,233 29,158 28,857 Operating income 7,320 6,137 7,029 7,085 Income before income taxes 7,151 6,034 8,522 6,523 Net income 4,591 3,979 6,362 3,743 Earnings per share: Net income per share - basic $ 0.39 $ 0.34 $ 0.54 $ 0.32 - diluted 0.39 0.33 0.53 0.31 Earnings per share amounts are computed independently for each quarter presented. Therefore, the sum of the quarterly earnings per share may not equal annual earnings per share.

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Jul. 31, 2017
Valuation And Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	KMG Chemicals, Inc. Schedule II — Valuation and Qualifying Accounts Fiscal years ended July 31, 2017, 2016 and 2015 (in thousands) Description Balance at beginning of period Charged to costs and expenses Additions/ Deductions Balance at end of period Year ended July 31, 2017: Allowance for doubtful accounts $ 210 $ (156 ) $ 209 $ 263 Inventory obsolescence 654 (22 ) (2 ) 630 Valuation allowance on deferred tax assets 2,895 (1,127 ) — 1,768 Year ended July 31, 2016: Allowance for doubtful accounts $ 144 $ 7 $ 59 $ 210 Inventory obsolescence 481 173 — 654 Valuation allowance on deferred tax assets 2,016 (360 ) 1,239 2,895 Year ended July 31, 2015: Allowance for doubtful accounts $ 272 $ — $ (128 ) $ 144 Inventory obsolescence 290 941 (750 ) 481 Valuation allowance on deferred tax assets 1,725 291 — 2,016

Summary of Significant Accoun25

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Jul. 31, 2017
Accounting Policies [Abstract]
General	General — KMG Chemicals, Inc. (the “Company”) is involved principally in the manufacture, formulation and distribution of specialty chemicals and performance materials for the semiconductor, industrial wood preservation and pipeline and energy markets. In its electronic chemicals business, the Company sells high purity process chemicals primarily to the semiconductor industry. The Company operates its electronic chemicals business through KMG Electronic Chemicals, Inc. in North America and through KMG Italia, S.r.l. and KMG Electronic Chemicals Holdings S.a.r.l. (and its subsidiaries) in Europe and Asia and has facilities in the United States, the United Kingdom, France, Italy and Singapore. In its pipeline performance business, the Company sells products and services to the pipeline and energy services market that are used to optimize pipeline throughput and maximize performance and safety .
Principles of Consolidation	Principles of Consolidation — The consolidated financial statements include the accounts of KMG Chemicals, Inc. and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates — The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents — The Company considers all investments with original maturities of three months or less when purchased to be c ash equivalents.
Restricted Cash	Restricted Cash — Restricted cash includes cash balances which are legally or contractually restricted to use. The Company’s restricted cash as of July 31, 2016 includes proceeds that were placed in escrow in connection with the sale of the animal health business. See Note 3.
Fair Value of Financial Instruments	Fair Value of Financial Instruments — The carrying value of financial instruments, including cash and cash equivalents, accounts receivable, and accounts payable approximate fair value because of the relatively sho rt maturity of these instruments. The fair value of the Company’s debt at July 31, 2017 and 2016 approximated its carrying value since the debt obligations bear interest at a rate consistent with market rates.
Accounts Receivable	Accounts Receivable — The Company’s trade ac counts receivables are primarily from sales of products worldwide. The Company extends credit based on an evaluation of the customer’s financial condition, generally without requiring collateral. Exposure to losses on receivables is dependent on each customer’s financial condition. The Company records an allowance for doubtful accounts to reduce accounts receivable when the Company believes an account may not be collected. A provision for bad debt expense is recorded to selling, general and administrative expenses. The amount of bad debt expense recorded each period and the resulting adequacy of the allowance at the end of each period are determined using a customer-by-customer analyses of accounts receivable balances each period and the Company’s assessment of future bad debt exposure. Historically, write offs of accounts receivable balances have been insignificant. The allowance was $0.3 million and $0.2 million at July 31, 2017 and 2016, respectively.
Inventories	Inventories — Inventories are valued at the low er of cost or market. For certain products, cost is generally determined using the first-in, first-out (“FIFO”) method. For certain other products the Company utilizes a weighted-average cost. The Company records a reserve for inventory obsolescence as a reduction in its inventory when considered not salable.
Property, Plant, and Equipment	Property, Plant, and Equipment — Property, plant, and equipment are stated at cost less accumulated depreciation and amortization. Major renewals and betterments are capitalized. Repairs and maintenance costs are expensed as incurred. Depreciation for equipment commences once placed in service, and depreciation for buildings and leasehold improvements commences once they are ready for their intended use. Depreciable life is determined through economic analysis. Depreciation for financial statement purposes is provided on the straight-line method. The estimated useful lives of classes of assets are as follows: Asset Class Life (Years) Building 15 to 30 Plant 10 to 18 Equipment 3 to 15 Leasehold improvements Remaining Depreciation expense was approximately $12.7 million, $12.9 million and $17.5 million in fiscal years 2017, 2016 and 2015, respectively (including accelerated depreciation of $0.3 million and $5.6 million in fiscal years 2016 and 2015, respectively). See Notes 5 and 14.
Intangible Assets	Intangible Assets — Identifiable intangible assets with a defined life are amortized using a straight-line method over the useful lives of the assets. Identifiable intangible assets of an indefinite life are not amortized. These assets are required to be tested for impairment at least annually. If this review indicates that impairment has occurred, the carrying value of the intangible assets will be adjusted to fair value. Based on an assessment of qualitative factors, in accordance with GAAP, it was determined that there were no events or circumstances that would lead the Company to a determination that is more likely than not that the fair value of the applicable assets was less than its carrying value as of July 31, 2017 and 2016. The Company therefore concluded that its indefinite lived intangible assets were not impaired as of July 31, 2017 and 2016. It is the Company’s policy to expense costs as incurred in connection with the renewal or extension of its intangible assets.
Goodwill	Goodwill — Goodwill repr esents the excess of the purchase price paid for acquired businesses over the allocated fair value of the related net assets after impairments, if applicable. The Company evaluates goodwill for impairment annually, and when an event occurs or circumstances change to suggest that the carrying amount may not be recoverable. The Company has goodwill of $216.5 million and $7.9 million associated with its performance materials and electronic chemicals segments, respectively, as of July 31, 2017. As part of the goodwill impairment analysis, current accounting standards give companies the option to first perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill. If it is determined that it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then performing the currently prescribed two-step impairment test is unnecessary. In developing a qualitative assessment to meet the “more-likely-than-not” threshold, each reporting unit with goodwill on its balance sheet is assessed separately, and different relevant events and circumstances are evaluated for each unit. If it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, then the prescribed two-step impairment test is performed. Current accounting standards also give us the option to bypass the qualitative assessment for any reporting unit in any period, and proceed directly to performing the first step of the two-step goodwill impairment test. The Company conducts its annual impairment test as of July 31 of each year. In 2017, 2016 and 2015, the Company performed a qualitative assessment that indicated the fair value of each of its reporting units is greater than its carrying amount. In conjunction with the sale of the creosote business on January 16, 2015, the Company allocated goodwill of approximately $0.7 million that was previously a part of the wood treating chemicals reporting unit to the assets disposed of in the sale.
Asset retirement obligation	Asset retirement obligation — The Company measures asset retirement obligations based upon the applicable accounting guidance, using certain assumptions including estimates for decommissioning, dismantling and disposal costs. In the event that operational or regulatory issues vary from management’s estimates, the Company could incur additional significant charges to income and increases in cash expenditures related to those costs. Certain conditional asset retirement obligations related to facilities have not been recorded in the consolidated financial statements due to uncertainties surrounding the ultimate settlement date and estimate of fair value related to a legal obligation to perform an asset retirement activity. When a reasonable estimate of the ultimate settlement can be made, an asset retirement obligation is recorded and such amounts may be material to the consolidated financial statements in the period in which they are recorded. In conjunction with its decision to exit the Bay Point facility, in fiscal year 2014 the Company recognized $3.7 million in asset retirement obligations related to the decommissioning, decontamination, and dismantling costs for which it is obligated under its manufacturing agreement. See Note 14.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets — Long-lived assets, including property, plant and equipment, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. The determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the use of the asset and its disposition. The measurement of an impairment loss for long-lived assets, where management expects to hold and use the asset, are based on the asset’s estimated fair value. Long-lived assets to be disposed of are reported at the lower of carrying amount or fair value. There were no impairment charges in fiscal years 2017, 2016 or 2015. See Notes 5 and 7.
Revenue Recognition	Revenue Recognition — The Company’s chemical products are sold in the open market and revenue is recognized when risk of loss and title to the products transfers to customers, the price to the buyer is fixed or determinable and recoverability is reasonably assured. For consignment sales, the revenues are recognized when the customer uses the product for their intended use. The Company also recognizes service revenue in connection with technical support services and chemicals delivery and handling at customer facilities. Revenue is recognized as those services are provided. To the extent that customers are eligible for rebates, they are estimated and recognized as the sales are made.
Cost of Sales	Cost of Sales — Cost of s ales includes inbound freight charges, purchasing and receiving costs, inspection costs and internal transfer costs. In the case of products manufactured by the Company, direct and indirect manufacturing costs, such as depreciation and property, plant and equipment, and associated plant administrative expenses are included as well as laid-in cost of raw materials consumed in the manufacturing process.
Distribution Expenses	Distribution Expenses — These expenses include outbound freight, depreciation, storage and handling expen ses and other miscellaneous costs (including depreciation and amortization) associated with product storage, handling and distribution.
Selling, General and Administrative Expenses	Selling, General and Administrative Expenses — These expenses include selling expenses, corporate headquarters’ expens es, depreciation, amortization of intangible assets and environmental regulatory support expenses.
Shipping and Handling Costs	Shipping and Handling Costs — Shipping and handling costs are included in cost of sales and distribution expenses. Inbound freight charges and internal transfer costs are included in cost of sales. Product storage and handling costs and the cost of distributing products to the Compa ny’s customers are included in distribution expenses.
Income Taxes	Income Taxes — The Company follows the asset and liability method of accounting for income taxes in accordance with current accounting standards. Under this method, deferred income taxes are recorded based upon the differences between the financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws in effect at the time the underlying assets or liabilities are recovered or settled. When the Company's earnings from foreign subsidiaries are considered to be indefinitely reinvested, no provision for United States income taxes is made for these undistributed earnings. If any of the subsidiaries have a distribution of earnings in the form of dividends or otherwise, the Company would be subject to both United States income taxes (subject to an adjustment for foreign tax credits) and withholding taxes payable to the various foreign countries. The Company records a valuation allowance in the reporting period when management believes that it is more likely than not that any deferred tax asset created will not be realized. Management will continue to evaluate the appropriateness of the valuation allowance in the future based upon the operating results of the Company. The calculation of the Company’s tax assets and liabilities involves assessing the uncertainties regarding the application of complex tax regulations. The Company recognizes liabilities for tax expenses based on its estimate of whether, and the extent to which, additional taxes will be due. If the Company determines that payment of these amounts is unnecessary, the Company reverses the liability and recognizes a tax benefit during the period in which it determines that the liability is no longer necessary. The Company records an additional charge in its provision for taxes when the determination is made. See Note 6.
Earnings Per Share	Earnings Per Share — Basic earnings per common share amounts are calculated using the weighted average number of common shares outsta nding during each period. Diluted earnings per share assumes the issuance of restricted stock under time-based and performance-based awards, and the exercise of stock options having exercise prices less than the average market price during the applicable period, using the treasury stock method. Time-based and performance-based awards have no liquidation or dividend rights and are thus are not considered participating securities.
Foreign Currency Translation	Foreign Currency Translation — The functional currency of the Company’s oper ations in Mexico is the U.S. Dollar. As a result, certain income statement items, such as sales or expenses denominated in pesos are re-measured at the average monthly exchange rate for the dates those items were recognized. Foreign currency transaction gains and losses are included in the statement of operations as incurred. These gains and losses were nominal in fiscal years 2017, 2016 and 2015. The Company’s other international operations are in Europe, Singapore and Canada, and use local currencies as the functional currency, including the Great Britain Pound, Euro, Singapore Dollar and Canadian Dollar. The translation adjustment resulting from currency translation of the local currency into the reporting currency (U.S. Dollar) is included as a separate component of stockholders’ equity. The assets and liabilities have been translated from local currencies into U.S. Dollars using exchange rates in effect at the balance sheet dates. Results of operations have been translated using the average exchange rates during the period. Foreign currency translation resulted in a translation adjustment gains/(losses) of $2.5 million, $(2.6) million and $(10.2) million in fiscal years 2017, 2016 and 2015, respectively, each of which are included in accumulated other comprehensive income/(loss) in the consolidated balance sheets.
Stock-Based Compensation	Stock-Based Compensation — The Company’s stock-based compensation expense is based on the fair value of the award measured on the date of grant. For stock option awards, the grant date fair value is measured using a Black-Scholes option valuation model. For stock awards, the Company’s stock price on the date of the grant is used to measure the grant date fair value. For awards of stock which are based on a fixed monetary value, the grant date fair value is based on the monetary value. Stock-based compensation costs are recognized as an expense over the requisite service period of the award using the straight-line method.
Recent Accounting Standards	Recent Accounting Standards The Company has considered all recently issued accounting standards updates and SEC rules and interpretive releases. In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2017‑01, “Business Combinations (Topic 805): Clarifying the Definition of a Business” (“ASU 2017-01”). ASU 2017-01 affects all companies and other reporting organizations that must determine whether they have acquired or sold a business. For public companies, the amendments are effective for annual periods beginning after December 15, 2017, including interim periods within those periods. The Company will adopt the standard on August 1, 2018 and will apply the guidance to acquisitions occurring after the effective date to determine whether such acquisitions meet the definition of a business. In January 2017, the FASB issued ASU No. 2017-04, “Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”). To simplify the subsequent measurement of goodwill, ASU 2017-04 eliminates step two from the goodwill impairment test. A public business entity should adopt the amendments for its annual goodwill impairment tests or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The guidance could impact the Company if a goodwill impairment is identified after adoption. The Company has a significant amount of goodwill as a result of recent transactions. The Company plans to adopt the guidance effective August 1, 2017. In August 2016, the FASB issued ASU No. 2016‑18, “Statement of Cash Flows (Topic 230): Restricted Cash” (“ASU 2016‑18”). ASU 2016-18 is intended to address diversity in practice that exists in the classification and presentation of changes in restricted cash on the statement of cash flows The amendments require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. In August 2016, the FASB issued ASU No. 2016‑15, “Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments” (“ASU 2016-15”). ASU 2016-15 is intended to address how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This update addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. The amendments are effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted. The Company early adopted ASU 2016-15 at the beginning of fiscal year 2017, but there was no impact on the consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments." ASU 2016-13 changes the impairment model for most financial assets and certain other instruments, including trade and other receivables, held-to-maturity debt securities and loans, and requires entities to use a new forward-looking expected loss model that will result in the earlier recognition of allowance for losses. In March 2016, the FASB issued ASU No. 2016-09, “Compensation—Stock Compensation (Topic 718), Improvements to Employee Share-based Payment Accounting.” ASU 2016-09 simplifies several aspects of the accounting for employee share-based payment transactions for both public and nonpublic entities, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. ASU 2016-09 is effective for annual periods beginning after December 15, 2017, and interim periods within annual periods beginning after December 15, 2018. Early adoption is permitted. The Company elected to early adopt this ASU beginning in the second quarter of fiscal year 2017, and has applied the effects of the adoption from the beginning of the annual period of adoption. Beginning in the three and six month periods ended January 31, 2017, stock-based compensation excess tax benefits or deficiencies are reflected in the consolidated statements of income as a component of the provision for income taxes, whereas they previously were recognized in additional paid in capital on the consolidated balance sheets. Additionally, the consolidated statements of cash flows presents excess tax benefits as an operating activity for the year ended July 31, 2017, while the historical periods have not been adjusted, which is consistent with the adoption of this portion of the standard on a prospective basis. Further, tax cash payments made on an employee’s behalf for shares withheld upon vesting or settlement are required to be presented as a financing activity, and the consolidated statement of cash flows for the year ended July 31, 2017 reflect these amounts as payments related to stock-based awards. Tax cash payments made on an employee’s behalf for shares withheld upon vesting or settlement for the years ended July 31, 2016 and 2015 were immaterial to the consolidated financial statements. Additionally, the Company did not have any unrecognized tax benefits related to its share-based payment awards at the date of adoption. Finally, the Company has elected to account for forfeitures as they occur, rather than estimate expected forfeitures. Historically, estimated forfeitures were immaterial to the consolidated financial statements. The amendments in the standard that required use of a modified retrospective transition method did not materially impact the Company. Therefore, the Company did not recognize a cumulative-effect adjustment to retained earnings upon adoption as of August 1, 2016. See note 6 for information regarding the additional impact on the consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842),” which is intended to increase transparency and comparability of accounting for lease transactions. The ASU will require all leases with lease terms exceeding one year to be recognized on the balance sheet as lease assets and lease liabilities and will require both quantitative and qualitative disclosures regarding key information about leasing arrangements. Lessor accounting is largely unchanged. The guidance is effective beginning January 1, 2019 with an option to early adopt. The Company is currently reviewing its significant lease arrangements to assess the potential impact on its consolidated financial statements. The Company plans to adopt the guidance effective August 1, 2019. In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers”, which requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. The new guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. In August 2015, the FASB voted to delay the effective date of ASU 2014-09 by one year to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Earlier application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. Adoption can occur using one of two prescribed transition methods. In March, April and December 2016, the FASB issued ASU 2016-08, “Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net)”, ASU 2016-10, “Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing,” and ASU 2016-20, “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers,” which provide supplemental adoption guidance and clarification to ASC 2014-09. ASU 2016-08, ASU 2016-10 and ASU 2016-20 must be adopted concurrently with the adoption of ASU 2014-09. The Company is currently reviewing its revenue contracts to assess the potential impact on its consolidated financial statements. The Company plans to adopt the revenue guidance effective August 1, 2018, although it has not yet selected a transition method. The Company currently does not expect the adoption to have a material impact on its consolidated financial statements and related disclosures. Further, it does not expect to change the manner or timing of recognizing revenue as a majority of its revenue transactions are recognized when product is delivered.

