KMG Chemicals 10-Q 11 Mar 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jan. 31, 2016	Mar. 09, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jan. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Trading Symbol	KMG
Entity Registrant Name	KMG CHEMICALS INC
Entity Central Index Key	1,028,215
Current Fiscal Year End Date	--07-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		11,730,498

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jan. 31, 2016	Jul. 31, 2015
Current assets
Cash and cash equivalents	$ 8,900	$ 7,517
Accounts receivable
Trade, net of allowances of $138 at January 31, 2016 and $144 at July 31, 2015	35,397	36,887
Other	5,473	3,668
Inventories, net	40,391	42,082
Current deferred tax assets		2,953
Prepaid expenses and other	2,295	3,738
Total current assets	92,456	96,845
Property, plant and equipment, net	81,294	80,589
Deferred tax assets	781	131
Goodwill	22,183	22,408
Intangible assets, net	35,026	36,560
Restricted cash	1,000	1,000
Other assets, net	4,789	4,826
Total assets	237,529	242,359
Current liabilities
Accounts payable	31,426	35,980
Accrued liabilities	11,277	9,602
Employee incentive accrual	3,019	4,852
Total current liabilities	45,722	50,434
Long-term debt, net of current maturities	47,000	53,000
Deferred tax liabilities	9,370	13,075
Other long-term liabilities	4,236	2,429
Total liabilities	$ 106,328	$ 118,938
Commitments and contingencies
Stockholders’ equity
Preferred stock, $0.01 par value, 10,000,000 shares authorized, none issued
Common stock, $0.01 par value, 40,000,000 shares authorized, 11,723,019 shares issued and outstanding at January 31, 2016 and 11,690,439 shares issued and outstanding at July 31, 2015	$ 117	$ 117
Additional paid-in capital	33,987	31,676
Accumulated other comprehensive loss	(12,065)	(9,667)
Retained earnings	109,162	101,295
Total stockholders’ equity	131,201	123,421
Total liabilities and stockholders’ equity	$ 237,529	$ 242,359

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jan. 31, 2016	Jul. 31, 2015
Statement Of Financial Position [Abstract]
Allowances for accounts receivables	$ 138	$ 144
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	11,723,019	11,690,439
Common stock, shares outstanding	11,723,019	11,690,439

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Income Statement [Abstract]
Net sales	$ 70,859	$ 79,762	$ 147,509	$ 170,541
Cost of sales	42,626	51,207	90,016	114,395
Gross profit	28,233	28,555	57,493	56,146
Distribution expenses	8,819	13,022	18,948	26,021
Selling, general and administrative expenses	12,722	9,707	23,937	18,907
Restructuring charges	555	296	1,021	873
Realignment charges		2,363	130	4,359
Operating income	6,137	3,167	13,457	5,986
Other (expense) income
Interest expense, net	(252)	(184)	(404)	(987)
Gain on sale of creosote distribution business, net		5,682		5,682
Other, net	149	(131)	132	(159)
Total other (expense) income, net	(103)	5,367	(272)	4,536
Income before income taxes	6,034	8,534	13,185	10,522
Provision for income taxes	(2,055)	(3,044)	(4,615)	(3,847)
Net income	$ 3,979	$ 5,490	$ 8,570	$ 6,675
Earnings per share
Net income per common share basic	$ 0.34	$ 0.47	$ 0.73	$ 0.57
Net income per common share diluted	$ 0.33	$ 0.47	$ 0.72	$ 0.57
Weighted average shares outstanding
Basic	11,717	11,669	11,707	11,664
Diluted	11,915	11,759	11,890	11,728

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 3,979	$ 5,490	$ 8,570	$ 6,675
Other comprehensive income
Foreign currency translation loss	(1,914)	(5,428)	(2,398)	(9,402)
Total other comprehensive loss	(1,914)	(5,428)	(2,398)	(9,402)
Total comprehensive income (loss)	$ 2,065	$ 62	$ 6,172	$ (2,727)

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Cash flows from operating activities
Net income	$ 8,570,000	$ 6,675,000
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	7,024,000	6,767,000
Non-cash restructuring and realignment charges	105,000	4,930,000
Amortization of loan costs	84,000	69,000
Stock-based compensation expense	2,297,000	1,138,000
Allowance for excess and obsolete inventory	109,000	431,000
Gain on sale of creosote distribution business		(5,682,000)
Deferred income tax benefit	(1,334,000)	(2,272,000)
Other	11,000	(9,000)
Changes in operating assets and liabilities
Accounts receivable — trade	894,000	1,057,000
Accounts receivable — other	(1,816,000)	(615,000)
Inventories	1,159,000	(319,000)
Other current and noncurrent assets	3,291,000	276,000
Accounts payable	(5,805,000)	(6,357,000)
Accrued liabilities and other	(492,000)	367,000
Net cash provided by operating activities	14,097,000	6,456,000
Cash flows from investing activities
Additions to property, plant and equipment	(6,001,000)	(7,036,000)
Disposals of property, plant and equipment		91,000
Proceeds from sale of creosote distribution business		15,062,000
Net cash provided by (used in) investing activities	(6,001,000)	8,117,000
Cash flows from financing activities
Net payments under revolving credit agreement		(41,100,000)
Principal payments on term loan		(20,000,000)
Borrowings under New Credit Facility		59,100,000
Payments under New Credit Facility	(6,000,000)	(19,000,000)
Tax benefit from stock-based awards	15,000	9,000
Payment of dividends	(703,000)	(700,000)
Net cash used in financing activities	(6,688,000)	(21,691,000)
Effect of exchange rate changes on cash	(25,000)	(1,644,000)
Net increase (decrease) in cash and cash equivalents	1,383,000	(8,762,000)
Cash and cash equivalents at beginning of period	7,517,000	19,252,000
Cash and cash equivalents at end of period	8,900,000	10,490,000
Supplemental disclosures of cash flow information
Cash paid for interest	321,000	983,000
Cash paid for income taxes, net	4,797,000	3,076,000
Supplemental disclosure of non-cash investing activities
Purchase of property, plant and equipment through accounts payable	$ 2,525,000	$ 1,279,000

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jan. 31, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation The consolidated balance sheet as of July 31, 2015, which has been derived from audited consolidated financial statements, and the unaudited condensed consolidated financial statements included herein have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission for interim reporting. As permitted under those requirements, certain footnotes or other financial information that are normally required by generally accepted accounting principles in the United States of America (“GAAP”) have been condensed or omitted. The Company believes that the disclosures made are adequate to make the information not misleading and in the opinion of management reflect all adjustments, including those of a normal recurring nature, that are necessary for a fair presentation of financial position and results of operations for the interim periods presented. The results of operations for the interim periods are not necessarily indicative of results of operations to be expected for the full year. The unaudited condensed consolidated financial statements included herein should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended July 31, 2015. These condensed consolidated financial statements are prepared using certain estimates by management and include the accounts of KMG Chemicals, Inc. and its subsidiaries (collectively, the “Company”). All significant intercompany balances and transactions have been eliminated in consolidation. In November 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2015-17 (Topic 740), Balance Sheet Classification of Deferred Taxes

Acquisitions

Acquisitions	6 Months Ended
	Jan. 31, 2016
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. The 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. As of January 31, 2016, the valuation of the assets acquired and the liabilities assumed is not final. The pro forma impact on consolidated results is immaterial.

