10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

____________________________________________________________________________________________________________________________________

FORM 10-Q

____________________________________________________________________________________________________________________________________

ý Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended March 31, 2018

OR

¨ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Commission File Number 001-14423

____________________________________________________________________________________________________________________________________

PLEXUS CORP.

(Exact name of registrant as specified in charter)

____________________________________________________________________________________________________________________________________

Wisconsin	39-1344447
(State of Incorporation)	(IRS Employer Identification No.)

One Plexus Way

Neenah, Wisconsin 54957

(Address of principal executive offices)(Zip Code)

Telephone Number (920) 969-6000

(Registrant’s telephone number, including Area Code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ý    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer ý	Accelerated filer ¨	Non-accelerated filer ¨	Smaller reporting company ¨	Emerging growth company ¨
		(Do not check if a smaller reporting company)

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  ý

As of May 1, 2018, there were 32,977,703 shares of Common Stock of the Company outstanding.

PLEXUS CORP.

TABLE OF CONTENTS

March 31, 2018

PART I. FINANCIAL INFORMATION	3
ITEM 1. FINANCIAL STATEMENTS	3
Condensed Consolidated Statements of Comprehensive Income (Loss)	3
Condensed Consolidated Balance Sheets	4
Condensed Consolidated Statements of Cash Flows	5
Notes to Condensed Consolidated Financial Statements	6
ITEM 2. MANAGEMENT'S DICUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	16
"Safe Harbor" Cautionary Statement Under the Private Securities Litigation Reform Act of 1995	16
Overview	16
Results of Operations	17
Liquidity of Capital Resources	22
Contractual Obligations, Commitments and Off-Balance Sheet Obligations	26
Disclosure About Critical Accounting Policies	27
New Accounting Pronouncements	27
ITEM 3. QUANTITATIVE AND QUALITIATIVE DISCLOSURES ABOUT MARKET RISK	28
ITEM 4. CONTROLS AND PROCEDURES	28
PART II. OTHER INFORMATION	29
ITEM 1A. Risk Factors	29
ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds	29
ITEM 6. Exhibits	29
SIGNATURES	30

2

PART I.     FINANCIAL INFORMATION

ITEM 1.    FINANCIAL STATEMENTS

PLEXUS CORP. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(in thousands, except per share data)

Unaudited

	Three Months Ended						Six Months Ended
	March 31, 2018			April 1, 2017			March 31, 2018			April 1, 2017
Net sales	$	698,651		$	604,349		$	1,375,945		$	1,239,368
Cost of sales	645,699			540,549			1,259,470			1,111,212
Gross profit	52,952			63,800			116,475			128,156
Selling and administrative expenses	35,637			31,229			67,603			61,682
Operating income	17,315			32,571			48,872			66,474
Other income (expense):
Interest expense	(3,547		)	(3,262		)	(7,272		)	(6,536		)
Interest income	1,426			1,185			2,981			2,256
Miscellaneous	(477		)	1,925			(823		)	1,251
Income before income taxes	14,717			32,419			43,758			63,445
Income tax expense	2,427			3,124			129,961			5,971
Net income (loss)	$	12,290		$	29,295		$	(86,203	)	$	57,474
Earnings (loss) per share:
Basic	$	0.37		$	0.87		$	(2.57	)	$	1.71
Diluted	$	0.36		$	0.84		$	(2.57	)	$	1.66
Weighted average shares outstanding:
Basic	33,538			33,703			33,552			33,619
Diluted	34,387			34,702			33,552			34,631
Comprehensive income (loss):
Net income (loss)	$	12,290		$	29,295		$	(86,203	)	$	57,474
Other comprehensive income (loss):
Derivative instrument fair value adjustment	1,229			3,159			2,768			(2,244		)
Foreign currency translation adjustments	4,773			2,613			6,915			(8,746		)
Other comprehensive income (loss)	6,002			5,772			9,683			(10,990		)
Total comprehensive income (loss)	$	18,292		$	35,067		$	(76,520	)	$	46,484

The accompanying notes are an integral part of these condensed consolidated financial statements.

3

PLEXUS CORP. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except per share data)

Unaudited

	March 31, 2018			September 30, 2017
ASSETS
Current assets:
Cash and cash equivalents	$	402,470		$	568,860
Restricted cash	845			394
Accounts receivable, net of allowances of $1,029 and $980, respectively	400,262			365,513
Inventories	701,666			654,642
Prepaid expenses and other	32,313			28,046
Total current assets	1,537,556			1,617,455
Property, plant and equipment, net	324,484			314,665
Deferred income tax assets	5,464			5,292
Other	42,470			38,770
Total non-current assets	372,418			358,727
Total assets	$	1,909,974		$	1,976,182
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Current portion of long-term debt and capital lease obligations	$	180,772		$	286,934
Accounts payable	431,659			413,999
Customer deposits	104,914			107,837
Accrued salaries and wages	48,973			49,376
Other accrued liabilities	66,844			49,445
Total current liabilities	833,162			907,591
Long-term debt and capital lease obligations, net of current portion	27,217			26,173
Long-term accrued income taxes payable	91,905			—
Deferred income tax liabilities	19,738			—
Other liabilities	17,449			16,479
Total non-current liabilities	156,309			42,652
Total liabilities	989,471			950,243
Commitments and contingencies
Shareholders’ equity:
Preferred stock, $.01 par value, 5,000 shares authorized, none issued or outstanding	—			—
Common stock, $.01 par value, 200,000 shares authorized, 52,435 and 51,934 shares issued, respectively, and 33,293 and 33,464 shares outstanding, respectively	524			519
Additional paid-in capital	567,535			555,297
Common stock held in treasury, at cost, 19,142 and 18,470 shares, respectively	(615,263		)	(574,104		)
Retained earnings	963,003			1,049,206
Accumulated other comprehensive income (loss)	4,704			(4,979		)
Total shareholders’ equity	920,503			1,025,939
Total liabilities and shareholders’ equity	$	1,909,974		$	1,976,182

The accompanying notes are an integral part of these condensed consolidated financial statements.