Summary of Significant Accoun26

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Jul. 31, 2017
Accounting Policies [Abstract]
Estimated Useful Lives of Classes of Assets	The estimated useful lives of classes of assets are as follows: Asset Class Life (Years) Building 15 to 30 Plant 10 to 18 Equipment 3 to 15 Leasehold improvements Remaining

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Jul. 31, 2017
Flowchem Holdings LLC
Summary of Acquired Assets and Assumed Liabilities and Preliminary Acquisition Accounting for Fair Value of Assets and Liabilities Recognized	The Company has accounted for the purchase using the acquisition method of accounting for business combinations. Accordingly, the purchase price has been allocated to the underlying assets and liabilities in proportion to their respective fair values Cash $ 11,445 Accounts receivable 11,280 Inventory 9,310 Other current assets 499 Property, plant and equipment 19,665 Intangible assets: Customer relationships 214,882 Trade names and trademark 28,951 Proprietary manufacturing process 39,245 Total assets 335,277 Current liabilities 3,132 Deferred tax liability 25,046 Net identifiable assets acquired $ 307,099 Goodwill 199,346 Fair value of net assets acquired $ 506,445
Unaudited Pro Forma Financial Information	The following unaudited pro forma financial information presents our results as if the Flowchem acquisition had occurred at the beginning of fiscal year 2016 (in thousands, except for per share amounts): Year Ended July 31, 2017 2016 Net sales $ 410,243 $ 375,841 Net income 23,336 11,869 Earnings per share Basic $ 1.96 $ 1.01 Diluted 1.90 1.00
Sealweld Corporation
Summary of Acquired Assets and Assumed Liabilities and Preliminary Acquisition Accounting for Fair Value of Assets and Liabilities Recognized	The following table summarizes the acquired assets and assumed liabilities and the acquisition accounting for the fair value of the assets and liabilities recognized in the consolidated balance sheet at July 31, 2017 (in thousands): Cash $ 69 Accounts receivable 2,937 Inventory 2,350 Other assets 38 Property, plant and equipment, net 4,192 Intangible assets Trade name/trademark 2,185 Non-compete agreements 2,254 Customer relationships 2,348 Total assets acquired $ 16,373 Current liabilities 1,172 Deferred tax liability 681 Net identifiable assets acquired 14,520 Goodwill 2,671 Fair value of net assets acquired $ 17,191
Nagase Finechem Singapore (Pte) Ltd ("NFC")
Summary of Acquired Assets and Assumed Liabilities and Preliminary Acquisition Accounting for Fair Value of Assets and Liabilities Recognized	The following table summarizes the acquired assets and assumed liabilities and the acquisition accounting for the fair value of the assets and liabilities recognized in the consolidated balance sheets at July 31, 2016 (in thousands): Cash $ 228 Accounts receivable 1,862 Other assets 101 Property, plant and equipment, net 3,242 Intangible assets Licensing agreement 73 Toll manufacturing agreement 255 Total assets acquired $ 5,761 Total current liabilities assumed 1,028 Fair value of net assets acquired $ 4,733
Valves Incorporated of Texas
Summary of Acquired Assets and Assumed Liabilities and Preliminary Acquisition Accounting for Fair Value of Assets and Liabilities Recognized	The following table summarizes acquired assets and liabilities and the acquisition accounting for the fair value of the assets and liability recognized in the consolidated balance sheets at the acquisition date of the industrial lubricants and sealants business (in thousands): Inventory $ 1,900 Other current assets 15 Property, plant and equipment 482 Intangible assets: Customer relationships 10,291 Trade name and trademark 2,885 Proprietary manufacturing process 2,808 Other 152 Total intangible assets 16,136 Deferred tax liability - noncurrent 6,213 Net assets acquired $ 12,320 Goodwill 11,387 Total purchase consideration $ 23,707

Cash, Cash Equivalents and Re28

Cash, Cash Equivalents and Restricted Cash (Tables)	12 Months Ended
	Jul. 31, 2017
Cash And Cash Equivalents [Abstract]
Reconciliation of Cash, Cash Equivalents and Restricted Cash	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same amounts shown in the consolidated statements of cash flows: July 31, July 31, July 31, Current Presentation 2017 2016 2015 Cash and cash equivalents $ 20,708 $ 12,428 $ 7,517 Restricted cash — 1,000 1,000 Total cash, cash equivalents and restricted cash $ 20,708 $ 13,428 $ 8,517

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Jul. 31, 2017
Inventory Disclosure [Abstract]
Summary of Inventories	Inventories are summarized as follows at July 31, 2017 and 2016 (in thousands): 2017 2016 Raw materials and supplies $ 9,124 $ 7,429 Work in process 884 1,195 Supplies 3,763 968 Finished products 33,341 28,463 Less reserve for inventory obsolescence (630 ) (654 ) Inventories, net $ 46,482 $ 37,401

