HEICO (HEI) 10-Q 1 Mar 18 2018 Q1 Quarterly report Financial data

DOCUMENT AND ENTITY INFORMATION

DOCUMENT AND ENTITY INFORMATION - $ / shares	3 Months Ended
	Jan. 31, 2018	Feb. 27, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jan. 31, 2018
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2,018
Entity Information [Line Items]
Entity Registrant Name	HEICO CORPORATION
Address	3000 Taft Street, Hollywood, Florida
State	Florida
Zip Code	33,021
Entity Central Index Key	46,619
Entity Tax Identification Number	650,341,002
Current Fiscal Year End Date	--10-31
Entity Filer Category	Large Accelerated Filer
Trading Symbol	hei
Heico Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		42,227,721
Entity Common Stock Par Value	$ 0.01
Common Class A [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		63,477,941
Entity Common Stock Par Value	$ 0.01

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Current assets:
Cash and cash equivalents	$ 65,688	$ 52,066
Accounts receivable, net	210,278	222,456
Inventories, net	367,395	343,628
Prepaid expenses and other current assets	19,071	13,742
Total current assets	662,432	631,892
Property, plant and equipment, net	133,115	129,883
Goodwill	1,090,864	1,081,306
Intangible assets, net	530,987	538,081
Other assets	153,044	131,269
Total assets	2,570,442	2,512,431
Current liabilities:
Current maturities of long-term debt	485	451
Trade accounts payable	81,129	89,724
Accrued expenses and other current liabilities	132,570	147,612
Income taxes payable	14,872	11,650
Total current liabilities	229,056	249,437
Long-term debt, net of current maturities	668,527	673,528
Deferred income taxes	42,526	59,026
Other long-term liabilities	167,964	151,025
Total liabilities	1,108,073	1,133,016
Commitments and contingencies
Redeemable noncontrolling interests	132,355	131,123
Shareholders' equity:
Common Stock	422	338
Capital in excess of par value	329,908	326,544
Deferred compensation obligation	3,118	3,118
HEICO stock held by irrevocable trust	(3,118)	(3,118)
Accumulated other comprehensive loss	4,417	(10,556)
Retained earnings	904,030	844,247
Total HEICO shareholders' equity	1,239,412	1,161,080
Noncontrolling interests	90,602	87,212
Total shareholders' equity	1,330,014	1,248,292
Total liabilities and equity	2,570,442	2,512,431
Class A Common Stock [Member]
Shareholders' equity:
Common Stock	$ 635	$ 507

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED [PARENTHETICAL] - $ / shares shares in Thousands	Jan. 31, 2018	Oct. 31, 2017
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	75,000	75,000
Common stock, shares issued	42,228	42,221
Common stock, shares outstanding	42,228	42,221
Class A Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	75,000	75,000
Common stock, shares issued	63,455	63,381
Common stock, shares outstanding	63,455	63,381

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - UNAUDITED - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Net sales	$ 404,410	$ 343,432
Operating costs and expenses:
Cost of sales	249,619	218,015
Selling, general and administrative expenses	75,231	60,867
Total operating costs and expenses	324,850	278,882
Operating income	79,560	64,550
Interest expense	(4,725)	(1,969)
Other income	360	484
Income before income taxes and noncontrolling interests	75,195	63,065
Income tax expense	3,500	16,800
Net income from consolidated operations	71,695	46,265
Less: Net income attributable to noncontrolling interests	6,543	5,338
Net income attributable to HEICO	$ 65,152	$ 40,927
Net income per share attributable to HEICO shareholders:
Basic (in dollars per share)	$ 0.62	$ 0.39
Diluted (in dollars per share)	$ 0.60	$ 0.38
Weighted average number of common shares outstanding:
Basic (in shares)	105,639	105,178
Diluted (in shares)	109,112	108,005
Cash dividends per share (in dollars per share)	$ 0.070	$ 0.058

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Net income from consolidated operations	$ 71,695	$ 46,265
Other comprehensive income (loss):
Foreign currency translation adjustments	15,963	(1,524)
Amortization of unrealized loss on defined benefit pension plan, net of tax	4	7
Total other comprehensive income (loss)	15,967	(1,517)
Comprehensive income from consolidated operations	87,662	44,748
Less: Comprehensive income attributable to noncontrolling interests	6,543	5,338
Less: Foreign currency translation adjustments attributable to noncontrolling interests	994	(296)
Comprehensive income attributable to noncontrolling interests	7,537	5,042
Comprehensive income attributable to HEICO	$ 80,125	$ 39,706

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME - UNAUDITED - USD ($) $ in Thousands	Total	Redeemable Noncontrolling Interests [Member]	Common Stock [Member]	Common Stock [Member]Class A Common Stock [Member]	Capital In Excess Of Par Value [Member]	Deferred Compensation Obligation [Member]	HEICO Stock Held By Irrevocable Trust [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total Shareholders Equity [Member]
Starting Balance at Oct. 31, 2016			$ 270	$ 403	$ 306,328	$ 2,460	$ (2,460)	$ (25,326)	$ 681,704	$ 84,326	$ 1,047,705
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 39,706							(1,221)	40,927
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	5,042	$ 2,294								2,748
Comprehensive income	44,748										42,454
Cash dividends									(6,059)		(6,059)
Issuance of common stock to Savings and Investment Plan					893						893
Share-based compensation expense					1,451						1,451
Proceeds from stock option exercises				1							1,230
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital					1,229
Distributions to noncontrolling interests		(1,712)								(274)	(274)
Adjustments to redemption amount of redeemable noncontrolling interests		(1,192)							1,192		1,192
Deferred compensation obligation						(140)
Stock Issued During Period Value Deferred Compensation Obligation							140
Ending Balance at Jan. 31, 2017			270	404	309,901	2,320	(2,320)	(26,547)	717,764	86,800	1,088,592
Starting Balance, Redeemable Noncontrolling Interests at Oct. 31, 2016		99,512
Increase (Decrease) in Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	5,042	2,294								2,748
Distributions to noncontrolling interests		(1,712)								(274)	(274)
Adjustments to redemption amount of redeemable noncontrolling interests		(1,192)							1,192		1,192
Ending Balance, Redeemable Noncontrolling Interests at Jan. 31, 2017		98,902
Starting Balance at Oct. 31, 2017	1,248,292		338	507	326,544	3,118	(3,118)	(10,556)	844,247	87,212	1,248,292
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	80,125							14,973	65,152
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	7,537	3,952								3,585
Comprehensive income	87,662										83,710
Cash dividends									(7,395)		(7,395)
Stock Issued During Period, Value, Stock Dividend			84	127
Adjustments to Additional Paid in Capital, Stock Split					(211)
Issuance of common stock to Savings and Investment Plan					980						980
Share-based compensation expense					2,165						2,165
Proceeds from stock option exercises				1							1,425
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital					1,424
Distributions to noncontrolling interests		(1,688)								(194)	(194)
Adjustments to redemption amount of redeemable noncontrolling interests		(2,026)							2,026		2,026
Other										(1)	995
Adjustments to Additional Paid in Capital, Other	(994)
Ending Balance at Jan. 31, 2018	1,330,014		$ 422	$ 635	$ 329,908	$ 3,118	$ (3,118)	$ 4,417	904,030	90,602	1,330,014
Starting Balance, Redeemable Noncontrolling Interests at Oct. 31, 2017	131,123	131,123
Increase (Decrease) in Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	7,537	3,952								3,585
Distributions to noncontrolling interests		(1,688)								$ (194)	(194)
Adjustments to redemption amount of redeemable noncontrolling interests		(2,026)							$ 2,026		$ 2,026
Temporary Equity, Other Changes	994
Ending Balance, Redeemable Noncontrolling Interests at Jan. 31, 2018	$ 132,355	$ 132,355

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME - UNAUDITED [PARENTHETICAL] - $ / shares	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Cash dividends per share (in dollars per share)	$ 0.070	$ 0.058

