KMG Chemicals 10-K 27 Nov 15 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2015	Nov. 23, 2015	Jan. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jul. 31, 2015
Document Fiscal Year Focus	2,015
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		11,715,586
Entity Public Float			$ 181.3

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 31, 2015	Jul. 31, 2014
Current assets
Cash and cash equivalents	$ 7,517	$ 19,252
Accounts receivable
Trade, net of allowances of $144 at July 31, 2015 and $272 at July 31, 2014	36,887	40,176
Other	3,668	1,904
Inventories, net	42,082	45,268
Current deferred tax assets	2,953	1,577
Prepaid expenses and other	3,738	3,476
Total current assets	96,845	111,653
Property, plant and equipment, net	80,589	92,450
Deferred tax assets	131	442
Goodwill	22,408	12,595
Intangible assets, net	36,560	28,353
Restricted cash	1,000	1,000
Other assets, net	4,826	4,365
Total assets	242,359	250,858
Current liabilities
Accounts payable	35,980	36,690
Accrued liabilities	9,602	16,986
Employee incentive accrual	4,852	4,575
Total current liabilities	50,434	58,251
Long-term debt	53,000	60,000
Deferred tax liabilities	13,075	9,881
Other long-term liabilities	2,429	2,520
Total liabilities	$ 118,938	$ 130,652
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, 11,690,439 shares issued and outstanding at July 31, 2015 and 11,649,001 shares issued and outstanding at July 31, 2014	$ 117	$ 116
Additional paid-in capital	31,676	28,886
Accumulated other comprehensive income/(loss)	(9,667)	645
Retained earnings	101,295	90,559
Total stockholders’ equity	123,421	120,206
Total liabilities and stockholders’ equity	$ 242,359	$ 250,858

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2015	Jul. 31, 2014
Statement Of Financial Position [Abstract]
Allowances for accounts receivables	$ 144	$ 272
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	11,690,439	11,649,001
Common stock, shares outstanding	11,690,439	11,649,001

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Income Statement [Abstract]
Net sales	$ 320,498	$ 353,406	$ 263,311
Cost of sales	211,021	249,907	186,841
Gross profit	109,477	103,499	76,470
Distribution expenses	48,523	50,251	30,312
Selling, general and administrative expenses	37,461	38,421	28,978
Restructuring charges	1,279	6,359
Realignment charges	5,625	4,517
Operating income	16,589	3,951	17,180
Other income/(expense)
Interest expense, net	(1,407)	(2,854)	(1,771)
Gain on sale of creosote distribution business, net	5,448
Other non-operating expense	(1,250)
Other, net	(496)	(831)	(208)
Total other income/(expense), net	2,295	(3,685)	(1,979)
Income from continuing operations before income taxes	18,884	266	15,201
Provision for income taxes	(6,746)	(1,254)	(5,715)
Income/(loss) from continuing operations	12,138	(988)	9,486
Discontinued operations
Loss from discontinued operations, before income taxes			(203)
Income tax benefit			65
Loss from discontinued operations			(138)
Net income/(loss)	$ 12,138	$ (988)	$ 9,348
Basic
Income/(loss) from continuing operations	$ 1.04	$ (0.09)	$ 0.82
Loss from discontinued operations			(0.01)
Net income/(loss)	1.04	(0.09)	0.81
Diluted
Income/(loss) from continuing operations	1.03	(0.09)	0.82
Loss from discontinued operations			(0.01)
Net income/(loss)	$ 1.03	$ (0.09)	$ 0.81
Weighted average shares outstanding
Basic	11,673	11,615	11,487
Diluted	11,779	11,615	11,578

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income/(loss)	$ 12,138	$ (988)	$ 9,348
Other comprehensive income/(loss)
Foreign currency translation gain/(loss)	(10,202)	3,149	1,835
Pension and other post-retirement benefit liability adjustments	(110)
Total other comprehensive income/(loss)	(10,312)	3,149	1,835
Total comprehensive income	$ 1,826	$ 2,161	$ 11,183

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, 2012	$ 106,767	$ 114	$ 26,022	$ (4,339)	$ 84,970
Beginning Balance (in shares) at Jul. 31, 2012		11,406
Cash dividends	(1,378)				(1,378)
Stock options/warrants exercised, value	70		70
Stock options/warrants exercised, shares		70
Restricted stock issued, value		$ 1	(1)
Restricted stock issued, shares		46
Stock-based compensation expense	446		446
Tax benefit from stock-based awards	529		529
Other	(377)		(377)
Net income/(loss)	9,348				9,348
Gain/(loss) on foreign currency translation	1,835			1,835
Ending Balance at Jul. 31, 2013	117,240	$ 115	26,689	(2,504)	92,940
Ending Balance (in shares) at Jul. 31, 2013		11,522
Cash dividends	(1,393)				(1,393)
Stock options/warrants exercised, shares		47
Restricted stock issued, value		$ 1	(1)
Restricted stock issued, shares		80
Stock-based compensation expense	2,231		2,231
Tax benefit from stock-based awards	328		328
Other	(361)		(361)
Net income/(loss)	(988)				(988)
Gain/(loss) on foreign currency translation	3,149			3,149
Ending Balance at Jul. 31, 2014	120,206	$ 116	28,886	645	90,559
Ending 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/(loss)	12,138				12,138
Gain/(loss) on foreign currency translation	(10,202)			(10,202)
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
Pension liability adjustment	$ (110)			$ (110)

CONSOLIDATED STATEMENTS OF STO7

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
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, 2015	Jul. 31, 2014	Jul. 31, 2013
Cash flows from operating activities
Net income/(loss)	$ 12,138	$ (988)	$ 9,348
Adjustments to reconcile net income/(loss) to net cash provided by operating activities
Depreciation and amortization	13,531	14,117	8,295
Depreciation related to restructuring and realignment	5,640	4,210
Non-cash Impairment charges		2,741
Amortization of loan costs included in interest expense	153	60	41
Stock-based compensation expense	2,766	2,231	446
Bad debt expense		128	208
Allowance for excess and obsolete inventory	941	634	(355)
Gain on sale of creosote business	(5,448)
Loss on sale of animal health business			57
(Gain) loss on disposal of property		(28)	59
Deferred income tax expense/(benefit)	(3,532)	(2,227)	1,247
Tax benefit from stock-based awards	23	(328)	(529)
Changes in operating assets and liabilities, net of effects of acquisition
Accounts receivable — trade	1,265	2,137	1,813
Accounts receivable — other	(1,884)	746	(2,593)
Inventories	(740)	7,861	(1,018)
Other current and non-current assets	(633)	822	(654)
Accounts payable	1,234	398	5,301
Accrued liabilities and other	(7,886)	7,844	(1,394)
Net cash provided by operating activities	17,568	40,358	20,272
Cash flows from investing activities
Additions to property, plant and equipment	(13,821)	(9,497)	(5,505)
Disposals of property, plant and equipment	2,572	74
Acquisition of Ultra Pure Chemicals, net of cash acquired		149	(62,608)
Acquisition of industrial lubricants business	(21,938)
Proceeds from sale of creosote business	14,899
Net cash used in investing activities	(18,288)	(9,274)	(68,113)
Cash flows from financing activities
Net borrowings/(payments) under revolving loan facility	(40,000)	(25,000)	61,000
Deferred financing costs	(666)		(229)
Proceeds from borrowing under New Credit Facility	59,100
Net payments under New Credit Facility	(6,100)
Principal payments on borrowings on term loan	(20,000)
Proceeds from exercise of stock options and warrants			70
Tax benefit from stock-based awards	(23)	328	529
Payment of dividends	(1,402)	(1,393)	(1,378)
Net cash provided by/(used in) financing activities	(9,091)	(26,065)	59,992
Effect of exchange rate changes on cash	(1,924)	284	165
Net increase (decrease) in cash and cash equivalents	(11,735)	5,303	12,316
Cash and cash equivalents at the beginning of year	19,252	13,949	1,633
Cash and cash equivalents at end of year	7,517	19,252	13,949
Supplemental disclosures of cash flow information
Cash paid for interest	1,321	2,562	1,709
Cash paid for income taxes	12,182	865	5,854
Supplemental disclosure of non-cash investing activities
Purchase of property, plant and equipment through accounts payable	882	$ 1,135	$ 649
Accrued liabilities under industrial lubricants business acquisition	$ 1,798

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Jul. 31, 2015
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 in carefully focused markets through its three wholly-owned subsidiaries, KMG Electronic Chemicals, Inc. (“KMG EC”), KMG-Bernuth, Inc. (“KMG Bernuth”) and KMG Val-Tex, LLC (“Val-Tex”). In its electronic chemicals business, the Company sells high purity wet process chemicals to the semiconductor industry. In the wood treating chemicals business, the Company sells industrial wood treating chemicals based on pentachlorophenol (“penta”). In its industrial valve lubricants and sealants business, the Company sells industrial lubricants and sealants, primarily to the oil and gas storage, pipeline and gas distribution markets, as well as related products, such as lubrication equipment and fittings. The Company operates its electronic chemicals business through KMG EC in North America and through KMG Italia, S.r.l. (“KMG Italia”) and KMG Electronic Chemicals Holdings S.a.r.l (“KMG Lux”) (and its subsidiaries) in Europe and Asia. That business has facilities in the United States, the United Kingdom, France, Italy and Singapore. In the wood treating business the Company manufactures penta at its plant in Matamoros, Mexico through KMG de Mexico (“KMEX”), a Mexican corporation which is a wholly-owned subsidiary of KMG Bernuth. The Company sells its wood treating chemicals in the United States, Mexico and Canada. The Company operates its industrial valve lubricants and sealants business through Val-Tex, a Texas limited liability company. That business has one facility in the United States. The Company has two reportable segments, electronic chemicals and other chemicals. The other chemicals segment includes the Company’s wood treating chemicals business and its industrial valve lubricants and sealants business. See Note 13. 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. Reclassifications — Certain reclassifications of prior year amounts have been made to conform to current year presentation. These reclassifications had no impact on net income (loss) or total stockholders’ equity as previously reported. 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, 2015 and 2014 includes proceeds that were placed in escrow in connection with the sale of the animal health business. See Note 12. 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, 2015 and 2014 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. At July 31, 2015 there was one customer that represented approximately 9.1% of the Company’s accounts receivable. At July 31, 2014 there was one customer that represented approximately 15% of the Company’s accounts receivable. 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 $144,000 and $272,000 at July 31, 2015 and 2014, 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 $17.5 million and $16.5 million (including accelerated depreciation of $5.6 million and $4.2 million) in fiscal years 2015 and 2014, respectively. See Notes 4 and 14. Intangible Assets — Identifiable intangible assets with a defined life are amortized using a straight-line or accelerated 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, 2015 and 2014. The Company therefore concluded that its indefinite lived intangible assets were not impaired as of July 31, 2015 and 2014. 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 $14.5 million and $7.9 million associated with its other chemicals and electronic chemicals segments, respectively, as of July 31, 2015. As part of the goodwill impairment analysis, current accounting standards give us 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 of each year. In 2015, 2014 and 2013, the Company’s goodwill impairment tests indicated that 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 wrote off goodwill in the amount of approximately $662,000 that was previously a part of the wood treating chemicals reporting unit. 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, and intangible assets with defined lives, 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. The Company recognized an impairment loss in fiscal year 2014 of $2.7 million on certain long-lived assets at the Bay Point, California facility where Chemtrade toll manufactures for the Company. 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. In general, risk of loss transfers upon shipment to customers. 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. Cost of Sales — Cost of sales includes inbound freight charges, purchasing and receiving costs, depreciation, inspection costs and internal transfer costs. In the case of products manufactured by the Company, direct and indirect manufacturing costs 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, 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 liability method of accounting for income taxes in accordance with current accounting standards regarding the accounting for income taxes. 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 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 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 5. Earnings Per Share — Basic earnings per common share amounts are calculated using the 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 Mexico operations is the U.S. Dollar. As a result, monetary assets and liabilities for KMEX are re-measured to U.S. dollars at current rates at the balance sheet dates, income statement items are re-measured at the average monthly exchange rates for the dates those items were recognized, and certain assets (including plant and production equipment) are re-measured at historical exchange rates. Foreign currency transaction gains and losses are included in the statement of operations as incurred along with gains and losses from currency re-measurement. These gains and losses were nominal in fiscal years 2015, 2014 and 2013. The Company’s international operations in the electronic chemicals business are in Europe and Singapore, and use local currencies as the functional currency, including the GB Pound, Euro and Singapore 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 $(10.2) million, $3.1 million and $1.8 million in fiscal years 2015, 2014 and 2013, 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 April 2014, the Financial Accounting Standards Board (FASB) Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers,” which provides guidance for revenue recognition. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The new guidance is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is currently assessing the potential impact of ASU No. 2014-09 on its financial statements.

Acquisitions

Acquisitions	12 Months Ended
	Jul. 31, 2015
Business Combinations [Abstract]
Acquisitions	2. ACQUISITIONS 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. $500,000 of the holdback related to inventory adjustments was released in August 2015. The remaining $500,000 of the holdback for potential indemnity claims will be released eighteen months after the closing. 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. See Note 7 for further discussion of the Company’s revolving credit facility. 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 preliminary acquired assets and liability 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 (6,178 ) Net assets acquired 12,355 Goodwill 11,352 Total purchase consideration $ 23,707 The Company recognized $2.1 million in net sales and net income of $0.5 million related to the acquired business, in its consolidated statements of income for the fiscal year ended July 31, 2015. 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. On May 31, 2013, the Company completed its acquisition of the ultra pure chemicals (“UPC”) business subsidiaries of OM Group, Inc. (“OM Group”) located in the United States, Europe and Singapore. The subsidiaries sell high purity and ultra pure, wet process chemicals to the semiconductor industry. The Company completed the acquisition by borrowing $65.0 million on the revolving loan under its revolving credit facility on May 31, 2013. See Note 7 for further discussion of the Company’s revolving credit facility. During 2014, the Company entered into a settlement agreement with OM Group to finalize working capital adjustments related to the purchase price. The final purchase price of the UPC acquisition totaled $63.2 million. The Company received a net payment of $149,000 as part of the settlement of working capital adjustments. The Company accounted for the UPC acquisition under the acquisition method of accounting in accordance with GAAP. The Company expensed transaction and acquisition-related costs of approximately $2.1 million in fiscal year 2013, which is included in selling, general and administrative expenses on the Company’s consolidated statement of income. The following table summarizes final 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 the UPC acquisition date (in thousands): Cash $ 689 Accounts receivable 14,698 Inventory 11,047 Other current assets 1,963 Property, plant and equipment 28,939 Intangible assets: Value of product qualifications 12,800 Non-compete agreement 1,900 Transition services 154 Total intangible assets 14,854 Total assets acquired $ 72,190 Current liabilities 11,401 Other long-term liabilities 6,206 Total liabilities assumed 17,607 Net assets acquired $ 54,583 The following table sets forth pro forma results for the fiscal year ended July 31, 2013 had the UPC acquisition occurred as of the beginning of fiscal year 2013. The unaudited pro forma financial information is not necessarily indicative of what our consolidated results of operations would have been had we completed the UPC acquisition as of the dates indicated. (Unaudited) (in thousands, except per share data) 2013 Revenues $ 340,427 Operating income 15,955 Net income 9,123 Earnings per share — basic $ 0.79 The Company recognized $16.0 million of net sales and net income of $979,000, and integration costs of $577,000 related to the acquired UPC business, in its consolidated statements of income for the fiscal year ended July 31, 2013. The supplemental pro forma information for the UPC acquisition includes incremental interest expense from the Company’s revised credit facility of $1.0 million for the year ended July 31, 2013, excludes $2.1 million of acquisition-related costs incurred in fiscal year 2013, and includes incremental depreciation and amortization expense of approximately $3.1 million for the year ended July 31, 2013.