Disposition of Business

Disposition of Business	6 Months Ended
	Jan. 31, 2016
Discontinued Operations And Disposal Groups [Abstract]
Disposition of Business	3. Disposition of Business On January 16, 2015, the Company sold its creosote distribution business, part of the wood treating chemicals segment, to Koppers Inc. pursuant to an asset purchase agreement. The transaction closed concurrently with the signing of the asset purchase agreement. Assets that were sold in the transaction included the Company’s United States Environmental Protection Agency (“EPA”) registrations for creosote, creosote inventory, railcar and tank terminal leases and various customer agreements. The adjusted sale price for the assets was approximately $14.9 million. The following table summarizes the cost of assets sold in conjunction with the sale of the creosote distribution business (in thousands): Creosote product registrations $ 5,339 Inventory 3,009 Other assets 168 $ 8,516 The Company allocated goodwill of approximately $662,000 within the wood treating segment to the sale of the creosote distribution business. The Company recognized a gain of $5.4 million on the sale of the creosote distribution business, net of closing and other transaction expenses

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jan. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Share	4. 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. There were approximately 198,000 and 183,000 dilutive shares related to stock-based awards for the three and six months ended January 31, 2016, respectively. There were approximately 90,000 and 64,000 dilutive shares related to stock-based awards for the three and six months ended January 31, 2015, respectively. 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 were 14,000 potentially dilutive securities that were not included for the three months and six months ended January 31, 2016. There were no shares of potentially dilutive securities not included in the computation of diluted earnings per share for the three and six months ended January 31, 2015.

Inventories

Inventories	6 Months Ended
	Jan. 31, 2016
Inventory Disclosure [Abstract]
Inventories	5. Inventories Inventories are summarized in the following table (in thousands): January 31, July 31, 2016 2015 Raw materials $ 7,448 $ 8,723 Work in process 1,155 780 Supplies 580 525 Finished products 31,839 32,535 Less: reserve for inventory obsolescence (631 ) (481 ) Inventories, net $ 40,391 $ 42,082

Property, Plant and Equipment

Property, Plant and Equipment	6 Months Ended
	Jan. 31, 2016
Property Plant And Equipment [Abstract]
Property, Plant and Equipment	6. Property, Plant and Equipment Property, plant and equipment and related accumulated depreciation and amortization are summarized as follows (in thousands): January 31, July 31, 2016 2015 Land $ 13,210 $ 13,257 Buildings and improvements 37,948 38,036 Equipment 84,701 84,273 Leasehold improvements 193 193 136,052 135,759 Less: accumulated depreciation and amortization (66,900 ) (61,936 ) 69,152 73,823 Construction-in-progress 12,142 6,766 Property, plant and equipment, net $ 81,294 $ 80,589

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jan. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	7. Stock-Based Compensation The Company has stock-based incentive plans which are described in more detail in the consolidated financial statements in the Company’s Annual Report on Form 10-K for fiscal year 2015. The Company recognized stock-based compensation costs of approximately $1.4 million and $702,000 for the three months ended January 31, 2016 and 2015, respectively, and $2.3 million and $1.1 million for the six months ended January 31, 2016 and 2015, respectively. The Company also recognized the related tax benefits of $482,000 and $272,000 for the three months ended January 31, 2016 and 2015, respectively, and $816,000 and $433,000 for the six months ended January 31, 2016 and 2015, respectively. Stock-based compensation costs are recorded under selling, general and administrative expenses in the condensed consolidated statements of income. As of January 31, 2016, the unrecognized compensation costs related to stock-based awards was approximately $8.5 million, which is expected to be recognized over a weighted-average period of 2.5 years. Performance Shares On August 1, 2015, there were 244,790 non-vested performance shares outstanding which reflected the maximum number of shares under the awards. No performance share awards vested during the six months ended January 31, 2016. As of January 31, 2016, the non-vested performance-based stock awards consisted of Series 1 awards granted to certain executives and employees in fiscal years 2016, 2015 and 2014 as summarized below reflecting the target number of shares under the awards. Target Expected Shares Series Award Grant Date Measurement Percentage Expected Date of Grant Award Shares Fair Value Period Vesting (1) to Vest Fiscal Year 2016 Awards 1/29/2016 Series 1 57,163 $ 21.80 10/31/2018 Forfeitures (2) — Total Series 1 57,163 100 % 57,163 1/19/2016 Series 3 82,938 $ 20.89 7/31/2020 100 % 82,938 12/11/2015 Series 3 10,000 $ 19.03 7/31/2016 100 % 10,000 12/11/2015 Series 3 4,000 $ 19.03 7/31/2016 100 % 4,000 Fiscal Year 2015 Awards 3/26/2015 Series 1 21,173 $ 25.85 7/31/2017 12/9/2014 Series 1 103,499 $ 17.81 7/31/2017 Forfeitures (2) (1,872 ) Total Series 1 122,800 138 % 168,934 Fiscal Year 2014 Awards 2/25/2014 Series 1 127,315 $ 14.88 7/31/2016 Forfeitures (2) (7,372 ) Total Series 1 119,943 100 % 119,943 (1) The percentage vesting for Series 1 performance share awards is currently estimated at 100%, 138% and 100% of the target award for the fiscal year 2016, 2015 and 2014 awards, respectively. The percentage vesting for Series 3 performance share awards is currently estimated at 100% for the fiscal year 2016 awards. (2) Forfeitures include Series 1 awards that were granted in fiscal years 2016, 2015 and 2014 to certain employees that were forfeited at the termination of their employment. Series 1: For the fiscal year 2016, 2015 and 2014 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 assessed 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 January 31, 2016, and reflects the percentage of shares projected to vest for the respective awards at the end of their measurement periods. For the fiscal year 2016, 2015 and 2014 awards, shares vested may increase to a maximum of 200%, 167% and 150%, respectively, of the target award on achievement of maximum performance objectives. Series 2: None outstanding. Series 3: The table includes certain performance-based awards that are granted to Christopher T. Fraser according to his employment agreement. In fiscal year 2016, Mr. Fraser was awarded (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 the fiscal year, 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 and ending July 31. In fiscal year 2016 Mr. Fraser was also awarded a performance-based Series 3 award for 82,938 shares of common stock (at target) having performance requirements related to cumulative revenue and total stockholder return. The measurement period for the fiscal year 2016 award begins on November 1, 2015 and the award vests one-third (1/3) at July 31, 2018, 2019 and 2020. The shares vested may increase to a maximum of 200% of the target award on achievement of maximum performance objectives. 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 the fiscal year, 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 and ending July 31. The award for fiscal year 2015 was fully vested and 14,000 shares were issued on October 1, 2015 The weighted-average per share grant-date fair value of the target award shares for performance-based awards outstanding was $18.63 and $17.36 at January 31, 2016 and August 1, 2015, respectively. The weighted-average per share grant-date fair value of the target award shares for performance-based awards granted during the six months ended January 31, 2016 and 2015 was $21.06 and $17.67, respectively. The weighted-average per share grant-date fair value of awards forfeited during the six months ended January 31, 2016 and 2015 was $21.90 and $14.88, respectively. Time Based Shares A summary of activity for time-based stock awards for the six months ended January 31, 2016 is presented below: Shares Weighted-Average Grant-Date Fair Value Non-vested on August 1, 2015 82,688 $ 19.66 Granted (1) 153,742 21.74 Vested (2) (22,575 ) 20.41 Forfeited (3) (940 ) 25.85 Non-vested on January 31, 2016 212,915 21.07 (1) Includes 10,075 shares granted to non-employee directors for service during the six month period ended January 31, 2016. Includes 6,500 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 57,167 share awards granted to certain employees and executives which are expected to vest on October 31, 2018. Also includes 80,000 shares granted to Mr. Fraser which vest over a service period of five years beginning on August 1, 2015. The shares are to vest one third (1/3) at the end of years three, four and five of the service period. (2) Includes 10,080 shares granted to non-employee directors for service for the six months ended January 31, 2016. The shares vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 6,500 shares granted to certain employees and executives. The vested amount includes 6,000 shares granted to Mr. Fraser. (3) Forfeitures include Series 1 awards that were granted in fiscal year 2015 to certain employees that were forfeited at the termination of their employment. The total fair value of shares vested during the six months ended January 31, 2016 and 2015 was approximately $694,000 and $414,000, respectively.