4

PLEXUS CORP. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

Unaudited

	Six Months Ended
	March 31, 2018			April 1, 2017
Cash flows from operating activities
Net (loss) income	$	(86,203	)	$	57,474
Adjustments to reconcile net (loss) income to net cash flows from operating activities:
Depreciation	23,602			22,489
Amortization of deferred financing fees	156			155
Gain on sale of property, plant and equipment, net	(201		)	(329		)
Deferred income taxes	22,326			1
Share-based compensation expense	8,420			8,013
Changes in operating assets and liabilities:
Accounts receivable	(32,326		)	92,751
Inventories	(42,781		)	(49,325		)
Other current and noncurrent assets	(4,766		)	(5,711		)
Accrued income taxes payable	102,220			171
Accounts payable	15,611			(11,719		)
Customer deposits	(3,680		)	(594		)
Other current and noncurrent liabilities	463			(7,769		)
Cash flows provided by operating activities	2,841			105,607
Cash flows from investing activities
Payments for property, plant and equipment	(29,115		)	(14,621		)
Proceeds from sales of property, plant and equipment	273			427
Cash flows used in investing activities	(28,842		)	(14,194		)
Cash flows from financing activities
Borrowings under credit facility and other short-term borrowings	504,616			97,926
Payments on debt and capital lease obligations	(612,961		)	(84,745		)
Repurchases of common stock	(41,159		)	(13,906		)
Proceeds from exercise of stock options	9,194			9,883
Payments related to tax withholding for share-based compensation	(5,371		)	(5,833		)
Cash flows (used in) provided by financing activities	(145,681		)	3,325
Effect of exchange rate changes on cash and cash equivalents	5,743			(2,724		)
Net (decrease) increase in cash and cash equivalents and restricted cash	(165,939		)	92,014
Cash and cash equivalents and restricted cash:
Beginning of period	569,254			432,964
End of period	$	403,315		$	524,978

The accompanying notes are an integral part of these condensed consolidated financial statements.

5

PLEXUS CORP. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

FOR THE THREE AND SIX MONTHS ENDED MARCH 31, 2018 AND APRIL 1, 2017

Unaudited

1.    Basis of Presentation

Basis of Presentation:

The accompanying Condensed Consolidated Financial Statements included herein have been prepared by Plexus Corp. and its subsidiaries (together “Plexus” or the “Company”) without audit and pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (“SEC”). The accompanying Condensed Consolidated Financial Statements reflect all adjustments, which include normal recurring adjustments necessary for the fair statement of the consolidated financial position of the Company as of March 31, 2018 and September 30, 2017, and the results of operations for the three and six months ended March 31, 2018 and April 1, 2017, and the cash flows for the same six month periods.

The Company’s fiscal year ends on the Saturday closest to September 30. The Company uses a “4-4-5” weekly accounting system for the interim periods in each quarter. Each quarter, therefore, ends on a Saturday at the end of the 4-4-5 period. Periodically, an additional week must be added to the fiscal year to re-align with the Saturday closest to September 30. All fiscal quarters presented herein included 13 weeks.

Certain information and footnote disclosures, normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"), have been condensed or omitted pursuant to the SEC’s rules and regulations dealing with interim financial statements. However, the Company believes that the disclosures made in the Condensed Consolidated Financial Statements included herein are adequate to make the information presented not misleading. It is suggested that these Condensed Consolidated Financial Statements be read in conjunction with the Consolidated Financial Statements and notes thereto included in the Company’s 2017 Annual Report on Form 10-K.

Certain prior period amounts have been reclassified to conform to the current period presentation.

Recently Issued Accounting Pronouncements Not Yet Adopted:

In August 2017, the Financial Accounting Standards Board (the "FASB") issued ASU 2017-12 related to the accounting for hedging activities. The pronouncement expands and refines hedge accounting, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. This guidance is effective for the Company beginning in the first quarter of fiscal year 2020 and early adoption is permitted. The Company is finalizing its assessment of the impact of the guidance, but does not believe it will have a material impact on the Company's Condensed Consolidated Financial Statements.

In October 2016, the FASB issued ASU 2016-16 related to the income tax consequences of intra-entity transfers of assets other than inventory. The new standard eliminates the exception for an intra-entity transfer of an asset other than inventory and requires an entity to recognize the income tax consequences when the transfer occurs. This guidance is effective for the Company beginning in the first quarter of fiscal year 2019 and early adoption is permitted. This guidance should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company is currently assessing the impact this new standard may have on its Condensed Consolidated Financial Statements.

In August 2016, the FASB issued ASU 2016-15 related to the classification of certain cash receipts and cash payments, which clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows. The new standard addresses certain issues where diversity in practice was identified. It also amends existing guidance, which is principles based and often requires judgment to determine the appropriate classification of cash flows as operating, investing or financing activities and clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. This guidance is effective for the Company beginning in the first quarter of fiscal year 2019. Early adoption is permitted. The Company is currently assessing the impact this new standard may have on its Condensed Consolidated Statements of Cash Flows.

In February 2016, the FASB issued ASU 2016-02, which requires lessees to recognize most leases on their balance sheets but record expenses on their income statements in a manner similar to current accounting. For lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. This guidance is effective for the Company beginning in the first quarter of fiscal year 2020. Early adoption is permitted. The Company is currently in the process of

6

assessing the impact of the adoption of the new standard on its Condensed Consolidated Financial Statements and the timing of adoption.

In May 2014, the FASB issued ASU 2014-09, which requires an entity to recognize revenue relating to contracts with customers that depicts the transfer of promised goods or services to customers in an amount reflecting the consideration to which the entity expects to be entitled in exchange for such goods or services ("Topic 606"). Topic 606 also requires disclosures enabling users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers and is effective for the Company beginning in the first quarter of fiscal year 2019.