CONDENSED CONSOLIDATED STATEME8

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Operating Activities:
Net income from consolidated operations	$ 71,695	$ 46,265
Adjustments to reconcile net income from consolidated operations to net cash provided by (used in) operating activities:
Depreciation and amortization	19,024	15,248
Employer contributions to HEICO Savings and Investment Plan	1,860	1,714
Share-based compensation expense	2,168	1,451
Change in value of contingent consideration	(3,195)	537
Foreign currency transaction adjustments, net	75	(956)
Deferred income tax provision (benefit)	(17,292)	(346)
Changes in operating assets and liabilities, net of acquisitions:
Change in accounts receivable	14,463	25,998
Change in inventories	(18,301)	(14,989)
Change in prepaid expenses and other current assets	(5,403)	(1,563)
Change in trade accounts payable	(9,734)	(6,322)
Change in accrued expenses and other current liabilities	(18,477)	(18,908)
Change in income taxes payable	7,630	7,230
Other	492	616
Net cash provided by operating activities	45,005	55,975
Investing Activities:
Capital expenditures	(7,577)	(6,422)
Acquisitions, net of cash acquired	(6,126)	0
Other	(2,790)	419
Net cash used in investing activities	(16,493)	(6,003)
Financing Activities:
Payments on revolving credit facility	(5,000)	(40,000)
Cash dividends paid	(7,395)	(6,059)
Payments of Loan Costs	(4,067)
Distributions to noncontrolling interests	(1,882)	(1,986)
Proceeds from stock option exercises	1,425	1,230
Payment of Contingent Consideration	(300)
Other	(114)	(108)
Net cash (used in) provided by financing activities	(17,333)	(46,923)
Effect of exchange rate changes on cash	2,443	(99)
Net (decrease) increase in cash and cash equivalents	13,622	2,950
Cash and cash equivalents at beginning of year	52,066	42,955
Cash and cash equivalents at end of period	$ 65,688	$ 45,905

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Jan. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies [Text Block]	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying unaudited condensed consolidated financial statements of HEICO Corporation and its subsidiaries (collectively, “HEICO,” or the “Company”) have been prepared in conformity with accounting principles generally accepted in the United States of America for interim financial information and in accordance with the instructions to Form 10-Q. Therefore, the condensed consolidated financial statements do not include all information and footnotes normally included in annual consolidated financial statements and 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 October 31, 2017. The October 31, 2017 Condensed Consolidated Balance Sheet has been derived from the Company’s audited consolidated financial statements. In the opinion of management, the unaudited condensed consolidated financial statements contain all adjustments (consisting principally of normal recurring accruals) necessary for a fair presentation of the condensed consolidated balance sheets, statements of operations, statements of comprehensive income, statements of shareholders' equity and statements of cash flows for such interim periods presented. The results of operations for the three months ended January 31, 2018 are not necessarily indicative of the results which may be expected for the entire fiscal year. The Company has two operating segments: the Flight Support Group (“FSG”), consisting of HEICO Aerospace Holdings Corp. and HEICO Flight Support Corp. and their respective subsidiaries; and the Electronic Technologies Group (“ETG”), consisting of HEICO Electronic Technologies Corp. (“HEICO Electronic”) and its subsidiaries. Stock Splits In March 2017, the Company's Board of Directors declared a 5-for-4 stock split on both classes of the Company's common stock. The stock split was effected as of April 19, 2017 in the form of a 25% stock dividend distributed to shareholders of record as of April 7, 2017. In December 2017, the Company's Board of Directors declared a 5-for-4 stock split on both classes of the Company's common stock. The stock split was effected as of January 18, 2018 in the form of a 25% stock dividend distributed to shareholders of record as of January 3, 2018. All applicable share and per share information has been adjusted retrospectively to give effect to the 5-for-4 stock splits. New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, “Revenue from Contracts with Customers,” which provides a comprehensive new revenue recognition model that will supersede nearly all existing revenue recognition guidance. Under ASU 2014-09, an entity will recognize revenue when it transfers promised goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. The guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts. ASU 2014-09, as amended, is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2017, or in fiscal 2019 for HEICO. Early adoption in the year preceding the effective date is permitted. ASU 2014-09 shall be applied either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying ASU 2014-09 recognized at the date of initial application. The Company is currently evaluating which transition method it will elect. In addition, the Company is currently identifying its various revenue streams and reviewing certain underlying customer contracts to determine the effect the adoption of this guidance will have on its consolidated results of operations, financial position and cash flows. In July 2015, the FASB issued ASU 2015-11, "Simplifying the Measurement of Inventory,” which requires entities to measure inventories at the lower of cost or net realizable value. Previously, inventories were measured at the lower of cost or market. The Company adopted ASU 2015-11 in the first quarter of fiscal 2018, resulting in no material effect on the Company's consolidated results of operations, financial position or cash flows. In February 2016, the FASB issued ASU 2016-02, “Leases," which requires recognition of lease assets and lease liabilities on the balance sheet of lessees. ASU 2016-02 is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2018, or in fiscal 2020 for HEICO. Early adoption is permitted. ASU 2016-02 requires a modified retrospective transition approach and provides certain optional transition relief. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated results of operations, financial position and cash flows. In August 2016, the FASB issued ASU 2016-15, "Classification of Certain Cash Receipts and Cash Payments," which clarifies how certain cash receipts and cash payments are to be presented and classified in the statement of cash flows. ASU 2016-15 provides guidance on eight specific cash flow classification issues including contingent consideration payments made after a business combination, proceeds from corporate-owned life insurance policies and distributions received from equity method investees. ASU 2016-15 is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2017, or in fiscal 2019 for HEICO. Early adoption is permitted. ASU 2016-15 requires a retrospective transition approach for all periods presented. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated statement of cash flows. In January 2017, the FASB issued ASU 2017-04, "Simplifying the Test for Goodwill Impairment," which is intended to simplify the current test for goodwill impairment by eliminating the second step in which the implied value of a reporting unit is calculated when the carrying value of the reporting unit exceeds its fair value. Under ASU 2017-04, goodwill impairment should be recognized for the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 must be applied prospectively and is effective for any annual or interim goodwill impairment test in fiscal years beginning after December 15, 2019, or in fiscal 2021 for HEICO. Early adoption is permitted. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated results of operations, financial position and cash flows.

ACQUISITIONS

ACQUISITIONS	3 Months Ended
	Jan. 31, 2018
Business Combinations [Abstract]
Acquisitions [Text Block]	ACQUISITION In November 2017 , the Company, through a subsidiary of HEICO Electronic, acquired all the stock of Interface Displays & Controls, Inc. ("IDC"). IDC designs and manufactures electronic products for aviation, marine, military fighting vehicles, and embedded computing markets. The purchase price of this acquisition was paid using cash provided by operating activities. The total consideration for the acquisition of IDC is not material or significant to the Company’s condensed consolidated financial statements and the related allocation to the tangible and identifiable intangible assets acquired and liabilities assumed is preliminary until the company obtains final information regarding their fair values. The operating results of IDC were included in the Company’s results of operations from the effective acquisition date. The amount of net sales and earnings of IDC included in the Condensed Consolidated Statement of Operations for the three months ended January 31, 2018 is not material. Had the IDC acquisition been consummated as of November 1, 2016, net sales, net income from consolidated operations, net income attributable to HEICO, and basic and diluted net income per share attributable to HEICO shareholders on a pro forma basis for the three months ended January 31, 2018 and 2017 would not have been materially different than the reported amounts.