Intangible Assets

Intangible Assets	6 Months Ended
	Jan. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	8. Intangible Assets Intangible assets are summarized as follows (in thousands): Number January 31, 2016 Weighted Foreign Average Currency Amortization Original Accumulated Translation Carrying Period Cost Amortization Adjustment Amount Intangible assets subject to amortization: (range of useful life): Electronic chemicals-related contracts (5-8 years) 6.6 $ 2,204 $ (971 ) $ (126 ) $ 1,107 Electronic chemicals-related trademarks and patents (10-15 years) 12.0 117 (83 ) — 34 Electronic chemicals-value of product qualifications (5-15 years) 14.1 14,100 (4,147 ) (431 ) 9,522 Other chemicals-customer relationships (15 years) 15.0 10,291 (515 ) — 9,776 Other chemicals-Other related contracts (5 years) 5.0 152 (23 ) — 129 Total intangible assets subject to amortization 13.8 $ 26,864 $ (5,739 ) $ (557 ) $ 20,568 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 $ 35,026 Number July 31, 2015 Weighted Foreign Average Currency Amortization Original Accumulated Translation Carrying Period Cost Amortization Adjustment 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 Intangible assets subject to amortization are amortized over their estimated useful lives. Amortization expense was approximately $496,000 and $401,000 for the three month periods ended January 31, 2016 and 2015, respectively, and $995,000 and $815,000 for the six month periods ended January 31, 2016 and 2015, respectively.

Dividends

Dividends	6 Months Ended
	Jan. 31, 2016
Dividends [Abstract]
Dividends	9. Dividends Dividends of approximately $352,000 ($0.03 per share) and $351,000 ($0.03 per share) were declared and paid in the second quarter of fiscal years 2016 and 2015, respectively. Dividends of approximately $703,000 ($0.03 per share) and $700,000 ($0.03 per share) were declared and paid in the first six months of fiscal years 2016 and 2015, respectively. A dividend of $0.03 per share was approved by the Company’s board of directors on February 23, 2016 to be paid on March 18, 2016 to shareholders of record on March 11, 2016.

Segment Information

Segment Information	6 Months Ended
	Jan. 31, 2016
Segment Reporting [Abstract]
Segment Information	10. Segment Information The Company has two reportable segments — electronic chemicals and other chemicals. Three Months Ended Six Months Ended January 31, January 31, 2016 2015 2016 2015 (Amounts in thousands) Sales Electronic chemicals $ 62,521 $ 66,595 $ 128,603 $ 132,918 Other chemicals 8,338 13,136 18,906 37,563 Total sales for reportable segments $ 70,859 $ 79,731 $ 147,509 $ 170,481 Depreciation and amortization (1) Electronic chemicals $ 2,849 $ 3,126 $ 5,764 $ 6,328 Other chemicals 286 97 583 193 Other 344 114 677 246 Total consolidated depreciation and amortization $ 3,479 $ 3,337 $ 7,024 $ 6,767 Segment income from operations (2) Electronic chemicals $ 8,470 $ 5,570 $ 15,744 $ 9,691 Other chemicals 2,804 1,595 6,568 4,180 Total segment income from operations $ 11,274 $ 7,165 $ 22,312 $ 13,871 (1) Depreciation and amortization excludes restructuring related depreciation. (2) Segment income from operations includes allocated corporate overhead expenses. Corporate overhead expenses allocated to segment income from operations for the three and six months ended January 31, 2016 and 2015 were as follows: Three Months Ended Six Months Ended January 31, January 31, 2016 2015 2016 2015 (Amounts in thousands) Electronic chemicals $ 2,480 $ 2,999 $ 4,961 $ 5,390 Other chemicals 791 1,173 1,581 2,107 Total corporate overhead expense allocation $ 3,271 $ 4,172 $ 6,542 $ 7,497 A reconciliation of total segment information to consolidated amounts is as follows: Three Months Ended Six Months Ended January 31, January 31, 2016 2015 2016 2015 (Amounts in thousands) Sales Total sales for reportable segments $ 70,859 $ 79,731 $ 147,509 $ 170,481 Other — 31 — 60 Net sales $ 70,859 $ 79,762 $ 147,509 $ 170,541 Segment income from operations Total segment income from operations $ 11,274 $ 7,165 $ 22,312 $ 13,871 Other corporate expense (1) (4,582 ) (1,339 ) (7,704 ) (2,653 ) Restructuring and realignment charges (555 ) (2,659 ) (1,151 ) (5,232 ) Operating income 6,137 3,167 13,457 5,986 Interest expense, net (252 ) (184 ) (404 ) (987 ) Other income (expense), net (Including gain on sale of creosote distribution business) 149 5,551 132 5,523 Income before income taxes $ 6,034 $ 8,534 $ 13,185 $ 10,522 (1) Other corporate expense primarily represents employee stock-based compensation expenses and those expenses associated with the Company’s operation as a public company, such as board compensation, audit expense, fees related to the listing of our stock, and expenses incurred to pursue acquisition opportunities.

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jan. 31, 2016
Debt Disclosure [Abstract]
Long-Term Debt	11. Long-Term Debt The Company’s debt as of January 31, 2016 and July 31, 2015 consisted of the following: January 31, July 31, 2016 2015 (Amounts in thousands) Senior secured debt: Revolving loan facility, maturing on October 9, 2019, variable interest rates based on LIBOR plus 1.0% at January 31, 2016 $ 47,000 $ 53,000 Total debt 47,000 53,000 Current maturities of long-term debt — — Long-term debt, net of current maturities $ 47,000 $ 53,000 On October 9, 2014, the Company entered into a new credit facility (the “Second Restated Credit Facility”). The Second Restated Credit Facility is 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. The Company incurred approximately $666,000 in fees and expenses to enter into the Second Restated Credit Facility. Additionally, the Company paid $288,000 for a make-whole charge for the early repayment of the note purchase agreement. 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. At January 31, 2016, the Company had $47.0 million outstanding under the revolving facility, and an additional $2.7 million was reserved for outstanding letters of credit, with up to an additional $100.3 million of additional borrowing capacity. The amount available under the Second Restated Credit Facility at January 31, 2016 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 January 31, 2016 the Company could draw approximately an additional $96.2 million on its revolving loan. The maturity date for the Second Restated Credit Facility is October 9, 2019. The revolving loan bears interest at a varying rate of the 30-day LIBOR rate plus a margin based on our funded debt to EBITDA. Ratio of Funded Debt to EBITDA Margin Equal to or greater than 3.00 to 1.0 1.875 % Equal to or greater than 2.75 to 1.0, but less than 3.00 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 bear interest at 1.428% as of January 31, 2016. The Company will also incur 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 inventory, accounts receivable, equipment, intangible assets, and real property. The Second Restated Credit Facility has restrictive covenants, including that the Company must maintain a fixed charge coverage ratio of 1.5 to 1.0 or greater, 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 January 31, 2016, the Company was in compliance with all covenants of the Second Restated Credit Facility.