The Company developed a comprehensive project plan that includes a global cross-functional team of representatives to conduct an assessment of Topic 606 and its potential impacts on the Company. The project plan includes analyzing the standard’s impact on the Company’s various revenue streams, comparing its historical accounting policies and practices to the requirements of the new standard, and identifying potential differences from applying the requirements of the new standard to its contracts. The Company is in the process of identifying and implementing appropriate changes to its current accounting policies, business processes, systems and controls to support revenue recognition and disclosures under Topic 606.

The Company has determined that the new standard will result in a change to the timing of revenue recognition for a significant portion of the Company's revenue, whereby revenue will be recognized "over time," as products are produced, as opposed to at a "point in time" upon physical delivery. The new standard is expected to have a material impact on the Company's consolidated financial statements upon initial adoption, primarily as the Company recognizes an increase in contract assets for unbilled receivables with a corresponding reduction in finished goods and work-in-process inventory. The Company expects to adopt Topic 606 at the beginning of fiscal year 2019 using the modified retrospective approach.

The Company believes that no other recently issued accounting standards will have a material impact on its Consolidated Financial Statements, or apply to its operations.

2.    Inventories

Inventories as of March 31, 2018 and September 30, 2017 consisted of the following (in thousands):

	March 31, 2018		September 30, 2017
Raw materials	$	526,709	$	477,921
Work-in-process	89,437		86,367
Finished goods	85,520		90,354
Total inventories	$	701,666	$	654,642

In certain circumstances, per contractual terms, customer deposits are received by the Company to offset obsolete and excess inventory risks. The total amount of customer deposits related to inventory and included within current liabilities on the accompanying Condensed Consolidated Balance Sheets as of March 31, 2018 and September 30, 2017 was $102.2 million and $106.2 million, respectively.

3.Debt, Capital Lease Obligations and Other Financing

Debt, capital lease and other obligations as of March 31, 2018 and September 30, 2017, consisted of the following (in thousands):

	March 31, 2018			September 30, 2017
5.20% Senior notes, due June 15, 2018	$	175,000		$	175,000
Borrowings under the credit facility	—			108,000
Capital lease and other financing obligations	33,626			30,901
Unamortized deferred financing fees	(637		)	(794		)
Total obligations	207,989			313,107
Less: current portion	(180,772		)	(286,934		)
Long-term debt and capital lease obligations, net of current portion	$	27,217		$	26,173

7

The Company has outstanding 5.20% Senior Notes, due on June 15, 2018 (the "Notes"). As of March 31, 2018 and September 30, 2017, $175.0 million was outstanding. The related Note Purchase Agreement contains certain financial covenants, which include a maximum total leverage ratio, a minimum interest coverage ratio and a minimum net worth test, all as defined in the agreement. As of March 31, 2018, the Company was in compliance with all such covenants relating to the Notes and the Note Purchase Agreement.

The Company also has a senior unsecured revolving credit facility (the "Credit Facility"), with a $300.0 million maximum commitment that expires on July 5, 2021. The Credit Facility may be further increased to $500.0 million, generally by mutual agreement of the Company and the lenders, subject to certain customary conditions. During the six months ended March 31, 2018, the highest daily borrowing was $208.0 million; the average daily borrowings were $108.5 million and the Company borrowed an aggregate of $503.5 million and repaid a total of $611.5 million of revolving borrowings under the Credit Facility. The Company was in compliance with all financial covenants relating to the Credit Agreement, which are generally consistent with those in the Note Purchase Agreement discussed above. The Company is required to pay a commitment fee on the daily unused revolver credit commitment based on the Company's leverage ratio; the fee was assessed at an annual rate of 0.175%, payable quarterly, as of March 31, 2018.

The fair value of the Company’s debt, excluding capital leases, was $176.4 million and $284.5 million as of March 31, 2018 and September 30, 2017, respectively. The carrying value of the Company's debt, excluding capital leases, was $175.0 million and $283.0 million as of March 31, 2018 and September 30, 2017, respectively. If measured at fair value in the financial statements, the Company's debt would be classified as Level 2 in the fair value hierarchy. Refer to Note 4, "Derivatives," for further information regarding the Company's fair value calculations and classifications.

4.    Derivatives

Derivatives:

All derivatives are recognized in the accompanying Condensed Consolidated Balance Sheets at their estimated fair value. The Company uses derivatives to manage the variability of foreign currency obligations. The Company has cash flow hedges related to variable rate debt and forecasted foreign currency obligations, in addition to non-designated hedges to manage foreign currency exposures associated with certain foreign currency denominated assets and liabilities. The Company does not enter into derivatives for speculative purposes.

U.S. GAAP, requires companies to recognize all derivative instruments as either assets or liabilities at fair value in the statement of financial position. Accordingly, the Company designates some foreign currency exchange contracts as cash flow hedges of forecasted foreign currency expenses.

Changes in the fair value of the derivatives that qualify as cash flow hedges are recorded in "Accumulated other comprehensive income (loss)" in the accompanying Condensed Consolidated Balance Sheets until earnings are affected by the variability of the cash flows. In the next twelve months, the Company estimates that $5.0 million of unrealized gains, net of tax, related to cash flow hedges will be reclassified from other comprehensive income (loss) into earnings. Changes in the fair value of the non-designated derivatives related to recognized foreign currency denominated assets and liabilities are recorded in "Miscellaneous other income (expense)" in the accompanying Condensed Consolidated Statements of Comprehensive Income (Loss).

The Company enters into forward currency exchange contracts for its Malaysian operations on a rolling basis. The Company had cash flow hedges outstanding with a notional value of $67.6 million as of March 31, 2018 and $67.0 million as of September 30, 2017. These forward currency contracts fix the exchange rates for the settlement of future foreign currency obligations that have yet to be realized. The total fair value of the forward currency exchange contracts was a $5.0 millionasset as of March 31, 2018 and a $2.0 million asset as of September 30, 2017.

The Company had additional forward currency exchange contracts outstanding as of March 31, 2018, with a notional value of $25.9 million; there were $10.6 million such contracts outstanding as of September 30, 2017. The Company did not designate these derivative instruments as hedging instruments. In accordance with U.S. GAAP, the net settlement amount (fair value) related to these contracts is recorded on the Condensed Consolidated Balance Sheets as either a current or long-term asset or liability, depending on the term. The change in fair value is recorded as an element of "Miscellaneous other income (expense)" within the Condensed Consolidated Statements of Comprehensive Income (Loss). The total fair value of these derivatives was a $0.1 millionasset as of March 31, 2018, and a $0.1 millionliability as of September 30, 2017.