SELECTED FINANCIAL STATEMENT IN

SELECTED FINANCIAL STATEMENT INFORMATION	3 Months Ended
	Jan. 31, 2018
Selected Financial Statement Information [Abstract]
Selected Financial Statement Information [Text Block]	SELECTED FINANCIAL STATEMENT INFORMATION Accounts Receivable (in thousands) January 31, 2018 October 31, 2017 Accounts receivable $214,361 $225,462 Less: Allowance for doubtful accounts (4,083 ) (3,006 ) Accounts receivable, net $210,278 $222,456 Costs and Estimated Earnings on Uncompleted Percentage-of-Completion Contracts (in thousands) January 31, 2018 October 31, 2017 Costs incurred on uncompleted contracts $31,275 $29,491 Estimated earnings 19,743 19,902 51,018 49,393 Less: Billings to date (39,267 ) (41,262 ) $11,751 $8,131 Included in the accompanying Condensed Consolidated Balance Sheets under the following captions: Accounts receivable, net (costs and estimated earnings in excess of billings) $13,186 $9,377 Accrued expenses and other current liabilities (billings in excess of costs and estimated earnings) (1,435 ) (1,246 ) $11,751 $8,131 Changes in estimates pertaining to percentage-of-completion contracts did not have a material effect on net income from consolidated operations for the three months ended January 31, 2018 and 2017. Inventories (in thousands) January 31, 2018 October 31, 2017 Finished products $181,435 $173,559 Work in process 44,397 39,986 Materials, parts, assemblies and supplies 139,669 128,031 Contracts in process 1,985 2,415 Less: Billings to date (91 ) (363 ) Inventories, net of valuation reserves $367,395 $343,628 Contracts in process represents accumulated capitalized costs associated with fixed price contracts. Related progress billings and customer advances (“billings to date”) are classified as a reduction to contracts in process, if any, and any excess is included in accrued expenses and other liabilities. Property, Plant and Equipment (in thousands) January 31, 2018 October 31, 2017 Land $5,443 $5,435 Buildings and improvements 93,280 91,916 Machinery, equipment and tooling 196,686 191,298 Construction in progress 8,193 5,553 303,602 294,202 Less: Accumulated depreciation and amortization (170,487 ) (164,319 ) Property, plant and equipment, net $133,115 $129,883 Accrued Customer Rebates and Credits The aggregate amount of accrued customer rebates and credits included within accrued expenses and other current liabilities in the accompanying Condensed Consolidated Balance Sheets was $14.2 million as of January 31, 2018 and $12.9 million as of October 31, 2017. The total customer rebates and credits deducted within net sales for the three months ended January 31, 2018 and 2017 was $2.5 million and $2.4 million , respectively. Research and Development Expenses The amount of new product research and development ("R&D") expenses included in cost of sales for the three months ended January 31, 2018 and 2017 is as follows (in thousands): Three months ended January 31, 2018 2017 R&D expenses $12,707 $11,246 Redeemable Noncontrolling Interests The holders of equity interests in certain of the Company's subsidiaries have rights ("Put Rights") that may be exercised on varying dates causing the Company to purchase their equity interests through fiscal 2025. The Put Rights, all of which relate either to common shares or membership interests in limited liability companies, provide that the cash consideration to be paid for their equity interests (the "Redemption Amount") be at fair value or a formula that management intended to reasonably approximate fair value based solely on a multiple of future earnings over a measurement period. Management's estimate of the aggregate Redemption Amount of all Put Rights that the Company could be required to pay is as follows (in thousands): January 31, 2018 October 31, 2017 Redeemable at fair value $83,360 $82,128 Redeemable based on a multiple of future earnings 48,995 48,995 Redeemable noncontrolling interests $132,355 $131,123 Accumulated Other Comprehensive (Loss) Income Changes in the components of accumulated other comprehensive (loss) income for the three months ended January 31, 2018 are as follows (in thousands): Foreign Currency Translation Pension Benefit Obligation Accumulated Other Comprehensive (Loss) Income Balances as of October 31, 2017 ($9,533 ) ($1,023 ) ($10,556 ) Unrealized gain 14,969 — 14,969 Amortization of unrealized loss — 4 4 Balances as of January 31, 2018 $5,436 ($1,019 ) $4,417

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS	3 Months Ended
	Jan. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	GOODWILL AND OTHER INTANGIBLE ASSETS Changes in the carrying amount of goodwill by operating segment for the three months ended January 31, 2018 are as follows (in thousands): Segment Consolidated Totals FSG ETG Balances as of October 31, 2017 $388,606 $692,700 $1,081,306 Foreign currency translation adjustments 3,065 3,202 6,267 Goodwill acquired — 3,078 3,078 Adjustments to goodwill 185 28 213 Balances as of January 31, 2018 $391,856 $699,008 $1,090,864 Foreign currency translation adjustments are included in other comprehensive income (loss) in the Company's Condensed Consolidated Statements of Comprehensive Income. The goodwill acquired pertains to the fiscal 2018 acquisition described in Note 2, Acquisition, and represents the residual value after the allocation of the total consideration to the tangible and identifiable intangible assets acquired and liabilities assumed. The Company estimates that all of the goodwill acquired in fiscal 2018 will be deductible for income tax purposes. The adjustments to goodwill represent immaterial measurement period adjustments to the purchase price allocation of certain fiscal 2017 acquisitions. Identifiable intangible assets consist of the following (in thousands): As of January 31, 2018 As of October 31, 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortizing Assets: Customer relationships $383,294 ($126,803 ) $256,491 $379,966 ($117,069 ) $262,897 Intellectual property 183,997 (48,888 ) 135,109 181,811 (44,861 ) 136,950 Licenses 6,559 (3,078 ) 3,481 6,559 (2,928 ) 3,631 Patents 912 (580 ) 332 870 (551 ) 319 Non-compete agreements 824 (824 ) — 817 (817 ) — Trade names 466 (128 ) 338 466 (118 ) 348 576,052 (180,301 ) 395,751 570,489 (166,344 ) 404,145 Non-Amortizing Assets: Trade names 135,236 — 135,236 133,936 — 133,936 $711,288 ($180,301 ) $530,987 $704,425 ($166,344 ) $538,081 Amortization expense related to intangible assets for the three months ended January 31, 2018 and 2017 was $12.4 million and $9.2 million , respectively. Amortization expense related to intangible assets for the remainder of fiscal 2018 is estimated to be $36.4 million . Amortization expense for each of the next five fiscal years and thereafter is estimated to be $46.5 million in fiscal 2019, $43.6 million in fiscal 2020, $40.9 million in fiscal 2021, $35.5 million in fiscal 2022, $31.3 million in fiscal 2023, and $161.6 million thereafter.

LONG-TERM DEBT

LONG-TERM DEBT	3 Months Ended
	Jan. 31, 2018
Debt Disclosure [Abstract]
Long-term Debt [Text Block]	LONG-TERM DEBT Long-term debt consists of the following (in thousands): January 31, 2018 October 31, 2017 Borrowings under revolving credit facility $666,000 $671,000 Capital leases and note payable 3,012 2,979 669,012 673,979 Less: Current maturities of long-term debt (485 ) (451 ) $668,527 $673,528 The Company's borrowings under its revolving credit facility mature in fiscal 2023. As of January 31, 2018 and October 31 2017, the weighted average interest rate on borrowings under the Company's revolving credit facility was 2.9% and 2.4% , respectively. The revolving credit facility contains both financial and non-financial covenants. As of January 31, 2018, the Company was in compliance with all such covenants.