Income Taxes

Income Taxes	6 Months Ended
	Jan. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes Income tax expense for the interim periods was computed using an estimated annual effective income tax rate applied to year-to-date income before income tax expense. In determining the estimated annual effective income tax rate, we analyze various factors, including forecasts of projected annual earnings and the ability to use tax credits and net operating loss carry forwards. The overall effective income tax rate for the three and six month periods ended January 31, 2016 is 34.1% and 35.0%, respectively, including the valuation allowances recorded against the Company’s current operating losses for its Italian subsidiary. For the three and six month periods ended January 31, 2015, the overall effective income tax rate was 35.7% and 36.6%, respectively. Excluding the Italian results and discrete benefits, the estimated annual effective tax rate on ordinary income is 34.5% and 34.3%, respectively, for the three and six month periods ended January 31, 2016. Excluding the Italian results and discrete benefits, for the three and six month periods ended January 31, 2015 the overall effective rate was 35.4% and 35.0%, respectively.

Litigation and Other Contingenc

Litigation and Other Contingencies	6 Months Ended
	Jan. 31, 2016
Commitments And Contingencies Disclosure [Abstract]
Litigation and Other Contingencies	13. 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 January 31, 2016 (at an exchange rate of 1.083 $/€). The Company had a liability for an uncertain tax position for items in the amount of $99,000 and $57,000 as of January 31, 2016 and July 31, 2015, 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 January 31, 2016, is €809,000 (or approximately $877,000 at an exchange rate of 1.083 $/€). 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 (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 site, equal to $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 of 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.

Restructuring and Realignment E

Restructuring and Realignment Events	6 Months Ended
	Jan. 31, 2016
Restructuring And Related Activities [Abstract]
Restructuring and Realignment Events	14. Restructuring and Realignment Events As part of the Company’s global restructuring of its electronic chemicals operations, the Fremont, California manufacturing site acquired in the acquisition from OM Group has been closed, and production has been shifted primarily to the Company’s Hollister, California and Pueblo, Colorado facilities. The Company has closed one of its facilities in Milan, Italy, and shifted some production to facilities in France and the United Kingdom. Accelerated depreciation with respect to the closed facilities has been completed. At January 31, 2016, the accrued liability associated with restructuring and other related charges consisted of the following: Employee Decommissioning Costs and Other Total Accrued liability at August 1, 2015 $ 716 $ 169 $ 17 $ 902 Charges — — — 0 Payments (4 ) (38 ) (6 ) (48 ) Adjustment (3 ) (1 ) — (4 ) Accrued liability at January 31, 2016 $ 709 $ 130 $ 11 $ 850 Total accelerated depreciation related to the closure of the Milan facility for the three months ended October 31, 2015 was approximately $105,000. There was no additional accelerated depreciation in the three months ended January 31, 2016. Total accelerated depreciation related to the closure of the Freemont and Milan facilities was approximately $227,000 and $858,000 for the three and six months ended January 31, 2015, respectively. In October 2014, the Company announced a realignment of its hydrofluoric acid business and subsequently exited the facility operated for the Company by Chemtrade Logistics (“Chemtrade”) in Bay Point, California. Under the manufacturing agreement, the Company is obligated to pay or reimburse Chemtrade for certain costs associated with the cessation of operations at Bay Point, including certain employee costs and the decommissioning, dismantling and removal of the Company’s manufacturing equipment at the site. The asset retirement obligation was initially established in the amount of $3.7 million for decontamination, decommissioning and dismantling at Bay Point. Operations ceased in the third quarter of fiscal year 2015. The changes to the asset retirement obligation associated with realignment during the six months ended January 31, 2016 are as follows: Asset retirement obligation at August 1, 2015 $ 811 Charges 130 Payments (617 ) Asset retirement obligation at January 31, 2016 $ 324 The Company incurred no charges for accelerated depreciation during the three and six month periods ended January 31, 2016. For the three and six month periods ended January 31, 2015, the Company recorded $2.2 million and $4.1 million of accelerated depreciation, respectively. All assets related to Bay Point have been fully depreciated as of July 31, 2015. Additionally, the Company incurred certain employee costs of $130,000 during the three and six months ended January 31, 2016, and $195,000 and $233,000 in employee costs during the three and six months ended January 31, 2015, respectively.

Disposition of Business - Sched

Disposition of Business - Schedule of Cost of Assets Sold (Table)	6 Months Ended
	Jan. 31, 2016
Discontinued Operations And Disposal Groups [Abstract]
Schedule of Cost of Assets Sold	The following table summarizes the cost of assets sold in conjunction with the sale of the creosote distribution business (in thousands): Creosote product registrations $ 5,339 Inventory 3,009 Other assets 168 $ 8,516

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jan. 31, 2016
Inventory Disclosure [Abstract]
Inventories	Inventories are summarized in the following table (in thousands): January 31, July 31, 2016 2015 Raw materials $ 7,448 $ 8,723 Work in process 1,155 780 Supplies 580 525 Finished products 31,839 32,535 Less: reserve for inventory obsolescence (631 ) (481 ) Inventories, net $ 40,391 $ 42,082

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	6 Months Ended
	Jan. 31, 2016
Property Plant And Equipment [Abstract]
Property, Plant, and Equipment and Related Accumulated Depreciation and Amortization	Property, plant and equipment and related accumulated depreciation and amortization are summarized as follows (in thousands): January 31, July 31, 2016 2015 Land $ 13,210 $ 13,257 Buildings and improvements 37,948 38,036 Equipment 84,701 84,273 Leasehold improvements 193 193 136,052 135,759 Less: accumulated depreciation and amortization (66,900 ) (61,936 ) 69,152 73,823 Construction-in-progress 12,142 6,766 Property, plant and equipment, net $ 81,294 $ 80,589

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jan. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Performance Based Stock Awards Granted	Target Expected Shares Series Award Grant Date Measurement Percentage Expected Date of Grant Award Shares Fair Value Period Vesting (1) to Vest Fiscal Year 2016 Awards 1/29/2016 Series 1 57,163 $ 21.80 10/31/2018 Forfeitures (2) — Total Series 1 57,163 100 % 57,163 1/19/2016 Series 3 82,938 $ 20.89 7/31/2020 100 % 82,938 12/11/2015 Series 3 10,000 $ 19.03 7/31/2016 100 % 10,000 12/11/2015 Series 3 4,000 $ 19.03 7/31/2016 100 % 4,000 Fiscal Year 2015 Awards 3/26/2015 Series 1 21,173 $ 25.85 7/31/2017 12/9/2014 Series 1 103,499 $ 17.81 7/31/2017 Forfeitures (2) (1,872 ) Total Series 1 122,800 138 % 168,934 Fiscal Year 2014 Awards 2/25/2014 Series 1 127,315 $ 14.88 7/31/2016 Forfeitures (2) (7,372 ) Total Series 1 119,943 100 % 119,943 (1) The percentage vesting for Series 1 performance share awards is currently estimated at 100%, 138% and 100% of the target award for the fiscal year 2016, 2015 and 2014 awards, respectively. The percentage vesting for Series 3 performance share awards is currently estimated at 100% for the fiscal year 2016 awards. (2) Forfeitures include Series 1 awards that were granted in fiscal years 2016, 2015 and 2014 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 six months ended January 31, 2016 is presented below: Shares Weighted-Average Grant-Date Fair Value Non-vested on August 1, 2015 82,688 $ 19.66 Granted (1) 153,742 21.74 Vested (2) (22,575 ) 20.41 Forfeited (3) (940 ) 25.85 Non-vested on January 31, 2016 212,915 21.07 (1) Includes 10,075 shares granted to non-employee directors for service during the six month period ended January 31, 2016. Includes 6,500 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 57,167 share awards granted to certain employees and executives which are expected to vest on October 31, 2018. Also includes 80,000 shares granted to Mr. Fraser which vest over a service period of five years beginning on August 1, 2015. The shares are to vest one third (1/3) at the end of years three, four and five of the service period. (2) Includes 10,080 shares granted to non-employee directors for service for the six months ended January 31, 2016. The shares vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 6,500 shares granted to certain employees and executives. The vested amount includes 6,000 shares granted to Mr. Fraser. (3) Forfeitures include Series 1 awards that were granted in fiscal year 2015 to certain employees that were forfeited at the termination of their employment.