8

The tables below present information regarding the fair values of derivative instruments and the effects of derivative instruments on the Company’s Condensed Consolidated Financial Statements:

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		March 31, 2018		September 30, 2017			March 31, 2018		September 30, 2017
Derivatives designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Forward currency forward contracts	Prepaid expenses and other	$	4,952	$	2,024	Other accrued liabilities	$	—	$	—

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		March 31, 2018		September 30, 2017			March 31, 2018		September 30, 2017
Derivatives not designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Forward currency forward contracts	Prepaid expenses and other	$	159	$	35	Other accrued liabilities	$	65	$	118

Derivative Impact on Accumulated Other Comprehensive Income (Loss)
for the Three Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) ("OCI") on Derivatives (Effective Portion)
	March 31, 2018		April 1, 2017
Forward currency forward contracts	$	3,625	$	1,175
Interest rate swaps	$	—	$	12

Derivative Impact on Gain (Loss) Recognized in Income
for the Three Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Classification of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
		March 31, 2018		April 1, 2017
Forward currency forward contracts	Selling and administrative expenses	$	224	$	(193	)
Forward currency forward contracts	Cost of sales	$	2,091	$	(1,843	)
Treasury Rate Locks	Interest expense	$	81	$	92
Interest rate swaps	Interest expense	$	—	$	(28	)

Derivatives Not Designated as Hedging Instruments	Location of (Loss) Gain Recognized on Derivatives in Income	Amount of (Loss) Gain on Derivatives Recognized in Income
		March 31, 2018			April 1, 2017
Forward currency forward contracts	Miscellaneous other income (expense)	$	(416	)	$	1,786

Derivative Impact on Accumulated Other Comprehensive Income (Loss)
for the Six Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in OCI on Derivatives (Effective Portion)
	March 31, 2018		April 1, 2017
Forward currency forward contracts	$	6,339	$	(4,043	)
Interest rate swaps	$	—	$	1

9

Derivative Impact on Gain (Loss) Recognized in Income
for the Six Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Classification of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
		March 31, 2018		April 1, 2017
Forward currency forward contracts	Selling and administrative expenses	$	329	$	(172	)
Forward currency forward contracts	Cost of sales	$	3,082	$	(1,662	)
Treasury Rate Locks	Interest expense	$	160	$	171
Interest rate swaps	Interest expense	$	—	$	(135	)

Derivatives Not Designated as Hedging Instruments	Location of (Loss) Gain Recognized on Derivatives in Income	Amount of (Loss) Gain on Derivatives Recognized in Income
		March 31, 2018			April 1, 2017
Forward currency forward contracts	Miscellaneous other income (expense)	$	(951	)	$	1,861

There were no gains or losses recognized in income for derivatives related to ineffective portions and amounts excluded from effectiveness testing for the three or six months ended March 31, 2018 and April 1, 2017.

Fair Value Measurements:

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (or exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The Company uses quoted market prices when available or discounted cash flows to calculate fair value. The accounting guidance establishes a fair value hierarchy based on three levels of inputs that may be used to measure fair value. The input levels are:

Level 1:  Quoted (observable) market prices in active markets for identical assets or liabilities.

Level 2:  Inputs other than Level 1 that are observable, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability.

Level 3:  Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability.

The following table lists the fair values of assets (liabilities) of the Company’s derivatives as of March 31, 2018 and September 30, 2017, by input level:

Fair Value Measurements Using Input Levels Asset/(Liability)
In thousands of dollars
March 31, 2018	Level 1		Level 2		Level 3		Total
Derivatives
Forward currency forward contracts	$	—	$	5,046	$	—	$	5,046
September 30, 2017
Derivatives
Forward currency forward contracts	$	—	$	1,941	$	—	$	1,941

The fair value of interest rate swaps and foreign currency forward contracts is determined using a market approach, which includes obtaining directly or indirectly observable values from third parties active in the relevant markets. The primary input in the fair value of the interest rate swaps is the relevant LIBOR forward curve. Inputs in the fair value of the foreign currency forward contracts include prevailing forward and spot prices for currency and interest rate forward curves.

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5.    Income Taxes

On December 22, 2017, the U.S. Tax Cuts & Jobs Act was enacted ("Tax Reform"). Due to the complexities in implementing Tax Reform, the SEC issued Staff Accounting Bulletin 118, which allows the Company to record a provisional tax expense when uncertainty or other factors may impact the final outcome. In accordance with U.S. GAAP, which requires the Company to recognize the effects of Tax Reform in the period of enactment, $124.5 million of tax expense was recorded during the three months ended December 30, 2017. The $124.5 million included $101.8 million of U.S. federal and state taxes on the deemed repatriation of undistributed foreign earnings, which are payable over an eight year period beginning in fiscal 2019, and $22.7 million of foreign withholding taxes due to a change in the Company's permanently reinvested assertion on certain foreign earnings that are payable upon repatriation to the U.S. The Company continues to believe this is a reasonable estimate of tax expense related to Tax Reform using all analyses, interpretations and guidance available at this time. The Company continues to assess the impact of Tax Reform, and the final impact may differ from this estimate, perhaps materially, due to, among other things, changes in interpretations, assumptions, and/or guidance that may be issued in the near future or actions the Company may take as a result. For the three months ended March 31, 2018, there have been no changes in interpretations, assumptions and/or guidance that require an adjustment to the provisional tax expense the Company recorded during the three months ended December 30, 2017.

As of March 31, 2018, the Company reported outstanding liabilities of $121.8 million for Tax Reform, of which $91.9 million is recorded in "Long-term accrued income taxes payable", $20.0 million is recorded in "Deferred income tax liabilities" and $9.9 million is recorded in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheet. The total outstanding liabilities are lower than the Tax Reform expense of $124.5 million for the three months ended December 30, 2017 due to withholding taxes paid on dividends and the related foreign exchange impact during the three months ended March 31, 2018, which are recorded in "Miscellaneous other income (expense)" in the accompanying Condensed Consolidated Statements of Comprehensive Income (Loss).