INCOME TAXES

INCOME TAXES	3 Months Ended
	Jan. 31, 2018
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAXES On December 22, 2017, the United States (U.S.) government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the “Tax Act”). The Tax Act contains significant changes to existing tax law including, among other things, a reduction in the U.S. federal statutory tax rate from 35% to 21% and the implementation of a territorial tax system resulting in a one-time transition tax on the unremitted earnings of the Company’s foreign subsidiaries. The Tax Act also contains additional provisions that will become effective for HEICO in fiscal 2019 including a new tax on Global Intangible Low-Taxed Income (“GILTI”), a new deduction for Foreign-Derived Intangible Income (“FDII”), the repeal of the domestic production activity deduction and increased limitations on the deductibility of certain executive compensation. The Company has not yet determined the impact of the provisions of the Tax Act which do not become effective for HEICO until fiscal 2019. The Securities and Exchange Commission issued Staff Accounting Bulletin No. 118 (“SAB 118”), which provides guidance on the accounting for the tax effects of the Tax Act. This guidance provides companies with a measurement period not to exceed one year from the enactment of the Tax Act to complete their accounting for the related tax effects. SAB 118 further states that during the measurement period, companies who are able to make reasonable estimates of the tax effects of the Tax Act should include those amounts in their financial statements as provisional amounts and reflect any adjustments in subsequent periods as they refine their estimates or complete their accounting of such tax effects. As a result of the Tax Act, the Company has revised its estimated annual effective federal statutory income tax rate to reflect a reduction in the rate from 35% to 21% effective January 1, 2018, which results in a blended rate of 23.3% for HEICO in fiscal 2018. Additionally, the Company remeasured its U.S. federal net deferred tax liabilities and recorded a provisional discrete tax benefit of $16.6 million in the first quarter of fiscal 2018. Further, the Company recorded a provisional discrete tax expense of $4.7 million in the first quarter of fiscal 2018 related to a one-time transition tax on the unremitted earnings of the Company's foreign subsidiaries. The Company intends to pay this tax over the eight-year period allowed for in the Tax Act. The Company’s effective tax rate in the first quarter of fiscal 2018 decreased to 4.7% from 26.6% in the first quarter of fiscal 2017. The decrease principally reflects the previously mentioned discrete tax benefit from the remeasurement of the Company’s U.S. federal net deferred tax liabilities and the benefit of a lower federal statutory income tax rate, which were partially offset by the aforementioned one-time transition tax expense.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	3 Months Ended
	Jan. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	FAIR VALUE MEASUREMENTS The Company's assets and liabilities that were measured at fair value on a recurring basis are set forth by level within the fair value hierarchy in the following tables (in thousands): As of January 31, 2018 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Deferred compensation plans: Corporate-owned life insurance $— $126,715 $— $126,715 Money market funds 4,890 — — 4,890 Equity securities 3,167 — — 3,167 Mutual funds 1,683 — — 1,683 Other 1,379 — — 1,379 Total assets $11,119 $126,715 $— $137,834 Liabilities: Contingent consideration $— $— $24,931 $24,931 As of October 31, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Deferred compensation plans: Corporate-owned life insurance $— $113,220 $— $113,220 Money market funds 3,972 — — 3,972 Equity securities 2,895 — — 2,895 Mutual funds 1,541 — — 1,541 Other 1,246 — — 1,246 Total assets $9,654 $113,220 $— $122,874 Liabilities: Contingent consideration $— $— $27,573 $27,573 The Company maintains two non-qualified deferred compensation plans. The assets of the HEICO Corporation Leadership Compensation Plan (the "LCP") principally represent cash surrender values of life insurance policies, which derive their fair values from investments in mutual funds that are managed by an insurance company and are classified within Level 2 and valued using a market approach. Certain other assets of the LCP represent investments in money market funds that are classified within Level 1. The assets of the Company’s other deferred compensation plan are principally invested in equity securities and mutual funds that are classified within Level 1. The assets of both plans are held within irrevocable trusts and classified within other assets in the Company’s Condensed Consolidated Balance Sheets and have an aggregate value of $137.8 million as of January 31, 2018 and $122.9 million as of October 31, 2017, of which the LCP related assets were $131.6 million and $117.2 million as of January 31, 2018 and October 31, 2017, respectively. The related liabilities of the two deferred compensation plans are included within other long-term liabilities in the Company’s Condensed Consolidated Balance Sheets and have an aggregate value of $136.5 million as of January 31, 2018 and $121.7 million as of October 31, 2017, of which the LCP related liability was $130.3 million and $116.0 million as of January 31, 2018 and October 31, 2017, respectively. As part of the agreement to acquire a subsidiary by the ETG in fiscal 2017, the Company may be obligated to pay contingent consideration of $20.0 million in fiscal 2023 should the acquired entity meet certain earnings objectives during the first six years following the acquisition. As of January 31, 2018, the estimated fair value of the contingent consideration was $13.2 million . As part of the agreement to acquire certain assets of a company by the ETG in fiscal 2016, the Company may be obligated to pay contingent consideration of up to $1.7 million in aggregate during the first four years following the first anniversary of the acquisition. During fiscal 2018, the Company paid $.3 million of contingent consideration based on the actual financial performance of the acquired entity during the second year following the acquisition. As of January 31, 2018, the estimated fair value of the remaining contingent consideration was $1.1 million . As part of the agreement to acquire a subsidiary by the FSG in fiscal 2015, the Company may be obligated to pay contingent consideration of up to €6.1 million per year, or €12.2 million in aggregate, should the acquired entity meet certain earnings objectives during each of the first two years following the second anniversary of the acquisition. As of January 31, 2018, the estimated fair value of the contingent consideration was €8.6 million , or $10.7 million , as compared to €10.8 million , or $12.6 million , as of October 31, 2017. The decrease in the fair value of the contingent consideration is principally attributed to revised earnings estimates for the second year of the earnout period that reflect less favorable projected market conditions. The estimated fair value of the contingent consideration arrangements described above are classified within Level 3 and were determined using a probability-based scenario analysis approach. Under this method, a set of discrete potential future subsidiary earnings was determined using internal estimates based on various revenue growth rate assumptions for each scenario. A probability of likelihood was assigned to each discrete potential future earnings estimate and the resultant contingent consideration was calculated. The resulting probability-weighted contingent consideration amounts were discounted using a weighted average discount rate reflecting the credit risk of HEICO. Changes in either the revenue growth rates, related earnings or the discount rate could result in a material change to the amount of contingent consideration accrued and such changes will be recorded in the Company's condensed consolidated statements of operations. The Level 3 inputs used to derive the estimated fair value of the Company's contingent consideration liability as of January 31, 2018 were as follows: Fiscal 2017 Acquisition Fiscal 2016 Acquisition Fiscal 2015 Acquisition Compound annual revenue growth rate range (8 %) - 4% 4 % - 12% 9 % - 13% Weighted average discount rate 5.5% 4.7% .8% Changes in the Company’s contingent consideration liability measured at fair value on a recurring basis using unobservable inputs (Level 3) for the three months ended January 31, 2018 are as follows (in thousands): Balance as of October 31, 2017 $27,573 Decrease in accrued contingent consideration (3,195 ) Payment of contingent consideration (300 ) Foreign currency transaction adjustments 853 Balance as of January 31, 2018 $24,931 Included in the accompanying Condensed Consolidated Balance Sheet under the following captions: Accrued expenses and other current liabilities $7,262 Other long-term liabilities 17,669 $24,931 The Company recorded the decrease in accrued contingent consideration and foreign currency transaction adjustments set forth in the table above within selling, general and administrative expenses in the Company's Condensed Consolidated Statement of Operations. The Company did not have any transfers between Level 1 and Level 2 fair value measurements during the three months ended January 31, 2018. The carrying amounts of the Company’s cash and cash equivalents, accounts receivable, trade accounts payable and accrued expenses and other current liabilities approximate fair value as of January 31, 2018 due to the relatively short maturity of the respective instruments. The carrying amount of long-term debt approximates fair value due to its variable interest rates.

NET INCOME PER SHARE ATTRIBUTAB

NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS	3 Months Ended
	Jan. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS The computation of basic and diluted net income per share attributable to HEICO shareholders is as follows (in thousands, except per share data): Three months ended January 31, 2018 2017 Numerator: Net income attributable to HEICO $65,152 $40,927 Denominator: Weighted average common shares outstanding - basic 105,639 105,178 Effect of dilutive stock options 3,473 2,827 Weighted average common shares outstanding - diluted 109,112 108,005 Net income per share attributable to HEICO shareholders: Basic $.62 $.39 Diluted $.60 $.38 Anti-dilutive stock options excluded 616 213

OPERATING SEGMENTS

OPERATING SEGMENTS	3 Months Ended
	Jan. 31, 2018
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	OPERATING SEGMENTS Information on the Company’s two operating segments, the FSG and the ETG, for the three months ended January 31, 2018 and 2017, respectively, is as follows (in thousands): Other, (1) Consolidated Segment FSG ETG Three months ended January 31, 2018: Net sales $254,721 $155,658 ($5,969 ) $404,410 Depreciation 3,292 2,274 62 5,628 Amortization 4,947 8,104 345 13,396 Operating income 45,869 43,220 (9,529 ) 79,560 Capital expenditures 2,297 1,743 3,537 7,577 Three months ended January 31, 2017: Net sales $220,901 $126,165 ($3,634 ) $343,432 Depreciation 3,148 2,043 53 5,244 Amortization 4,104 5,735 165 10,004 Operating income 41,363 29,084 (5,897 ) 64,550 Capital expenditures 3,872 2,504 46 6,422 (1) Intersegment activity principally consists of net sales from the ETG to the FSG. Total assets by operating segment as of January 31, 2018 and October 31, 2017 are as follows (in thousands): Other, Consolidated Segment FSG ETG Total assets as of January 31, 2018 $1,051,527 $1,357,992 $160,923 $2,570,442 Total assets as of October 31, 2017 1,042,925 1,339,363 130,143 2,512,431