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Jul. 31, 2017
Property Plant And Equipment [Abstract]
Property, Plant, and Equipment and Related Accumulated Depreciation and Amortization	Property, plant, and equipment and related accumulated depreciation and amortization are summarized as follows at July 31, 2017 and 2016 (in thousands): 2017 2016 Land $ 12,632 $ 9,765 Buildings and improvements 50,973 39,974 Equipment 106,379 88,470 Leasehold improvements 2,755 2,460 172,739 140,669 Less accumulated depreciation and amortization (76,974 ) (65,958 ) 95,765 74,711 Construction-in-progress 9,670 5,028 Property, plant and equipment, net (1) $ 105,435 $ 79,739 (1) In fiscal year 2016, as part of the Company’s ongoing review of its Milan production facilities, the Company determined that certain other facilities had excess capacity sufficient to absorb the manufacturing operations of one of its Milan plants. As a result, the Company committed to sell properties with a total estimated fair value, less costs to sell, of approximately $4.3 million at July 31, 2016. Assets held for sale are included in Prepaid expenses and other in Current assets. The Company obtained an updated third party market analysis on the property and has increased marketing and advertising efforts and expects the sale of the property to be completed during fiscal year 2018. The fair value measurements were based on recent valuation appraisals.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Jul. 31, 2017
Income Tax Disclosure [Abstract]
Geographical Sources of Income Before Income Taxes	The Company is subject to United States federal, state and foreign taxes on its operations. The geographical sources of income before income taxes for each of the three years ended July 31 are as follows (in thousands): 2017 2016 2015 United States $ 27,642 $ 28,820 $ 20,442 Foreign 4,800 (590 ) (1,558 ) Income before income taxes $ 32,442 $ 28,230 $ 18,884
Components of Income Tax Expense (Benefit)	The components of income tax expense/(benefit) for the years ended July 31 consisted of the following (in thousands): 2017 2016 2015 Current: Federal $ 7,620 $ 7,900 $ 9,176 Foreign 511 166 (127 ) State 1,588 1,275 1,214 9,719 9,341 10,263 Deferred: Federal (1,052 ) 358 (3,660 ) Foreign 160 (261 ) 293 State (18 ) 117 (150 ) (910 ) 214 (3,517 ) Total $ 8,809 $ 9,555 $ 6,746
Deferred Tax Assets and Liabilities	Deferred income taxes are provided on all temporary differences between financial and taxable income. The following table presents the components of the Company’s deferred tax assets and liabilities at July 31, 2017 and 2016 (in thousands): 2017 2016 Non-current deferred tax assets Inventory $ 933 $ 571 Net operating loss 1,233 2,061 Employee benefits 2,322 2,059 Deferred compensation 3,922 3,171 Accrued liabilities 43 498 Other 982 1,062 Less valuation allowance (1,768 ) (2,895 ) Total non-current deferred tax assets $ 7,667 $ 6,527 Non-current deferred tax liabilities: Difference in amortization basis of intangibles $ (34,851 ) $ (11,115 ) Difference in depreciable basis of property (6,722 ) (4,928 ) Other (767 ) (432 ) Total non-current deferred tax liabilities (42,340 ) (16,475 ) Net non-current deferred tax liability $ (34,673 ) $ (9,948 )
Differences Between Actual Tax Provision and Amounts Obtained by Applying Applicable United States Tax Rate	The following table accounts for the differences between the actual tax provision, and the amounts obtained by applying the applicable statutory United States federal income tax rate of 35% to income from continuing operations before income taxes for each of the years ended July 31, 2017, 2016, and 2015, respectively (in thousands): 2017 2016 2015 Income taxes at the federal statutory rate $ 11,354 $ 9,881 $ 6,610 Effect of foreign operations (198 ) 485 182 Change in valuation allowance (1,218 ) 311 648 Adjustments to foreign operations — — 1,148 Effects of foreign currency fluctuations 131 (330 ) (953 ) State income taxes, net of federal income tax effect 1,015 969 639 Production deduction and tax credits (1,217 ) (1,473 ) (1,182 ) Stock-based compensation (964 ) — — Acquisition related cost 151 85 125 Flowchem reorganization (584 ) — — Other 339 (373 ) (471 ) Total $ 8,809 $ 9,555 $ 6,746
Schedule Of Gross Unrecognized Tax Benefits	The following table summarizes the activity related to our gross unrecognized tax benefits (in thousands): Balance at July 31, 2016 $ 1,254 Increases related to prior years positions 129 Decreases related to prior year positions (320 ) Settlements (98 ) Balance at July 31, 2017 $ 965

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Jul. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible assets are summarized as follows (in thousands): Number of Years Weighted July 31, 2017 Average Amortization Period Original Cost Accumulated Amortization Foreign Currency Translation Carrying Amount Intangible assets subject to amortization (range of useful life): Electronic chemicals-related contracts (5-8 years) 6.6 $ 2,204 $ (1,362 ) $ (107 ) $ 735 Electronic chemicals-related trademarks and patents (10-15 years) 12.0 117 (97 ) (1 ) 19 Electronic chemicals-value of product qualifications (5-15 years) 14.1 14,100 (5,479 ) (841 ) 7,780 Performance materials-customer relationships (15-20 years) 19.7 227,521 (3,244 ) 54 224,331 Performance materials-proprietary manufacturing process (15 years) 15.0 39,245 (322 ) — 38,923 Performance materials-penta product registrations (15 years) 15.0 754 — — 754 Performance materials-other related contracts (5 years) 5.0 2,406 (289 ) 54 2,171 Electronic chemicals - Tolling/License Agreements (1-3 years) 1.4 328 (281 ) (6 ) 41 Total intangible assets subject to amortization 13.6 $ 286,675 $ (11,074 ) $ (847 ) $ 274,754 Intangible assets not subject to amortization: Performance materials-penta product registrations 8,765 Performance materials-related trade name and trademark 34,074 Performance materials-proprietary manufacturing process 2,808 Total intangible assets not subject to amortization 45,647 Total intangible assets, net $ 320,401 Number of Years Weighted July 31, 2016 Average Amortization Period Original Cost Accumulated Amortization Foreign Currency Translation Carrying Amount Intangible assets subject to amortization (range of useful life): Electronic chemicals-related contracts (5-8 years) 6.6 $ 2,204 $ (1,104 ) $ (117 ) $ 983 Electronic chemicals-related trademarks and patents (10-15 years) 12.0 117 (87 ) — 30 Electronic chemicals-value of product qualifications (5-15 years) 14.1 14,100 (4,616 ) (831 ) 8,653 Performance materials-customer relationships (15 years) 15.0 10,291 (858 ) — 9,433 Performance materials-other related contracts (5 years) 5.0 152 (38 ) — 114 Electronic chemicals - Tolling/License Agreements (1-3 years) 1.4 328 (93 ) — 235 Total intangible assets subject to amortization 13.6 $ 27,192 $ (6,796 ) $ (948 ) $ 19,448 Intangible assets not subject to amortization: Performance materials-penta product registrations 8,765 Performance materials-related trade name and trademark 2,885 Performance materials-proprietary manufacturing process 2,808 Total intangible assets not subject to amortization 14,458 Total intangible assets, net $ 33,906
Estimated Aggregate Amounts of Amortization Expense Related to Intangible Assets	The following table presents the estimated aggregate amounts of amortization expense for the succeeding five years and thereafter, related to intangible assets as of July 31, 2017 (in thousands): 2018 2019 2020 2021 2022 Thereafter Total estimated aggregate amortization expense $ 15,876 $ 15,863 $ 15,785 $ 15,615 $ 15,486 $ 196,129
Carrying Value of Goodwill by Operating Segment	The following table presents carrying value of goodwill by operating segment as of July 31, 2017, 2016 and 2015 (in thousands): Performance Materials Electronic Chemicals Total Balance as of July 31, 2015 $ 14,469 $ 7,939 $ 22,408 Purchase price adjustment 35 — 35 Foreign currency translation adjustment — (215 ) (215 ) Balance as of July 31, 2016 14,504 7,724 22,228 Business acquisition - Sealweld 2,671 — 2,671 Business acquisition - Flowchem 199,346 — 199,346 Foreign currency translation adjustment 7 139 146 Balance as of July 31, 2017 $ 216,528 $ 7,863 $ 224,391

Long-Term Obligations (Tables)

Long-Term Obligations (Tables)	12 Months Ended
	Jul. 31, 2017
Debt Disclosure [Abstract]
Long-Term Debt and Current Maturities	The Company’s long-term debt and current maturities as of July 31, 2017 and 2016 consisted of the following (in thousands): July 31, 2017 July 31, 2016 Senior secured debt: Term loan, maturing on June 15, 2024, variable interest rates based on LIBOR plus 4.25% at July 31, 2017 $ 540,000 $ — Revolving loan facility, maturing on October 9, 2019, variable interest rates based on LIBOR plus 1.0% at July 31, 2016 — 35,800 Total debt 540,000 35,800 Current maturities of long-term debt (3,167 ) — Unamortized debt issuance costs and original issue discount (13,731 ) — Long-term debt, net of current maturities $ 523,102 $ 35,800
Ratio of Net Funded Debt to Adjusted EBITDA	The Term Loan under the Credit Agreement bears interest at a varying rate of LIBOR plus a margin based on net funded debt to adjusted EBITDA, as described in the table below. Ratio of Funded Debt to Adjusted EBITDA Margin Greater than 4.25 to 1.0 4.25 % Less than or equal to 4.25 to 1.0 4.00 % The Revolving Loan under the Credit Agreement bears interest at a varying rate of LIBOR plus a margin based on net funded debt to adjusted EBITDA, as described in the table below. Ratio of Funded Debt to Adjusted EBITDA Margin Greater than 4.25 to 1.0 3.50 % Greater than 3.75 to 1.0, but less than or equal to 4.25 to 1.0 3.25 % Less than 3.75 to 1.0 3.00 %
Principal Payments Due Under Long-term Debt Agreements	Principal payments due under long-term debt agreements as of July 31, 2017 for the fiscal years ended July 31 are as follows (in thousands): Total 2018 2019 2020 2021 2022 Thereafter Long-term debt $ 540,000 $ 3,167 $ 4,222 $ 4,222 $ 4,222 $ 4,222 $ 519,945

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Jul. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Future Payments Under Certain Contractual Obligations	Our obligations to make future payments under certain contractual obligations as of July 31, 2017 are summarized in the following table (in thousands): Total 2018 2019 2020 2021 2022 Thereafter Operating leases $ 20,671 $ 3,749 $ 3,345 $ 2,445 $ 1,618 $ 1,388 $ 8,126 Purchase obligations (1) 81,542 49,598 23,756 8,188 — — — Total $ 102,213 $ 53,347 $ 27,101 $ 10,633 $ 1,618 $ 1,388 $ 8,126 (1) Consists primarily of raw materials purchase contracts. These are typically not fixed price arrangements. The prices are based on the prevailing market prices.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Jul. 31, 2017
Earnings Per Share [Abstract]
Basic and Diluted Earnings Per Share	The following table presents information necessary to calculate basic and diluted earnings per share for periods indicated: Year Ended 2017 2016 2015 (Amounts in thousands, except per share data) Net income from continuing operations $ 23,633 $ 18,675 $ 12,138 Weighted average shares outstanding Weighted average shares outstanding — basic 11,885 11,719 11,673 Dilutive effect of stock awards 401 207 106 Weighted average shares outstanding — diluted 12,286 11,926 11,779 Basic earnings per share $ 1.99 $ 1.59 $ 1.04 Diluted earnings per share $ 1.92 $ 1.57 $ 1.03