Inventories

Inventories	12 Months Ended
	Jul. 31, 2015
Inventory Disclosure [Abstract]
Inventories	3. INVENTORIES Inventories are summarized as follows at July 31, 2015 and 2014 (in thousands): 2015 2014 Raw materials and supplies $ 8,723 $ 7,914 Work in process 780 1,508 Supplies 525 1,793 Finished products 32,535 34,343 Less reserve for inventory obsolescence (481 ) (290 ) Inventories, net $ 42,082 $ 45,268

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Jul. 31, 2015
Property Plant And Equipment [Abstract]
Property, Plant and Equipment	4. PROPERTY, PLANT AND EQUIPMENT Property, plant, and equipment and related accumulated depreciation and amortization are summarized as follows at July 31, 2015 and 2014 (in thousands): 2015 2014 Land $ 13,257 $ 15,763 Buildings and improvements 38,036 42,664 Equipment 84,273 77,557 Leasehold improvements 193 143 135,759 136,127 Less accumulated depreciation and amortization (61,936 ) (52,972 ) 73,823 83,155 Construction-in-progress 6,766 9,295 Property, plant and equipment, net $ 80,589 $ 92,450

Income Taxes

Income Taxes	12 Months Ended
	Jul. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	5. INCOME TAXES The Company is subject to United States federal, state and foreign taxes on its operations. The geographical sources of income from continuing operations before income taxes for each of the three years ended July 31 are as follows (in thousands): 2015 2014 2013 United States $ 20,442 $ 1,923 $ 12,033 Foreign (1,558 ) (1,657 ) 3,168 Income from continuing operations before income taxes $ 18,884 $ 266 $ 15,201 The components of income tax expense/(benefit) from continuing operations for the years ended July 31 consisted of the following (in thousands): 2015 2014 2013 Current: Federal $ 9,176 $ 2,582 $ 2,833 Foreign (127 ) 1,071 1,437 State 1,214 603 197 10,263 4,256 4,467 Deferred: Federal (3,660 ) (1,978 ) 1,426 Foreign 293 (897 ) (282 ) State (150 ) (127 ) 104 (3,517 ) (3,002 ) 1,248 Total $ 6,746 $ 1,254 $ 5,715 The Company allocated income tax benefit of $65,000 to discontinued operations for the fiscal year ended July 31, 2013. 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, 2015 and 2014 (in thousands): 2015 2014 Deferred tax assets: Current deferred tax assets: Bad debt expense $ 238 $ 326 Inventory 675 787 Accrued liabilities 227 1,545 Employee benefits 2,025 1,879 Other 972 102 Less valuation allowance (34 ) (636 ) Total current deferred tax assets $ 4,103 $ 4,003 Non-current deferred tax assets Net operating loss $ 1,629 $ 839 Deferred compensation 1,490 616 Other 295 — Less valuation allowance (1,982 ) (1,090 ) Total non-current deferred tax assets $ 1,432 $ 365 Deferred tax liabilities: Current deferred tax liabilities: Other $ — $ (128 ) Prepaid assets (341 ) (398 ) Total current deferred tax liabilities: $ (341 ) $ (526 ) Non-current deferred tax liabilities: Difference in amortization basis of intangibles $ (11,131 ) $ (7,129 ) Difference in depreciable basis of property (4,182 ) (4,575 ) Total non-current deferred tax liabilities (15,313 ) (11,704 ) Net non-current deferred tax liability $ (10,119 ) $ (7,862 ) As of July 31, 2015, the Company has $5.5 million of foreign net operating losses carry forwards, which do not expire. 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 remain open for fiscal year ended July 31, 2012 and forward for United States federal income taxes and fiscal year ended July 31, 2010 and forward for state tax jurisdictions. On August 28, 2014, the Company was notified by the Internal Revenue Service that the federal income tax return for the July 31, 2013 fiscal year-end had been selected for examination. The audit is ongoing at this time. The Company’s subsidiary in Italy is contesting income tax assessments for the three year period ended July 31, 2011 and a registration tax assessment for the December 2007 purchase of the electronic chemicals business in Italy. Adjustments were proposed by the taxing authorities that would result in approximately $2.8 million (including interest and penalties) of additional liability, if all the adjustments are sustained. In October 2014, the Italian tax court ruled in favor of the Company’s positions related to the income tax assessments. In April 2015, the taxing authority appealed the ruling. The Company does not expect all of this amount to result in cash payments in the event of an unfavorable resolution, as the Company would be able to utilize available net operating losses. The Company intends to vigorously defend its tax position. The ultimate outcome of this examination is subject to uncertainty, and the Company had a liability for its uncertain tax position in Italy as of July 31, 2015, 2014 and 2013 of $57,000, $326,000 and $437,000, respectively, which includes penalties and interest offset by net operating losses. These uncertain tax positions primarily relate to transfer pricing. See Note 8 to the consolidated financial statements. The Company has reviewed its Mexican operations and concluded that they do not have the same level of immediate capital needs as previously expected. Therefore, the Company no longer intends for previously unremitted foreign earnings associated with its Mexico operations to be permanently reinvested outside the United States. The Company maintains its foreign earnings from the remaining foreign subsidiaries to be permanently reinvested. 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, 2015, 2014, and 2013, respectively (in thousands): 2015 2014 2013 Income taxes at the federal statutory rate $ 6,610 $ 93 $ 5,320 Effect of foreign operations 182 329 (65 ) Change in valuation allowance 648 1,725 — Adjustments to foreign operations 1,148 (916 ) — Effects of foreign currency fluctuations (953 ) — — State income taxes, net of federal income tax effect 639 269 232 Production deduction and tax credits (1,182 ) — — Acquisition related cost 125 — 714 Other (471 ) (246 ) (486 ) Total $ 6,746 $ 1,254 $ 5,715 Uncertain Tax Positions 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, 2014 $ 461 Increases related to prior years positions 619 Decreases related to prior years positions (362 ) Balance at July 31, 2015 $ 718 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. During the year ended July 31, 2014, the Company had accrued $221,000 of interest and penalties related to its unrecognized tax benefits. The amount of interest and penalties recognized in our tax provision for the year ended July 31, 2015 was a decrease of accrued interest and penalties of $163,000.

Intangible Assets

Intangible Assets	12 Months Ended
	Jul. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	6. INTANGIBLE ASSETS Intangible assets are summarized as follows (in thousands): Number of Years Weighted July 31, 2015 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 $ (839 ) $ (87 ) $ 1,278 Electronic chemicals-related trademarks and patents (10-15 years) 12.0 117 (77 ) — 40 Electronic chemicals-value of product qualifications (5-15 years) 14.1 14,100 (3,649 ) 70 10,521 Other chemicals-customer relationships (15 years) 15.0 10,291 (172 ) — 10,119 Other chemicals-other related contracts (5 years) 5.0 152 (8 ) — 144 Total intangible assets subject to amortization 13.8 $ 26,864 $ (4,745 ) $ (17 ) $ 22,102 Intangible assets not subject to amortization: Other chemicals-penta product registrations 8,765 Other chemicals-related trade name and trademark 2,885 Other chemicals-proprietary manufacturing process 2,808 Total intangible assets not subject to amortization 14,458 Total intangible assets, net $ 36,560 Number of Years Weighted July 31, 2014 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 $ (559 ) $ 79 $ 1,724 Electronic chemicals-related trademarks and patents (10-15 years) 12.0 117 (67 ) — 50 Electronic chemicals-value of product qualifications (5-15 years) 14.1 14,100 (2,426 ) 801 12,475 Total intangible assets subject to amortization 13.1 $ 16,421 $ (3,052 ) $ 880 $ 14,249 Intangible assets not subject to amortization: Creosote product registrations 5,339 Penta product registrations 8,765 Total intangible assets not subject to amortization 14,104 Total intangible assets, net $ 28,353 Assets acquired in the acquisition of the industrial valve lubricants and sealants 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 15 and seven years, respectively. Intangible assets subject to amortization are amortized over their estimated useful lives which are between five and 15 years. Total amortization expense related to intangible assets was approximately $1.7 million, $1.8 million and $573,000 for the fiscal years ended July 31, 2015, 2014 and 2013, respectively. The estimated amortization expense is projected to be approximately $2.1 million, $2.1 million, $2.0 million and $2.0 million and $1.8 million for fiscal years 2016 through 2020, respectively. The following table presents carrying value of goodwill by operating segment as of July 31, 2015, 2014 and 2013 (in thousands): Other Chemicals Electronic Chemicals Total Balance as of July 31, 2013 3,779 7,150 10,929 Working capital adjustment from the UPC acquisition — 535 535 Finalization of purchase price allocation — 880 880 Foreign currency translation adjustment — 251 251 Balance as of July 31, 2014 3,779 8,816 12,595 Industrial lubricants business acquisition 11,352 — 11,352 Foreign currency translation adjustment — (877 ) (877 ) Sale of creosote business (662 ) — (662 ) Balance as of July 31, 2015 $ 14,469 $ 7,939 $ 22,408

Long-Term Obligations

Long-Term Obligations	12 Months Ended
	Jul. 31, 2015
Debt Disclosure [Abstract]
Long-Term Obligations	7. LONG-TERM OBLIGATIONS Working Capital On October 9, 2014, the Company refinanced and amended its existing loan facility and entered into a new credit facility as reported on Form 8-K filed on October 10, 2014 (the “Second Restated Credit Facility”). At July 31, 2015 the Company had $53 million outstanding under the Second Restated Credit Facility of $150.0 million. The maximum borrowing capacity under that revolving loan facility was $94.2 million, after giving effect to a reduction of $2.8 million for unused letters of credit. The actual amount available under the revolving facility at July 31, 2015 was limited, however, to approximately $76.8 million, because of a loan covenant restriction respecting funded debt to pro-forma earnings before interest, taxes and depreciation. Long Term Obligations The Company’s long-term debt and current maturities as of July 31, 2015 and 2014 consisted of the following (in thousands): July 31, 2015 July 31, 2014 Senior secured debt: Note purchase agreement, maturing on December 31, 2015, interest rate of 7.43% $ — $ 20,000 Revolving loan facility, maturing on April 30, 2018, variable interest rates based on LIBOR plus 2.0% at July 31, 2014 — 40,000 Revolving loan facility, maturing on October 9, 2019, variable interest rates based on LIBOR plus 1.0% at July 31, 2015 53,000 — Total debt 53,000 60,000 Current maturities of long-term debt — — Long-term debt, net of current maturities $ 53,000 $ 60,000 The Company entered into an amended and restated credit agreement and a note purchase agreement in December 2007, which were subsequently amended. Advances under the revolving loan, as amended, bore interest at 2.155% as of July 31, 2014. The amount outstanding on the revolving loan facility was $40.0 million at July 31, 2014. The note purchase agreement was for $20.0 million. Advances under the note purchase agreement bore interest at 7.43% per annum. On October 9, 2014, the Company refinanced its then existing revolving loan facility and entered into the Second Restated Credit Facility. The Second Restated Credit Facility is now with Wells Fargo Bank, National Association, Bank of America, N.A., HSBC Bank USA, National Association, and JPMorgan Chase Bank, N.A. The initial advance under the Second Restated Credit Facility was used to repay in full the $20.0 million outstanding indebtedness under the Company’s note purchase agreement with The Prudential Insurance Company of America and Pruco Life Insurance Company, and the Company refinanced $38.0 million then outstanding under its existing revolving loan facility. As a result, the note purchase agreement was classified as a long-term obligation as of July 31, 2014. The Second Restated Credit Facility provides for a revolving loan up to $150.0 million, including an accordion feature that allows for an additional revolving loan increase of up to an additional $100.0 million with approval from the lenders. The amount available under the Second Restated Credit Facility at July 31, 2015 was limited, however, by a loan covenant restriction related to the ratio of funded debt to earnings before interest, taxes, depreciation and amortization (“EBITDA”). Taking that restriction into account, at July 31, 2015, the Company could draw approximately an additional $76.8 million on its revolving loan. The maturity date for the Second Restated Credit Facility is October 9, 2019. The revolving loan under the Second Restated Credit Facility bears interest at varying rate of LIBOR plus a margin based on funded debt to EBITDA, as described in the table. Ratio of Funded Debt to EBITDA Margin Equal to or greater than 3.0 to 1.0 1.875 % Equal to or greater than 2.75 to 1.0, but less than 3.0 to 1.0 1.625 % Equal to or greater than 2.50 to 1.0, but less than 2.75 to 1.0 1.500 % Equal to or greater than 2.25 to 1.0, but less than 2.50 to 1.0 1.375 % Equal to or greater than 2.00 to 1.0, but less than 2.25 to 1.0 1.250 % Equal to or greater than 1.50 to 1.0, but less than 2.00 to 1.0 1.125 % Less than 1.50 to 1.0 1.000 % Advances under the revolving loan bore interest at 1.189% as of July 31, 2015. The Company also incurs an unused commitment fee on the unused amount of commitments under the Second Restated Credit Facility from 0.30% to 0.15%, based on the ratio of funded debt to EBITDA. Loans under the Second Restated Credit Facility are secured by the Company’s assets, including stock in subsidiaries, inventory, accounts receivable, equipment, intangible assets, and real property. The Second Restated Credit Facility has restrictive covenants, including requirements that the Company must maintain a fixed charge coverage ratio of 1.5 to 1.0, a ratio of funded debt to EBITDA (as adjusted for non-cash and unusual, non-recurring, and certain acquisition and integration costs) of 3.25 to 1.0 (with a step-up to 3.5 to 1.0 during an acquisition period with lender consent) and a current ratio of at least 1.5 to 1.0. As of July 31, 2015, the Company was in compliance with all covenants of the Second Restated Credit Facility. After considering the Second Restated Credit Facility, principal payments due under long-term debt agreements as of July 31, 2015 for the fiscal years ended July 31 are as follows (in thousands): Total 2016 2017 2018 2019 2020 Thereafter Long-term debt $ 53,000 $ — $ — $ — $ — $ 53,000 $ —