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Jan. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	COMMITMENTS AND CONTINGENCIES Guarantees As of January 31, 2018, the Company has arranged for standby letters of credit aggregating $4.3 million , which are supported by its revolving credit facility and pertain to payment guarantees related to potential workers' compensation claims and a facility lease as well as performance guarantees related to customer contracts entered into by certain of the Company's subsidiaries. Product Warranty Changes in the Company’s product warranty liability for the three months ended January 31, 2018 and 2017, respectively, are as follows (in thousands): Three months ended January 31, 2018 2017 Balances as of beginning of fiscal year $2,921 $3,351 Accruals for warranties 798 782 Acquired warranty liabilities 280 — Warranty claims settled (832 ) (619 ) Balances as of January 31 $3,167 $3,514 Litigation The Company is involved in various legal actions arising in the normal course of business. Based upon the Company’s and its legal counsel’s evaluations of any claims or assessments, management is of the opinion that the outcome of these matters will not have a material adverse effect on the Company’s results of operations, financial position or cash flows.

SUBSEQUENT EVENT

SUBSEQUENT EVENT	3 Months Ended
	Jan. 31, 2018
Subsequent Events [Abstract]
Subsequent Events [Text Block]	SUBSEQUENT EVENT In February 2018 , the Company, through a subsidiary of HEICO Electronic, acquired 85% of the assets and business of Sensor Technology Engineering, Inc. ("Sensor Technology") . Sensor Technology designs and manufactures sophisticated nuclear radiation detectors for law enforcement, homeland security and military applications. The remaining 15% continues to be owned by certain members of Sensory Technology's management team. The purchase price of this acquisition was paid in cash, principally using proceeds from the Company's revolving credit facility and the total consideration for the acquisition is not material or significant to the Company’s condensed consolidated financial statements.

SUMMARY OF SIGNIFICANT ACCOUN20

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Jan. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation [Text Block]	Basis of Presentation The accompanying unaudited condensed consolidated financial statements of HEICO Corporation and its subsidiaries (collectively, “HEICO,” or the “Company”) have been prepared in conformity with accounting principles generally accepted in the United States of America for interim financial information and in accordance with the instructions to Form 10-Q. Therefore, the condensed consolidated financial statements do not include all information and footnotes normally included in annual consolidated financial statements and 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 October 31, 2017. The October 31, 2017 Condensed Consolidated Balance Sheet has been derived from the Company’s audited consolidated financial statements. In the opinion of management, the unaudited condensed consolidated financial statements contain all adjustments (consisting principally of normal recurring accruals) necessary for a fair presentation of the condensed consolidated balance sheets, statements of operations, statements of comprehensive income, statements of shareholders' equity and statements of cash flows for such interim periods presented. The results of operations for the three months ended January 31, 2018 are not necessarily indicative of the results which may be expected for the entire fiscal year. The Company has two operating segments: the Flight Support Group (“FSG”), consisting of HEICO Aerospace Holdings Corp. and HEICO Flight Support Corp. and their respective subsidiaries; and the Electronic Technologies Group (“ETG”), consisting of HEICO Electronic Technologies Corp. (“HEICO Electronic”) and its subsidiaries.
Stock Split [Policy Text Block]	Stock Splits In March 2017, the Company's Board of Directors declared a 5-for-4 stock split on both classes of the Company's common stock. The stock split was effected as of April 19, 2017 in the form of a 25% stock dividend distributed to shareholders of record as of April 7, 2017. In December 2017, the Company's Board of Directors declared a 5-for-4 stock split on both classes of the Company's common stock.
New Accounting Pronouncements [Text Block]	New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, “Revenue from Contracts with Customers,” which provides a comprehensive new revenue recognition model that will supersede nearly all existing revenue recognition guidance. Under ASU 2014-09, an entity will recognize revenue when it transfers promised goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. The guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts. ASU 2014-09, as amended, is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2017, or in fiscal 2019 for HEICO. Early adoption in the year preceding the effective date is permitted. ASU 2014-09 shall be applied either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying ASU 2014-09 recognized at the date of initial application. The Company is currently evaluating which transition method it will elect. In addition, the Company is currently identifying its various revenue streams and reviewing certain underlying customer contracts to determine the effect the adoption of this guidance will have on its consolidated results of operations, financial position and cash flows. In July 2015, the FASB issued ASU 2015-11, "Simplifying the Measurement of Inventory,” which requires entities to measure inventories at the lower of cost or net realizable value. Previously, inventories were measured at the lower of cost or market. The Company adopted ASU 2015-11 in the first quarter of fiscal 2018, resulting in no material effect on the Company's consolidated results of operations, financial position or cash flows. In February 2016, the FASB issued ASU 2016-02, “Leases," which requires recognition of lease assets and lease liabilities on the balance sheet of lessees. ASU 2016-02 is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2018, or in fiscal 2020 for HEICO. Early adoption is permitted. ASU 2016-02 requires a modified retrospective transition approach and provides certain optional transition relief. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated results of operations, financial position and cash flows. In August 2016, the FASB issued ASU 2016-15, "Classification of Certain Cash Receipts and Cash Payments," which clarifies how certain cash receipts and cash payments are to be presented and classified in the statement of cash flows. ASU 2016-15 provides guidance on eight specific cash flow classification issues including contingent consideration payments made after a business combination, proceeds from corporate-owned life insurance policies and distributions received from equity method investees. ASU 2016-15 is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2017, or in fiscal 2019 for HEICO. Early adoption is permitted. ASU 2016-15 requires a retrospective transition approach for all periods presented. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated statement of cash flows. In January 2017, the FASB issued ASU 2017-04, "Simplifying the Test for Goodwill Impairment," which is intended to simplify the current test for goodwill impairment by eliminating the second step in which the implied value of a reporting unit is calculated when the carrying value of the reporting unit exceeds its fair value. Under ASU 2017-04, goodwill impairment should be recognized for the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 must be applied prospectively and is effective for any annual or interim goodwill impairment test in fiscal years beginning after December 15, 2019, or in fiscal 2021 for HEICO. Early adoption is permitted. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated results of operations, financial position and cash flows.