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Jul. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Performance Based Stock Awards Granted	Date of Grant Series Award Target Award (Shares) Grant Date Fair Value Measurement Period Ending Actual or Expected Percentage Vesting (1) Shares Projected to Vest or Vested Fiscal Year 2017 Award 12/08/2016 Series 1 10,531 $ 34.95 07/31/2019 Forfeitures (2) (374 ) Total Series 1 10,157 188 % 19,063 04/28/2017 Series 4, Tranche 1 4,545 $ 52.55 07/31/2019 10/21/2016 Series 4, Tranche 1 44,337 $ 29.11 07/31/2019 Forfeitures (2) (4,957 ) Total Series 4, Tranche 1 43,925 100 % 43,925 04/28/2017 Series 4, Tranche 2 4,546 $ 52.55 07/31/2019 10/21/2016 Series 4, Tranche 2 44,337 $ 29.11 07/31/2019 Forfeitures (2) (4,957 ) Total Series 4 - Tranche 2 43,926 188 % 82,443 Fiscal Year 2016 Award 03/10/2016 Series 1 14,625 $ 21.89 10/31/2018 01/29/2016 Series 1 57,163 $ 21.80 10/31/2018 Forfeitures (2) (12,608 ) Total Series 1 59,180 200 % 118,360 01/19/2016 Series 3 82,938 $ 20.89 07/31/2020 133 % 110,584 (1) The percentage vesting for performance share awards is currently estimated at 188% and 200% of the target award for Series 1 awards granted in fiscal years 2017 and 2016, respectively, 133% of the target award for Series 3 awards granted in fiscal year 2016, and 100% and 188% of the target award for the first and second tranches, respectively, of the Series 4 awards granted in fiscal year 2017. (2) Forfeitures include Series 1 and Series 4 awards that were granted in fiscal years 2017 and 2016 to certain employees that were forfeited at the termination of their employment.
Time Based Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Activity for Time-Based Stock Awards	A summary of activity for time-based stock awards for the fiscal year ended July 31, 2017 is presented below: Shares Weighted-Average Grant-Date Fair Value Non-vested on August 1, 2015 82,688 $ 19.66 Granted (1) 177,799 21.94 Vested (2) (39,557 ) 21.04 Forfeited (3) (9,562 ) 20.51 Non-vested on July 31, 2016 211,368 21.28 Granted (4) 34,501 41.23 Vested (5) (63,852 ) 23.55 Forfeited (3) (8,414 ) 25.85 Non-vested on July 31, 2017 173,603 24.37 (1) Includes 19,007 shares awards granted to non-employee directors during fiscal year 2016. Includes 7,000 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 71,792 share awards granted to certain employees and executives during fiscal year 2016 which are expected to vest on October 31, 2018. Also includes 80,000 share awards granted to Mr. Fraser which vest over a service period of five years beginning on August 1, 2015. The share awards are to vest one third (1/3) at the end of years three, four and five of the service period. The Company recognizes compensation expense related to the awards over the respective service period. (2) Includes 19,007 share awards granted to non-employee directors for service during fiscal year 2016. The share awards vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 20,550 share awards granted to employees. The vested amount includes 6,000 share awards granted to Mr. Fraser. (3) Forfeitures includes awards that were granted in fiscal years 2017 and 2016 to certain employees that were forfeited at the termination of their employment. (4) Includes 12,580 share awards granted to non-employee directors during fiscal year 2017. Includes 11,342 share awards granted to certain employees during fiscal year 2017 as special compensation. Includes 10,579 share awards granted to certain employees during fiscal year 2017 which are expected to vest on July 31, 2019. The Company recognizes compensation expense related to the awards on a straight-line basis over the respective service period. (5) Includes 12,580 share awards granted to non-employee directors for service during fiscal year 2017. The share awards vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 51,272 share awards granted to employees. The vested amount includes 6,000 share awards granted to Mr. Fraser.

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Jul. 31, 2017
Segment Reporting [Abstract]
Segment Information	The Company has two reportable segments—electronic chemicals and performance materials. In the fiscal quarter ended April 30, 2017, the Company’s management, including the chief executive officer, who is the chief operating decision maker, determined that the Company’s operations should be reported as the electronic chemicals segment and the performance materials segment. Previously the Company had two reportable segments – electronic chemicals and other chemicals. As of April 30, 2017, the performance materials segment includes the Company’s pipeline performance business and wood treating chemicals business that were previously referred to as the other chemicals segment. The Flowchem business acquired in June 2017 is included in the performance materials segment. The business segment management reporting and controlling systems are based on the same accounting policies as those described in the summary of significant accounting policies. See Note 1. Electronic Chemicals Performance Materials Other Activities Consolidated (Amounts in thousands) 2017 Net Sales $ 276,621 $ 56,821 $ — $ 333,442 Depreciation and amortization (1) 11,455 3,857 1,652 16,964 Income from operations (2) 35,317 13,804 (11,788 ) 37,333 Goodwill and intangible assets, net 16,446 528,346 — 544,792 Total assets 171,202 596,872 24,357 792,431 2016 Net Sales $ 261,523 $ 36,455 $ — $ 297,978 Depreciation and amortization (1) 11,832 1,149 1,553 14,534 Income from operations (2) 32,141 12,631 (17,201 ) 27,571 Goodwill and intangible assets, net 17,625 38,509 — 56,134 Total assets 165,561 53,798 17,669 237,028 2015 Net Sales $ 265,608 $ 54,820 $ 70 $ 320,498 Depreciation and amortization (1) 12,257 626 648 13,531 Income from operations (2) 21,787 8,735 (13,933 ) 16,589 Goodwill and intangible assets, net 19,778 39,190 — 58,968 Total assets 169,355 58,878 14,126 242,359 (1) Segment depreciation excludes depreciation for restructuring and realignment. (2) Segment income from operations includes allocated corporate overhead expenses, but excludes restructuring and realignment charges, which are included in the Other Activities column.
Geographic Data	Geographic Data: The Company operated 19 facilities that are dedicated to manufacturing, blending and distributing products in 8 countries. The United States is home to 7 of those sites, representing 64% of the Company’s long-lived assets. Sales are attributed to geographic areas based on customer location; long-lived assets are attributed to geographic areas based on asset location. 2017 2016 2015 (Amounts in thousands) Net sales: United States $ 180,075 $ 162,427 $ 183,384 International 153,367 135,551 137,114 Net sales $ 333,442 $ 297,978 $ 320,498 Property, plant and equipment, net: United States $ 67,490 $ 47,118 International 37,945 32,621 Property, plant and equipment, net $ 105,435 $ 79,739

Restructuring and Realignment38

Restructuring and Realignment Events (Tables)	12 Months Ended
	Jul. 31, 2017
Restructuring And Related Activities [Abstract]
Accrued Liability Associated with Restructuring and Other Related Charges	At July 31, 2017, the accrued liability associated with restructuring and other related charges consisted of the following: Employee Decommissioning and Environmental Other Total Accrued liability at July 31, 2015 $ 716 $ 169 $ 17 $ 902 Payments (4 ) (135 ) (17 ) (156 ) Adjustment 9 2 — 11 Accrued liability at July 31, 2016 $ 721 $ 36 $ — $ 757 Payments (362 ) (41 ) — (403 ) Adjustment (359 ) 82 — (277 ) Accrued liability at July 31, 2017 $ — $ 77 $ — $ 77
Schedule of Changes in Asset Retirement Obligation Associated with Realignment	The changes to the asset retirement obligation associated with realignment are as follows: Asset retirement obligation at July 31, 2015 $ 811 Charges 129 Payments (772 ) Asset retirement obligation at July 31, 2016 $ 168 Charges (3 ) Payments (165 ) Asset retirement obligation at July 31, 2017 $ —

Selected Quarterly Financial 39

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Jul. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data	First Quarter Second Quarter Third Quarter Fourth Quarter (Amounts in thousands, except per share data) Year Ended July 31, 2017 Net sales $ 76,495 $ 79,071 $ 81,616 $ 96,260 Gross profit 29,684 31,202 32,510 36,742 Operating income 8,681 9,040 9,367 10,245 Income before income taxes 8,734 8,583 9,210 5,915 Net income 5,742 6,486 6,067 5,338 Earnings per share: Net income per share - basic $ 0.48 $ 0.55 $ 0.51 $ 0.45 - diluted 0.47 0.53 0.49 0.43 Year Ended July 31, 2016 Net sales $ 76,650 $ 70,859 $ 75,168 $ 75,301 Gross profit 29,260 28,233 29,158 28,857 Operating income 7,320 6,137 7,029 7,085 Income before income taxes 7,151 6,034 8,522 6,523 Net income 4,591 3,979 6,362 3,743 Earnings per share: Net income per share - basic $ 0.39 $ 0.34 $ 0.54 $ 0.32 - diluted 0.39 0.33 0.53 0.31

Summary of Significant Accoun40

Summary of Significant Accounting Policies - Additional Information (Detail)	Jan. 16, 2015USD ($)	Jul. 31, 2017USD ($)FacilitySegment	Jul. 31, 2016USD ($)	Jul. 31, 2015USD ($)	Oct. 31, 2017USD ($)	Aug. 01, 2016USD ($)	Jul. 31, 2014USD ($)
Schedule Of Significant Accounting Policies [Line Items]
Number of reportable segments | Segment		2
Allowances for accounts receivables		$ 263,000	$ 210,000
Depreciation expense		12,700,000	12,900,000	$ 17,500,000
Depreciation related to restructuring and realignment			300,000	5,600,000
Goodwill		224,391,000	22,228,000	22,408,000
Asset retirement obligations recognized							$ 3,700,000
Non-cash Impairment charges		0	0	0
Foreign currency translation resulting in gains (loss)		2,500,000	(2,600,000)	(10,200,000)
Accounting Standards Update 2016-09 | Retained Earnings
Schedule Of Significant Accounting Policies [Line Items]
Cumulative-effect adjustment to retained earnings						$ 0
Performance Materials
Schedule Of Significant Accounting Policies [Line Items]
Goodwill		216,528,000	14,504,000	14,469,000	$ 216,500,000
Goodwill allocated on sale of business	$ 700,000
Electronic Chemicals
Schedule Of Significant Accounting Policies [Line Items]
Goodwill		$ 7,863,000	$ 7,724,000	$ 7,939,000	$ 7,900,000
United States
Schedule Of Significant Accounting Policies [Line Items]
Number of pipeline performance business facilities | Facility		4
Canada
Schedule Of Significant Accounting Policies [Line Items]
Number of pipeline performance business facilities | Facility		1

Estimated Useful Lives of Class

Estimated Useful Lives of Classes of Assets (Detail)	12 Months Ended
	Jul. 31, 2017
Building | Minimum
Property Plant And Equipment [Line Items]
Useful lives of assets	15 years
Building | Maximum
Property Plant And Equipment [Line Items]
Useful lives of assets	30 years
Plant | Minimum
Property Plant And Equipment [Line Items]
Useful lives of assets	10 years
Plant | Maximum
Property Plant And Equipment [Line Items]
Useful lives of assets	18 years
Equipment | Minimum
Property Plant And Equipment [Line Items]
Useful lives of assets	3 years
Equipment | Maximum
Property Plant And Equipment [Line Items]
Useful lives of assets	15 years
Leasehold improvements
Property Plant And Equipment [Line Items]
Useful life of leasehold	Remaining life of the lease