Income tax expense for the three and six months ended March 31, 2018 was $2.4 million and $130.0 million, respectively. For the six months ended March 31, 2018, the tax expense of $130.0 million includes $124.5 million due to the impact of Tax Reform recorded during the three months ended December 30, 2017. Income tax expense for the three and six months ended April 1, 2017 was $3.1 million and $6.0 million, respectively.

The effective tax rates for the three and six months ended March 31, 2018 were 16.5% and 297.0%, respectively, compared to the effective tax rates of 9.6% and 9.4% for the three and six months ended April 1, 2017, respectively. The effective tax rate for the three months ended March 31, 2018 increased from the effective tax rate for the three months ended April 1, 2017, primarily due to a $13.5 million one-time bonus paid to full-time, non-executive employees ("one-time employee bonus") during the three months ended March 31, 2018, and a decrease in pre-tax earnings in jurisdictions where the Company maintains a valuation allowance. The effective tax rate for the six months ended March 31, 2018 increased from the effective tax rate for the six months ended April 1, 2017, primarily due to the impact of Tax Reform, the one-time employee bonus and a decrease in pre-tax earnings in jurisdictions where the Company maintains a valuation allowance.

There were no material additions to the amount of unrecognized tax benefits recorded for uncertain tax positions as of March 31, 2018, as compared to September 30, 2017. The Company recognizes accrued interest and penalties on uncertain tax positions as a component of income tax expense. The amount of interest and penalties recorded for the three and six months ended March 31, 2018 was not material.

One or more uncertain tax positions may be settled within the next 12 months. Settlement of these matters is not expected to have a material effect on the Company's consolidated results of operations, financial position and cash flows. The Company is not currently under examination by taxing authorities in the U.S. or any foreign jurisdictions in which the Company operates.

The Company maintains valuation allowances when it is more likely than not that all or a portion of a net deferred tax asset will not be realized. During the three months ended March 31, 2018, the Company continued to record a full valuation allowance against its net deferred tax assets in certain jurisdictions within the AMER and EMEA segments, as it was more likely than not that these assets would not be fully realized based primarily on historical performance. The Company will continue to provide a valuation allowance against its net deferred tax assets in each of the applicable jurisdictions going forward until it determines it is more likely than not that the deferred tax assets will be realized.

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6.    Earnings Per Share

The following is a reconciliation of the amounts utilized in the computation of basic and diluted earnings per share for the three and six months ended March 31, 2018 and April 1, 2017 (in thousands, except per share amounts):

	Three Months Ended				Six Months Ended
	March 31, 2018		April 1, 2017		March 31, 2018			April 1, 2017
Net income (loss)	$	12,290	$	29,295	$	(86,203	)	$	57,474
Basic weighted average common shares outstanding	33,538		33,703		33,552			33,619
Dilutive effect of share-based awards outstanding	849		999		—			1,012
Diluted weighted average shares outstanding	34,387		34,702		33,552			34,631
Earnings (loss) per share:
Basic	$	0.37	$	0.87	$	(2.57	)	$	1.71
Diluted	$	0.36	$	0.84	$	(2.57	)	$	1.66

For the three and six months ended March 31, 2018, share-based awards for approximately 0.3 million shares were not included in the computation of diluted earnings per share as they were antidilutive. For the six months endedMarch 31, 2018, the total number of potentially dilutive share-based awards was 2.0 million. However, these awards were not included in the computation of diluted loss per share, as doing so would have decreased the loss per share.

For the three and six months ended April 1, 2017, share-based awards for approximately 0.1 million and 0.9 million shares, respectively, were not included in the computation of diluted earnings per share as they were antidilutive.

See also Note 11, "Shareholders' Equity," for information regarding the Company's share repurchase plans.

7.    Share-Based Compensation

The Company recognized $4.5 million and $8.4 million of compensation expense associated with the share-based awards for the three and six months ended March 31, 2018, respectively, and $4.4 million and $8.0 million for the three and six months ended April 1, 2017, respectively.

The Company uses the Black-Scholes valuation model to determine the fair value of stock options and stock-settled stock appreciation rights ("SARs"). The Company uses its stock price on grant date as the fair value assigned to restricted stock units ("RSUs").

Performance stock units ("PSUs") are payable in shares of the Company's common stock. Beginning for fiscal 2017 grants, PSUs vest based on the relative total shareholder return ("TSR") of the Company's common stock as compared to the companies in the Russell 3000 index, a market condition, and the Company's economic return performance during the three year performance period, a performance condition. The Company uses the Monte Carlo valuation model to determine the fair value of PSUs at the date of grant for PSUs that vest based on the relative TSR of the Company's common stock. The Company uses its stock price on grant date as the fair value assigned to PSUs that vest based on the Company's economic return performance. The PSUs granted in fiscal 2016 and prior years vest based solely on the relative TSR of the Company's common stock as compared to companies in the Russell 3000 Index during a three year performance period. The number of shares that may be issued pursuant to PSUs ranges from zero to 0.4 million and is dependent upon the Company's TSR and economic return performance over the applicable performance periods.

The Company recognizes share-based compensation expense over the share-based awards' vesting period.

8.    Litigation

The Company is party to lawsuits in the ordinary course of business. Although the outcome of these legal matters cannot be predicted with certainty, management does not expect that these proceedings, individually or in the aggregate, will have a material positive or adverse effect on the Company’s consolidated financial position, results of operations or cash flows.