Commitments And Contingencies

Commitments And Contingencies	12 Months Ended
	Jul. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Commitments And Contingencies	8. 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, 2015 are summarized in the following table (in thousands): Total 2016 2017 2018 2019 2020 Thereafter Operating leases $ 10,811 $ 2,772 $ 1,722 $ 849 $ 693 $ 537 $ 4,238 Purchase obligations (1) 78,296 45,790 28,419 4,087 — — — Total $ 89,107 $ 48,562 $ 30,141 $ 4,936 $ 693 $ 537 $ 4,238 (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 $3.4 million, $3.8 million and $2.7 million in fiscal years 2015, 2014 and 2013, 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, and it believes that it is in substantial compliance with all of the applicable laws and regulations. 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 chemicals such as penta and creosote 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 those products 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 $ 977,000, $667,000, and $522,000, in fiscal years 2015, 2014 and 2013, 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 Company’s subsidiary in Italy is contesting two cases in the Provincial Tax Court in Milan, Italy. In the first case the Company disputes income tax assessments by the taxing authority for the three year period ended July 31, 2011. In the aggregate, the amount of the assessments, including interest and penalties, is €1.8 million. If all the adjustments are sustained, the additional liability for the years 2009 through 2011 would total approximately $2.0 million, including interest and penalties through July 31, 2015 (at an exchange rate of 1.103 $/€). The Company had a liability for an uncertain tax position for items in the amount of $57,000, $326,000 and $437,000 as of July 31, 2015, 2014 and 2013, respectively. In the second case, the Company’s subsidiary is contesting the assessment of additional registration tax. The taxing authority is asserting an increased valuation of assets purchased from Air Products and Chemicals, Inc. in December 2007 on which registration tax is payable. The amount of this assessment, including interest and penalties through July 31, 2015, is €802,000 (or approximately $885,000, at an exchange rate of 1.103 $/€). The Provincial Tax Court issued a ruling in October 2014 agreeing with the Company’s position in the income tax assessment case. In April 2015, the taxing authority appealed that ruling. The hearing date has not been set. The Company intends to vigorously pursue its position before the court in both cases, but the ultimate outcome of this litigation is subject to uncertainty. The EPA has listed the Star Lake Canal Superfund Site near Beaumont, Texas on the National Priorities List. In December 2002, the Company received a letter from the EPA addressed to Idacon, Inc. (f/k/a Sonford Chemical Company) notifying Idacon of potential liability under CERCLA in connection with this site. The letter requested reimbursement from Idacon for costs incurred by the EPA in responding to releases at the sites, equal to approximately $500,000 as of July 31, 2002. Idacon sold substantially all of its assets to one of our subsidiaries in 1988. The Company responded to a request for information from the EPA on the corporate history and relationship between the Company and its subsidiaries and Sonford Chemical Company in April 2003. On December 22, 2005, the EPA and certain potentially responsible parties entered an administrative order on consent which required the implementation of a remedial investigation and feasibility study. We understand that these studies were completed by mid-2012. EPA prepared a Record of Decision, selecting a remedy of excavation and disposal or soil and/or sediment, containment with soil, clay and/or armor caps and monitored natural recovery. The EPA has estimated that the remediation will cost approximately $22.0 million. In October 2014, the Company’s subsidiary, KMG-Bernuth, received a letter from EPA notifying it of potential liability under CERCLA, and inviting it to enter into negotiations to pay for or perform the selected remedy. The Company is engaged in discussions with EPA and approximately seven other parties to assess their respective potential liability. No assurance can be given that the EPA will not designate the Company’s subsidiary as a potentially responsible party. The Company established a liability of $1.3 million in the third quarter of fiscal year 2015 in connection with this matter. 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, 2015
Postemployment Benefits [Abstract]
Employee Benefit Plans	9. 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 $573,000, $608,000 and $457,000 in fiscal years 2015, 2014, and 2013, respectively. The locations in the United Kingdom and Singapore, acquired as part of the UPC acquisition from OM Group, make contributions to retirement plans that function as defined contribution retirement plans. The Company’s contributions to those plans were approximately $1.3 million and $1.5 million in fiscal years 2015 and 2014, respectively. The Company’s contributions to those plans were not significant in fiscal year 2013. The Company’s other long-term liabilities included approximately $1.2 million and $1.1 million as of July 31, 2015 and 2014, 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, 2015 and 2014, the associated liability was approximately $490,000 and $553,000, 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, 2015
Earnings Per Share [Abstract]
Earnings Per Share	10. 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 2015 2014 2013 (Amounts in thousands, except per share data) Income/(loss) from continuing operations $ 12,138 $ (988 ) $ 9,486 Income/(loss) from discontinued operations — — (138 ) Net income (loss) $ 12,138 $ (988 ) $ 9,348 Weighted average shares outstanding — basic 11,673 11,615 11,487 Dilutive effect of options/warrants and stock awards 106 — 91 Weighted average shares outstanding — diluted 11,779 11,615 11,578 Basic earnings/(loss) per share Basic earnings/(loss) per share from continuing operations $ 1.04 $ (0.09 ) $ 0.82 Basic earnings per share on income/(loss) from discontinued operations — — (0.01 ) Basic earnings/(loss) per share $ 1.04 $ (0.09 ) $ 0.81 Diluted earnings per share Diluted earnings/(loss) per share from continuing operations $ 1.03 $ (0.09 ) $ 0.82 Diluted earnings per share on income/(loss) from discontinued operations — — (0.01 ) Diluted earnings/(loss) per share $ 1.03 $ (0.09 ) $ 0.81 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 136 shares, 21,033 shares and 6,222 shares for the fiscal years ended 2015, 2014 and 2013, respectively, not included in the computation of diluted earnings per share. Potentially dilutive shares are not included in the computation of diluted weighted average shares outstanding for the fiscal year ended July 31, 2014 due to a loss from continuing operations for the year.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Jul. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	11. STOCK-BASED COMPENSATION Stock-Based Incentive Plans The Company adopted a 2009 Long-Term Incentive Plan (“LTI Plan”) in October 2009, and it was approved by the shareholders at the annual meeting in December 2009. The Company adopted a 2004 Long-Term Incentive Plan (“2004 LTI Plan”) in October 2004, and it was approved by the shareholders at the annual meeting in November 2005, which expired and terminated on October 14, 2014. The Company adopted the 1996 Stock Option Plan (the “1996 Stock Plan”) in October, 1996, which expired and terminated on July 31, 2007. There are no options outstanding under the 1996 Stock Plan or the 2004 LTI Plan as of July 31, 2015. The LTI Plan permits 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 Plan. Subject to the terms of the LTI Plan, 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 Plan, 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 750,000 shares under the LTI Plan. Under the 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. At July 31, 2015 there were approximately 124,575 shares available for future grants under the LTI Plan. Accounting for Stock-Based Compensation The Company recognized stock-based compensation costs of approximately $2.8 million, $2.2 million and $446,000, respectively, for the fiscal years ended July 31, 2015, 2014 and 2013, and the related tax benefits of $887,000, $825,000 and $168,000, respectively, for the fiscal years ended July 31, 2015, 2014 and 2013. 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, 2015, there was approximately $4.2 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 option and stock-awards is presented below. Stock Options There were no stock options granted in fiscal years 2015, 2014 and 2013 and no stock options outstanding at July 31, 2015 and 2014. There were no options exercised in fiscal year 2015. The total intrinsic value of options exercised in fiscal years 2014 and 2013 was approximately $952,000 and $1.6 million, respectively. The total fair value of shares vested was $0, and $39,000 for the fiscal years ended July 31, 2014 and 2013, respectively. 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 on a straight-line basis 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, 2014 there were non-vested performance share awards outstanding for 185,915 shares, which reflected the target number of shares under the awards. During fiscal year 2015 there were Series 1 awards granted for 124,672 shares and awards for 12,147 shares were forfeited. These shares represented the target award subject to certain performance measures. No Series 1 awards for shares vested during fiscal year 2015. Total performance share awards for 53,650 shares granted in fiscal year 2013 did not vest at July 31, 2015, the end of the measurement period for such awards. At July 31, 2015, there were non-vested performance share awards outstanding for 244,790 shares reflecting the target number of shares issuable under outstanding awards for fiscal years 2014 and 2015. The fair value of the key personnel fiscal year 2015 award granted on March 26, 2015 was measured using the Company’s closing stock price on the grant date of $25.85. The fair value of the executive fiscal year 2015 award granted on December 9, 2014 was measured using the Company’s closing stock price on the grant date of $17.81. Stock-based compensation on the awards is recognized on a straight-line basis over the requisite service period beginning on the date of grant through the end of the measurement period ending on July 31, 2017, based on the number of shares expected to vest under the award at the end of the measurement period. A summary of the performance-based stock awards granted to certain employees and executives as Series 1 awards in fiscal years 2015, 2014 and 2013 is detailed below. 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 2015 Award 03/26/2015 Series 1 21,173 $ 25.85 07/31/2017 12/09/2014 Series 1 103,499 $ 17.81 07/31/2017 Forfeitures (2) (562 ) Total 124,110 135 % 168,042 Fiscal Year 2014 Award 02/25/2014 Series 1 127,315 $ 14.88 07/31/2016 Forfeitures (2) (6,635 ) Total 120,680 100 % 120,680 Fiscal Year 2013 Award 12/4/2012 Series 1 141,059 $ 18.75 07/31/2015 Forfeitures (2) (87,409 ) Total 53,650 0 % — (1) The percentage vesting for performance share awards is currently estimated at 135%, 100% and 0% of the target awards for the fiscal year 2015, 2014 and 2013 awards, respectively. (2) Forfeitures include Series 1 awards that were granted in fiscal years 2015, 2014 and 2013 to certain employees that were forfeited at the termination of their employment. Series 1: For the fiscal year 2015, 2014 and 2013 awards, vesting is subject to performance requirements composed of certain objectives including average annual return on invested capital and annual compound growth rate in the Company’s 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, 2015, and reflects the percentage of shares projected to vest for the respective awards at the end of their measurement periods. For the fiscal year 2015 and 2014 awards, shares vested under the awards may increase to a maximum of 167% and 150%, respectively, of the target award on achievement of maximum performance objectives. For the fiscal year 2013 awards, the target award is equal to the maximum award. Series 2: None outstanding. Series 3: The table does not include certain performance-based awards to be granted to Christopher T. Fraser according to his employment agreement as of September 24, 2013. Awards to Mr. Fraser for fiscal year 2015 included (i) a performance-based Series 3 award for 10,000 shares of common stock (at maximum) having a performance requirement related to debt payments during fiscal year 2015, and (ii) a performance-based Series 3 award for 4,000 shares of common stock having certain organizational objectives as a performance requirement, and in each case such awards vest and are measured over a one year period beginning August 1, 2014 and ending July 31, 2015. As of July 31, 2015, the Series 3 awards to Mr. Fraser have fully vested. The weighted-average grant-date fair value of performance share awards forfeited during the fiscal year 2015 was $15.74. The weighted-average grant-date fair value of performance share awards outstanding at August 1, 2014 and July 31, 2015 was $14.88 and $17.36, respectively. The total fair value of performance share awards vested during fiscal years 2015, 2014 and 2013 was approximately $233,000, $45,000, and $118,000, respectively. Time-Based Shares A summary of activity for time-based stock awards for the fiscal year ended July 31, 2015 is presented below: Shares Weighted-Average Grant-Date Fair Value Non-vested on August 1, 2014 50,100 $ 19.19 Granted (1) 68,774 20.00 Vested (2) (36,186 ) 19.65 Forfeited — — Non-vested on July 31, 2015 82,688 19.66 (1) Includes 19,386 share awards granted to non-employee directors during fiscal year 2015. The director awards were granted for a three month service period. The director awards were granted at the end of each quarter and vested once the service period was complete. Includes 8,000 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 41,388 share awards granted to certain employees and executives during fiscal year 2015 which are expected to vest on July 31, 2017. The Company recognizes compensation expense related to the awards over the respective service period. (2) Includes 19,386 share awards granted to non-employee directors indicated above and 16,800 share awards granted to employees. The total fair value of share awards vested during the fiscal years ended 2015, 2014 and 2013 was approximately $944,000, $1,822,000, and $542,000, respectively.

Discontinued Operations

Discontinued Operations	12 Months Ended
	Jul. 31, 2015
Discontinued Operations And Disposal Groups [Abstract]
Discontinued Operations	12. DISCONTINUED OPERATIONS Discontinued operations reflected a loss before income taxes of $203,000 for fiscal year 2013. On March 1, 2012, the Company sold the business that had comprised the animal health segment to Bayer Healthcare LLC. For the fiscal year ended July 31, 2013, $82,000 was reported as a loss from discontinued operations before income taxes. In fiscal year 2013 the loss included $57,000 for a post-closing inventory adjustment that was recognized as loss on sale of the business in the first fiscal quarter. In the sale of the animal health business, $1.0 million of the price is restricted cash held in escrow. The escrowed amount is to be held pending the final acceptance by the EPA of certain studies being performed at the request of the EPA on tetrachlorvinphos, the active ingredient used in Rabon products. The escrowed funds are to be released to the Company once the EPA has finally accepted the studies, the buyer has voluntarily canceled the products, or after five years. The escrowed funds are to be released to the buyer if the EPA cancels the products to which the studies pertain before the funds are distributed to the Company. Animal health net sales and income before income tax reported in discontinued operations were as follows for the fiscal year ended July 31. There were no such amounts for fiscal year 2015 or 2014: 2013 (Amounts in thousands) Revenue $ 57 Income (loss) before income taxes (25 )