SELECTED FINANCIAL STATEMENT 21

SELECTED FINANCIAL STATEMENT INFORMATION (Tables)	3 Months Ended
	Jan. 31, 2018
Selected Financial Statement Information [Abstract]
Schedule of Accounts Receivable [Table Text Block]	Accounts Receivable (in thousands) January 31, 2018 October 31, 2017 Accounts receivable $214,361 $225,462 Less: Allowance for doubtful accounts (4,083 ) (3,006 ) Accounts receivable, net $210,278 $222,456
Schedule of Costs in Excess of Billings and Billings in Excess of Costs [Table Text Block]	Costs and Estimated Earnings on Uncompleted Percentage-of-Completion Contracts (in thousands) January 31, 2018 October 31, 2017 Costs incurred on uncompleted contracts $31,275 $29,491 Estimated earnings 19,743 19,902 51,018 49,393 Less: Billings to date (39,267 ) (41,262 ) $11,751 $8,131 Included in the accompanying Condensed Consolidated Balance Sheets under the following captions: Accounts receivable, net (costs and estimated earnings in excess of billings) $13,186 $9,377 Accrued expenses and other current liabilities (billings in excess of costs and estimated earnings) (1,435 ) (1,246 ) $11,751 $8,131
Schedule of Inventories [Table Text Block]	Inventories (in thousands) January 31, 2018 October 31, 2017 Finished products $181,435 $173,559 Work in process 44,397 39,986 Materials, parts, assemblies and supplies 139,669 128,031 Contracts in process 1,985 2,415 Less: Billings to date (91 ) (363 ) Inventories, net of valuation reserves $367,395 $343,628
Schedule of Property, Plant and Equipment [Table Text Block]	Property, Plant and Equipment (in thousands) January 31, 2018 October 31, 2017 Land $5,443 $5,435 Buildings and improvements 93,280 91,916 Machinery, equipment and tooling 196,686 191,298 Construction in progress 8,193 5,553 303,602 294,202 Less: Accumulated depreciation and amortization (170,487 ) (164,319 ) Property, plant and equipment, net $133,115 $129,883
Schedule of Research and Development Expenses [Table Text Block]	The amount of new product research and development ("R&D") expenses included in cost of sales for the three months ended January 31, 2018 and 2017 is as follows (in thousands): Three months ended January 31, 2018 2017 R&D expenses $12,707 $11,246
Schedule of Redeemable Noncontrolling Interests [Table Text Block]	Management's estimate of the aggregate Redemption Amount of all Put Rights that the Company could be required to pay is as follows (in thousands): January 31, 2018 October 31, 2017 Redeemable at fair value $83,360 $82,128 Redeemable based on a multiple of future earnings 48,995 48,995 Redeemable noncontrolling interests $132,355 $131,123
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Changes in the components of accumulated other comprehensive (loss) income for the three months ended January 31, 2018 are as follows (in thousands): Foreign Currency Translation Pension Benefit Obligation Accumulated Other Comprehensive (Loss) Income Balances as of October 31, 2017 ($9,533 ) ($1,023 ) ($10,556 ) Unrealized gain 14,969 — 14,969 Amortization of unrealized loss — 4 4 Balances as of January 31, 2018 $5,436 ($1,019 ) $4,417

GOODWILL AND OTHER INTANGIBLE22

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	3 Months Ended
	Jan. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]	Changes in the carrying amount of goodwill by operating segment for the three months ended January 31, 2018 are as follows (in thousands): Segment Consolidated Totals FSG ETG Balances as of October 31, 2017 $388,606 $692,700 $1,081,306 Foreign currency translation adjustments 3,065 3,202 6,267 Goodwill acquired — 3,078 3,078 Adjustments to goodwill 185 28 213 Balances as of January 31, 2018 $391,856 $699,008 $1,090,864
Schedule Of Identifiable Intangible Assets [Table Text Block]	Identifiable intangible assets consist of the following (in thousands): As of January 31, 2018 As of October 31, 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortizing Assets: Customer relationships $383,294 ($126,803 ) $256,491 $379,966 ($117,069 ) $262,897 Intellectual property 183,997 (48,888 ) 135,109 181,811 (44,861 ) 136,950 Licenses 6,559 (3,078 ) 3,481 6,559 (2,928 ) 3,631 Patents 912 (580 ) 332 870 (551 ) 319 Non-compete agreements 824 (824 ) — 817 (817 ) — Trade names 466 (128 ) 338 466 (118 ) 348 576,052 (180,301 ) 395,751 570,489 (166,344 ) 404,145 Non-Amortizing Assets: Trade names 135,236 — 135,236 133,936 — 133,936 $711,288 ($180,301 ) $530,987 $704,425 ($166,344 ) $538,081

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	3 Months Ended
	Jan. 31, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table Text Block]	Long-term debt consists of the following (in thousands): January 31, 2018 October 31, 2017 Borrowings under revolving credit facility $666,000 $671,000 Capital leases and note payable 3,012 2,979 669,012 673,979 Less: Current maturities of long-term debt (485 ) (451 ) $668,527 $673,528

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	3 Months Ended
	Jan. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The Company's assets and liabilities that were measured at fair value on a recurring basis are set forth by level within the fair value hierarchy in the following tables (in thousands): As of January 31, 2018 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Deferred compensation plans: Corporate-owned life insurance $— $126,715 $— $126,715 Money market funds 4,890 — — 4,890 Equity securities 3,167 — — 3,167 Mutual funds 1,683 — — 1,683 Other 1,379 — — 1,379 Total assets $11,119 $126,715 $— $137,834 Liabilities: Contingent consideration $— $— $24,931 $24,931 As of October 31, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Deferred compensation plans: Corporate-owned life insurance $— $113,220 $— $113,220 Money market funds 3,972 — — 3,972 Equity securities 2,895 — — 2,895 Mutual funds 1,541 — — 1,541 Other 1,246 — — 1,246 Total assets $9,654 $113,220 $— $122,874 Liabilities: Contingent consideration $— $— $27,573 $27,573
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]	The Level 3 inputs used to derive the estimated fair value of the Company's contingent consideration liability as of January 31, 2018 were as follows: Fiscal 2017 Acquisition Fiscal 2016 Acquisition Fiscal 2015 Acquisition Compound annual revenue growth rate range (8 %) - 4% 4 % - 12% 9 % - 13% Weighted average discount rate 5.5% 4.7% .8%
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	Changes in the Company’s contingent consideration liability measured at fair value on a recurring basis using unobservable inputs (Level 3) for the three months ended January 31, 2018 are as follows (in thousands): Balance as of October 31, 2017 $27,573 Decrease in accrued contingent consideration (3,195 ) Payment of contingent consideration (300 ) Foreign currency transaction adjustments 853 Balance as of January 31, 2018 $24,931 Included in the accompanying Condensed Consolidated Balance Sheet under the following captions: Accrued expenses and other current liabilities $7,262 Other long-term liabilities 17,669 $24,931

NET INCOME PER SHARE ATTRIBUT25

NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Tables)	3 Months Ended
	Jan. 31, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The computation of basic and diluted net income per share attributable to HEICO shareholders is as follows (in thousands, except per share data): Three months ended January 31, 2018 2017 Numerator: Net income attributable to HEICO $65,152 $40,927 Denominator: Weighted average common shares outstanding - basic 105,639 105,178 Effect of dilutive stock options 3,473 2,827 Weighted average common shares outstanding - diluted 109,112 108,005 Net income per share attributable to HEICO shareholders: Basic $.62 $.39 Diluted $.60 $.38 Anti-dilutive stock options excluded 616 213

OPERATING SEGMENTS (Tables)

OPERATING SEGMENTS (Tables)	3 Months Ended
	Jan. 31, 2018
Segment Reporting [Abstract]
Schedule Of Segment Reporting Information By Segment [Table Text Block]	Information on the Company’s two operating segments, the FSG and the ETG, for the three months ended January 31, 2018 and 2017, respectively, is as follows (in thousands): Other, (1) Consolidated Segment FSG ETG Three months ended January 31, 2018: Net sales $254,721 $155,658 ($5,969 ) $404,410 Depreciation 3,292 2,274 62 5,628 Amortization 4,947 8,104 345 13,396 Operating income 45,869 43,220 (9,529 ) 79,560 Capital expenditures 2,297 1,743 3,537 7,577 Three months ended January 31, 2017: Net sales $220,901 $126,165 ($3,634 ) $343,432 Depreciation 3,148 2,043 53 5,244 Amortization 4,104 5,735 165 10,004 Operating income 41,363 29,084 (5,897 ) 64,550 Capital expenditures 3,872 2,504 46 6,422
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	Total assets by operating segment as of January 31, 2018 and October 31, 2017 are as follows (in thousands): Other, Consolidated Segment FSG ETG Total assets as of January 31, 2018 $1,051,527 $1,357,992 $160,923 $2,570,442 Total assets as of October 31, 2017 1,042,925 1,339,363 130,143 2,512,431

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	3 Months Ended
	Jan. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liability [Table Text Block]	Changes in the Company’s product warranty liability for the three months ended January 31, 2018 and 2017, respectively, are as follows (in thousands): Three months ended January 31, 2018 2017 Balances as of beginning of fiscal year $2,921 $3,351 Accruals for warranties 798 782 Acquired warranty liabilities 280 — Warranty claims settled (832 ) (619 ) Balances as of January 31 $3,167 $3,514

SUMMARY OF SIGNIFICANT ACCOUN28

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textuals)	Jan. 31, 2018	Apr. 30, 2017
Accounting Policies [Abstract]
Common Stock Dividend Percentage Rate	25.00%	25.00%

ACQUISITIONS (Details Textuals)

ACQUISITIONS (Details Textuals) - Electronic Technologies Group [Member] - IDC [Member]	3 Months Ended
	Jan. 31, 2018
Business Acquisition [Line Items]
Effective Date of Acquisition	Nov. 30, 2017
Name of Acquired Entity	Interface Displays & Controls, Inc.
Description of Acquired Entity	IDC designs and manufactures electronic products for aviation, marine, military fighting vehicles, and embedded computing markets.