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) $ in Thousands, CAD in Millions	Jun. 15, 2017USD ($)	Feb. 02, 2017USD ($)CAD / $	Feb. 02, 2017CAD	Apr. 04, 2016USD ($)a	May 02, 2015USD ($)shares	Jul. 31, 2017USD ($)shares	Jul. 31, 2017USD ($)shares	Apr. 30, 2017USD ($)	Jan. 31, 2017USD ($)	Oct. 31, 2016USD ($)	Jul. 31, 2016USD ($)shares	Apr. 30, 2016USD ($)	Jan. 31, 2016USD ($)	Oct. 31, 2015USD ($)	Jul. 31, 2017USD ($)shares	Jul. 31, 2016USD ($)shares	Jul. 31, 2015USD ($)	Oct. 31, 2017USD ($)	Feb. 02, 2017CADCAD / $
Business Acquisition [Line Items]
Goodwill						$ 224,391	$ 224,391				$ 22,228				$ 224,391	$ 22,228	$ 22,408
Net sales							96,260	$ 81,616	$ 79,071	$ 76,495	75,301	$ 75,168	$ 70,859	$ 76,650	333,442	297,978	320,498
Net income							$ (5,338)	$ (6,067)	$ (6,486)	$ (5,742)	$ (3,743)	(6,362)	$ (3,979)	$ (4,591)	$ (23,633)	(18,675)	(12,138)
Gain on acquisition of assets and assumed liabilities under bargain purchase																$ 1,826
Common stock, shares outstanding | shares						11,889,649	11,889,649				11,877,282				11,889,649	11,877,282
Performance Materials
Business Acquisition [Line Items]
Goodwill						$ 216,528	$ 216,528				$ 14,504				$ 216,528	$ 14,504	14,469	$ 216,500
Flowchem Holdings LLC
Business Acquisition [Line Items]
Acquisition date															Jun. 15, 2017
Cash consideration	$ 495,000
Cash acquired	$ 11,400
Line of credit facility, maximum borrowing capacity						550,000	550,000								$ 550,000
Line of credit facility, term															7 years
Acquisition-related costs incurred															$ 700
Fair value of accounts receivable acquired						11,280	11,280								11,280
Goodwill						199,346	199,346								199,346
Net sales						9,400
Net income						(300)
Business acquisition pro forma estimated annual depreciation and amortization															30,400	30,200
Business acquisition pro form estimated interest expense															30,900	30,400
Business acquisition pro forma transaction related costs															1,700
Total purchase consideration						506,445	506,445								506,445
Flowchem Holdings LLC | Performance Materials
Business Acquisition [Line Items]
Goodwill						199,300	199,300								199,300
Goodwill expected to be tax deductible						152,600	152,600								$ 152,600
Sealweld Corporation
Business Acquisition [Line Items]
Acquisition date															Feb. 1, 2017
Cash consideration		$ 17,200	CAD 22.3
Acquisition-related costs incurred															$ 800
Exchange rate | CAD / $		0.77																	0.77
Estimated working capital		$ 4,200																	CAD 5.5
Fair value of accounts receivable acquired						2,937	2,937								2,937
Goodwill						2,671	2,671								2,671
Total purchase consideration						17,191	17,191								17,191
Sealweld Corporation | Performance Materials
Business Acquisition [Line Items]
Goodwill						2,700	2,700								2,700
Goodwill expected to be tax deductible						$ 200	$ 200								$ 200
Sealweld Corporation | Revolving Loan Facility
Business Acquisition [Line Items]
Line of credit facility, outstanding		$ 17,000
Nagase Finechem Singapore (Pte) Ltd ("NFC")
Business Acquisition [Line Items]
Acquisition date															Apr. 4, 2016
Cash consideration				$ 2,900
Acquisition-related costs incurred												$ 200
Area of land | a				5
Fair value of accounts receivable acquired											$ 1,862					1,862
Estimated net working capital				$ 1,100
Gain on acquisition of assets and assumed liabilities under bargain purchase																$ 1,826
Nagase Finechem Singapore (Pte) Ltd ("NFC") | Revolving Loan Facility
Business Acquisition [Line Items]
Line of credit facility, outstanding				$ 2,800
Valves Incorporated of Texas
Business Acquisition [Line Items]
Acquisition date															May 1, 2015
Acquisition-related costs incurred																	$ 500
Goodwill					$ 11,387
Common stock, shares outstanding | shares					606,875
Issuance of common stock shares for acquisitions of businesses | shares					606,875
Total purchase consideration					$ 23,707
Previously owned shares cancelled | shares					606,875
Additional shares issued net | shares					0
Purchase price retained as holdback for potential inventory adjustments and indemnity claims					$ 1,000
Release of holdback for inventory adjustment					500
Holdback for potential indemnity claims					$ 500
Holdback for potential indemnity claims released					2016-11
Inventory adjustment holdback released					2015-08
Valves Incorporated of Texas | Revolving Loan Facility
Business Acquisition [Line Items]
Long-term debt					$ 23,500

Summary of Acquired Assets and

Summary of Acquired Assets and Assumed Liabilities and Preliminary Acquisition Accounting for Fair Value of Assets and Liabilities Recognized (Detail) - USD ($) $ in Thousands	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015	May 02, 2015
Intangible assets:
Goodwill	$ 224,391	$ 22,228	$ 22,408
Flowchem Holdings LLC
Business Acquisition [Line Items]
Cash	11,445
Accounts receivable	11,280
Inventory	9,310
Other current assets	499
Property, plant and equipment	19,665
Intangible assets:
Total assets acquired	335,277
Total current liabilities assumed	3,132
Deferred tax liability	25,046
Net identifiable assets acquired	307,099
Goodwill	199,346
Fair value of net assets acquired	506,445
Flowchem Holdings LLC | Customer relationships
Intangible assets:
Intangible assets	214,882
Flowchem Holdings LLC | Trade names and trademark
Intangible assets:
Intangible assets	28,951
Flowchem Holdings LLC | Proprietary manufacturing process
Intangible assets:
Intangible assets	39,245
Sealweld Corporation
Business Acquisition [Line Items]
Cash	69
Accounts receivable	2,937
Inventory	2,350
Other current assets	38
Property, plant and equipment	4,192
Intangible assets:
Total assets acquired	16,373
Total current liabilities assumed	1,172
Deferred tax liability	681
Net identifiable assets acquired	14,520
Goodwill	2,671
Fair value of net assets acquired	17,191
Sealweld Corporation | Customer relationships
Intangible assets:
Intangible assets	2,348
Sealweld Corporation | Trade names and trademark
Intangible assets:
Intangible assets	2,185
Sealweld Corporation | Non-compete agreements
Intangible assets:
Intangible assets	$ 2,254
Nagase Finechem Singapore (Pte) Ltd ("NFC")
Business Acquisition [Line Items]
Cash		228
Accounts receivable		1,862
Other current assets		101
Property, plant and equipment		3,242
Intangible assets:
Total assets acquired		5,761
Total current liabilities assumed		1,028
Net identifiable assets acquired		4,733
Nagase Finechem Singapore (Pte) Ltd ("NFC") | Licensing agreement
Intangible assets:
Intangible assets		73
Nagase Finechem Singapore (Pte) Ltd ("NFC") | Toll manufacturing agreement
Intangible assets:
Intangible assets		$ 255
Valves Incorporated of Texas
Business Acquisition [Line Items]
Inventory				$ 1,900
Other current assets				15
Property, plant and equipment				482
Intangible assets:
Total intangible assets				16,136
Deferred tax liability				6,213
Net identifiable assets acquired				12,320
Goodwill				11,387
Fair value of net assets acquired				23,707
Valves Incorporated of Texas | Customer relationships
Intangible assets:
Total intangible assets				10,291
Valves Incorporated of Texas | Trade names and trademark
Intangible assets:
Total intangible assets				2,885
Valves Incorporated of Texas | Proprietary manufacturing process
Intangible assets:
Total intangible assets				2,808
Valves Incorporated of Texas | Other
Intangible assets:
Total intangible assets				$ 152

Acquisitions - Unaudited Pro Fo

Acquisitions - Unaudited Pro Forma Financial Information (Detail) - Flowchem - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Business Acquisition [Line Items]
Net sales	$ 410,243	$ 375,841
Net income	$ 23,336	$ 11,869
Earnings per share
Basic	$ 1.96	$ 1.01
Diluted	$ 1.90	$ 1

Cash, Cash Equivalents and Re45

Cash, Cash Equivalents and Restricted Cash - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents	$ 20,708	$ 12,428	$ 7,517
Restricted cash		1,000	1,000
Total cash, cash equivalents and restricted cash	$ 20,708	$ 13,428	$ 8,517

Summary of Inventories (Detail)

Summary of Inventories (Detail) - USD ($) $ in Thousands	Jul. 31, 2017	Jul. 31, 2016
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 9,124	$ 7,429
Work in process	884	1,195
Supplies	3,763	968
Finished products	33,341	28,463
Less reserve for inventory obsolescence	(630)	(654)
Inventories, net	$ 46,482	$ 37,401

Property, Plant, and Equipment

Property, Plant, and Equipment and Related Accumulated Depreciation and Amortization (Detail) - USD ($) $ in Thousands		Jul. 31, 2017	Jul. 31, 2016
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross		$ 172,739	$ 140,669
Less accumulated depreciation and amortization		(76,974)	(65,958)
Property plant and equipment excluding construction in progress		95,765	74,711
Construction-in-progress		9,670	5,028
Property, plant and equipment, net	[1]	105,435	79,739
Land
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross		12,632	9,765
Buildings and improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross		50,973	39,974
Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross		106,379	88,470
Leasehold improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross		$ 2,755	$ 2,460
[1]	In fiscal year 2016, as part of the Company’s ongoing review of its Milan production facilities, the Company determined that certain other facilities had excess capacity sufficient to absorb the manufacturing operations of one of its Milan plants. As a result, the Company committed to sell properties with a total estimated fair value, less costs to sell, of approximately $4.3 million at July 31, 2016. Assets held for sale are included in Prepaid expenses and other in Current assets. The Company obtained an updated third party market analysis on the property and has increased marketing and advertising efforts and expects the sale of the property to be completed during fiscal year 2018. The fair value measurements were based on recent valuation appraisals.

Property, Plant, and Equipmen48

Property, Plant, and Equipment and Related Accumulated Depreciation and Amortization (Parenthetical) (Detail) $ in Millions	Jul. 31, 2016USD ($)Facility
Property Plant And Equipment [Abstract]
Estimated fair value of property, less cost to sell | $	$ 4.3
Number of excess capacity manufacturing facilities | Facility	1

Geographical Sources of Income

Geographical Sources of Income Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Income Tax Disclosure [Abstract]
United States									$ 27,642	$ 28,820	$ 20,442
Foreign									4,800	(590)	(1,558)
Income before income taxes	$ 5,915	$ 9,210	$ 8,583	$ 8,734	$ 6,523	$ 8,522	$ 6,034	$ 7,151	$ 32,442	$ 28,230	$ 18,884

Components of Income Tax Expens

Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Current:
Federal	$ 7,620	$ 7,900	$ 9,176
Foreign	511	166	(127)
State	1,588	1,275	1,214
Total current	9,719	9,341	10,263
Deferred:
Federal	(1,052)	358	(3,660)
Foreign	160	(261)	293
State	(18)	117	(150)
Total deferred	(910)	214	(3,517)
Total	$ 8,809	$ 9,555	$ 6,746

Deferred Tax Assets and Liabili

Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jul. 31, 2017	Jul. 31, 2016
Non-current deferred tax assets
Inventory	$ 933	$ 571
Net operating loss	1,233	2,061
Employee benefits	2,322	2,059
Deferred compensation	3,922	3,171
Accrued liabilities	43	498
Other	982	1,062
Less valuation allowance	(1,768)	(2,895)
Total non-current deferred tax assets	7,667	6,527
Non-current deferred tax liabilities:
Difference in amortization basis of intangibles	(34,851)	(11,115)
Difference in depreciable basis of property	(6,722)	(4,928)
Other	(767)	(432)
Total non-current deferred tax liabilities	(42,340)	(16,475)
Net non-current deferred tax liability	$ (34,673)	$ (9,948)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Income Taxes [Line Items]
Liability for uncertain tax positions in Italy		$ 100
Federal income tax rate	35.00%	35.00%	35.00%
Change in valuation allowance	$ (1,218)	$ 311	$ 648
Tax benefit from domestic manufacturing deduction	8,809	9,555	6,746
Deferred tax benefit	(1,090)	258	$ (3,532)
Penalties and interest recognized related to unrecognized tax benefits	100	$ 100
Singapore and Italy
Income Taxes [Line Items]
Change in valuation allowance	1,200
U.S. Federal
Income Taxes [Line Items]
Tax benefit from domestic manufacturing deduction	900
Flowchem
Income Taxes [Line Items]
Deferred tax benefit	600
ASU 2016-09
Income Taxes [Line Items]
Stock-based compensation excess tax benefits	1,000
Foreign
Income Taxes [Line Items]
Net operating loss carry forwards not subject to expiration	3,000
U.S. Federal
Income Taxes [Line Items]
Net operating loss carry forwards subject to expiration	$ 1,000
Net operating loss carry forwards expiration year	2,034