Segment Information

Segment Information	12 Months Ended
	Jul. 31, 2015
Segment Reporting [Abstract]
Segment Information	13. SEGMENT INFORMATION The Company has two reportable segments—electronic chemicals and other chemicals. In conjunction with the acquisition of the industrial valve lubricants and sealants business, 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 and other chemicals business segments. Previously the Company had two reportable segments – electronic chemicals and wood treating chemicals. The electronic chemicals segment includes the ultra pure chemicals business acquired from OM Group on May 31, 2013 and represents the substantial majority of the Company’s on-going operations. During the second quarter ended January 31, 2015, the Company sold the creosote business which, along with the Company’s penta business, comprised the previous wood treating chemicals segment. The remaining piece of the wood treating chemicals segment was combined with the recently acquired industrial lubricants business and are presented as the other chemicals segment. Therefore, as of May 1, 2015 our other chemicals segment includes the Company’s penta business and the recently acquired industrial valve lubricants and sealants business. 2015 2014 2013 (Amounts in thousands) Sales Electronic chemicals $ 265,608 $ 253,754 $ 165,755 Other chemicals 54,820 99,514 97,185 Total sales for reportable segments $ 320,428 $ 353,268 $ 262,940 Depreciation and amortization (1) Electronic chemicals $ 12,257 $ 13,240 $ 7,416 Other chemicals 626 400 418 Other — general corporate 648 477 461 Total consolidated depreciation and amortization $ 13,531 $ 14,117 $ 8,295 Segment income from operations (2) Electronic chemicals $ 21,787 $ 14,089 $ 13,992 Other chemicals 8,735 8,390 10,522 Total segment income from operations $ 30,522 $ 22,479 $ 24,514 (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. For fiscal years 2015, 2014 and 2013 sales to one customer represented approximately 23%, 15% and 20%, respectively, of the Company’s net sales. In fiscal years 2014 and 2013, sales to another customer represented approximately 13% and 16% of the Company’s net sales. No other customers accounted for 10% or more of the Company’s net sales. Corporate overhead expenses allocated to segment income for the fiscal years ended July 31, 2015, 2014 and 2013 were as follows: 2015 2014 2013 (Amounts in thousands) Electronic chemicals $ 10,780 $ 8,751 $ 5,218 Other chemicals 4,071 4,458 4,461 Total corporate overhead expense allocation $ 14,851 $ 13,209 $ 9,679 A reconciliation of total segment to consolidated amounts as of July 31, 2015 and 2014, and for fiscal years 2015, 2014 and 2013 is set forth in the table below. 2015 2014 2013 (Amounts in thousands) Assets: Total assets for reportable segments $ 228,233 $ 233,580 $ 244,015 Total assets for discontinued operations (1) — — 467 Other current assets 8,440 7,690 9,120 Other assets 5,686 9,588 8,413 Total assets $ 242,359 $ 250,858 $ 262,015 Sales: Total sales for reportable segments $ 320,428 $ 353,268 $ 262,940 Other (2) 70 138 371 Net sales $ 320,498 $ 353,406 $ 263,311 Segment income from operations: Total segment income from operations (3) $ 30,522 $ 22,479 $ 24,514 Other corporate expense (3) (7,029 ) (7,652 ) (7,334 ) Restructuring and realignment charges (6,904 ) (10,876 ) - Operating income 16,589 3,951 17,180 Interest expense, net (1,407 ) (2,854 ) (1,771 ) Other income/(expense), net 3,702 (831 ) (208 ) Income from continuing operations before income taxes $ 18,884 $ 266 $ 15,201 Geographic Data: 2015 2014 2013 (Amounts in thousands) Net sales: United States $ 183,384 $ 212,903 $ 200,184 International 137,114 140,503 63,127 Net sales $ 320,498 $ 353,406 $ 263,311 Property, plant and equipment, net: United States $ 45,257 $ 49,776 International 35,332 42,674 Property, plant and equipment, net $ 80,589 $ 92,450 (1) Reflects deferred tax assets as of July 31, 2013. (2) Primarily reflects income in connection with the sale of the animal health business. See Note 12. (3) Other corporate expense primarily represents employee stock-based compensation expenses and those expenses associated with the Company’s operation as a public entity such as board compensation, audit expense, fees related to the listing of our stock and expenses incurred to pursue acquisition opportunities.

Restructuring and Realignment E

Restructuring and Realignment Events	12 Months Ended
	Jul. 31, 2015
Restructuring And Related Activities [Abstract]
Restructuring and Realignment Events	14. RESTRUCTURING AND REALIGNMENT EVENTS In October 2013, the Company announced that as part of global restructuring of its electronic chemicals operations, the Fremont, California manufacturing site acquired in the acquisition from OM Group will be closed, and production shifted primarily to the Company’s Hollister, California and Pueblo, Colorado facilities. The Company ceased production at the Fremont facility and completed site decommissioning prior to the end of fiscal year 2014. In November 2013, the Company also announced that it will close a facility in Milan, Italy, and shift production to facilities in France and the United Kingdom. Restructuring charges, exclusive of accelerated depreciation, have been $4.3 million in the aggregate in fiscal years 2015 and 2014, and accelerated depreciation with respect to the closed facilities was approximately $3.3 million over those two fiscal years. At July 31, 2015, 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, 2013 $ — $ — $ — $ — Charges 2,631 1,260 34 3,925 Payments (698 ) (438 ) 0 (1,136 ) Adjustment (45 ) (12 ) (7 ) (64 ) Accrued liability at July 31, 2014 $ 1,888 $ 810 $ 27 $ 2,725 Charges — 90 11 101 Payments (882 ) (654 ) (12 ) (1,548 ) Adjustment (290 ) (77 ) (9 ) (376 ) Accrued liability at July 31, 2015 $ 716 $ 169 $ 17 $ 902 Total accelerated depreciation for the fiscal years ended July 31, 2015 and 2014 was $900,000 and $2.4 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. Operations ceased in the third quarter of fiscal year 2015. The Company incurred total charges of $4.8 million for accelerated depreciation during fiscal year 2015. Additionally, the Company incurred certain employee costs of $0.8 million. All assets have been fully depreciated as of July 31, 2015. The changes to the asset retirement obligation associated with realignment are as follows: Asset retirement obligation at July 31, 2014 $ 3,870 Charges 671 Payments (3,721 ) Adjustment (9 ) Asset retirement obligation at July 31, 2015 $ 811 In fiscal year 2014, the Company established an asset retirement obligation of $3.7 million for decontamination, decommissioning and dismantling at Bay Point, and recorded $1.0 million depreciation expense against that obligation, and the Company recognized $0.8 million of additional accelerated depreciation. In addition, the Company recognized an impairment charge of $2.7 million in fiscal year 2014 with respect to certain manufacturing equipment at Bay Point that is unrelated to hydrofluoric acid production.

Selected Quarterly Financial Da

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Jul. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (Unaudited)	15. SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) Quarterly results for the fiscal years ended July 31, 2015 and 2014 exclude the effect of discontinued operations, except for net income amounts. See note 12 for further detail on discontinued operations. First Quarter Second Quarter Third Quarter Fourth Quarter (Amounts in thousands, except per share data) Year Ended July 31, 2015 Net sales $ 90,779 $ 79,762 $ 73,964 $ 75,993 Gross profit 27,591 28,555 26,815 26,516 Operating income 2,819 3,167 4,761 5,842 Income before income taxes 1,988 8,534 2,827 5,535 Net income 1,185 5,490 2,135 3,328 Earnings per share: Net income per share - basic $ 0.10 $ 0.47 $ 0.18 $ 0.29 - diluted 0.10 0.47 0.18 0.28 Year Ended July 31, 2014 Net sales $ 93,560 $ 84,253 $ 84,437 $ 91,156 Gross profit 25,567 25,190 24,765 27,977 Operating income/(loss) 3,055 (1,603 ) 2,914 (415 ) Income/(loss) before income taxes 2,077 (2,384 ) 1,883 (1,310 ) Net income /(loss) 1,352 (2,744 ) 1,226 (822 ) Earnings/(loss) per share: Income/(loss) per share - basic $ 0.12 $ (0.24 ) $ 0.11 $ (0.07 ) - diluted 0.12 (0.24 ) 0.11 (0.07 ) 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, 2015
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, 2015, 2014 and 2013 (in thousands) Description Balance at beginning of period Charged to costs and expenses Additions/ Deductions Balance at end of period 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 Year ended July 31, 2014: Allowance for doubtful accounts $ 224 $ 108 $ (60 ) $ 272 Inventory obsolescence 180 221 (111 ) 290 Valuation allowance on deferred tax assets — 1,725 — 1,725 Year ended July 31, 2013: Allowance for doubtful accounts $ 16 $ 208 $ — $ 224 Inventory obsolescence 493 107 (420 ) 180 Valuation allowance on deferred tax assets — — — —

Summary of Significant Accoun25

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Jul. 31, 2015
Accounting Policies [Abstract]
General	General — KMG Chemicals, Inc. (the “Company”) is involved principally in the manufacture, formulation and distribution of specialty chemicals in carefully focused markets through its three wholly-owned subsidiaries, KMG Electronic Chemicals, Inc. (“KMG EC”), KMG-Bernuth, Inc. (“KMG Bernuth”) and KMG Val-Tex, LLC (“Val-Tex”). In its electronic chemicals business, the Company sells high purity wet process chemicals to the semiconductor industry. In the wood treating chemicals business, the Company sells industrial wood treating chemicals based on pentachlorophenol (“penta”). In its industrial valve lubricants and sealants business, the Company sells industrial lubricants and sealants, primarily to the oil and gas storage, pipeline and gas distribution markets, as well as related products, such as lubrication equipment and fittings. The Company operates its electronic chemicals business through KMG EC in North America and through KMG Italia, S.r.l. (“KMG Italia”) and KMG Electronic Chemicals Holdings S.a.r.l (“KMG Lux”) (and its subsidiaries) in Europe and Asia. That business has facilities in the United States, the United Kingdom, France, Italy and Singapore. In the wood treating business the Company manufactures penta at its plant in Matamoros, Mexico through KMG de Mexico (“KMEX”), a Mexican corporation which is a wholly-owned subsidiary of KMG Bernuth. The Company sells its wood treating chemicals in the United States, Mexico and Canada. The Company operates its industrial valve lubricants and sealants business through Val-Tex, a Texas limited liability company. That business has one facility in the United States. The Company has two reportable segments, electronic chemicals and other chemicals. The other chemicals segment includes the Company’s wood treating chemicals business and its industrial valve lubricants and sealants business. See Note 13.
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.
Reclassifications	Reclassifications — Certain reclassifications of prior year amounts have been made to conform to current year presentation. These reclassifications had no impact on net income (loss) or total stockholders’ equity as previously reported.
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 cash 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, 201 5 and 2014 includes proceeds that were placed in escrow in connection with the sale of the animal health business. See Note 12.
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 short maturity of these instruments. The fair value of the Company’s debt at July 31, 2015 and 2014 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 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. At July 31, 2015 there was one customer that represented approximately 9.1% of the Company’s accounts receivable. At July 31, 2014 there was one customer that represented approximately 15% of the Company’s accounts receivable. 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 $144,000 and $272,000 at July 31, 2015 and 2014, respectively.
Inventories	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 — 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 $17.5 million and $16.5 million (including accelerated depreciation of $5.6 million and $4.2 million) in fiscal years 2015 and 2014, respectively. See Notes 4 and 14.
Intangible Assets	Intangible Assets — Identifiable intangible assets with a defined life are amortized using a straight-line or accelerated 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, 201 5 and 2014. The Company therefore concluded that its indefinite lived intangible assets were not impaired as of July 31, 2015 and 2014. 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 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 $14.5 million and $7.9 million associated with its other chemicals and electronic chemicals segments, respectively, as of July 31, 2015. As part of the goodwill impairment analysis, current accounting standards give us 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 of each year. In 2015, 2014 and 2013, the Company’s goodwill impairment tests indicated that 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 wrote off goodwill in the amount of approximately $662,000 that was previously a part of the wood treating chemicals reporting unit.
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 f rom 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, and intangible assets with defined lives, 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. The Company recognized an impairment loss in fiscal year 2014 of $2.7 million on certain long-lived assets at the Bay Point, California facility where Chemtrade toll manufactures for the Company.
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. In general, risk of loss transfers upon shipment to customers. 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.
Cost of Sales	Cost of Sales — Cost of sales includes inbound freight charges, purchasing and receiving costs, depreciation, inspection costs and internal transfer costs. In the case of products manufactured by the Company, direct and indirect manufacturing costs 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 expenses 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’ expenses, 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 Company’s customers are included in distribution expenses.
Income Taxes	Income Taxes — The Company follows the liability method of accounting for income taxes in accordance with current accounting standards regarding the accounting for income taxes. 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 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 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 5.
Earnings Per Share	Earnings Per Share — Basic earnings per common share amounts are calculated using the 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	Foreign Currency Translation — The functional currency of the Company’s Mexico operations is the U.S. Dollar. As a result, monetary assets and liabilities for KMEX are re-measured to U.S. dollars at current rates at the balance sheet dates, income statement items are re-measured at the average monthly exchange rates for the dates those items were recognized, and certain assets (including plant and production equipment) are re-measured at historical exchange rates. Foreign currency transaction gains and losses are included in the statement of operations as incurred along with gains and losses from currency re-measurement. These gains and losses were nominal in fiscal years 201 5, 2014 and 2013. The Company’s international operations in the electronic chemicals business are in Europe and Singapore, and use local currencies as the functional currency, including the GB Pound, Euro and Singapore 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 $(10.2) million, $3.1 million and $1.8 million in fiscal years 2015, 2014 and 2013, 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 April 2014, the Financial Accounting Standards Board (FASB) Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers,” which provides guidance for revenue recognition. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The new guidance is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is currently assessing the potential impact of ASU No. 2014-09 on its financial statements.