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
	Jan. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible assets are summarized as follows (in thousands): Number January 31, 2016 Weighted Foreign Average Currency Amortization Original Accumulated Translation Carrying Period Cost Amortization Adjustment Amount Intangible assets subject to amortization: (range of useful life): Electronic chemicals-related contracts (5-8 years) 6.6 $ 2,204 $ (971 ) $ (126 ) $ 1,107 Electronic chemicals-related trademarks and patents (10-15 years) 12.0 117 (83 ) — 34 Electronic chemicals-value of product qualifications (5-15 years) 14.1 14,100 (4,147 ) (431 ) 9,522 Other chemicals-customer relationships (15 years) 15.0 10,291 (515 ) — 9,776 Other chemicals-Other related contracts (5 years) 5.0 152 (23 ) — 129 Total intangible assets subject to amortization 13.8 $ 26,864 $ (5,739 ) $ (557 ) $ 20,568 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 $ 35,026 Number July 31, 2015 Weighted Foreign Average Currency Amortization Original Accumulated Translation Carrying Period Cost Amortization Adjustment 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

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jan. 31, 2016
Segment Reporting [Abstract]
Segment Information	The Company has two reportable segments — electronic chemicals and other chemicals. Three Months Ended Six Months Ended January 31, January 31, 2016 2015 2016 2015 (Amounts in thousands) Sales Electronic chemicals $ 62,521 $ 66,595 $ 128,603 $ 132,918 Other chemicals 8,338 13,136 18,906 37,563 Total sales for reportable segments $ 70,859 $ 79,731 $ 147,509 $ 170,481 Depreciation and amortization (1) Electronic chemicals $ 2,849 $ 3,126 $ 5,764 $ 6,328 Other chemicals 286 97 583 193 Other 344 114 677 246 Total consolidated depreciation and amortization $ 3,479 $ 3,337 $ 7,024 $ 6,767 Segment income from operations (2) Electronic chemicals $ 8,470 $ 5,570 $ 15,744 $ 9,691 Other chemicals 2,804 1,595 6,568 4,180 Total segment income from operations $ 11,274 $ 7,165 $ 22,312 $ 13,871 (1) Depreciation and amortization excludes restructuring related depreciation. (2) Segment income from operations includes allocated corporate overhead expenses.
Overhead Expenses Allocated to Segment Income	Corporate overhead expenses allocated to segment income from operations for the three and six months ended January 31, 2016 and 2015 were as follows: Three Months Ended Six Months Ended January 31, January 31, 2016 2015 2016 2015 (Amounts in thousands) Electronic chemicals $ 2,480 $ 2,999 $ 4,961 $ 5,390 Other chemicals 791 1,173 1,581 2,107 Total corporate overhead expense allocation $ 3,271 $ 4,172 $ 6,542 $ 7,497
Reconciliation of Total Segment to Consolidated Amounts	A reconciliation of total segment information to consolidated amounts is as follows: Three Months Ended Six Months Ended January 31, January 31, 2016 2015 2016 2015 (Amounts in thousands) Sales Total sales for reportable segments $ 70,859 $ 79,731 $ 147,509 $ 170,481 Other — 31 — 60 Net sales $ 70,859 $ 79,762 $ 147,509 $ 170,541 Segment income from operations Total segment income from operations $ 11,274 $ 7,165 $ 22,312 $ 13,871 Other corporate expense (1) (4,582 ) (1,339 ) (7,704 ) (2,653 ) Restructuring and realignment charges (555 ) (2,659 ) (1,151 ) (5,232 ) Operating income 6,137 3,167 13,457 5,986 Interest expense, net (252 ) (184 ) (404 ) (987 ) Other income (expense), net (Including gain on sale of creosote distribution business) 149 5,551 132 5,523 Income before income taxes $ 6,034 $ 8,534 $ 13,185 $ 10,522 (1) Other corporate expense primarily represents employee stock-based compensation expenses and those expenses associated with the Company’s operation as a public company, such as board compensation, audit expense, fees related to the listing of our stock, and expenses incurred to pursue acquisition opportunities.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jan. 31, 2016
Debt Disclosure [Abstract]
Debt	The Company’s debt as of January 31, 2016 and July 31, 2015 consisted of the following: January 31, July 31, 2016 2015 (Amounts in thousands) Senior secured debt: Revolving loan facility, maturing on October 9, 2019, variable interest rates based on LIBOR plus 1.0% at January 31, 2016 $ 47,000 $ 53,000 Total debt 47,000 53,000 Current maturities of long-term debt — — Long-term debt, net of current maturities $ 47,000 $ 53,000
Ratio of Funded Debt to EBITDA	The revolving loan bears interest at a varying rate of the 30-day LIBOR rate plus a margin based on our funded debt to EBITDA. Ratio of Funded Debt to EBITDA Margin Equal to or greater than 3.00 to 1.0 1.875 % Equal to or greater than 2.75 to 1.0, but less than 3.00 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 %

Restructuring and Realignment28

Restructuring and Realignment Events (Tables)	6 Months Ended
	Jan. 31, 2016
Restructuring And Related Activities [Abstract]
Accrued Liability Associated with Restructuring and Other Related Charges	At January 31, 2016, the accrued liability associated with restructuring and other related charges consisted of the following: Employee Decommissioning Costs and Other Total Accrued liability at August 1, 2015 $ 716 $ 169 $ 17 $ 902 Charges — — — 0 Payments (4 ) (38 ) (6 ) (48 ) Adjustment (3 ) (1 ) — (4 ) Accrued liability at January 31, 2016 $ 709 $ 130 $ 11 $ 850
Schedule of Changes in Asset Retirement Obligation Associated with Realignment	The changes to the asset retirement obligation associated with realignment during the six months ended January 31, 2016 are as follows: Asset retirement obligation at August 1, 2015 $ 811 Charges 130 Payments (617 ) Asset retirement obligation at January 31, 2016 $ 324

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail)	6 Months Ended
	Jan. 31, 2016
Valves Incorporated of Texas
Business Acquisition [Line Items]
Acquisition date	May 1, 2015

Disposition of Business - Addit

Disposition of Business - Additional Information (Detail) - USD ($)	6 Months Ended
	Jan. 31, 2016	Jan. 16, 2015
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups [Line Items]
Sale price for the assets		$ 14,900,000
Creosote Distribution Business
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups [Line Items]
Sale price for the assets	$ 8,516,000
Goodwill written off on sale of business	662,000
Gain on sale of business	$ 5,400,000

Disposition of Business - Sch31

Disposition of Business - Schedule of Cost of Assets Sold (Detail) - USD ($) $ in Thousands	Jan. 31, 2016	Jan. 16, 2015
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups [Line Items]
Total		$ 14,900
Creosote Distribution Business
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups [Line Items]
Creosote product registrations	$ 5,339
Inventory	3,009
Other assets	168
Total	$ 8,516