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9.    Reportable Segments

The Company uses an internal management reporting system, which provides important financial data to the chief operating decision maker to evaluate performance and allocate the Company’s resources on a regional basis. Net sales for segments are attributed to the region in which the product is manufactured or the service is performed. The services provided, manufacturing processes used, class of customers serviced and order fulfillment processes used are similar and generally interchangeable across the segments. A segment’s performance is evaluated based upon its operating income (loss). A segment’s operating income (loss) includes its net sales less cost of sales and selling and administrative expenses, but excludes corporate and other expenses. Corporate and other expenses primarily represent corporate selling and administrative expenses, and restructuring and other charges, if any, such as the one-time employee bonus. These costs are not allocated to the segments, as management excludes such costs when assessing the performance of the segments. Inter-segment transactions are generally recorded at amounts that approximate arm’s length transactions. The accounting policies for the segments are the same as for the Company taken as a whole.

Information about the Company’s three reportable segments for the three and six months ended March 31, 2018 and April 1, 2017, respectively, is as follows (in thousands):

	Three Months Ended						Six Months Ended
	March 31, 2018			April 1, 2017			March 31, 2018			April 1, 2017
Net sales:
AMER	$	301,835		$	272,064		$	600,878		$	586,715
APAC	350,375			309,758			696,498			619,727
EMEA	73,942			44,975			137,774			84,424
Elimination of inter-segment sales	(27,501		)	(22,448		)	(59,205		)	(51,498		)
	$	698,651		$	604,349		$	1,375,945		$	1,239,368
Operating income (loss):
AMER	$	10,702		$	8,229		$	21,225		$	23,026
APAC	49,171			50,484			99,703			98,724
EMEA	389			(1,221		)	(732		)	(3,456		)
Corporate and other costs	(42,947		)	(24,921		)	(71,324		)	(51,820		)
	$	17,315		$	32,571		$	48,872		$	66,474
Other income (expense):
Interest expense	(3,547		)	(3,262		)	(7,272		)	(6,536		)
Interest income	1,426			1,185			2,981			2,256
Miscellaneous	(477		)	1,925			(823		)	1,251
Income before income taxes	$	14,717		$	32,419		$	43,758		$	63,445

	March 31, 2018		September 30, 2017
Total assets:
AMER	$	599,331	$	595,851
APAC	984,816		1,163,111
EMEA	190,426		172,830
Corporate and eliminations	135,401		44,390
	$	1,909,974	$	1,976,182

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10.    Guarantees

The Company offers certain indemnifications under its customer manufacturing agreements. In the normal course of business, the Company may from time to time be obligated to indemnify its customers or its customers’ customers against damages or liabilities arising out of the Company’s negligence, misconduct, breach of contract, or infringement of third party intellectual property rights. Certain agreements have extended broader indemnification, and while most agreements have contractual limits, some do not. However, the Company generally does not provide for such indemnities and seeks indemnification from its customers for damages or liabilities arising out of the Company’s adherence to customers’ specifications or designs or use of materials furnished, or directed to be used, by its customers. The Company does not believe its obligations under such indemnities are material.

In the normal course of business, the Company also provides its customers a limited warranty covering workmanship, and in some cases materials, on products manufactured by the Company. Such warranty generally provides that products will be free from defects in the Company’s workmanship and meet mutually agreed-upon specifications for periods generally ranging from 12 months to 24 months. If a product fails to comply with the Company’s limited warranty, the Company’s obligation is generally limited to correcting, at its expense, any defect by repairing or replacing such defective product. The Company’s warranty generally excludes defects resulting from faulty customer-supplied components, customer design defects or damage caused by any party other than the Company.

The Company provides for an estimate of costs that may be incurred under its limited warranty at the time product revenue is recognized and establishes additional reserves for specifically identified product issues. These costs primarily include labor and materials, as necessary, associated with repair or replacement and are included in the Company's accompanying Condensed Consolidated Balance Sheets in "Other accrued liabilities." The primary factors that affect the Company’s warranty liability include the value and the number of shipped units and historical and anticipated rates of warranty claims. As these factors are impacted by actual experience and future expectations, the Company assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary.

Below is a table summarizing the activity related to the Company’s limited warranty liability for the six months endedMarch 31, 2018 and April 1, 2017 (in thousands):

	Six Months Ended
	March 31, 2018			April 1, 2017
Reserve balance, beginning of period	$	4,756		$	6,109
Accruals for warranties issued during the period	2,131			869
Settlements (in cash or in kind) during the period	(1,579		)	(1,799		)
Reserve balance, end of period	$	5,308		$	5,179

11.    Shareholders' Equity

On June 6, 2016, the Board of Directors approved a multi-year stock repurchase program under which the Company is authorized to repurchase up to $150.0 million of its common stock (the "2016 Share Repurchase Plan"). During the three months endedMarch 31, 2018, the Company repurchased 512,943 shares for approximately $31.6 million, at an average price of $61.63 per share. During the six months endedMarch 31, 2018, the company repurchased 671,409 shares for approximately $41.2 million at an average price of $61.30 per share. During the three months endedApril 1, 2017, the Company repurchased 123,082 shares for approximately $6.8 million, at an average price of $55.61 per share. During the six months endedApril 1, 2017, the company repurchased 267,811 shares for approximately $13.9 million at an average price of $51.93 per share.

All of the purchases under the 2016 Share Repurchase Plan were recorded as treasury stock.

On February 14, 2018, the Board of Directors approved a new stock repurchase plan under which the Company is authorized to repurchase $200.0 million of its common stock commencing upon completion of the 2016 Share Repurchase Plan (the "2018 Share Repurchase Plan"). No purchases have yet been made under the 2018 Share Repurchase Plan.

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12.    Trade Accounts Receivable Sale Programs

The Company has Master Accounts Receivable Purchase Agreements with The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch (the "BTMU RPA") and HSBC Bank (China) Company Limited, Xiamen branch (the "HSBC RPA") under which the Company may elect to sell receivables, at a discount, on an ongoing basis. As of March 31, 2018, the maximum facility amounts of these uncommitted facilities were $160.0 million and $60.0 million, respectively. The BTMU RPA is subject to expiration on October 3, 2018, but will be automatically extended each year unless any party gives no less than 10 days prior notice that the agreement should not be extended. The terms of the HSBC RPA are generally consistent with the terms of the BTMU RPA discussed above.