Summary of Significant Accoun26

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Jul. 31, 2015
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, 2015
Unaudited Pro Forma Financial Information	The following table sets forth pro forma results for the fiscal year ended July 31, 2013 had the UPC acquisition occurred as of the beginning of fiscal year 2013. The unaudited pro forma financial information is not necessarily indicative of what our consolidated results of operations would have been had we completed the UPC acquisition as of the dates indicated. (Unaudited) (in thousands, except per share data) 2013 Revenues $ 340,427 Operating income 15,955 Net income 9,123 Earnings per share — basic $ 0.79
Valves Incorporated of Texas
Summary of Acquired Assets and Assumed Liabilities and Preliminary Acquisition Accounting for Fair Value of Assets Recognized	The following table summarizes preliminary acquired assets and liability 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 (6,178 ) Net assets acquired 12,355 Goodwill 11,352 Total purchase consideration $ 23,707
Ultra Pure Chemicals
Summary of Acquired Assets and Assumed Liabilities and Preliminary Acquisition Accounting for Fair Value of Assets Recognized	The following table summarizes final 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 the UPC acquisition date (in thousands): Cash $ 689 Accounts receivable 14,698 Inventory 11,047 Other current assets 1,963 Property, plant and equipment 28,939 Intangible assets: Value of product qualifications 12,800 Non-compete agreement 1,900 Transition services 154 Total intangible assets 14,854 Total assets acquired $ 72,190 Current liabilities 11,401 Other long-term liabilities 6,206 Total liabilities assumed 17,607 Net assets acquired $ 54,583

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Jul. 31, 2015
Inventory Disclosure [Abstract]
Inventories	Inventories are summarized as follows at July 31, 2015 and 2014 (in thousands): 2015 2014 Raw materials and supplies $ 8,723 $ 7,914 Work in process 780 1,508 Supplies 525 1,793 Finished products 32,535 34,343 Less reserve for inventory obsolescence (481 ) (290 ) Inventories, net $ 42,082 $ 45,268

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Jul. 31, 2015
Property Plant And Equipment [Abstract]
Property, Plant, and Equipment and Related Accumulated Depreciation and Amortization	2015 2014 Land $ 13,257 $ 15,763 Buildings and improvements 38,036 42,664 Equipment 84,273 77,557 Leasehold improvements 193 143 135,759 136,127 Less accumulated depreciation and amortization (61,936 ) (52,972 ) 73,823 83,155 Construction-in-progress 6,766 9,295 Property, plant and equipment, net $ 80,589 $ 92,450

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Jul. 31, 2015
Income Tax Disclosure [Abstract]
Geographical Sources of Income from Continuing Operations Before Income Taxes	The Company is subject to United States federal, state and foreign taxes on its operations. The geographical sources of income from continuing operations before income taxes for each of the three years ended July 31 are as follows (in thousands): 2015 2014 2013 United States $ 20,442 $ 1,923 $ 12,033 Foreign (1,558 ) (1,657 ) 3,168 Income from continuing operations before income taxes $ 18,884 $ 266 $ 15,201
Components of Income Tax Expense (Benefit) from Continuing Operations	The components of income tax expense/(benefit) from continuing operations for the years ended July 31 consisted of the following (in thousands): 2015 2014 2013 Current: Federal $ 9,176 $ 2,582 $ 2,833 Foreign (127 ) 1,071 1,437 State 1,214 603 197 10,263 4,256 4,467 Deferred: Federal (3,660 ) (1,978 ) 1,426 Foreign 293 (897 ) (282 ) State (150 ) (127 ) 104 (3,517 ) (3,002 ) 1,248 Total $ 6,746 $ 1,254 $ 5,715
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, 2015 and 2014 (in thousands): 2015 2014 Deferred tax assets: Current deferred tax assets: Bad debt expense $ 238 $ 326 Inventory 675 787 Accrued liabilities 227 1,545 Employee benefits 2,025 1,879 Other 972 102 Less valuation allowance (34 ) (636 ) Total current deferred tax assets $ 4,103 $ 4,003 Non-current deferred tax assets Net operating loss $ 1,629 $ 839 Deferred compensation 1,490 616 Other 295 — Less valuation allowance (1,982 ) (1,090 ) Total non-current deferred tax assets $ 1,432 $ 365 Deferred tax liabilities: Current deferred tax liabilities: Other $ — $ (128 ) Prepaid assets (341 ) (398 ) Total current deferred tax liabilities: $ (341 ) $ (526 ) Non-current deferred tax liabilities: Difference in amortization basis of intangibles $ (11,131 ) $ (7,129 ) Difference in depreciable basis of property (4,182 ) (4,575 ) Total non-current deferred tax liabilities (15,313 ) (11,704 ) Net non-current deferred tax liability $ (10,119 ) $ (7,862 )
Difference Between Actual Tax Provision	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, 2015, 2014, and 2013, respectively (in thousands): 2015 2014 2013 Income taxes at the federal statutory rate $ 6,610 $ 93 $ 5,320 Effect of foreign operations 182 329 (65 ) Change in valuation allowance 648 1,725 — Adjustments to foreign operations 1,148 (916 ) — Effects of foreign currency fluctuations (953 ) — — State income taxes, net of federal income tax effect 639 269 232 Production deduction and tax credits (1,182 ) — — Acquisition related cost 125 — 714 Other (471 ) (246 ) (486 ) Total $ 6,746 $ 1,254 $ 5,715
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, 2014 $ 461 Increases related to prior years positions 619 Decreases related to prior years positions (362 ) Balance at July 31, 2015 $ 718

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Jul. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible assets are summarized as follows (in thousands): Number of Years Weighted July 31, 2015 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 $ (839 ) $ (87 ) $ 1,278 Electronic chemicals-related trademarks and patents (10-15 years) 12.0 117 (77 ) — 40 Electronic chemicals-value of product qualifications (5-15 years) 14.1 14,100 (3,649 ) 70 10,521 Other chemicals-customer relationships (15 years) 15.0 10,291 (172 ) — 10,119 Other chemicals-other related contracts (5 years) 5.0 152 (8 ) — 144 Total intangible assets subject to amortization 13.8 $ 26,864 $ (4,745 ) $ (17 ) $ 22,102 Intangible assets not subject to amortization: Other chemicals-penta product registrations 8,765 Other chemicals-related trade name and trademark 2,885 Other chemicals-proprietary manufacturing process 2,808 Total intangible assets not subject to amortization 14,458 Total intangible assets, net $ 36,560 Number of Years Weighted July 31, 2014 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 $ (559 ) $ 79 $ 1,724 Electronic chemicals-related trademarks and patents (10-15 years) 12.0 117 (67 ) — 50 Electronic chemicals-value of product qualifications (5-15 years) 14.1 14,100 (2,426 ) 801 12,475 Total intangible assets subject to amortization 13.1 $ 16,421 $ (3,052 ) $ 880 $ 14,249 Intangible assets not subject to amortization: Creosote product registrations 5,339 Penta product registrations 8,765 Total intangible assets not subject to amortization 14,104 Total intangible assets, net $ 28,353
Schedule of Goodwill	The following table presents carrying value of goodwill by operating segment as of July 31, 2015, 2014 and 2013 (in thousands): Other Chemicals Electronic Chemicals Total Balance as of July 31, 2013 3,779 7,150 10,929 Working capital adjustment from the UPC acquisition — 535 535 Finalization of purchase price allocation — 880 880 Foreign currency translation adjustment — 251 251 Balance as of July 31, 2014 3,779 8,816 12,595 Industrial lubricants business acquisition 11,352 — 11,352 Foreign currency translation adjustment — (877 ) (877 ) Sale of creosote business (662 ) — (662 ) Balance as of July 31, 2015 $ 14,469 $ 7,939 $ 22,408

Long-Term Obligations (Tables)

Long-Term Obligations (Tables)	12 Months Ended
	Jul. 31, 2015
Debt Disclosure [Abstract]
Long-Term Debt and Current Maturities	The Company’s long-term debt and current maturities as of July 31, 2015 and 2014 consisted of the following (in thousands): July 31, 2015 July 31, 2014 Senior secured debt: Note purchase agreement, maturing on December 31, 2015, interest rate of 7.43% $ — $ 20,000 Revolving loan facility, maturing on April 30, 2018, variable interest rates based on LIBOR plus 2.0% at July 31, 2014 — 40,000 Revolving loan facility, maturing on October 9, 2019, variable interest rates based on LIBOR plus 1.0% at July 31, 2015 53,000 — Total debt 53,000 60,000 Current maturities of long-term debt — — Long-term debt, net of current maturities $ 53,000 $ 60,000
Ratio of Funded Debt to EBITDA	The revolving loan under the Second Restated Credit Facility bears interest at varying rate of LIBOR plus a margin based on funded debt to EBITDA, as described in the table. Ratio of Funded Debt to EBITDA Margin Equal to or greater than 3.0 to 1.0 1.875 % Equal to or greater than 2.75 to 1.0, but less than 3.0 to 1.0 1.625 % Equal to or greater than 2.50 to 1.0, but less than 2.75 to 1.0 1.500 % Equal to or greater than 2.25 to 1.0, but less than 2.50 to 1.0 1.375 % Equal to or greater than 2.00 to 1.0, but less than 2.25 to 1.0 1.250 % Equal to or greater than 1.50 to 1.0, but less than 2.00 to 1.0 1.125 % Less than 1.50 to 1.0 1.000 %
Principal Payments Due Under Long-term Debt Agreements	After considering the Second Restated Credit Facility, principal payments due under long-term debt agreements as of July 31, 2015 for the fiscal years ended July 31 are as follows (in thousands): Total 2016 2017 2018 2019 2020 Thereafter Long-term debt $ 53,000 $ — $ — $ — $ — $ 53,000 $ —

Commitments And Contingencies (

Commitments And Contingencies (Tables)	12 Months Ended
	Jul. 31, 2015
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, 2015 are summarized in the following table (in thousands): Total 2016 2017 2018 2019 2020 Thereafter Operating leases $ 10,811 $ 2,772 $ 1,722 $ 849 $ 693 $ 537 $ 4,238 Purchase obligations (1) 78,296 45,790 28,419 4,087 — — — Total $ 89,107 $ 48,562 $ 30,141 $ 4,936 $ 693 $ 537 $ 4,238 (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, 2015
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 2015 2014 2013 (Amounts in thousands, except per share data) Income/(loss) from continuing operations $ 12,138 $ (988 ) $ 9,486 Income/(loss) from discontinued operations — — (138 ) Net income (loss) $ 12,138 $ (988 ) $ 9,348 Weighted average shares outstanding — basic 11,673 11,615 11,487 Dilutive effect of options/warrants and stock awards 106 — 91 Weighted average shares outstanding — diluted 11,779 11,615 11,578 Basic earnings/(loss) per share Basic earnings/(loss) per share from continuing operations $ 1.04 $ (0.09 ) $ 0.82 Basic earnings per share on income/(loss) from discontinued operations — — (0.01 ) Basic earnings/(loss) per share $ 1.04 $ (0.09 ) $ 0.81 Diluted earnings per share Diluted earnings/(loss) per share from continuing operations $ 1.03 $ (0.09 ) $ 0.82 Diluted earnings per share on income/(loss) from discontinued operations — — (0.01 ) Diluted earnings/(loss) per share $ 1.03 $ (0.09 ) $ 0.81

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Jul. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Performance Based Stock Awards Granted	A summary of the performance-based stock awards granted to certain employees and executives as Series 1 awards in fiscal years 2015, 2014 and 2013 is detailed below. 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 2015 Award 03/26/2015 Series 1 21,173 $ 25.85 07/31/2017 12/09/2014 Series 1 103,499 $ 17.81 07/31/2017 Forfeitures (2) (562 ) Total 124,110 135 % 168,042 Fiscal Year 2014 Award 02/25/2014 Series 1 127,315 $ 14.88 07/31/2016 Forfeitures (2) (6,635 ) Total 120,680 100 % 120,680 Fiscal Year 2013 Award 12/4/2012 Series 1 141,059 $ 18.75 07/31/2015 Forfeitures (2) (87,409 ) Total 53,650 0 % — (1) The percentage vesting for performance share awards is currently estimated at 135%, 100% and 0% of the target awards for the fiscal year 2015, 2014 and 2013 awards, respectively. (2) Forfeitures include Series 1 awards that were granted in fiscal years 2015, 2014 and 2013 to certain employees that were forfeited at the termination of their employment.
Summary of Activity for Time-Based Stock Awards	A summary of activity for time-based stock awards for the fiscal year ended July 31, 2015 is presented below: Shares Weighted-Average Grant-Date Fair Value Non-vested on August 1, 2014 50,100 $ 19.19 Granted (1) 68,774 20.00 Vested (2) (36,186 ) 19.65 Forfeited — — Non-vested on July 31, 2015 82,688 19.66 (1) Includes 19,386 share awards granted to non-employee directors during fiscal year 2015. The director awards were granted for a three month service period. The director awards were granted at the end of each quarter and vested once the service period was complete. Includes 8,000 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 41,388 share awards granted to certain employees and executives during fiscal year 2015 which are expected to vest on July 31, 2017. The Company recognizes compensation expense related to the awards over the respective service period. (2) Includes 19,386 share awards granted to non-employee directors indicated above and 16,800 share awards granted to employees.

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Jul. 31, 2015
Discontinued Operations And Disposal Groups [Abstract]
Sales and Income Before Income Tax Reported in Discontinued Operations	Animal health net sales and income before income tax reported in discontinued operations were as follows for the fiscal year ended July 31. There were no such amounts for fiscal year 2015 or 2014: 2013 (Amounts in thousands) Revenue $ 57 Income (loss) before income taxes (25 )

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Jul. 31, 2015
Segment Reporting [Abstract]
Segment Information	The Company has two reportable segments—electronic chemicals and other chemicals. In conjunction with the acquisition of the industrial valve lubricants and sealants business, 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 and other chemicals business segments. Previously the Company had two reportable segments – electronic chemicals and wood treating chemicals. The electronic chemicals segment includes the ultra pure chemicals business acquired from OM Group on May 31, 2013 and represents the substantial majority of the Company’s on-going operations. During the second quarter ended January 31, 2015, the Company sold the creosote business which, along with the Company’s penta business, comprised the previous wood treating chemicals segment. The remaining piece of the wood treating chemicals segment was combined with the recently acquired industrial lubricants business and are presented as the other chemicals segment. Therefore, as of May 1, 2015 our other chemicals segment includes the Company’s penta business and the recently acquired industrial valve lubricants and sealants business. 2015 2014 2013 (Amounts in thousands) Sales Electronic chemicals $ 265,608 $ 253,754 $ 165,755 Other chemicals 54,820 99,514 97,185 Total sales for reportable segments $ 320,428 $ 353,268 $ 262,940 Depreciation and amortization (1) Electronic chemicals $ 12,257 $ 13,240 $ 7,416 Other chemicals 626 400 418 Other — general corporate 648 477 461 Total consolidated depreciation and amortization $ 13,531 $ 14,117 $ 8,295 Segment income from operations (2) Electronic chemicals $ 21,787 $ 14,089 $ 13,992 Other chemicals 8,735 8,390 10,522 Total segment income from operations $ 30,522 $ 22,479 $ 24,514
Overhead Expenses Allocated to Segment Income	Corporate overhead expenses allocated to segment income for the fiscal years ended July 31, 2015, 2014 and 2013 were as follows: 2015 2014 2013 (Amounts in thousands) Electronic chemicals $ 10,780 $ 8,751 $ 5,218 Other chemicals 4,071 4,458 4,461 Total corporate overhead expense allocation $ 14,851 $ 13,209 $ 9,679
Reconciliation of Total Segment to Consolidated Amounts	A reconciliation of total segment to consolidated amounts as of July 31, 2015 and 2014, and for fiscal years 2015, 2014 and 2013 is set forth in the table below. 2015 2014 2013 (Amounts in thousands) Assets: Total assets for reportable segments $ 228,233 $ 233,580 $ 244,015 Total assets for discontinued operations (1) — — 467 Other current assets 8,440 7,690 9,120 Other assets 5,686 9,588 8,413 Total assets $ 242,359 $ 250,858 $ 262,015 Sales: Total sales for reportable segments $ 320,428 $ 353,268 $ 262,940 Other (2) 70 138 371 Net sales $ 320,498 $ 353,406 $ 263,311 Segment income from operations: Total segment income from operations (3) $ 30,522 $ 22,479 $ 24,514 Other corporate expense (3) (7,029 ) (7,652 ) (7,334 ) Restructuring and realignment charges (6,904 ) (10,876 ) - Operating income 16,589 3,951 17,180 Interest expense, net (1,407 ) (2,854 ) (1,771 ) Other income/(expense), net 3,702 (831 ) (208 ) Income from continuing operations before income taxes $ 18,884 $ 266 $ 15,201
Geographic Data	Geographic Data: 2015 2014 2013 (Amounts in thousands) Net sales: United States $ 183,384 $ 212,903 $ 200,184 International 137,114 140,503 63,127 Net sales $ 320,498 $ 353,406 $ 263,311 Property, plant and equipment, net: United States $ 45,257 $ 49,776 International 35,332 42,674 Property, plant and equipment, net $ 80,589 $ 92,450 (1) Reflects deferred tax assets as of July 31, 2013. (2) Primarily reflects income in connection with the sale of the animal health business. See Note 12. (3) Other corporate expense primarily represents employee stock-based compensation expenses and those expenses associated with the Company’s operation as a public entity such as board compensation, audit expense, fees related to the listing of our stock and expenses incurred to pursue acquisition opportunities.