SELECTED FINANCIAL STATEMENT 30

SELECTED FINANCIAL STATEMENT INFORMATION (Accounts Receivable) (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 214,361	$ 225,462
Less: Allowance for doubtful accounts	(4,083)	(3,006)
Accounts receivable, net	$ 210,278	$ 222,456

SELECTED FINANCIAL STATEMENT 31

SELECTED FINANCIAL STATEMENT INFORMATION (Costs and Estimated Earnings on Uncompleted POC Contracts) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jan. 31, 2018	Oct. 31, 2016	Oct. 31, 2017
Costs incurred on uncompleted contracts	$ 31,275	$ 29,491
Estimated Earnings	19,743	19,902
Estimated Revenue on Completed Percentage-of-Completion Contracts	51,018	$ 49,393
Billed Contracts Receivable	(39,267)		$ (41,262)
Billings in Excess of Cost and Estimated Earnings	11,751		8,131
Included in the accompanying Condensed Consolidated Balance Sheets under the following captions:
Accounts receivable, net (costs and estimated earnings in excess of billings)	13,186		9,377
Accrued expenses and other current liabilities (billings in excess of costs and estimated earnings)	(1,435)		(1,246)
Billings in Excess of Cost and Estimated Earnings	$ 11,751		$ 8,131

SELECTED FINANCIAL STATEMENT 32

SELECTED FINANCIAL STATEMENT INFORMATION (Inventories) (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Inventory [Line Items]
Finished products	$ 181,435	$ 173,559
Work in process	44,397	39,986
Materials, parts, assemblies and supplies	139,669	128,031
Contracts in process	1,985	2,415
Less: Billings to date	(91)	(363)
Inventories, net of valuation reserves	$ 367,395	$ 343,628

SELECTED FINANCIAL STATEMENT 33

SELECTED FINANCIAL STATEMENT INFORMATION (Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Property, Plant and Equipment [Line Items]
Land	$ 5,443	$ 5,435
Buildings and improvements	93,280	91,916
Machinery, equipment and tooling	196,686	191,298
Construction in progress	8,193	5,553
Property, plant and equipment, gross	303,602	294,202
Less: Accumulated depreciation and amortization	(170,487)	(164,319)
Property, plant and equipment, net	$ 133,115	$ 129,883

SELECTED FINANCIAL STATEMENT 34

SELECTED FINANCIAL STATEMENT INFORMATION SELECTED FINANCIAL STATEMENT INFORMATION (Research and Development Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Selected Financial Statement Information (Details) [Abstract]
R&D expenses	$ 12,707	$ 11,246

SELECTED FINANCIAL STATEMENT 35

SELECTED FINANCIAL STATEMENT INFORMATION SELECTED FINANCIAL STATEMENT INFORMATION (Redeemable Noncontrolling Interests) (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Redeemable Noncontrolling Interest [Line Items]
Redeemable at fair value	$ 83,360	$ 82,128
Redeemable based on a multiple of future earnings	48,995	48,995
Redeemable noncontrolling interests	$ 132,355	$ 131,123

SELECTED FINANCIAL STATEMENT 36

SELECTED FINANCIAL STATEMENT INFORMATION SELECTED FINANCIAL STATEMENT INFORMATION (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Starting accumulated other comprehensive loss	$ (10,556)
Unrealized gain	14,969
Amortization of unrealized loss on defined benefit pension plan, net of tax	4	$ 7
Ending accumulated other comprehensive loss	4,417
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Starting accumulated other comprehensive loss	(9,533)
Unrealized gain	14,969
Ending accumulated other comprehensive loss	5,436
Pension Benefit Obligation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Starting accumulated other comprehensive loss	(1,023)
Amortization of unrealized loss on defined benefit pension plan, net of tax	4
Ending accumulated other comprehensive loss	$ (1,019)

SELECTED FINANCIAL STATEMENT 37

SELECTED FINANCIAL STATEMENT INFORMATION (Details Textuals) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Oct. 31, 2017
Selected Financial Statement Information (Details) [Abstract]
Accrued customer rebates and credits	$ 14.2		$ 12.9
Total customer rebates and credits deducted within net sales	$ 2.5	$ 2.4

GOODWILL AND OTHER INTANGIBLE38

GOODWILL AND OTHER INTANGIBLE ASSETS (Goodwill) (Details) $ in Thousands	3 Months Ended
	Jan. 31, 2018USD ($)
Goodwill [Line Items]
Opening Balance	$ 1,081,306
Foreign currency translation adjustments	6,267
Goodwill acquired	3,078
Adjustments to goodwill	213
Ending Balance	1,090,864
Flight Support Group [Member]
Goodwill [Line Items]
Opening Balance	388,606
Foreign currency translation adjustments	3,065
Goodwill acquired	0
Adjustments to goodwill	185
Ending Balance	391,856
Electronic Technologies Group [Member]
Goodwill [Line Items]
Opening Balance	692,700
Foreign currency translation adjustments	3,202
Goodwill acquired	3,078
Adjustments to goodwill	28
Ending Balance	$ 699,008

GOODWILL AND OTHER INTANGIBLE39

GOODWILL AND OTHER INTANGIBLE ASSETS (Identifiable Intangible Assets) (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	$ 576,052	$ 570,489
Accumulated Amortization	(180,301)	(166,344)
Net Carrying Amount	395,751	404,145
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Intangible Asset Gross Carrying Amount	711,288	704,425
Intangible Asset Net Carrying Amount	530,987	538,081
Trade Names [Member]
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Gross Carrying Amount	135,236	133,936
Net Carrying Amount	135,236	133,936
Customer Relationships [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	383,294	379,966
Accumulated Amortization	(126,803)	(117,069)
Net Carrying Amount	256,491	262,897
Intellectual Property [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	183,997	181,811
Accumulated Amortization	(48,888)	(44,861)
Net Carrying Amount	135,109	136,950
Licensing Agreements [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	6,559	6,559
Accumulated Amortization	(3,078)	(2,928)
Net Carrying Amount	3,481	3,631
Patents [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	912	870
Accumulated Amortization	(580)	(551)
Net Carrying Amount	332	319
Noncompete Agreements [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	824	817
Accumulated Amortization	(824)	(817)
Net Carrying Amount	0	0
Trade Names [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	466	466
Accumulated Amortization	(128)	(118)
Net Carrying Amount	$ 338	$ 348

GOODWILL AND OTHER INTANGIBLE40

GOODWILL AND OTHER INTANGIBLE ASSETS (Details Textuals) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense related to intangible assets	$ 12.4	$ 9.2
Estimated Amortization Expense, remainder of fiscal year	36.4
Estimated Amortization Expense, for fiscal 2019	46.5
Estimated Amortization Expense, for fiscal 2020	43.6
Estimated Amortization Expense, for fiscal 2021	40.9
Estimated Amortization Expense, for fiscal 2022	35.5
Estimated Amortization Expense, for fiscal 2023	31.3
Estimated Amortization Expense, thereafter	$ 161.6

LONG-TERM DEBT (Details)

LONG-TERM DEBT (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Borrowings under revolving credit facility	$ 666,000	$ 671,000
Capital leases	3,012	2,979
Total debt and capital leases	669,012	673,979
Less: Current maturities of long-term debt	(485)	(451)
Long-term debt, net of current maturities	$ 668,527	$ 673,528

LONG-TERM DEBT (Details Textual

LONG-TERM DEBT (Details Textuals)	Jan. 31, 2018	Oct. 31, 2017
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Weighted average interest rate	2.90%	2.40%