The Company previously sold receivables under a former trade accounts receivable sale program that expired during the first fiscal quarter of 2017.

Receivables sold under the programs are excluded from accounts receivable on the Condensed Consolidated Balance Sheets and are reflected as cash provided by operating activities on the Condensed Consolidated Statements of Cash Flows. Proceeds from the transfer reflect the face value of the receivables less a discount. The sale discount is recorded within "Miscellaneous other income (expense)" in the Condensed Consolidated Statements of Comprehensive Income (Loss) in the period of the sale.

The Company sold $135.9 million and $91.5 million of trade accounts receivable under these programs during the three months endedMarch 31, 2018 and April 1, 2017, respectively, in exchange for cash proceeds of $135.2 million and $91.1 million, respectively.

The Company sold $298.3 million and $169.3 million of trade accounts receivable during the six months endedMarch 31, 2018 and April 1, 2017, respectively, in exchange for cash proceeds of $296.7 million and $168.5 million, respectively.

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ITEM 2.     MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

"SAFE HARBOR" CAUTIONARY STATEMENT UNDER THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995:

The statements contained in this Form 10-Q that are guidance or which are not historical facts (such as statements in the future tense and statements including believe, expect, intend, plan, anticipate, goal, target and similar terms and concepts), including all discussions of periods which are not yet completed, are forward-looking statements that involve risks and uncertainties. These risks and uncertainties include, but are not limited to: the risk of customer delays, changes, cancellations or forecast inaccuracies in both ongoing and new programs; the lack of visibility of future orders, particularly in view of changing economic conditions; the economic performance of the industries, sectors and customers we serve; the effects of the volume of revenue from certain sectors or programs on our margins in particular periods; our ability to secure new customers, maintain our current customer base and deliver product on a timely basis; the particular risks relative to new or recent customers, programs or services, which risks include customer and other delays, start-up costs, potential inability to execute, the establishment of appropriate terms of agreements, and the lack of a track record of order volume and timing; the risks of concentration of work for certain customers; the effect of start-up costs of new programs and facilities; possible unexpected costs and operating disruption in transitioning programs, including transitions between Company facilities; the risk that new program wins and/or customer demand may not result in the expected revenue or profitability; the fact that customer orders may not lead to long-term relationships; our ability to manage successfully and execute a complex business model characterized by high product mix, low volumes and demanding quality, regulatory, and other requirements; the ability to realize anticipated savings from restructuring or similar actions, as well as the adequacy of related charges as compared to actual expenses; increasing regulatory and compliance requirements; risks related to information technology systems and data security; the effects of U.S. Tax Reform and of related foreign jurisdiction tax developments; current or potential future barriers to the repatriation of funds that are currently held outside the United States as a result of actions taken by other countries or otherwise; the potential effects of jurisdictional results on our taxes, tax rates, and our ability to use deferred tax assets and net operating losses; the effects of shortages and delays in obtaining components as a result of economic cycles or natural disasters; the risks associated with excess and obsolete inventory, including the risk that inventory purchased on behalf of our customers may not be consumed or otherwise paid for by the customer, resulting in an inventory write-off; the weakness of areas of the global economy; the effect of changes in the pricing and margins of products; raw materials and component cost fluctuations; the potential effect of fluctuations in the value of the currencies in which we transact business; the effects of changes in economic conditions, political conditions, tariffs, other trade protection measures, and tax matters in the United States and in the other countries in which we do business (including as a result of the United Kingdom’s pending exit from the European Union); the potential effect of other world or local events or other events outside our control (such as changes in energy prices, terrorism and weather events); the impact of increased competition; changes in financial accounting standards; and other risks detailed herein and in our other Securities and Exchange Commission filings (particularly in "Risk Factors" in our fiscal 2017 Form 10-K).

*    *    *

OVERVIEW

Plexus Corp. and its subsidiaries (together “Plexus,” the “Company,” or "we") participate in the Electronic Manufacturing Services ("EMS") industry. Since 1979, Plexus has been partnering with companies to create the products that build a better world. We are a team of over 17,000 employees, providing global support for all facets of the product realization process – Design and Development, Supply Chain Solutions, New Product Introduction, Manufacturing, and Aftermarket Services – to companies in the Healthcare/Life Sciences, Industrial/Commercial, Communications and Aerospace/Defense market sectors. Plexus is an industry leader that specializes in serving customers with complex products used in demanding regulatory environments in the Americas ("AMER"), Asia-Pacific ("APAC") and Europe, Middle East, and Africa ("EMEA") regions. With a culture built around innovation and customer service, Plexus’ teams create customized end-to-end solutions to assure the realization of the most intricate products.

The following information should be read in conjunction with our Condensed Consolidated Financial Statements included herein, the “Risk Factors” section in Part I, Item 1A of our annual report on Form 10-K for the fiscal year ended September 30, 2017, and our “Safe Harbor” Cautionary Statement included above.

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RESULTS OF OPERATIONS

Consolidated Performance Summary. The following table presents selected consolidated financial data (dollars in millions, except per share data):

	Three Months Ended						Six Months Ended
	March 31, 2018			April 1, 2017			March 31, 2018			April 1, 2017
Net sales	$	698.7		$	604.3		$	1,375.9		$	1,239.4
Cost of sales	645.7			540.5			1,259.4			1,111.2
Gross profit	53.0			63.8			116.5			128.2
Gross margin	7.6		%	10.6		%	8.5		%	10.3		%
Operating income	17.3			32.6			48.9			66.5
Operating margin	2.5		%	5.4		%	3.6		%	5.4		%
Net income (loss)	12.3			29.3			(86.2		)	57.5
Diluted earnings (loss) per share	$	0.36		$	0.84		$	(2.57	)	$	1.66
Return on invested capital*							15.6		%	16.8		%
Economic return*							6.1		%	6.3		%
*Non-GAAP metric; refer to "Return on Invested Capital ("ROIC") and Economic Return" below for more information and Exhibit 99.1 for a reconciliation.