Restructuring and Realignment38

Restructuring and Realignment Events (Tables)	12 Months Ended
	Jul. 31, 2015
Restructuring And Related Activities [Abstract]
Accrued Liability Associated with Restructuring and Other Related Charges	At July 31, 2015, 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, 2013 $ — $ — $ — $ — Charges 2,631 1,260 34 3,925 Payments (698 ) (438 ) 0 (1,136 ) Adjustment (45 ) (12 ) (7 ) (64 ) Accrued liability at July 31, 2014 $ 1,888 $ 810 $ 27 $ 2,725 Charges — 90 11 101 Payments (882 ) (654 ) (12 ) (1,548 ) Adjustment (290 ) (77 ) (9 ) (376 ) Accrued liability at July 31, 2015 $ 716 $ 169 $ 17 $ 902
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, 2014 $ 3,870 Charges 671 Payments (3,721 ) Adjustment (9 ) Asset retirement obligation at July 31, 2015 $ 811

Selected Quarterly Financial 39

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Jul. 31, 2015
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, 2015 Net sales $ 90,779 $ 79,762 $ 73,964 $ 75,993 Gross profit 27,591 28,555 26,815 26,516 Operating income 2,819 3,167 4,761 5,842 Income before income taxes 1,988 8,534 2,827 5,535 Net income 1,185 5,490 2,135 3,328 Earnings per share: Net income per share - basic $ 0.10 $ 0.47 $ 0.18 $ 0.29 - diluted 0.10 0.47 0.18 0.28 Year Ended July 31, 2014 Net sales $ 93,560 $ 84,253 $ 84,437 $ 91,156 Gross profit 25,567 25,190 24,765 27,977 Operating income/(loss) 3,055 (1,603 ) 2,914 (415 ) Income/(loss) before income taxes 2,077 (2,384 ) 1,883 (1,310 ) Net income /(loss) 1,352 (2,744 ) 1,226 (822 ) Earnings/(loss) per share: Income/(loss) per share - basic $ 0.12 $ (0.24 ) $ 0.11 $ (0.07 ) - diluted 0.12 (0.24 ) 0.11 (0.07 )

Summary of Significant Accoun40

Summary of Significant Accounting Policies - Additional Information (Detail)	Jan. 16, 2016USD ($)	Jul. 31, 2015USD ($)ProductSegmentCustomer	Jul. 31, 2014USD ($)Customer	Jul. 31, 2013USD ($)
Schedule Of Significant Accounting Policies [Line Items]
Number of industrial wood treating chemicals products | Product		1
Number of reportable segments | Segment		2
Number of customers representing more than 10% of accounts receivable | Customer		1	1
Allowances for accounts receivables		$ 144,000	$ 272,000
Depreciation expense		17,500,000	16,500,000
Depreciation related to restructuring and realignment		5,640,000	4,210,000
Goodwill		22,408,000	12,595,000	$ 10,929,000
Goodwill wrote off on sale of business		662,000
Asset retirement obligations recognized			3,700,000
Non-cash Impairment charges			2,741,000
Foreign currency translation resulting in gains (loss)		(10,200,000)	3,100,000	1,800,000
Other Chemicals
Schedule Of Significant Accounting Policies [Line Items]
Goodwill		14,469,000	3,779,000	3,779,000
Goodwill wrote off on sale of business		662,000
Electronic Chemicals
Schedule Of Significant Accounting Policies [Line Items]
Goodwill		$ 7,939,000	$ 8,816,000	$ 7,150,000
Scenario Forecast
Schedule Of Significant Accounting Policies [Line Items]
Goodwill wrote off on sale of business	$ 662,000
Accounts Receivable | First Customer
Schedule Of Significant Accounting Policies [Line Items]
Percentage of accounts receivable for significant customer		9.10%	15.00%

Estimated Useful Lives of Class

Estimated Useful Lives of Classes of Assets (Detail)	12 Months Ended
	Jul. 31, 2015
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) - USD ($)	May. 02, 2015	May. 31, 2013	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Business Acquisition [Line Items]
Common stock, shares outstanding			11,690,439				11,649,001				11,690,439	11,649,001
Net sales			$ 75,993,000	$ 73,964,000	$ 79,762,000	$ 90,779,000	$ 91,156,000	$ 84,437,000	$ 84,253,000	$ 93,560,000	$ 320,498,000	$ 353,406,000	$ 263,311,000
Net income/(loss)			$ 3,328,000	$ 2,135,000	$ 5,490,000	$ 1,185,000	$ (822,000)	$ 1,226,000	$ (2,744,000)	$ 1,352,000	12,138,000	$ (988,000)	9,348,000
Business acquisition, cash paid											21,938,000
Valves Incorporated of Texas
Business Acquisition [Line Items]
Common stock, shares outstanding	606,875
Total purchase consideration	$ 23,707,000
Issuance of common stock shares for acquisitions of businesses	606,875
Previously owned shares cancelled	606,875
Additional shares issued net	0
Acquisition-related costs incurred											500,000
Purchase price retained as holdback for potential inventory adjustments and indemnity claims	$ 1,000,000
Release of holdback for inventory adjustment	500,000
Holdback for potential indemnity claims	$ 500,000
Potential indemnity holdback release period	18 months
Inventory adjustment holdback released	2015-08
Net sales											2,100,000
Net income/(loss)											$ 500,000
Ultra Pure Chemicals
Business Acquisition [Line Items]
Acquisition-related costs incurred													2,100,000
Net sales													16,000,000
Net income/(loss)													979,000
Business acquisition, cash paid		$ 63,200,000
Business acquisition, working capital adjustment		149,000
Depreciation and amortization													3,100,000
Ultra Pure Chemicals | Secured Debt | Revised Credit Facility
Business Acquisition [Line Items]
Interest expense related to the revised credit facility													1,000,000
Performance Products And Solutions
Business Acquisition [Line Items]
Integration costs related to acquisition													$ 577,000
Revolving Loan Facility | Valves Incorporated of Texas
Business Acquisition [Line Items]
Long-term debt	$ 23,500,000
Revolving Loan Facility | Ultra Pure Chemicals | Secured Debt
Business Acquisition [Line Items]
Long-term debt		$ 65,000,000

Summary of Acquired Assets and

Summary of Acquired Assets and Assumed Liabilities and Preliminary Acquisition Accounting for Fair Value of Assets Recognized (Detail) - USD ($) $ in Thousands	Jul. 31, 2015	May. 02, 2015	Jul. 31, 2014	Jul. 31, 2013	May. 31, 2013
Intangible assets:
Goodwill	$ 22,408		$ 12,595	$ 10,929
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 - noncurrent		(6,178)
Net assets acquired		12,355
Goodwill		11,352
Total purchase consideration		23,707
Valves Incorporated of Texas | Customer Relationships
Intangible assets:
Total intangible assets		10,291
Valves Incorporated of Texas | Trade name 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
Ultra Pure Chemicals
Business Acquisition [Line Items]
Cash					$ 689
Accounts receivable					14,698
Inventory					11,047
Other current assets					1,963
Property, plant and equipment					28,939
Intangible assets:
Total intangible assets					14,854
Total assets acquired					72,190
Current liabilities					11,401
Other long-term liabilities					6,206
Total liabilities assumed					17,607
Net assets acquired					54,583
Ultra Pure Chemicals | Value of product qualifications
Intangible assets:
Total intangible assets					12,800
Ultra Pure Chemicals | Non-compete agreement
Intangible assets:
Total intangible assets					1,900
Ultra Pure Chemicals | Transition services
Intangible assets:
Total intangible assets					$ 154

Unaudited Pro Forma Financial I

Unaudited Pro Forma Financial Information (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Jul. 31, 2013USD ($)$ / shares
Business Combinations [Abstract]
Revenues	$ 340,427
Operating income	15,955
Net income	$ 9,123
Earnings per share — basic | $ / shares	$ 0.79

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Jul. 31, 2015	Jul. 31, 2014
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 8,723	$ 7,914
Work in process	780	1,508
Supplies	525	1,793
Finished products	32,535	34,343
Less reserve for inventory obsolescence	(481)	(290)
Inventories, net	$ 42,082	$ 45,268

Property, Plant, and Equipment

Property, Plant, and Equipment and Related Accumulated Depreciation and Amortization (Detail) - USD ($) $ in Thousands	Jul. 31, 2015	Jul. 31, 2014
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 135,759	$ 136,127
Less accumulated depreciation and amortization	(61,936)	(52,972)
Property plant and equipment excluding construction in progress	73,823	83,155
Construction-in-progress	6,766	9,295
Property, plant and equipment, net	80,589	92,450
Land
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	13,257	15,763
Buildings and improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	38,036	42,664
Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	84,273	77,557
Leasehold improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 193	$ 143

Geographical Sources of Income

Geographical Sources of Income from Continuing Operations Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Income Tax Disclosure [Abstract]
United States									$ 20,442	$ 1,923	$ 12,033
Foreign									(1,558)	(1,657)	3,168
Income from continuing operations before income taxes	$ 5,535	$ 2,827	$ 8,534	$ 1,988	$ (1,310)	$ 1,883	$ (2,384)	$ 2,077	$ 18,884	$ 266	$ 15,201

Components of Income Tax Expens

Components of Income Tax Expense (Benefit) from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Current:
Federal	$ 9,176	$ 2,582	$ 2,833
Foreign	(127)	1,071	1,437
State	1,214	603	197
Total current	10,263	4,256	4,467
Deferred:
Federal	(3,660)	(1,978)	1,426
Foreign	293	(897)	(282)
State	(150)	(127)	104
Total deferred	(3,517)	(3,002)	1,248
Total	$ 6,746	$ 1,254	$ 5,715

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Income tax expense (benefit) allocated to discontinued operations			$ 65,000
Income tax examination liability of Italy subsidiary	$ 2,800,000
Liability for uncertain tax positions in Italy	$ 57,000	$ 326,000	$ 437,000
Federal income tax rate	35.00%	35.00%	35.00%
Accrued interest and penalties related to unrecognized tax benefits		$ 221,000
Interest and penalties recognized in tax provision	$ 163,000
Foreign
Net operating loss carry forwards not subject to expiration	$ 5,500,000

Deferred Tax Assets and Liabili

Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jul. 31, 2015	Jul. 31, 2014
Current deferred tax assets:
Bad debt expense	$ 238	$ 326
Inventory	675	787
Accrued liabilities	227	1,545
Employee benefits	2,025	1,879
Other	972	102
Less valuation allowance	(34)	(636)
Total current deferred tax assets	4,103	4,003
Non-current deferred tax assets
Net operating loss	1,629	839
Deferred compensation	1,490	616
Other	295
Less valuation allowance	(1,982)	(1,090)
Total non-current deferred tax assets	1,432	365
Current deferred tax liabilities:
Other		(128)
Prepaid assets	(341)	(398)
Total current deferred tax liabilities:	(341)	(526)
Non-current deferred tax liabilities:
Difference in amortization basis of intangibles	(11,131)	(7,129)
Difference in depreciable basis of property	(4,182)	(4,575)
Total non-current deferred tax liabilities	(15,313)	(11,704)
Net non-current deferred tax liability	$ (10,119)	$ (7,862)

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, 2015	Jul. 31, 2014	Jul. 31, 2013
Income Tax Disclosure [Abstract]
Income taxes at the federal statutory rate	$ 6,610	$ 93	$ 5,320
Effect of foreign operations	182	329	(65)
Change in valuation allowance	648	1,725
Adjustments to foreign operations	1,148	(916)
Effects of foreign currency fluctuations	(953)
State income taxes, net of federal income tax effect	639	269	232
Production deduction and tax credits	(1,182)
Acquisition related cost	125		714
Other	(471)	(246)	(486)
Total	$ 6,746	$ 1,254	$ 5,715

Schedule Of Gross Unrecognized

Schedule Of Gross Unrecognized Tax Benefits (Detail) $ in Thousands	12 Months Ended
	Jul. 31, 2015USD ($)
Income Tax Disclosure [Abstract]
Balance, at beginning of the period	$ 461
Increases related to prior years positions	619
Decreases related to prior years positions	(362)
Balance at end of the period	$ 718

Intangible Assets (Detail)

Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	13 years 9 months 18 days	13 years 1 month 6 days
Original Cost	$ 26,864	$ 16,421
Accumulated Amortization	(4,745)	(3,052)
Foreign Currency Translation Adjustment	(17)	880
Carrying Amount	22,102	14,249
Total intangible assets not subject to amortization	14,458	14,104
Total intangible assets, net	36,560	28,353
Other chemicals-penta product registrations
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization	8,765
Other chemicals-related trade name and trademark
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization	2,885
Other chemicals-proprietary manufacturing process
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization	$ 2,808
Creosote product registrations
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization		5,339
Penta product registrations
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization		$ 8,765
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	(839)	(559)
Foreign Currency Translation Adjustment	(87)	79
Carrying Amount	$ 1,278	$ 1,724
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	(77)	(67)
Carrying Amount	$ 40	$ 50
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	(3,649)	(2,426)
Foreign Currency Translation Adjustment	70	801
Carrying Amount	$ 10,521	$ 12,475
Other chemicals-customer relationships
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	15 years
Original Cost	$ 10,291
Accumulated Amortization	(172)
Carrying Amount	$ 10,119
Other chemicals-other related contracts
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	5 years
Original Cost	$ 152
Accumulated Amortization	(8)
Carrying Amount	$ 144

Intangible Assets (Parenthetica

Intangible Assets (Parenthetical) (Detail)	May. 31, 2015	May. 31, 2013	Jul. 31, 2015	Jul. 31, 2014
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			15 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
Other chemicals-customer relationships
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets	15 years		15 years
Other chemicals-other related contracts
Finite Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets	5 years		5 years