Differences Between Actual Tax

Differences Between Actual Tax Provision and Amounts Obtained by Applying Applicable United States Tax Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Income Tax Disclosure [Abstract]
Income taxes at the federal statutory rate	$ 11,354	$ 9,881	$ 6,610
Effect of foreign operations	(198)	485	182
Change in valuation allowance	(1,218)	311	648
Adjustments to foreign operations			1,148
Effects of foreign currency fluctuations	131	(330)	(953)
State income taxes, net of federal income tax effect	1,015	969	639
Production deduction and tax credits	(1,217)	(1,473)	(1,182)
Stock-based compensation	(964)
Acquisition related cost	151	85	125
Flowchem reorganization	(584)
Other	339	(373)	(471)
Total	$ 8,809	$ 9,555	$ 6,746

Schedule Of Gross Unrecognized

Schedule Of Gross Unrecognized Tax Benefits (Detail) $ in Thousands	12 Months Ended
	Jul. 31, 2017USD ($)
Income Tax Disclosure [Abstract]
Balance, at beginning of the period	$ 1,254
Increases related to prior years positions	129
Decreases related to prior year positions	(320)
Settlements	(98)
Balance at end of the period	$ 965

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	May 31, 2015	May 31, 2013	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Finite Lived Intangible Assets [Line Items]
Industrial lubricants business acquisition					$ 11.4
Amortization expense			$ 4.3	$ 2	$ 1.7
Performance materials-customer relationships
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets	15 years			15 years
Acquired intangible assets	$ 10.3
Performance materials-other related contracts
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets	5 years		5 years	5 years
Acquired intangible assets	$ 0.2
Electronic chemicals-value of product qualifications
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets		15 years
Acquired intangible assets		$ 12.8
Electronic chemicals-related contracts
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets		7 years
Acquired intangible assets		$ 1.9
Minimum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			5 years
Minimum | Performance materials-customer relationships
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			15 years
Minimum | Electronic chemicals-value of product qualifications
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			5 years	5 years
Minimum | Electronic chemicals-related contracts
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			5 years	5 years
Maximum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			20 years
Maximum | Performance materials-customer relationships
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			20 years
Maximum | Electronic chemicals-value of product qualifications
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			15 years	15 years
Maximum | Electronic chemicals-related contracts
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			8 years	8 years

Intangible Assets (Detail)

Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	13 years 7 months 6 days	13 years 7 months 6 days
Original Cost	$ 286,675	$ 27,192
Accumulated Amortization	(11,074)	(6,796)
Foreign Currency Translation	(847)	(948)
Carrying Amount	274,754	19,448
Total intangible assets not subject to amortization	45,647	14,458
Total intangible assets, net	320,401	33,906
Performance materials-penta product registrations
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization	8,765	8,765
Performance materials-related trade name and trademark
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization	34,074	2,885
Performance materials-proprietary manufacturing process
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization	$ 2,808	$ 2,808
Electronic chemicals-related contracts
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	6 years 7 months 6 days	6 years 7 months 6 days
Original Cost	$ 2,204	$ 2,204
Accumulated Amortization	(1,362)	(1,104)
Foreign Currency Translation	(107)	(117)
Carrying Amount	$ 735	$ 983
Electronic chemicals-related trademarks and patents
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	12 years	12 years
Original Cost	$ 117	$ 117
Accumulated Amortization	(97)	(87)
Foreign Currency Translation	(1)
Carrying Amount	$ 19	$ 30
Electronic chemicals-value of product qualifications
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	14 years 1 month 6 days	14 years 1 month 6 days
Original Cost	$ 14,100	$ 14,100
Accumulated Amortization	(5,479)	(4,616)
Foreign Currency Translation	(841)	(831)
Carrying Amount	$ 7,780	$ 8,653
Performance materials-customer relationships
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	19 years 8 months 12 days	15 years
Original Cost	$ 227,521	$ 10,291
Accumulated Amortization	(3,244)	(858)
Foreign Currency Translation	54
Carrying Amount	$ 224,331	$ 9,433
Performance materials-proprietary manufacturing process
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	15 years
Original Cost	$ 39,245
Accumulated Amortization	(322)
Carrying Amount	$ 38,923
Performance materials-penta product registrations
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	15 years
Original Cost	$ 754
Carrying Amount	$ 754
Performance materials-other related contracts
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	5 years	5 years
Original Cost	$ 2,406	$ 152
Accumulated Amortization	(289)	(38)
Foreign Currency Translation	54
Carrying Amount	$ 2,171	$ 114
Electronic chemicals - Tolling/License Agreements
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	1 year 4 months 24 days	1 year 4 months 24 days
Original Cost	$ 328	$ 328
Accumulated Amortization	(281)	(93)
Foreign Currency Translation	(6)
Carrying Amount	$ 41	$ 235

Intangible Assets (Parenthetica

Intangible Assets (Parenthetical) (Detail)	May 31, 2015	May 31, 2013	Jul. 31, 2017	Jul. 31, 2016
Performance materials-penta product registrations
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			15 years
Minimum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			5 years
Maximum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			20 years
Electronic chemicals-related contracts
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets		7 years
Electronic chemicals-related contracts | Minimum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			5 years	5 years
Electronic chemicals-related contracts | Maximum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			8 years	8 years
Electronic chemicals-related trademarks and patents | Minimum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			10 years	10 years
Electronic chemicals-related trademarks and patents | Maximum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			15 years	15 years
Electronic chemicals-value of product qualifications
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets		15 years
Electronic chemicals-value of product qualifications | Minimum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			5 years	5 years
Electronic chemicals-value of product qualifications | Maximum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			15 years	15 years
Performance materials-customer relationships
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets	15 years			15 years
Performance materials-customer relationships | Minimum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			15 years
Performance materials-customer relationships | Maximum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			20 years
Performance materials-proprietary manufacturing process
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			15 years
Performance materials-other related contracts
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets	5 years		5 years	5 years
Electronic chemicals - Tolling/License Agreements | Minimum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			1 year	1 year
Electronic chemicals - Tolling/License Agreements | Maximum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets			3 years	3 years

Estimated Aggregate Amounts of

Estimated Aggregate Amounts of Amortization Expense Related to Intangible Assets (Detail) $ in Thousands	Jul. 31, 2017USD ($)
Finite Lived Intangible Assets Future Amortization Expense Current And Five Succeeding Fiscal Years [Abstract]
2,018	$ 15,876
2,019	15,863
2,020	15,785
2,021	15,615
2,022	15,486
Thereafter	$ 196,129

Carrying Value of Goodwill by O

Carrying Value of Goodwill by Operating Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Goodwill [Line Items]
Carrying value, beginning balance	$ 22,228	$ 22,408
Purchase price adjustment		35
Business acquisition			$ 11,400
Foreign currency translation adjustment	146	(215)
Carrying value, ending balance	224,391	22,228	22,408
Sealweld
Goodwill [Line Items]
Business acquisition	2,671
Carrying value, ending balance	2,671
Flowchem
Goodwill [Line Items]
Business acquisition	199,346
Carrying value, ending balance	199,346
Performance Materials
Goodwill [Line Items]
Carrying value, beginning balance	14,504	14,469
Purchase price adjustment		35
Foreign currency translation adjustment	7
Carrying value, ending balance	216,528	14,504	14,469
Performance Materials | Sealweld
Goodwill [Line Items]
Business acquisition	2,671
Carrying value, ending balance	2,700
Performance Materials | Flowchem
Goodwill [Line Items]
Business acquisition	199,346
Carrying value, ending balance	199,300
Electronic Chemicals
Goodwill [Line Items]
Carrying value, beginning balance	7,724	7,939
Foreign currency translation adjustment	139	(215)
Carrying value, ending balance	$ 7,863	$ 7,724	$ 7,939

Long-Term Obligations - Additio

Long-Term Obligations - Additional Information (Detail) - USD ($)	Jun. 15, 2017	Jul. 31, 2017	Jul. 31, 2015	Jul. 31, 2016	Oct. 31, 2014
Debt Instrument [Line Items]
Credit agreement initiation date	Jun. 15, 2017
Repayments of secured debt	$ 31,000,000	$ 10,000,000	$ 20,000,000
Loss on the extinguishment of debt	(400,000)	$ (353,000)
Through Fiscal Quarter Ended April 30, 2018 | Maximum
Debt Instrument [Line Items]
Consolidated net leverage ratio		650.00%
Until Twelve Months Ended April 30, 2022 | Maximum
Debt Instrument [Line Items]
Consolidated net leverage ratio		400.00%
Term Loan | Senior Secured Debt
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 550,000,000
Line of credit facility, term	7 years
Line of credit facility, outstanding		$ 540,000,000
Line of credit facility, outstanding interest rate		5.409%
Revolving Loan Facility | Senior Secured Debt
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 50,000,000
Line of credit facility, term	5 years
Line of credit facility, outstanding		$ 0		$ 35,800,000
Line of credit facility, additional borrowing capacity		47,100,000
Reserved for outstanding letters of credit		$ 2,900,000
Line of credit facility, outstanding interest rate				1.496%
Percentage of unused commitment fee on unused amount of commitments under revolving loan facility		0.50%
Revolving Loan Facility | Senior Secured Debt | Second Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 150,000,000

Long-Term Debt and Current Matu

Long-Term Debt and Current Maturities (Detail) - USD ($) $ in Thousands	Jul. 31, 2017	Jul. 31, 2016
Debt Instrument [Line Items]
Total debt	$ 540,000	$ 35,800
Current maturities of long-term debt	(3,167)
Unamortized debt issuance costs and original issue discount	(13,731)
Long-term debt, net of current maturities	523,102	35,800
Senior Secured Debt | Term Loan | Debt instrument, maturing on June 15, 2024
Debt Instrument [Line Items]
Total debt	$ 540,000
Senior Secured Debt | Revolving Loan Facility | Debt instrument, maturing on October 9, 2019
Debt Instrument [Line Items]
Total debt		$ 35,800

Long-Term Debt and Current Ma62

Long-Term Debt and Current Maturities (Parenthetical) (Detail) - Senior Secured Debt	12 Months Ended
	Jul. 31, 2017
Term Loan | Debt instrument, maturing on June 15, 2024
Debt Instrument [Line Items]
Loan maturity date	Jun. 15, 2024
Revolving Loan Facility | Debt instrument, maturing on October 9, 2019
Debt Instrument [Line Items]
Loan maturity date	Oct. 9, 2019
London Interbank Offered Rate (LIBOR) | Term Loan | Debt instrument, maturing on June 15, 2024
Debt Instrument [Line Items]
Variable interest rate	4.25%
London Interbank Offered Rate (LIBOR) | Revolving Loan Facility | Debt instrument, maturing on October 9, 2019
Debt Instrument [Line Items]
Variable interest rate	1.00%

Ratio of Net Funded Debt to Adj

Ratio of Net Funded Debt to Adjusted EBITDA (Detail) - Senior Secured Debt	Jun. 15, 2017
Term Loan | Range One
Debt Instrument [Line Items]
Variable interest rate	4.25%
Term Loan | Range Two
Debt Instrument [Line Items]
Variable interest rate	4.00%
Revolving Loan Facility | Range One
Debt Instrument [Line Items]
Variable interest rate	3.50%
Revolving Loan Facility | Range Three
Debt Instrument [Line Items]
Variable interest rate	3.25%
Revolving Loan Facility | Range Four
Debt Instrument [Line Items]
Variable interest rate	3.00%

Ratio of Net Funded Debt to A64

Ratio of Net Funded Debt to Adjusted EBITDA (Parenthetical) (Detail) - Senior Secured Debt	Jun. 15, 2017
Term Loan | Range One | Minimum
Debt Instrument [Line Items]
Ratio of Funded Debt to Adjusted EBITDA	425.00%
Term Loan | Range Two | Maximum
Debt Instrument [Line Items]
Ratio of Funded Debt to Adjusted EBITDA	425.00%
Revolving Loan Facility | Range One | Minimum
Debt Instrument [Line Items]
Ratio of Funded Debt to Adjusted EBITDA	425.00%
Revolving Loan Facility | Range Three | Minimum
Debt Instrument [Line Items]
Ratio of Funded Debt to Adjusted EBITDA	375.00%
Revolving Loan Facility | Range Three | Maximum
Debt Instrument [Line Items]
Ratio of Funded Debt to Adjusted EBITDA	425.00%
Revolving Loan Facility | Range Four | Maximum
Debt Instrument [Line Items]
Ratio of Funded Debt to Adjusted EBITDA	375.00%

Principal Payments Due Under Lo

Principal Payments Due Under Long-Term Debt Agreements (Detail) - USD ($) $ in Thousands	Jul. 31, 2017	Jul. 31, 2016
Debt Disclosure [Abstract]
Long-term debt	$ 540,000	$ 35,800
2,018	3,167
2,019	4,222
2,020	4,222
2,021	4,222
2,022	4,222
Thereafter	$ 519,945

Future Payments Under Certain C

Future Payments Under Certain Contractual Obligation (Detail) $ in Thousands	Jul. 31, 2017USD ($)
Commitments And Contingencies Disclosure [Abstract]
Operating leases, total	$ 20,671
Operating leases, first year	3,749
Operating leases, second year	3,345
Operating leases, third year	2,445
Operating leases, fourth year	1,618
Operating leases, fifth year	1,388
Operating leases, thereafter	8,126
Purchase obligation, total	81,542	[1]
Purchase obligation, first year	49,598	[1]
Purchase obligation, second year	23,756	[1]
Purchase obligation, third year	8,188	[1]
Contractual obligation, total	102,213
Contractual obligation, first year	53,347
Contractual obligation, second year	27,101
Contractual obligation, third year	10,633
Contractual obligation, fourth year	1,618
Contractual obligation, fifth year	1,388
Contractual obligation, thereafter	$ 8,126
[1]	Consists primarily of raw materials purchase contracts. These are typically not fixed price arrangements. The prices are based on the prevailing market prices.