Earnings per Share - Additional

Earnings per Share - Additional Information (Detail) - shares	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Earnings Per Share [Abstract]
Number of dilutive shares related to stock-based awards	198,000	90,000	183,000	64,000
Number of shares potentially dilutive securities not included in the computation of diluted earnings per share	14,000	0	14,000	0

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Jan. 31, 2016	Jul. 31, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 7,448	$ 8,723
Work in process	1,155	780
Supplies	580	525
Finished products	31,839	32,535
Less: reserve for inventory obsolescence	(631)	(481)
Inventories, net	$ 40,391	$ 42,082

Property, Plant, and Equipment

Property, Plant, and Equipment and Related Accumulated Depreciation and Amortization (Detail) - USD ($) $ in Thousands	Jan. 31, 2016	Jul. 31, 2015
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 136,052	$ 135,759
Less: accumulated depreciation and amortization	(66,900)	(61,936)
Property plant and equipment excluding construction in progress	69,152	73,823
Construction-in-progress	12,142	6,766
Property, plant and equipment, net	81,294	80,589
Land
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	13,210	13,257
Buildings and improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	37,948	38,036
Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	84,701	84,273
Leasehold improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 193	$ 193

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($)

Jan. 29, 2016

Jan. 19, 2016

Dec. 11, 2015

Oct. 01, 2015

Mar. 26, 2015

Dec. 09, 2014

Feb. 25, 2014

Jan. 31, 2016

Oct. 31, 2015

Jan. 31, 2015

Jan. 31, 2016

Jan. 31, 2015

Jul. 31, 2015

Jul. 31, 2014

Aug. 01, 2015

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

Stock-based compensation expense

$ 1,400,000

$ 702,000

$ 2,297,000

$ 1,138,000

Share based compensation, related tax benefits

482,000

$ 272,000

816,000

$ 433,000

Unrecognized compensation costs related to outstanding stock awards

$ 8,500,000

$ 8,500,000

Weighted average period for recognition of compensation cost

2 years 6 months

Series Award One

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

Maximum award, as a percentage of target award.

200.00%

167.00%

150.00%

Series Award Three

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

Maximum award, as a percentage of target award.

200.00%

Performance Shares

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

Target number of shares outstanding, non vested

244,790

Awards vested

0

Target Award Shares

57,163

[1]

122,800

119,943

Shares award vesting period

1 year

1 year

Weighted average per share grant date fair value

$ 18.63

$ 18.63

$ 17.36

Grant Date Fair Value

21.06

$ 17.67

Weighted average grant date fair value of performance share awards forfeited

$ 21.90

$ 14.88

Performance Shares | Christopher T. Fraser

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

Number of fully vested shares issued

14,000

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

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

Target Award Shares

10,000

10,000

Performance Shares | Christopher T. Fraser | Certain Organizational Objectives | Minimum

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

Target Award Shares

4,000

4,000

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

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

Target Award Shares

82,938

Performance Shares | Series Award One

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

Target Award Shares

57,163

21,173

103,499

127,315

Grant Date Fair Value

$ 21.80

$ 25.85

$ 17.81

$ 14.88

Performance Shares | Series Award Three

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

Target Award Shares

82,938

Grant Date Fair Value

$ 20.89

$ 19.03

Performance Shares | Series Award Three | Maximum

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

Target Award Shares

10,000

Performance Shares | Series Award Three | Minimum

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

Target Award Shares

4,000

Time Based Shares

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

Target number of shares outstanding, non vested

212,915

212,915

82,688

Awards vested

[2]

22,575

Target Award Shares

[3]

153,742

Weighted average per share grant date fair value

$ 21.07

$ 21.07

$ 19.66

Grant Date Fair Value

[3]

21.74

Weighted average grant date fair value of performance share awards forfeited

[4]

$ 25.85

Total fair value of shares vested

$ 694,000

$ 414,000

Time Based Shares | Christopher T. Fraser

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

Target Award Shares

80,000

Shares award vesting period

5 years

[1]

Forfeitures include Series 1 awards that were granted in fiscal years 2016, 2015 and 2014 to certain employees that were forfeited at the termination of their employment.

[2]

Includes 10,080 shares granted to non-employee directors for service for the six months ended January 31, 2016. The shares vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 6,500 shares granted to certain employees and executives. The vested amount includes 6,000 shares granted to Mr. Fraser.

[3]

Includes 10,075 shares granted to non-employee directors for service during the six month period ended January 31, 2016. Includes 6,500 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 57,167 share awards granted to certain employees and executives which are expected to vest on October 31, 2018. Also includes 80,000 shares granted to Mr. Fraser which vest over a service period of five years beginning on August 1, 2015. The shares are to vest one third (1/3) at the end of years three, four and five of the service period.

[4]

Forfeitures include Series 1 awards that were granted in fiscal year 2015 to certain employees that were forfeited at the termination of their employment.

Summary of Performance Based St

Summary of Performance Based Stock Awards (Detail) - $ / shares

Jan. 29, 2016

Jan. 19, 2016

Dec. 11, 2015

Mar. 26, 2015

Dec. 09, 2014

Feb. 25, 2014

Jan. 31, 2016

Jan. 31, 2015

Jul. 31, 2015

Jul. 31, 2014

Series Award One

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

Expected Percentage of Vesting

100.00%

138.00%

100.00%

Series Award Three

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

Expected Percentage of Vesting

100.00%

Performance Shares

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

Target Award Shares

57,163

[1]

122,800

119,943

Target Award Shares, forfeited

[1]

(1,872)

(7,372)

Grant Date Fair Value

$ 21.06

$ 17.67

Expected Percentage of Vesting

[2]

100.00%

Shares Expected to Vest

82,938

57,163

168,934

119,943

Performance Shares | Maximum

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

Shares Expected to Vest

10,000

Performance Shares | Minimum

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

Shares Expected to Vest

4,000

Performance Shares | Series Award One

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

Grant Dates

Jan. 29, 2016

Mar. 26, 2015

Dec. 9, 2014

Feb. 25, 2014

Target Award Shares

57,163

21,173

103,499

127,315

Grant Date Fair Value

$ 21.80

$ 25.85

$ 17.81

$ 14.88

Measurement Period Ending

Oct. 31, 2018

Jul. 31, 2017

Jul. 31, 2017

Jul. 31, 2016

Expected Percentage of Vesting

[2]

138.00%

100.00%

Performance Shares | Series Award Three

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

Grant Dates

Jan. 19, 2016

Dec. 11, 2015

Target Award Shares

82,938

Grant Date Fair Value

$ 20.89

$ 19.03

Measurement Period Ending

Jul. 31, 2020

Jul. 31, 2016

Expected Percentage of Vesting

[2]

100.00%

100.00%

Performance Shares | Series Award Three | Maximum

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

Target Award Shares

10,000

Performance Shares | Series Award Three | Minimum

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 2016, 2015 and 2014 to certain employees that were forfeited at the termination of their employment.

[2]

The percentage vesting for Series 1 performance share awards is currently estimated at 100%, 138% and 100% of the target award for the fiscal year 2016, 2015 and 2014 awards, respectively. The percentage vesting for Series 3 performance share awards is currently estimated at 100% for the fiscal year 2016 awards.