Intangible Asset - Additional I

Intangible Asset - Additional Information (Detail) - USD ($)	May. 31, 2015	May. 31, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Industrial lubricants business acquisition			$ 11,352,000
Amortization expense			1,700,000	$ 1,800,000	$ 573,000
Estimated amortization expense for fiscal years 2016			2,100,000
Estimated amortization expense for fiscal years 2017			2,100,000
Estimated amortization expense for fiscal years 2018			2,000,000
Estimated amortization expense for fiscal years 2019			2,000,000
Estimated amortization expense for fiscal years 2020			$ 1,800,000
Minimum
Estimated useful lives of intangible assets			5 years
Maximum
Estimated useful lives of intangible assets			15 years
Other chemicals-customer relationships
Acquired intangible assets	$ 10,300,000
Estimated useful lives of intangible assets	15 years		15 years
Other chemicals-other related contracts
Acquired intangible assets	$ 200,000
Estimated useful lives of intangible assets	5 years		5 years
Electronic chemicals-value of product qualifications
Acquired intangible assets		$ 12,800,000
Estimated useful lives of intangible assets		15 years
Electronic chemicals-value of product qualifications | Minimum
Estimated useful lives of intangible assets			5 years	5 years
Electronic chemicals-value of product qualifications | Maximum
Estimated useful lives of intangible assets			15 years	15 years
Electronic chemicals-related contracts
Acquired intangible assets		$ 1,900,000
Estimated useful lives of intangible assets		7 years
Electronic chemicals-related contracts | Minimum
Estimated useful lives of intangible assets			5 years	5 years
Electronic chemicals-related contracts | Maximum
Estimated useful lives of intangible assets			8 years	8 years

Carrying Value of Goodwill by O

Carrying Value of Goodwill by Operating Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Goodwill [Line Items]
Carrying value, beginning balance	$ 12,595	$ 10,929
Working capital adjustment from the UPC acquisition		535
Finalization of purchase price allocation		880
Industrial lubricants business acquisition	11,352
Foreign currency translation adjustment	(877)	251
Sale of creosote business	(662)
Carrying value, ending balance	22,408	12,595
Other Chemicals
Goodwill [Line Items]
Carrying value, beginning balance	3,779	3,779
Industrial lubricants business acquisition	11,352
Sale of creosote business	(662)
Carrying value, ending balance	14,469	3,779
Electronic Chemicals
Goodwill [Line Items]
Carrying value, beginning balance	8,816	7,150
Working capital adjustment from the UPC acquisition		535
Finalization of purchase price allocation		880
Foreign currency translation adjustment	(877)	251
Carrying value, ending balance	$ 7,939	$ 8,816

Long-Term Obligations - Additio

Long-Term Obligations - Additional Information (Detail) - USD ($)	Oct. 09, 2014	Jul. 31, 2015	Jul. 31, 2014
Debt Instrument [Line Items]
Long-term debt		$ 53,000,000	$ 60,000,000
Line of credit facility, outstanding	$ 38,000,000
Repayments of secured debt		$ 20,000,000
Fixed charge coverage ratio		1.50%
Ratio of funded debt to EBITDA maximum		3.25%
Current ratio		1.50%
Ratio of funded debt to EBITDA maximum, step-up during an acquisition period with lender's consent		3.50%
Note Purchase Agreement
Debt Instrument [Line Items]
Repayments of secured debt	20,000,000
Senior Secured Debt | Note Purchase Agreement
Debt Instrument [Line Items]
Long-term debt		$ 20,000,000	$ 20,000,000
Note purchase agreement interest rate		7.43%	7.43%
Revolving Loan Facility
Debt Instrument [Line Items]
Line of credit facility, outstanding		$ 53,000,000
Maximum amount of revolving facility		150,000,000
Maximum amount of revolving facility net of unused letter of credit		94,200,000
Reduction credit capacity due to unused letters of credit		2,800,000
Amount available under revolving facility		$ 76,800,000
Debt instrument variable rate		1.189%
Revolving Loan Facility | Maximum
Debt Instrument [Line Items]
Percentage of unused commitment fee on unused amount of commitments under revolving loan facility		0.30%
Revolving Loan Facility | Minimum
Debt Instrument [Line Items]
Percentage of unused commitment fee on unused amount of commitments under revolving loan facility		0.15%
Revolving Loan Facility | Senior Secured Debt
Debt Instrument [Line Items]
Debt instrument variable rate			2.155%
Revolving Loan Facility | Senior Secured Debt | Debt instrument, maturing on April 30, 2018
Debt Instrument [Line Items]
Long-term debt			$ 40,000,000
Loan facility maturity date			Apr. 30, 2018
Revolving Loan Facility | Senior Secured Debt | Second Restated Credit Facility
Debt Instrument [Line Items]
Maximum amount of revolving facility	150,000,000
Amount available under revolving facility	76,800,000
Amount of cash available under contractual agreement with lender's approval	$ 100,000,000
Loan facility maturity date		Oct. 9, 2019

Long-Term Debt and Current Matu

Long-Term Debt and Current Maturities (Detail) - USD ($) $ in Thousands	Jul. 31, 2015	Jul. 31, 2014
Debt Instrument [Line Items]
Total debt	$ 53,000	$ 60,000
Long-term debt, net of current maturities	53,000	60,000
Senior Secured Debt | Note Purchase Agreement
Debt Instrument [Line Items]
Total debt	20,000	20,000
Senior Secured Debt | Revolving Loan Facility | Debt instrument, maturing on April 30, 2018
Debt Instrument [Line Items]
Total debt		$ 40,000
Senior Secured Debt | Revolving Loan Facility | Debt instrument, maturing on October 9, 2019
Debt Instrument [Line Items]
Total debt	$ 53,000

Long-Term Debt and Current Ma59

Long-Term Debt and Current Maturities (Parenthetical) (Detail) - Senior Secured Debt	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Note Purchase Agreement
Debt Instrument [Line Items]
Loan maturity date	Dec. 31, 2015
Note purchase agreement interest rate	7.43%	7.43%
Revolving Loan Facility | Debt instrument, maturing on April 30, 2018
Debt Instrument [Line Items]
Loan facility maturity date		Apr. 30, 2018
Revolving Loan Facility | Debt instrument, maturing on October 9, 2019
Debt Instrument [Line Items]
Loan facility maturity date	Oct. 9, 2019
London Interbank Offered Rate (LIBOR) | Revolving Loan Facility | Debt instrument, maturing on April 30, 2018
Debt Instrument [Line Items]
Variable interest rate		2.00%
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 Funded Debt to Ebitda

Ratio of Funded Debt to Ebitda (Detail)	12 Months Ended
	Jul. 31, 2015
Range One
Debt Instrument [Line Items]
Variable interest rate	1.875%
Range Two
Debt Instrument [Line Items]
Variable interest rate	1.625%
Range Three
Debt Instrument [Line Items]
Variable interest rate	1.50%
Range Four
Debt Instrument [Line Items]
Variable interest rate	1.375%
Range Five
Debt Instrument [Line Items]
Variable interest rate	1.25%
Range Six
Debt Instrument [Line Items]
Variable interest rate	1.125%
Range Seven
Debt Instrument [Line Items]
Variable interest rate	1.00%

Ratio of Funded Debt to Ebitd61

Ratio of Funded Debt to Ebitda (Parenthetical) (Detail)	Oct. 09, 2014
Range One | Minimum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	3
Range Two | Minimum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	2.75
Range Two | Maximum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	3
Range Three | Minimum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	2.50
Range Three | Maximum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	2.75
Range Four | Minimum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	2.25
Range Four | Maximum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	2.50
Range Five | Minimum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	2
Range Five | Maximum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	2.25
Range Six | Minimum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	1.50
Range Six | Maximum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	2
Range Seven | Maximum
Debt Instrument [Line Items]
Ratio of Funded Debt to EBITDA	1.50

Principal Payments Due Under Lo

Principal Payments Due Under Long-Term Debt Agreements (Detail) - USD ($) $ in Thousands	Jul. 31, 2015	Jul. 31, 2014
Debt Disclosure [Abstract]
Long-term debt	$ 53,000	$ 60,000
2,020	$ 53,000

Future Payments Under Certain C

Future Payments Under Certain Contractual Obligation (Detail) $ in Thousands	Jul. 31, 2015USD ($)
Commitments And Contingencies Disclosure [Abstract]
Operating leases, total	$ 10,811
Operating leases, first year	2,772
Operating leases, second year	1,722
Operating leases, third year	849
Operating leases, fourth year	693
Operating leases, fifth year	537
Operating leases, thereafter	4,238
Purchase obligation, total	78,296	[1]
Purchase obligation, first year	45,790	[1]
Purchase obligation, second year	28,419	[1]
Purchase obligation, third year	4,087	[1]
Contractual obligation, total	89,107
Contractual obligation, first year	48,562
Contractual obligation, second year	30,141
Contractual obligation, third year	4,936
Contractual obligation, fourth year	693
Contractual obligation, fifth year	537
Contractual obligation, thereafter	$ 4,238
[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)	Jul. 31, 2002USD ($)	Apr. 30, 2015USD ($)	Jul. 31, 2015USD ($)Case	Jul. 31, 2015EUR (€)	Jul. 31, 2014USD ($)	Jul. 31, 2013USD ($)
Commitments and Contingencies [Line Items]
Rent expenses related to operating leases			$ 3,400,000		$ 3,800,000	$ 2,700,000
FIFRA research and testing programs expenses			$ 977,000		667,000	522,000
Foreign currency exchange rate, translation			1.103
Liability for uncertain tax positions in Italy			$ 57,000		$ 326,000	$ 437,000
EPA estimated remediation cost			$ 22,000,000
Litigation Liability		$ 1,300,000
Star Lake Canal Superfund Site
Commitments and Contingencies [Line Items]
Reimbursement costs incurred by EPA	$ 500,000
Foreign
Commitments and Contingencies [Line Items]
Number of cases contesting in Provincial Tax Court at a foreign subsidiary | Case			2
Proposed adjustment from taxing authorities resulting additional income tax, interest and penalties			$ 885,000	€ 802,000
Tax Assessment Pertaining to the 3 Year Period Ended July 31, 2011 | Foreign
Commitments and Contingencies [Line Items]
Proposed adjustment from taxing authorities resulting additional income tax, interest and penalties			$ 2,000,000	€ 1,800,000

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Defined Contribution Plan Disclosure [Line Items]
Percent of contribution made under plan	4.00%
Contribution made under plan	$ 573,000	$ 608,000	$ 457,000
Contribution made by foreign subsidiaries under defined contribution plans	1,300,000	1,500,000
Benefit obligations in connection with foreign subsidiaries included in the acquisition of the UPC business	1,200,000	1,100,000
Liability under employee benefit arrangement	$ 490,000	$ 553,000
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, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Earnings Per Share [Abstract]
Income/(loss) from continuing operations									$ 12,138	$ (988)	$ 9,486
Income/(loss) from discontinued operations											(138)
Net income/(loss)	$ 3,328	$ 2,135	$ 5,490	$ 1,185	$ (822)	$ 1,226	$ (2,744)	$ 1,352	$ 12,138	$ (988)	$ 9,348
Weighted average shares outstanding — basic									11,673	11,615	11,487
Dilutive effect of options/warrants and stock awards									106		91
Weighted average shares outstanding — diluted									11,779	11,615	11,578
Basic earnings/(loss) per share
Basic earnings/(loss) per share from continuing operations									$ 1.04	$ (0.09)	$ 0.82
Basic earnings per share on income/(loss) from discontinued operations											(0.01)
Basic earnings/(loss) per share	$ 0.29	$ 0.18	$ 0.47	$ 0.10	$ (0.07)	$ 0.11	$ (0.24)	$ 0.12	1.04	(0.09)	0.81
Diluted earnings per share
Diluted earnings/(loss) per share from continuing operations									1.03	(0.09)	0.82
Diluted earnings per share on income/(loss) from discontinued operations											(0.01)
Diluted earnings/(loss) per share	$ 0.28	$ 0.18	$ 0.47	$ 0.10	$ (0.07)	$ 0.11	$ (0.24)	$ 0.12	$ 1.03	$ (0.09)	$ 0.81

Earnings per Share - Additional

Earnings per Share - Additional Information (Detail) - shares	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Earnings Per Share [Abstract]
Number of shares potentially dilutive securities not included in the computation of diluted earnings per share	136	21,033	6,222

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail)

Dec. 09, 2014$ / sharesshares

Feb. 25, 2014shares

Sep. 24, 2013Installmentshares

Dec. 04, 2012shares

[1]

Oct. 31, 2013USD ($)

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

Jul. 31, 2014USD ($)shares

Jul. 31, 2013USD ($)shares

Mar. 26, 2015$ / shares

Aug. 01, 2014$ / sharesshares

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

Stock option outstanding

0

0

Stock-based compensation expense | $

$ 2,766,000

$ 2,231,000

$ 446,000

Share based compensation, related tax benefits | $

887,000

$ 825,000

$ 168,000

Unrecognized compensation costs related to outstanding stock awards | $

$ 4,200,000

Weighted average period for recognition of compensation cost

1 year 9 months 18 days

Granted, options

0

0

0

Stock options exercised

0

Total intrinsic value of option exercised | $

$ 952,000

$ 1,600,000

Total fair value of shares vested | $

$ 0

$ 39,000

Performance Shares

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

Target Award Shares

124,110

120,680

53,650

Total fair value of shares vested | $

$ 233,000

$ 45,000

$ 118,000

Target number of shares outstanding, non vested

244,790

185,915

Target Award Shares, forfeited

562

[1]

6,635

[1]

87,409

12,147

Awards vested

0

Share based payment award, expiration date

Jul. 31, 2017

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

$ 15.74

Grant Date Fair Value | $ / shares

$ 17.36

$ 14.88

Series 1

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

Target Award Shares

124,672

Maximum award, as a percentage of target award

167.00%

150.00%

Time Based Shares

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

Target Award Shares

[2]

68,774

Total fair value of shares vested | $

$ 944,000

$ 1,822,000

$ 542,000

Target number of shares outstanding, non vested

82,688

50,100

Awards vested

[3]

36,186

Grant Date Fair Value | $ / shares

$ 19.66

$ 19.19

Christopher T. Fraser

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

Share based payment recognized | $

$ 1,100,000

Christopher T. Fraser | Performance Shares

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

Shares award vesting period

1 year

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

1996 Stock Option Plan

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

Stock option outstanding

0

LTI Plan

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

Shares available for future grant

124,575

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

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

Personnel Fiscal Year 2015 Award | Performance Shares

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

Closing stock price | $ / shares

$ 25.85

Executive Fiscal Year 2015 Award | Performance Shares

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

Closing stock price | $ / shares

$ 17.81

Two Thousand Four Long Term Incentive Plan | Christopher T. Fraser | Performance Shares

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

Target Award Shares

10,000

Certain Organizational Objectives | Christopher T. Fraser | Performance Shares

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

Target Award Shares

4,000

[1]

Forfeitures include Series 1 awards that were granted in fiscal years 2015, 2014 and 2013 to certain employees that were forfeited at the termination of their employment.