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015	Apr. 30, 2015
Commitments And Contingencies Disclosure [Abstract]
Rent expenses related to operating leases	$ 3.7	$ 3.1	$ 3.4
FIFRA research and testing programs expenses	0.1	$ 0.4	$ 1
EPA estimated remediation cost	22
Litigation reserve				$ 1.3
Remaining litigation reserve	$ 1.1

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Defined Contribution Plan Disclosure [Line Items]
Percent of contribution made under plan	4.00%
Contribution made under plan	$ 0.7	$ 0.6	$ 0.6
Contribution made by foreign subsidiaries under defined contribution plans	2	1.6	$ 1.3
Benefit obligations in connection with foreign subsidiaries included in the acquisition of the UPC business	1.5	1.4
Liability under employee benefit arrangement	$ 0.4	$ 0.4
Employee benefit arrangement monthly payments start period	2013-04
The term of general obligation	10 years
First 3 Percent of Each Participant's Contributions
Defined Contribution Plan Disclosure [Line Items]
Defined Contribution Plan Employer Matching Contribution Percent Of Match	100.00%
Next Two Percent Contribution
Defined Contribution Plan Disclosure [Line Items]
Defined Contribution Plan Employer Matching Contribution Percent Of Match	50.00%

Basic and Diluted Earnings Per

Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Earnings Per Share [Abstract]
Net income from continuing operations	$ 5,338	$ 6,067	$ 6,486	$ 5,742	$ 3,743	$ 6,362	$ 3,979	$ 4,591	$ 23,633	$ 18,675	$ 12,138
Weighted average shares outstanding
Weighted average shares outstanding — basic									11,885	11,719	11,673
Dilutive effect of stock awards									401	207	106
Weighted average shares outstanding — diluted									12,286	11,926	11,779
Basic earnings per share	$ 0.45	$ 0.51	$ 0.55	$ 0.48	$ 0.32	$ 0.54	$ 0.34	$ 0.39	$ 1.99	$ 1.59	$ 1.04
Diluted earnings per share	$ 0.43	$ 0.49	$ 0.53	$ 0.47	$ 0.31	$ 0.53	$ 0.33	$ 0.39	$ 1.92	$ 1.57	$ 1.03

Earnings per Share - Additional

Earnings per Share - Additional Information (Detail) - shares	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Earnings Per Share [Abstract]
Number of shares potentially dilutive securities not included in the computation of diluted earnings per share	3,858	11,281	136

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Thousands

Apr. 28, 2017shares

Dec. 08, 2016shares

Oct. 21, 2016shares

Mar. 10, 2016shares

Jan. 29, 2016shares

Jan. 19, 2016shares

Sep. 24, 2013Installmentshares

Oct. 31, 2013USD ($)

Jul. 31, 2017USD ($)Tranche$ / sharesshares

Jul. 31, 2016USD ($)$ / sharesshares

Jul. 31, 2015USD ($)$ / sharesshares

Aug. 01, 2016$ / sharesshares

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Stock-based compensation expense | $

$ 6,259

$ 4,836

$ 2,766

Share based compensation, related tax benefits | $

2,200

$ 1,700

900

Unrecognized compensation costs related to outstanding stock awards | $

$ 8,300

Weighted average period for recognition of compensation cost

1 year 9 months 18 days

Series Award One

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Maximum award, as a percentage of target award

200.00%

200.00%

Series Award Three

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Maximum award, as a percentage of target award

200.00%

Performance Shares

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Target Award Shares

10,157

59,180

Target number of shares outstanding, non vested

328,731

Awards vested

180,851

Weighted average grant date fair value of performance share awards forfeited | $ / shares

$ 23.12

Weighted average per share grant date fair value | $ / shares

$ 25.49

$ 20.13

Total fair value of shares vested | $

$ 2,300

$ 2,100

$ 200

Performance Shares | Series Award One

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Target Award Shares

10,531

14,625

57,163

Performance Shares | Series Award Four

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Number of tranches | Tranche

2

Performance Shares | Series Award Four | Second Tranche

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Target Award Shares

4,546

44,337

43,926

Maximum award, as a percentage of target award

200.00%

Performance Shares | Series Award Three

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Target Award Shares

82,938

Time Based Shares

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Target Award Shares

34,501

[1]

177,799

[2]

Target number of shares outstanding, non vested

173,603

211,368

82,688

Awards vested

63,852

[3]

39,557

[4]

Weighted average grant date fair value of performance share awards forfeited | $ / shares

[5]

$ 25.85

$ 20.51

Weighted average per share grant date fair value | $ / shares

$ 24.37

$ 21.28

$ 19.66

Total fair value of shares vested | $

$ 1,500

$ 800

$ 900

Christopher T. Fraser

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Share based payment recognized | $

$ 1,100

Christopher T. Fraser | Common Stock

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Target Award Shares

50,000

Christopher T. Fraser | Time Based Restricted Stock Awards

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Target Award Shares

30,000

Shares award vesting period

5 years

Christopher T. Fraser | Performance Based Restricted Stock Awards

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Target Award Shares

70,000

Share based compensation award number of installments | Installment

5

Christopher T. Fraser | Time Based Shares

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Target Award Shares

80,000

Shares award vesting period

5 years

Awards vested

6,000

6,000

2016 LTI Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares available for future grant

6,707

2016 LTI Plan | Maximum

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Maximum number of shares approved under the LTI plan

500,000

2016 LTI Plan | Executive Officer | Maximum | Performance Shares

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Maximum number of shares approved under the LTI plan

200,000

2009 LTI Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares available for future grant

65,730

2009 LTI Plan | Maximum

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Maximum number of shares approved under the LTI plan

750,000

2009 LTI Plan | Executive Officer | Maximum | Performance Shares

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Maximum number of shares approved under the LTI plan

250,000

Cumulative Revenue and Stockholder Return | Christopher T. Fraser | Performance Shares

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Target Award Shares

82,938

[1]

Includes 12,580 share awards granted to non-employee directors during fiscal year 2017. Includes 11,342 share awards granted to certain employees during fiscal year 2017 as special compensation. Includes 10,579 share awards granted to certain employees during fiscal year 2017 which are expected to vest on July 31, 2019. The Company recognizes compensation expense related to the awards on a straight-line basis over the respective service period

[2]

Includes 19,007 shares awards granted to non-employee directors during fiscal year 2016. Includes 7,000 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 71,792 share awards granted to certain employees and executives during fiscal year 2016 which are expected to vest on October 31, 2018. Also includes 80,000 share awards granted to Mr. Fraser which vest over a service period of five years beginning on August 1, 2015. The share awards are to vest one third (1/3) at the end of years three, four and five of the service period. The Company recognizes compensation expense related to the awards over the respective service period.

[3]

Includes 12,580 share awards granted to non-employee directors for service during fiscal year 2017. The share awards vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 51,272 share awards granted to employees. The vested amount includes 6,000 share awards granted to Mr. Fraser.

[4]

Includes 19,007 share awards granted to non-employee directors for service during fiscal year 2016. The share awards vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 20,550 share awards granted to employees. The vested amount includes 6,000 share awards granted to Mr. Fraser.

[5]

Forfeitures includes awards that were granted in fiscal years 2017 and 2016 to certain employees that were forfeited at the termination of their employment.

Summary of Performance Based St

Summary of Performance Based Stock Awards (Detail) - Performance Shares - $ / shares		Apr. 28, 2017	Dec. 08, 2016	Oct. 21, 2016	Mar. 10, 2016	Jan. 29, 2016	Jan. 19, 2016	Jul. 31, 2017	Jul. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target Award Shares								10,157	59,180
Target Award Shares, forfeited	[1]		(374)	(4,957)		(12,608)
Shares Projected to Vest or Vested									118,360
Series Award One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant Dates			Dec. 8, 2016		Mar. 10, 2016	Jan. 29, 2016
Target Award Shares			10,531		14,625	57,163
Grant Date Fair Value			$ 34.95		$ 21.89	$ 21.80
Measurement Period Ending			Jul. 31, 2019		Oct. 31, 2018	Oct. 31, 2018
Actual or Expected Percentage of Vesting	[2]							188.00%	200.00%
Shares Projected to Vest or Vested								19,063
Series Award Four | Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant Dates		Apr. 28, 2017		Oct. 21, 2016
Target Award Shares		4,545		44,337				43,925
Grant Date Fair Value		$ 52.55		$ 29.11
Measurement Period Ending		Jul. 31, 2019		Jul. 31, 2019
Actual or Expected Percentage of Vesting	[2]							100.00%
Shares Projected to Vest or Vested								43,925
Series Award Four | Tranche Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant Dates		Apr. 28, 2017		Oct. 21, 2016
Target Award Shares		4,546		44,337				43,926
Grant Date Fair Value		$ 52.55		$ 29.11
Measurement Period Ending		Jul. 31, 2019		Jul. 31, 2019
Actual or Expected Percentage of Vesting	[2]							188.00%
Shares Projected to Vest or Vested								82,443
Series Award Three
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant Dates							Jan. 29, 2016
Target Award Shares							82,938
Grant Date Fair Value							$ 20.89
Measurement Period Ending							Jul. 31, 2020
Actual or Expected Percentage of Vesting	[2]						133.00%
Shares Projected to Vest or Vested							110,584
[1]	Forfeitures include Series 1 and Series 4 awards that were granted in fiscal years 2017 and 2016 to certain employees that were forfeited at the termination of their employment
[2]	The percentage vesting for performance share awards is currently estimated at 188% and 200% of the target award for Series 1 awards granted in fiscal years 2017 and 2016, respectively, 133% of the target award for Series 3 awards granted in fiscal year 2016, and 100% and 188% of the target award for the first and second tranches, respectively, of the Series 4 awards granted in fiscal year 2017.