Summary of Performance Based 37

Summary of Performance Based Stock Awards (Parenthetical) (Detail)	6 Months Ended	12 Months Ended
	Jan. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Series Award One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected Percentage of Vesting	100.00%	138.00%	100.00%
Series Award Three
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected Percentage of Vesting	100.00%

Summary of Activity for Time-Ba

Summary of Activity for Time-Based Stock Awards (Detail) - Time Based Shares	6 Months Ended
	Jan. 31, 2016$ / sharesshares
Non-vested Shares
Granted | shares	153,742	[1]
Vested | shares	(22,575)	[2]
Target Award Shares, forfeited | shares	(940)	[3]
Non-vested on January 31, 2016 | shares	212,915
Weighted-Average Grant-Date Fair Value
Granted | $ / shares	$ 21.74	[1]
Vested | $ / shares	20.41	[2]
Weighted average grant date fair value of performance share awards forfeited | $ / shares	25.85	[3]
Non-vested on January 31, 2016 | $ / shares	$ 21.07
[1]	Includes 10,075 shares granted to non-employee directors for service during the six month period ended January 31, 2016. Includes 6,500 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 57,167 share awards granted to certain employees and executives which are expected to vest on October 31, 2018. Also includes 80,000 shares granted to Mr. Fraser which vest over a service period of five years beginning on August 1, 2015. The shares are to vest one third (1/3) at the end of years three, four and five of the service period.
[2]	Includes 10,080 shares granted to non-employee directors for service for the six months ended January 31, 2016. The shares vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 6,500 shares granted to certain employees and executives. The vested amount includes 6,000 shares granted to Mr. Fraser.
[3]	Forfeitures include Series 1 awards that were granted in fiscal year 2015 to certain employees that were forfeited at the termination of their employment.

Summary of Activity for Time-39

Summary of Activity for Time-Based Stock Awards (Parenthetical) (Detail)	6 Months Ended
	Jan. 31, 2016shares
Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards granted	6,500
Employees and Executives
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards granted	57,167
Time based stock awards Vested	6,500
Christopher T. Fraser
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock awards granted, vesting period, description	The shares are to vest one third (1/3) at the end of years three, four and five of the service period.
Time Based Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards granted	153,742	[1]
Time based stock awards Vested	22,575	[2]
Time Based Shares | Non-Employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards granted	10,075
Time Based Shares | Christopher T. Fraser
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards granted	80,000
Stock awards granted, vesting period	5 years
Time Based Awards | Non-Employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards Vested	10,080
Time Based Awards | Christopher T. Fraser
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Time based stock awards Vested	6,000
[1]	Includes 10,075 shares granted to non-employee directors for service during the six month period ended January 31, 2016. Includes 6,500 share awards granted to certain employees vesting over one or two years from the date of grant. Includes 57,167 share awards granted to certain employees and executives which are expected to vest on October 31, 2018. Also includes 80,000 shares granted to Mr. Fraser which vest over a service period of five years beginning on August 1, 2015. The shares are to vest one third (1/3) at the end of years three, four and five of the service period.
[2]	Includes 10,080 shares granted to non-employee directors for service for the six months ended January 31, 2016. The shares vest on the date of grant, and the Company recognizes compensation expense related to the awards over the respective service periods in accordance with GAAP. Includes 6,500 shares granted to certain employees and executives. The vested amount includes 6,000 shares granted to Mr. Fraser.

Intangible Assets (Detail)

Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jan. 31, 2016	Jul. 31, 2015
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	13 years 9 months 18 days	13 years 9 months 18 days
Original Cost	$ 26,864	$ 26,864
Accumulated Amortization	(5,739)	(4,745)
Foreign Currency Translation Adjustment	(557)	(17)
Carrying Amount	20,568	22,102
Total intangible assets not subject to amortization	14,458	14,458
Total intangible assets, net	35,026	36,560
Other chemicals-penta product registrations
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization	8,765	8,765
Other chemicals-related trade name and trademark
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization	2,885	2,885
Other chemicals-proprietary manufacturing process
Finite Lived Intangible Assets [Line Items]
Total intangible assets not subject to amortization	$ 2,808	$ 2,808
Electronic chemicals-related contracts
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	6 years 7 months 6 days	6 years 7 months 6 days
Original Cost	$ 2,204	$ 2,204
Accumulated Amortization	(971)	(839)
Foreign Currency Translation Adjustment	(126)	(87)
Carrying Amount	$ 1,107	$ 1,278
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	(83)	(77)
Carrying Amount	$ 34	$ 40
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	(4,147)	(3,649)
Foreign Currency Translation Adjustment	(431)	70
Carrying Amount	$ 9,522	$ 10,521
Other chemicals-customer relationships
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	15 years	15 years
Original Cost	$ 10,291	$ 10,291
Accumulated Amortization	(515)	(172)
Carrying Amount	$ 9,776	$ 10,119
Other chemicals-other related contracts
Finite Lived Intangible Assets [Line Items]
Number of Years Weighted Average Amortization Period	5 years	5 years
Original Cost	$ 152	$ 152
Accumulated Amortization	(23)	(8)
Carrying Amount	$ 129	$ 144

Intangible Assets (Parenthetica

Intangible Assets (Parenthetical) (Detail)	6 Months Ended	12 Months Ended
	Jan. 31, 2016	Jul. 31, 2015
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 | 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 ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 496	$ 401	$ 995	$ 815

Dividends - Additional Informat

Dividends - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015	Feb. 23, 2016
Dividends Payable [Line Items]
Dividend paid	$ 352,000	$ 351,000	$ 703,000	$ 700,000
Dividend per share	$ 0.03	$ 0.03	$ 0.03	$ 0.03
Dividends payable declared date	Feb. 23, 2016
Dividends payable payment date	Mar. 18, 2016
Dividends payable record date	Mar. 11, 2016
Subsequent Event
Dividends Payable [Line Items]
Dividends payable amount per share					$ 0.03

Segment Information - Additiona

Segment Information - Additional Information (Detail)	6 Months Ended
	Jan. 31, 2016Segment
Segment Reporting [Abstract]
Number of reportable segments	2

Segment Information (Detail)

Segment Information (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Segment Reporting Information [Line Items]
Total consolidated sales		$ 70,859	$ 79,762	$ 147,509	$ 170,541
Total consolidated depreciation and amortization				7,024	6,767
Total consolidated income from operations		6,137	3,167	13,457	5,986
Operating Segments
Segment Reporting Information [Line Items]
Total consolidated sales		70,859	79,731	147,509	170,481
Total consolidated depreciation and amortization	[1]	3,479	3,337	7,024	6,767
Total consolidated income from operations	[2]	11,274	7,165	22,312	13,871
Operating Segments | Electronic Chemicals
Segment Reporting Information [Line Items]
Total consolidated sales		62,521	66,595	128,603	132,918
Total consolidated depreciation and amortization	[1]	2,849	3,126	5,764	6,328
Total consolidated income from operations	[2]	8,470	5,570	15,744	9,691
Operating Segments | Other Chemicals
Segment Reporting Information [Line Items]
Total consolidated sales		8,338	13,136	18,906	37,563
Total consolidated depreciation and amortization	[1]	286	97	583	193
Total consolidated income from operations	[2]	2,804	1,595	6,568	4,180
Other
Segment Reporting Information [Line Items]
Total consolidated sales			31		60
Total consolidated depreciation and amortization	[1]	$ 344	$ 114	$ 677	$ 246
[1]	Depreciation and amortization excludes restructuring related depreciation.
[2]	Segment income from operations includes allocated corporate overhead expenses.