[2]

Includes 19,386 share awards granted to non-employee directors during fiscal year 2015. The director awards were granted for a three month service period. The director awards were granted at the end of each quarter and vested once the service period was complete. Includes 8,000 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 41,388 share awards granted to certain employees and executives during fiscal year 2015 which are expected to vest on July 31, 2017. The Company recognizes compensation expense related to the awards over the respective service period.

[3]

Includes 19,386 share awards granted to non-employee directors indicated above and 16,800 share awards granted to employees.

Summary of Performance Based St

Summary of Performance Based Stock Awards Granted (Detail) - $ / shares		Mar. 26, 2015	Dec. 09, 2014		Feb. 25, 2014		Dec. 04, 2012		Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Actual or Expected Percentage of Vesting									135.00%	100.00%	0.00%
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target Award Shares									124,110	120,680	53,650
Target Award Shares, forfeited			(562)	[1]	(6,635)	[1]	(87,409)	[1]	(12,147)
Measurement Period Ending									Jul. 31, 2017
Actual or Expected Percentage of Vesting	[2]								135.00%	100.00%	0.00%
Shares Projected to Vest or Vested			168,042		120,680
Performance Shares | Series Award One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant Dates		Mar. 26, 2015							Dec. 9, 2014	Feb. 25, 2014	Dec. 4, 2012
Target Award Shares		21,173	103,499		127,315		141,059
Grant Date Fair Value		$ 25.85	$ 17.81		$ 14.88		$ 18.75
Measurement Period Ending		Jul. 31, 2017	Jul. 31, 2017		Jul. 31, 2016		Jul. 31, 2015
[1]	Forfeitures include Series 1 awards that were granted in fiscal years 2015, 2014 and 2013 to certain employees that were forfeited at the termination of their employment.
[2]	The percentage vesting for performance share awards is currently estimated at 135%, 100% and 0% of the target awards for the fiscal year 2015, 2014 and 2013 awards, respectively.

Summary of Performance Based 70

Summary of Performance Based Stock Awards Granted (Parenthetical) (Detail)	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Actual or Expected Percentage of Vesting	135.00%	100.00%	0.00%

Summary of Activity for Time-Ba

Summary of Activity for Time-Based Stock Awards (Detail) - Time Based Shares	12 Months Ended
	Jul. 31, 2015$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target Award Shares	68,774	[1]
Vested	(36,186)	[2]
Non-vested on July 31, 2015	82,688
Grant Date Fair Value | $ / shares	$ 20	[1]
Vested | $ / shares	19.65	[2]
Non-vested on July 31, 2015 | $ / shares	$ 19.66
[1]	Includes 19,386 share awards granted to non-employee directors during fiscal year 2015. The director awards were granted for a three month service period. The director awards were granted at the end of each quarter and vested once the service period was complete. Includes 8,000 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 41,388 share awards granted to certain employees and executives during fiscal year 2015 which are expected to vest on July 31, 2017. The Company recognizes compensation expense related to the awards over the respective service period.
[2]	Includes 19,386 share awards granted to non-employee directors indicated above and 16,800 share awards granted to employees.

Summary of Activity for Time-72

Summary of Activity for Time-Based Stock Awards (Parenthetical) (Detail) - Time Based Shares	12 Months Ended
	Jul. 31, 2015shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target Award Shares	68,774	[1]
Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target Award Shares	8,000
Employees | Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target Award Shares	16,800
Employees and Executives
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target Award Shares	41,388
Non-Employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target Award Shares	19,386
[1]	Includes 19,386 share awards granted to non-employee directors during fiscal year 2015. The director awards were granted for a three month service period. The director awards were granted at the end of each quarter and vested once the service period was complete. Includes 8,000 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 41,388 share awards granted to certain employees and executives during fiscal year 2015 which are expected to vest on July 31, 2017. The Company recognizes compensation expense related to the awards over the respective service period.

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Detail) - USD ($)	Mar. 01, 2012	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loss from discontinued operations, before income taxes				$ (203,000)
Bayer Healthcare Llc
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loss from discontinued operations, before income taxes				(82,000)
Post closing adjustment costs				57,000
Animal Health Segment
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loss from discontinued operations, before income taxes		$ 0	$ 0	(25,000)
Restricted cash held in escrow related to business sale	$ 1,000,000
Revenue		$ 0	$ 0	$ 57,000
Animal Health Segment | Maximum
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Period of escrow deposit release	5 years

Sales and Income Before Income

Sales and Income Before Income Tax Reported in Discontinued Operations (Detail) - USD ($)	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (loss) before income taxes			$ (203,000)
Animal Health Segment
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 0	57,000
Income (loss) before income taxes	$ 0	$ 0	$ (25,000)

Segment Information - Additiona

Segment Information - Additional Information (Detail) - Segment	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Segment Reporting Information [Line Items]
Number of reportable segments	2
Customer Concentration Risk | Electronic Chemicals | Sales
Segment Reporting Information [Line Items]
Revenue generated from single external customer	23.00%	15.00%	20.00%
Customer Concentration Risk | Wood Treating | Sales
Segment Reporting Information [Line Items]
Revenue generated from single external customer		13.00%	16.00%

Segment Information (Detail)

Segment Information (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Segment Reporting Information [Line Items]
Total consolidated sales		$ 75,993	$ 73,964	$ 79,762	$ 90,779	$ 91,156	$ 84,437	$ 84,253	$ 93,560	$ 320,498	$ 353,406	$ 263,311
Total consolidated depreciation and amortization										13,531	14,117	8,295
Total consolidated income from operations		$ 5,842	$ 4,761	$ 3,167	$ 2,819	$ (415)	$ 2,914	$ (1,603)	$ 3,055	16,589	3,951	17,180
Operating Segments
Segment Reporting Information [Line Items]
Total consolidated sales										320,428	353,268	262,940
Total consolidated depreciation and amortization	[1]									13,531	14,117	8,295
Total consolidated income from operations	[2],[3]									30,522	22,479	24,514
Operating Segments | Electronic Chemicals
Segment Reporting Information [Line Items]
Total consolidated sales										265,608	253,754	165,755
Total consolidated depreciation and amortization	[1]									12,257	13,240	7,416
Total consolidated income from operations	[3]									21,787	14,089	13,992
Operating Segments | Other Chemicals
Segment Reporting Information [Line Items]
Total consolidated sales										54,820	99,514	97,185
Total consolidated depreciation and amortization	[1]									626	400	418
Total consolidated income from operations	[3]									8,735	8,390	10,522
Other
Segment Reporting Information [Line Items]
Total consolidated sales	[4]									70	138	371
Total consolidated depreciation and amortization	[1]									$ 648	$ 477	$ 461
[1]	Segment depreciation excludes depreciation for restructuring and realignment.
[2]	Other corporate expense primarily represents employee stock-based compensation expenses and those expenses associated with the Company’s operation as a public entity such as board compensation, audit expense, fees related to the listing of our stock and expenses incurred to pursue acquisition opportunities.
[3]	Segment income from operations includes allocated corporate overhead expenses, but excludes restructuring and realignment charges.
[4]	Primarily reflects income in connection with the sale of the animal health business. See Note 12.

Overhead Expenses Allocated to

Overhead Expenses Allocated to Segment Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Segment Reporting Information [Line Items]
Total corporate overhead expense allocation	$ 14,851	$ 13,209	$ 9,679
Operating Segments | Electronic Chemicals
Segment Reporting Information [Line Items]
Total corporate overhead expense allocation	10,780	8,751	5,218
Operating Segments | Other Chemicals
Segment Reporting Information [Line Items]
Total corporate overhead expense allocation	$ 4,071	$ 4,458	$ 4,461

Reconciliation of Total Segment

Reconciliation of Total Segment to Consolidated Amounts (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Segment Reporting Information [Line Items]
Total assets		$ 242,359				$ 250,858				$ 242,359	$ 250,858	$ 262,015
Total assets for discontinued operations	[1]											467
Other current assets		8,440				7,690				8,440	7,690	9,120
Other assets		5,686				9,588				5,686	9,588	8,413
Net sales		75,993	$ 73,964	$ 79,762	$ 90,779	91,156	$ 84,437	$ 84,253	$ 93,560	320,498	353,406	263,311
Total segment income from operations		5,842	4,761	3,167	2,819	(415)	2,914	(1,603)	3,055	16,589	3,951	17,180
Other corporate expense	[2]									(7,029)	(7,652)	(7,334)
Restructuring and realignment charges										(6,904)	(10,876)
Interest expense, net										(1,407)	(2,854)	(1,771)
Other income/(expense), net										3,702	(831)	(208)
Income from continuing operations before income taxes		5,535	$ 2,827	$ 8,534	$ 1,988	(1,310)	$ 1,883	$ (2,384)	$ 2,077	18,884	266	15,201
Operating Segments
Segment Reporting Information [Line Items]
Total assets		$ 228,233				$ 233,580				228,233	233,580	244,015
Net sales										320,428	353,268	262,940
Total segment income from operations	[2],[3]									30,522	22,479	24,514
Other
Segment Reporting Information [Line Items]
Net sales	[4]									$ 70	$ 138	$ 371
[1]	Reflects deferred tax assets as of July 31, 2013.
[2]	Other corporate expense primarily represents employee stock-based compensation expenses and those expenses associated with the Company’s operation as a public entity such as board compensation, audit expense, fees related to the listing of our stock and expenses incurred to pursue acquisition opportunities.
[3]	Segment income from operations includes allocated corporate overhead expenses, but excludes restructuring and realignment charges.
[4]	Primarily reflects income in connection with the sale of the animal health business. See Note 12.

Geographic Data (Detail)

Geographic Data (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Segment Reporting Information [Line Items]
Net sales	$ 75,993	$ 73,964	$ 79,762	$ 90,779	$ 91,156	$ 84,437	$ 84,253	$ 93,560	$ 320,498	$ 353,406	$ 263,311
Property, plant and equipment, net	80,589				92,450				80,589	92,450
United States
Segment Reporting Information [Line Items]
Net sales									183,384	212,903	200,184
Property, plant and equipment, net	45,257				49,776				45,257	49,776
International
Segment Reporting Information [Line Items]
Net sales									137,114	140,503	$ 63,127
Property, plant and equipment, net	$ 35,332				$ 42,674				$ 35,332	$ 42,674

Restructuring and Realignment80

Restructuring and Realignment Events - Additional Information (Detail) - USD ($)	12 Months Ended		24 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015
Restructuring Cost And Reserve [Line Items]
Accelerated depreciation	$ 900,000	$ 2,400,000
Asset retirement obligation		3,700,000
Depreciation expense	17,500,000	16,500,000
Non-cash Impairment charges		2,741,000
Closed Facilities
Restructuring Cost And Reserve [Line Items]
Restructuring charges over fiscal years 2015 and 2014			$ 4,300,000
Accelerated depreciation			$ 3,300,000
Hydrofluoric Acid Business
Restructuring Cost And Reserve [Line Items]
Accelerated depreciation	4,800,000
Severance Costs	$ 800,000
Bay Point Facility
Restructuring Cost And Reserve [Line Items]
Accelerated depreciation		800,000
Asset retirement obligation		3,700,000
Depreciation expense		$ 1,000,000

Restructuring and Realignment81

Restructuring and Realignment Events - Accrued Liability Associated with Restructuring and Other Related Charges (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	$ 2,725
Charges	101	$ 3,925
Payments	(1,548)	(1,136)
Adjustment	(376)	(64)
Accrued liability, Ending balance	902	2,725
Employee costs
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	1,888
Charges		2,631
Payments	(882)	(698)
Adjustment	(290)	(45)
Accrued liability, Ending balance	716	1,888
Decommissioning and Environmental
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	810
Charges	90	1,260
Payments	(654)	(438)
Adjustment	(77)	(12)
Accrued liability, Ending balance	169	810
Other
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	27
Charges	11	34
Payments	(12)	0
Adjustment	(9)	(7)
Accrued liability, Ending balance	$ 17	$ 27

Restructuring and Realignment82

Restructuring and Realignment Events - Schedule of Changes in Asset Retirement Obligation Associated with Realignment (Detail) $ in Thousands	12 Months Ended
	Jul. 31, 2015USD ($)
Restructuring And Related Activities [Abstract]
Asset retirement obligation at July 31, 2014	$ 3,870
Charges	671
Payments	(3,721)
Adjustment	(9)
Asset retirement obligation at July 31, 2015	$ 811

Selected Quarterly Financial 83

Selected Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 75,993	$ 73,964	$ 79,762	$ 90,779	$ 91,156	$ 84,437	$ 84,253	$ 93,560	$ 320,498	$ 353,406	$ 263,311
Gross profit	26,516	26,815	28,555	27,591	27,977	24,765	25,190	25,567	109,477	103,499	76,470
Operating income/(loss)	5,842	4,761	3,167	2,819	(415)	2,914	(1,603)	3,055	16,589	3,951	17,180
Income/(loss) before income taxes	5,535	2,827	8,534	1,988	(1,310)	1,883	(2,384)	2,077	18,884	266	15,201
Net income/(loss)	$ 3,328	$ 2,135	$ 5,490	$ 1,185	$ (822)	$ 1,226	$ (2,744)	$ 1,352	$ 12,138	$ (988)	$ 9,348
Net income/(loss) per share:
- basic	$ 0.29	$ 0.18	$ 0.47	$ 0.10	$ (0.07)	$ 0.11	$ (0.24)	$ 0.12	$ 1.04	$ (0.09)	$ 0.81
- diluted	$ 0.28	$ 0.18	$ 0.47	$ 0.10	$ (0.07)	$ 0.11	$ (0.24)	$ 0.12	$ 1.03	$ (0.09)	$ 0.81

Schedule II - Valuation And Q84

Schedule II - Valuation And Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Allowance for Doubtful Accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 272	$ 224	$ 16
Charged to costs and expenses		108	208
Additions/ Deductions	(128)	(60)
Balance at end of period	144	272	224
Inventory Valuation and Obsolescence
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	290	180	493
Charged to costs and expenses	941	221	107
Additions/ Deductions	(750)	(111)	(420)
Balance at end of period	481	290	$ 180
Valuation Allowance on Deferred Tax Assets
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	1,725
Charged to costs and expenses	291	1,725
Balance at end of period	$ 2,016	$ 1,725