INCOME TAXES (Details Textuals)

INCOME TAXES (Details Textuals) - USD ($) $ in Millions	1 Months Ended	2 Months Ended	3 Months Ended
	Jan. 31, 2018	Dec. 21, 2017	Jan. 31, 2018	Jan. 31, 2017
Income Tax Disclosure [Abstract]
Federal Statutory Income Tax Rate	21.00%	35.00%	23.30%
Remeasurement of Deferred Tax Liabilities for Change in Tax Rate	$ 16.6		$ 16.6
Transition Tax Expense from Unremitted Earnings from Foreign Subsidiaries			$ 4.7
Effective Income Tax Rate, Continuing Operations			4.70%	26.60%

FAIR VALUE MEASUREMENTS (Fair V

FAIR VALUE MEASUREMENTS (Fair Value Hierarchy, by Category) (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Deferred Compensation Plans [Abstract]
Deferred compensation plans	$ 137,834	$ 122,874
Liabilities:
Contingent consideration	24,931	27,573
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	11,119	9,654
Liabilities:
Contingent consideration	0	0
Significant Other Observable Inputs (Level 2) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	126,715	113,220
Liabilities:
Contingent consideration	0	0
Significant Unobservable Inputs (Level 3) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Liabilities:
Contingent consideration	24,931	27,573
Corporate Owned Life Insurance [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	126,715	113,220
Corporate Owned Life Insurance [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Corporate Owned Life Insurance [Member] | Significant Other Observable Inputs (Level 2) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	126,715	113,220
Corporate Owned Life Insurance [Member] | Significant Unobservable Inputs (Level 3) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Money Market Funds [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	4,890	3,972
Money Market Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	4,890	3,972
Money Market Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Money Market Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Equity Securities [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	3,167	2,895
Equity Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	3,167	2,895
Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Equity Funds [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	1,683	1,541
Equity Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	1,683	1,541
Equity Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Equity Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Other Defined Deferred Compensation Plan [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	1,379	1,246
Other Defined Deferred Compensation Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	1,379	1,246
Other Defined Deferred Compensation Plan [Member] | Significant Other Observable Inputs (Level 2) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Other Defined Deferred Compensation Plan [Member] | Significant Unobservable Inputs (Level 3) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	$ 0	$ 0

FAIR VALUE MEASUREMENTS FAIR VA

FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Level 3 Valuation Inputs) (Details) - Fair Value, Inputs, Level 3 [Member]	3 Months Ended
	Jan. 31, 2018
FY 2017 Acquisition [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	5.50%
FY 2017 Acquisition [Member] | Minimum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Negative Long-term Revenue Growth Rate	(8.00%)
FY 2017 Acquisition [Member] | Maximum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	4.00%
FY 2016 Acquisition [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	4.70%
FY 2016 Acquisition [Member] | Minimum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	4.00%
FY 2016 Acquisition [Member] | Maximum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	12.00%
FY 2015 Acquisition [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	0.80%
FY 2015 Acquisition [Member] | Minimum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	9.00%
FY 2015 Acquisition [Member] | Maximum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	13.00%

FAIR VALUE MEASUREMENTS (Contin

FAIR VALUE MEASUREMENTS (Contingent Consideration Liability) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Oct. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in accrued contingent consideration	$ (3,195)
Change in value of contingent consideration	(3,195)	$ 537
Liabilities [Abstract]
Total liabilities	24,931		$ 27,573
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening balance, Liabilities	27,573
Change in value of contingent consideration	(300)
Ending balance, Liabilities	24,931
Liabilities [Abstract]
Accrued Liabilities, Current	7,262
Other Liabilities, Noncurrent	17,669
Total liabilities	24,931		$ 27,573
Foreign Currency Gain (Loss) [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Foreign currency transaction adjustments	$ 853

FAIR VALUE MEASUREMENTS (Detail

FAIR VALUE MEASUREMENTS (Details Textuals) $ in Thousands, € in Millions	3 Months Ended
	Jan. 31, 2018USD ($)	Jan. 31, 2018EUR (€)	Jan. 31, 2018USD ($)	Oct. 31, 2017EUR (€)	Oct. 31, 2017USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities			$ 24,931		$ 27,573
Assets held within irrevocable trusts and classified within other assets			137,834		122,874
Related liabilities of deferred compensation plans, specified as other long-term liabilities			136,500		121,700
Aggregate LCP Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held within irrevocable trusts and classified within other assets			131,600		117,200
Flight Support Group [Member] | FY 2015 Acquisition [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities			10,700		12,600
Fair Value Assumptions, Expected Term	2 years
Flight Support Group [Member] | Euro Member Countries, Euro | FY 2015 Acquisition [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities | €		€ 8.6		€ 10.8
Contingent Consideration Arrangements, Per Year Amount | €		6.1
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | €		€ 12.2
Electronic Technologies Group [Member] | FY 2016 Acquisition [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities			1,100
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			1,700
Fair Value Assumptions, Expected Term	4 years
Payment for Contingent Consideration Liability, Financing Activities	$ 300
Electronic Technologies Group [Member] | FY 2017 Acquisition [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities			13,200
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			20,000
Fair Value Assumptions, Expected Term	6 years
Aggregate LCP Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Related liabilities of deferred compensation plans, specified as other long-term liabilities			$ 130,300		$ 116,000

NET INCOME PER SHARE ATTRIBUT48

NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Numerator:
Net income attributable to HEICO	$ 65,152	$ 40,927
Denominator:
Weighted Average Number of Shares Outstanding, Basic	105,639	105,178
Effect of dilutive stock options	3,473	2,827
Weighted Average Number of Shares Outstanding, Diluted	109,112	108,005
Earnings Per Share, Basic	$ 0.62	$ 0.39
Earnings Per Share, Diluted	$ 0.60	$ 0.38
Anti-dilutive stock options excluded	616	213

OPERATING SEGMENTS (Details)

OPERATING SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Segment Reporting Information [Line Items]
Revenues	$ 404,410	$ 343,432
Depreciation	5,628	5,244
Amortization	13,396	10,004
Operating income	79,560	64,550
Capital expenditures	7,577	6,422
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(5,969)	(3,634)
Depreciation	62	53
Amortization	345	165
Operating income	(9,529)	(5,897)
Capital expenditures	3,537	46
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	254,721	220,901
Depreciation	3,292	3,148
Amortization	4,947	4,104
Operating income	45,869	41,363
Capital expenditures	2,297	3,872
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	155,658	126,165
Depreciation	2,274	2,043
Amortization	8,104	5,735
Operating income	43,220	29,084
Capital expenditures	$ 1,743	$ 2,504

OPERATING SEGMENTS (Details 1)

OPERATING SEGMENTS (Details 1) - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 2,570,442	$ 2,512,431
Other Primarily Corporate and Intersegment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	160,923	130,143
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,051,527	1,042,925
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,357,992	$ 1,339,363

COMMITMENTS AND CONTINGENCIES51

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Schedule of Product Warranties [Line Items]
Balances as of beginning of fiscal year	$ 2,921	$ 3,351
Accruals for warranties	798	782
Standard and Extended Product Warranty Accrual, Additions from Business Acquisition	280
Warranty claims settled	(832)	(619)
Balances as of end of period	$ 3,167	$ 3,514

COMMITMENTS AND CONTINGENCIES52

COMMITMENTS AND CONTINGENCIES (Details Textuals) $ in Millions	Jan. 31, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 4.3

SUBSEQUENT EVENT (Details Textu

SUBSEQUENT EVENT (Details Textuals) - Electronic Technologies Group [Member] - Subsequent Event [Member] - Sensor Tech [Member]	1 Months Ended
	Feb. 28, 2018
Subsequent Event [Line Items]
Subsequent Event, Date	Feb. 28, 2018
Business Acquisition, Percentage of Voting Interests Acquired	85.00%
Name of Acquired Entity	Sensor Technology Engineering, Inc. ("Sensor Technology")
Description of Acquired Entity	Sensor Technology designs and manufactures sophisticated nuclear radiation detectors for law enforcement, homeland security and military applications.
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	15.00%