Overhead Expenses Allocated to

Overhead Expenses Allocated to Segment Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Segment Reporting Information [Line Items]
Total corporate overhead expense allocation	$ 3,271	$ 4,172	$ 6,542	$ 7,497
Operating Segments | Electronic Chemicals
Segment Reporting Information [Line Items]
Total corporate overhead expense allocation	2,480	2,999	4,961	5,390
Operating Segments | Other Chemicals
Segment Reporting Information [Line Items]
Total corporate overhead expense allocation	$ 791	$ 1,173	$ 1,581	$ 2,107

Reconciliation of Total Segment

Reconciliation of Total Segment to Consolidated Amounts (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Segment Reporting Information [Line Items]
Net sales		$ 70,859	$ 79,762	$ 147,509	$ 170,541
Total segment income from operations		6,137	3,167	13,457	5,986
Other corporate expense	[1]	(4,582)	(1,339)	(7,704)	(2,653)
Restructuring and realignment charges		(555)	(2,659)	(1,151)	(5,232)
Interest expense, net		(252)	(184)	(404)	(987)
Other income (expense), net (Including gain on sale of creosote distribution business)		149	5,551	132	5,523
Income before income taxes		6,034	8,534	13,185	10,522
Operating Segments
Segment Reporting Information [Line Items]
Net sales		70,859	79,731	147,509	170,481
Total segment income from operations	[2]	$ 11,274	7,165	$ 22,312	13,871
Other
Segment Reporting Information [Line Items]
Net sales			$ 31		$ 60
[1]	Other corporate expense primarily represents employee stock-based compensation expenses and those expenses associated with the Company’s operation as a public company, such as board compensation, audit expense, fees related to the listing of our stock, and expenses incurred to pursue acquisition opportunities.
[2]	Segment income from operations includes allocated corporate overhead expenses.

Debt (Detail)

Debt (Detail) - USD ($) $ in Thousands	Jan. 31, 2016	Jul. 31, 2015
Debt Instrument [Line Items]
Total debt	$ 47,000	$ 53,000
Long-term debt, net of current maturities	47,000	53,000
Senior Secured Debt | Revolving Loan Facility | Debt instrument, maturing on October 9, 2019
Debt Instrument [Line Items]
Total debt	$ 47,000	$ 53,000

Debt (Parenthetical) (Detail)

Debt (Parenthetical) (Detail) - Senior Secured Debt - Revolving Loan Facility - Debt instrument, maturing on October 9, 2019	6 Months Ended
	Jan. 31, 2016
Debt Instrument [Line Items]
Loan maturity date	Oct. 9, 2019
London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Variable interest rate	1.00%

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)	Oct. 09, 2014	Jan. 31, 2016	Jan. 31, 2015
Debt Instrument [Line Items]
Repayments of secured debt			$ 20,000,000
Line of credit facility, outstanding	$ 38,000,000
Fixed charge coverage ratio		150.00%
Ratio of funded debt to EBITDA maximum		325.00%
Current ratio		150.00%
Ratio of funded debt to EBITDA maximum, step-up during an acquisition period with lender's consent		350.00%
Revolving Loan Facility
Debt Instrument [Line Items]
Debt instrument variable rate		1.428%
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%
Note Purchase Agreement
Debt Instrument [Line Items]
Repayments of secured debt	20,000,000
Fees and expenses to the second restated credit facility	666,000
Penalty for the early repayment of the note	288,000
Second Restated Credit Facility | Revolving Loan Facility | Senior Secured Debt
Debt Instrument [Line Items]
Maximum amount of revolving facility	150,000,000
Amount of cash available under contractual agreement with lender's approval	$ 100,000,000
Amount available under revolving facility before loan covenant restriction		$ 100,300,000
Line of credit facility, outstanding		47,000,000
Letters of credit outstanding amount		$ 2,700,000
Loan facility maturity date		Oct. 9, 2019
Amount available under revolving facility		$ 96,200,000

Ratio of Funded Debt to Ebitda

Ratio of Funded Debt to Ebitda (Detail)	6 Months Ended
	Jan. 31, 2016
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 Ebitd52

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

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Income Tax Contingency [Line Items]
Effective income tax rate	34.10%	35.70%	35.00%	36.60%
Effective Income Tax Rate Excluding Restructuring Charges And Operational Results In Italy
Income Tax Contingency [Line Items]
Effective income tax rate	34.50%	35.40%	34.30%	35.00%

Litigation and Other Continge54

Litigation and Other Contingencies - Additional Information (Detail)	Jul. 31, 2012USD ($)	Apr. 30, 2015USD ($)	Jan. 31, 2016USD ($)Case$ / €	Jan. 31, 2016EUR (€)Case	Jul. 31, 2015USD ($)
Commitments And Contingencies [Line Items]
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
Tax Assessment Pertaining to the 3 Year Period Ended July 31, 2011
Commitments And Contingencies [Line Items]
Foreign currency exchange rate, translation | $ / €			1.083
Liability for uncertain tax positions in Italy			$ 99,000		$ 57,000
Tax Assessment December Two Thousand And Seven
Commitments And Contingencies [Line Items]
Foreign currency exchange rate, translation | $ / €			1.083
Foreign
Commitments And Contingencies [Line Items]
Number of cases contested by subsidiary in the Provincial Tax Court in Milan, Italy | Case			2	2
Proposed adjustment from taxing authorities resulting additional income tax, interest and penalties			$ 877,000	€ 809,000
Foreign | Tax Assessment Pertaining to the 3 Year Period Ended July 31, 2011
Commitments And Contingencies [Line Items]
Proposed adjustment from taxing authorities resulting additional income tax, interest and penalties			$ 2,000,000	€ 1,800,000

Restructuring and Realignment55

Restructuring and Realignment Events - Accrued Liability Associated with Restructuring and Other Related Charges (Detail) $ in Thousands	6 Months Ended
	Jan. 31, 2016USD ($)
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	$ 902
Charges	0
Payments	(48)
Adjustment	(4)
Accrued liability, Ending balance	850
Employee costs
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	716
Payments	(4)
Adjustment	(3)
Accrued liability, Ending balance	709
Decommissioning and Environmental
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	169
Payments	(38)
Adjustment	(1)
Accrued liability, Ending balance	130
Other
Restructuring Cost And Reserve [Line Items]
Accrued liability, Beginning balance	17
Payments	(6)
Accrued liability, Ending balance	$ 11

Restructuring and Realignment56

Restructuring and Realignment Events - Additional Information (Detail) - USD ($)	3 Months Ended			6 Months Ended
	Jan. 31, 2016	Oct. 31, 2015	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015	Jul. 31, 2015	Apr. 30, 2015
Restructuring Cost And Reserve [Line Items]
Asset retirement obligation	$ 324,000			$ 324,000		$ 811,000
Milan Facility
Restructuring Cost And Reserve [Line Items]
Accelerated depreciation	0	$ 105,000
Fremont And Milan Facilities
Restructuring Cost And Reserve [Line Items]
Accelerated depreciation			$ 227,000		$ 858,000
Bay Point Facility
Restructuring Cost And Reserve [Line Items]
Asset retirement obligation							$ 3,700,000
Hydrofluoric Acid Business
Restructuring Cost And Reserve [Line Items]
Accelerated depreciation	0		2,200,000	0	4,100,000
Severance Costs	$ 130,000		$ 195,000	$ 130,000	$ 233,000

Restructuring and Realignment57

Restructuring and Realignment Events - Schedule of Changes in Asset Retirement Obligation Associated with Realignment (Detail) $ in Thousands	6 Months Ended
	Jan. 31, 2016USD ($)
Restructuring And Related Activities [Abstract]
Asset retirement obligation at August 1, 2015	$ 811
Charges	130
Payments	(617)
Asset retirement obligation at January 31, 2016	$ 324