Summary of Performance Based 73

Summary of Performance Based Stock Awards (Parenthetical) (Detail)	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Series Award One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected Percentage of Vesting	188.00%	200.00%
Series Award Three
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected Percentage of Vesting		133.00%
Series Award Four | Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected Percentage of Vesting	100.00%
Series Award Four | Tranche Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected Percentage of Vesting	188.00%

Summary of Activity for Time-Ba

Summary of Activity for Time-Based Stock Awards (Detail) - Time Based Shares - $ / shares		12 Months Ended
		Jul. 31, 2017		Jul. 31, 2016
Non-vested Shares
Beginning balance, Non-vested		211,368		82,688
Granted		34,501	[1]	177,799	[2]
Vested		(63,852)	[3]	(39,557)	[4]
Forfeited	[5]	(8,414)		(9,562)
Ending balance, Non-vested		173,603		211,368
Weighted-Average Grant-Date Fair Value
Beginning balance, Non-vested		$ 21.28		$ 19.66
Granted		41.23	[1]	21.94	[2]
Vested		23.55	[3]	21.04	[4]
Forfeited	[5]	25.85		20.51
Ending balance, Non-vested		$ 24.37		$ 21.28
[1]	Includes 12,580 share awards granted to non-employee directors during fiscal year 2017. Includes 11,342 share awards granted to certain employees during fiscal year 2017 as special compensation. Includes 10,579 share awards granted to certain employees during fiscal year 2017 which are expected to vest on July 31, 2019. The Company recognizes compensation expense related to the awards on a straight-line basis over the respective service period
[2]	Includes 19,007 shares awards granted to non-employee directors during fiscal year 2016. Includes 7,000 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 71,792 share awards granted to certain employees and executives during fiscal year 2016 which are expected to vest on October 31, 2018. Also includes 80,000 share awards granted to Mr. Fraser which vest over a service period of five years beginning on August 1, 2015. The share awards are to vest one third (1/3) at the end of years three, four and five of the service period. The Company recognizes compensation expense related to the awards over the respective service period.
[3]	Includes 12,580 share awards granted to non-employee directors for service during fiscal year 2017. The share awards vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 51,272 share awards granted to employees. The vested amount includes 6,000 share awards granted to Mr. Fraser.
[4]	Includes 19,007 share awards granted to non-employee directors for service during fiscal year 2016. The share awards vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 20,550 share awards granted to employees. The vested amount includes 6,000 share awards granted to Mr. Fraser.
[5]	Forfeitures includes awards that were granted in fiscal years 2017 and 2016 to certain employees that were forfeited at the termination of their employment.

Summary of Activity for Time-75

Summary of Activity for Time-Based Stock Awards (Parenthetical) (Detail) - Time Based Shares - shares	12 Months Ended
	Jul. 31, 2017		Jul. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards granted	34,501	[1]	177,799	[2]
Time based stock awards Vested	63,852	[3]	39,557	[4]
Non-Employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards granted	12,580		19,007
Time based stock awards Vested	12,580		19,007
Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards granted	11,342		7,000
Time based stock awards Vested	51,272		20,550
Employees and Executives
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards granted	10,579		71,792
Christopher T. Fraser
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards granted			80,000
Stock awards granted, vesting period			5 years
Stock awards granted, vesting period, description	The share awards are to vest one third (1/3) at the end of years three, four and five of the service period.
Time based stock awards Vested	6,000		6,000
[1]	Includes 12,580 share awards granted to non-employee directors during fiscal year 2017. Includes 11,342 share awards granted to certain employees during fiscal year 2017 as special compensation. Includes 10,579 share awards granted to certain employees during fiscal year 2017 which are expected to vest on July 31, 2019. The Company recognizes compensation expense related to the awards on a straight-line basis over the respective service period
[2]	Includes 19,007 shares awards granted to non-employee directors during fiscal year 2016. Includes 7,000 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 71,792 share awards granted to certain employees and executives during fiscal year 2016 which are expected to vest on October 31, 2018. Also includes 80,000 share awards granted to Mr. Fraser which vest over a service period of five years beginning on August 1, 2015. The share awards are to vest one third (1/3) at the end of years three, four and five of the service period. The Company recognizes compensation expense related to the awards over the respective service period.
[3]	Includes 12,580 share awards granted to non-employee directors for service during fiscal year 2017. The share awards vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 51,272 share awards granted to employees. The vested amount includes 6,000 share awards granted to Mr. Fraser.
[4]	Includes 19,007 share awards granted to non-employee directors for service during fiscal year 2016. The share awards vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 20,550 share awards granted to employees. The vested amount includes 6,000 share awards granted to Mr. Fraser.

Segment Information - Additiona

Segment Information - Additional Information (Detail)	12 Months Ended
	Jul. 31, 2017FacilitySegmentCountry	Jul. 31, 2016	Jul. 31, 2015
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	2
International
Segment Reporting Information [Line Items]
Number of facilities dedicated to manufacturing blending and distributing products	19
Number of countries in which facilities dedicated to manufacturing blending and distributing products operates | Country	8
United States
Segment Reporting Information [Line Items]
Number of facilities dedicated to manufacturing blending and distributing products	7
Percentage of long lived assets dedicated to manufacturing blending and distributing products	64.00%
Customer Concentration Risk | Sales
Segment Reporting Information [Line Items]
Revenue generated from single external customer	23.00%	26.00%	23.00%

Segment Information (Detail)

Segment Information (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2017		Jul. 31, 2016		Jul. 31, 2015
Segment Reporting Information [Line Items]
Net sales		$ 96,260	$ 81,616	$ 79,071	$ 76,495	$ 75,301	$ 75,168	$ 70,859	$ 76,650	$ 333,442		$ 297,978		$ 320,498
Depreciation and amortization	[1]									16,964		14,534		13,531
Income from operations		10,245	$ 9,367	$ 9,040	$ 8,681	7,085	$ 7,029	$ 6,137	$ 7,320	37,333	[2]	27,571	[2]	16,589	[2]
Goodwill and intangible assets, net		544,792				56,134				544,792		56,134		58,968
Total assets		792,431				237,028				792,431		237,028		242,359
Operating Segments | Electronic Chemicals
Segment Reporting Information [Line Items]
Net sales										276,621		261,523		265,608
Depreciation and amortization	[1]									11,455		11,832		12,257
Income from operations	[2]									35,317		32,141		21,787
Goodwill and intangible assets, net		16,446				17,625				16,446		17,625		19,778
Total assets		171,202				165,561				171,202		165,561		169,355
Operating Segments | Performance Materials
Segment Reporting Information [Line Items]
Net sales										56,821		36,455		54,820
Depreciation and amortization	[1]									3,857		1,149		626
Income from operations	[2]									13,804		12,631		8,735
Goodwill and intangible assets, net		528,346				38,509				528,346		38,509		39,190
Total assets		596,872				53,798				596,872		53,798		58,878
Other Activities
Segment Reporting Information [Line Items]
Net sales														70
Depreciation and amortization	[1]									1,652		1,553		648
Income from operations	[2]									(11,788)		(17,201)		(13,933)
Total assets		$ 24,357				$ 17,669				$ 24,357		$ 17,669		$ 14,126
[1]	Segment depreciation excludes depreciation for restructuring and realignment.
[2]	Segment income from operations includes allocated corporate overhead expenses, but excludes restructuring and realignment charges, which are included in the Other Activities column.

Geographic Data (Detail)

Geographic Data (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Segment Reporting Information [Line Items]
Net sales		$ 96,260	$ 81,616	$ 79,071	$ 76,495	$ 75,301	$ 75,168	$ 70,859	$ 76,650	$ 333,442	$ 297,978	$ 320,498
Property, plant and equipment, net	[1]	105,435				79,739				105,435	79,739
United States
Segment Reporting Information [Line Items]
Net sales										180,075	162,427	183,384
Property, plant and equipment, net		67,490				47,118				67,490	47,118
International
Segment Reporting Information [Line Items]
Net sales										153,367	135,551	$ 137,114
Property, plant and equipment, net		$ 37,945				$ 32,621				$ 37,945	$ 32,621
[1]	In fiscal year 2016, as part of the Company’s ongoing review of its Milan production facilities, the Company determined that certain other facilities had excess capacity sufficient to absorb the manufacturing operations of one of its Milan plants. As a result, the Company committed to sell properties with a total estimated fair value, less costs to sell, of approximately $4.3 million at July 31, 2016. Assets held for sale are included in Prepaid expenses and other in Current assets. The Company obtained an updated third party market analysis on the property and has increased marketing and advertising efforts and expects the sale of the property to be completed during fiscal year 2018. The fair value measurements were based on recent valuation appraisals.

Restructuring and Realignment79

Restructuring and Realignment Events - Additional Information (Detail) $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2015Facility	Jul. 31, 2017USD ($)	Jul. 31, 2016USD ($)	Jul. 31, 2015USD ($)	Oct. 31, 2014USD ($)
Restructuring Cost And Reserve [Line Items]
Accelerated depreciation			$ 300	$ 900
Asset retirement obligation			168	811
Asia | Electronic Chemicals
Restructuring Cost And Reserve [Line Items]
Severance Costs		$ 200
Milan, Italy
Restructuring Cost And Reserve [Line Items]
Number of closed facilities | Facility	1
Closed Facilities
Restructuring Cost And Reserve [Line Items]
Restructuring charges over fiscal years 2016 and 2015			$ 1,800	$ 1,800
Hydrofluoric Acid Business
Restructuring Cost And Reserve [Line Items]
Asset retirement obligation					$ 3,700

Restructuring and Realignment80

Restructuring and Realignment Events - Accrued Liability Associated with Restructuring and Other Related Charges (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	$ 757	$ 902
Payments	(403)	(156)
Adjustment	(277)	11
Accrued liability, Ending balance	77	757
Employee costs
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	721	716
Payments	(362)	(4)
Adjustment	(359)	9
Accrued liability, Ending balance		721
Decommissioning and Environmental
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	36	169
Payments	(41)	(135)
Adjustment	82	2
Accrued liability, Ending balance	$ 77	36
Other
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance		17
Payments		$ (17)

Restructuring and Realignment81

Restructuring and Realignment Events - Schedule of Changes in Asset Retirement Obligation Associated with Realignment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Restructuring And Related Activities [Abstract]
Asset retirement obligation, Beginning balance	$ 168	$ 811
Charges	(3)	129
Payments	$ (165)	(772)
Asset retirement obligation, Ending balance		$ 168

Selected Quarterly Financial 82

Selected Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2017		Jul. 31, 2016		Jul. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 96,260	$ 81,616	$ 79,071	$ 76,495	$ 75,301	$ 75,168	$ 70,859	$ 76,650	$ 333,442		$ 297,978		$ 320,498
Gross profit	36,742	32,510	31,202	29,684	28,857	29,158	28,233	29,260	130,138		115,508		109,477
Operating income	10,245	9,367	9,040	8,681	7,085	7,029	6,137	7,320	37,333	[1]	27,571	[1]	16,589	[1]
Income before income taxes	5,915	9,210	8,583	8,734	6,523	8,522	6,034	7,151	32,442		28,230		18,884
Net income	$ 5,338	$ 6,067	$ 6,486	$ 5,742	$ 3,743	$ 6,362	$ 3,979	$ 4,591	$ 23,633		$ 18,675		$ 12,138
Net income per share
- basic	$ 0.45	$ 0.51	$ 0.55	$ 0.48	$ 0.32	$ 0.54	$ 0.34	$ 0.39	$ 1.99		$ 1.59		$ 1.04
- diluted	$ 0.43	$ 0.49	$ 0.53	$ 0.47	$ 0.31	$ 0.53	$ 0.33	$ 0.39	$ 1.92		$ 1.57		$ 1.03
[1]	Segment income from operations includes allocated corporate overhead expenses, but excludes restructuring and realignment charges, which are included in the Other Activities column.

Schedule II - Valuation And Q83

Schedule II - Valuation And Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Allowance for Doubtful Accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 210	$ 144	$ 272
Charged to costs and expenses	(156)	7
Additions/ Deductions	209	59	(128)
Balance at end of period	263	210	144
Inventory Valuation and Obsolescence
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	654	481	290
Charged to costs and expenses	(22)	173	941
Additions/ Deductions	(2)		(750)
Balance at end of period	630	654	481
Valuation Allowance on Deferred Tax Assets
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	2,895	2,016	1,725
Charged to costs and expenses	(1,127)	(360)	291
Additions/ Deductions		1,239
Balance at end of period	$ 1,768	$ 2,895	$ 2,016