Net sales. For the three months endedMarch 31, 2018, net sales increased$94.4 million, or 15.6%, as compared to the three months endedApril 1, 2017. For the six months endedMarch 31, 2018, net sales increased$136.5 million, or 11.0%, as compared to the six months endedApril 1, 2017.

Net sales are analyzed by management by geographic segment, which reflects the Company's reportable segments, and by market sector. Management measures operational performance and allocates resources on a geographic segment basis. The Company’s global business development strategy is based on our targeted market sectors.

A discussion of net sales by reportable segment is presented below (in millions):

	Three Months Ended						Six Months Ended
	March 31, 2018			April 1, 2017			March 31, 2018			April 1, 2017
Net sales:
AMER	$	301.8		$	272.1		$	600.8		$	586.7
APAC	350.4			309.8			696.5			619.7
EMEA	74.0			45.0			137.8			84.4
Elimination of inter-segment sales	(27.5		)	(22.6		)	(59.2		)	(51.4		)
Total net sales	$	698.7		$	604.3		$	1,375.9		$	1,239.4

AMER. Net sales for the three months endedMarch 31, 2018, in the AMER segment increased$29.7 million, or 10.9%, as compared to the three months endedApril 1, 2017. The increase in net sales was primarily due to a $45.9 million increase from the ramp of new products for existing customers and net increased customer end-market demand. Partially offsetting these increases were reductions in net sales of $13.0 million due to end-of-life products and $11.4 million due to customer disengagements.

During the six months endedMarch 31, 2018, net sales increased$14.1 million, or 2.4%, as compared to the six months endedApril 1, 2017. The increase in net sales was primarily due to a $104.0 million increase from the ramp of new products for existing customers and an $8.9 million increase from the ramp of production for new customers. Partially offsetting these increases were reductions in net sales of $63.4 million and $20.7 million due to end-of-life products and customer disengagements, respectively, and a net decrease in end-market demand.

APAC. Net sales for the three months endedMarch 31, 2018, in the APAC segment increased$40.6 million, or 13.1%, as compared to the three months endedApril 1, 2017. The increase in net sales was primarily due to a $55.7 million increase from the ramp of new products for existing customers and net increased customer end-market demand. These increases were partially offset by a decrease of $22.3 million that resulted from customer disengagements.

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During the six months endedMarch 31, 2018, net sales increased$76.8 million, or 12.4%, as compared to the six months endedApril 1, 2017. The increase in net sales was primarily due to a $96.0 million increase from the ramp of new products for existing customers and net increased customer end-market demand. These increases were partially offset by a decrease of $21.3 million that resulted from customer disengagements.

EMEA. Net sales for three months endedMarch 31, 2018, in the EMEA segment increased$29.0 million, or 64.4%, as compared to three months endedApril 1, 2017. The increase in net sales was primarily attributable to net increased customer end-market demand and an increase of $8.4 million due to the ramp of new products for existing customers.

During the six months endedMarch 31, 2018, net sales increased$53.4 million, or 63.3%, as compared to the six months endedApril 1, 2017. The increase was primarily attributable to net increased customer end-market demand and an increase of $17.9 million due to the ramp of new products for existing customers.

Our net sales by market sector for the indicated periods were as follows (in millions):

	Three Months Ended				Six Months Ended
Market Sector	March 31, 2018		April 1, 2017		March 31, 2018		April 1, 2017
Healthcare/Life Sciences	$	248.1	$	204.9	$	485.1	$	415.9
Industrial/Commercial	241.7		191.9		448.5		397.6
Communications	98.8		108.2		232.4		239.6
Aerospace/Defense	110.1		99.3		209.9		186.3
Total net sales	$	698.7	$	604.3	$	1,375.9	$	1,239.4

Healthcare/Life Sciences. Net sales for the three months endedMarch 31, 2018, in the Healthcare/Life Sciences sector increased$43.2 million, or 21.1%, as compared to the three months endedApril 1, 2017. The increase was primarily driven by increases in net sales of $31.7 million due to the ramp of new products for existing customers as well as overall net increased customer end-market demand.

During the six months endedMarch 31, 2018, net sales in the Healthcare/Life Sciences sector increased$69.2 million, or 16.6%, as compared to the six months endedApril 1, 2017. The increase was primarily driven by increases in net sales of $56.8 million due to the ramp of new products for existing customers and $7.1 million from the ramp of production for new customers, as well as net increased customer end-market demand. Partially offsetting these increases was a decrease in net sales of $3.5 million from end-of-life products.

Industrial/Commercial. Net sales for the three months endedMarch 31, 2018, in the Industrial/Commercial sector increased$49.8 million, or 26.0%, as compared to the three months endedApril 1, 2017. The increase was primarily driven by increases in net sales of $55.5 million due to the ramp of new products for existing customers as well as overall net increased customer end-market demand, especially in the semiconductor capital equipment market. Partially offsetting the increases were decreases in net sales of $16.2 million from end-of-life products and $12.0 million related to customer disengagements.

During the six months endedMarch 31, 2018, net sales in the Industrial/Commercial sector increased$50.9 million, or 12.8%, as compared to the six months endedApril 1, 2017. The increase was primarily driven by increases in net sales of $101.9 million due to the ramp of new products for existing customers as well as overall net increased customer end-market demand, especially in the semiconductor capital equipment market. Partially offsetting the increases were decreases in net sales of $54.6 million from end-of-life products and $22.3 million related to customer disengagements.

Communications. Net sales for the three months endedMarch 31, 2018, in the Communications sector decreased$9.4 million, or 8.7%, as compared to the three months endedApril 1, 2017. The decrease was primarily driven by $21.7 million from customer disengagements as well as overall net decreased end-market demand. The decreases were partially offset by an increase in net sales of $13.5 million due to the ramp of new products for existing customers.

During the six months endedMarch 31, 2018, net sales in the Communications sector decreased$7.2 million, or 3.0%, as compared to the six months endedApril 1, 2017. The decrease was primarily driven by decreases in net sales of $19.8 million from customer disengagements as well as overall net decreased end-market demand. The decreases were partially offset by an increase in net sales of $16.1 million due to the ramp of new products for existing customers.

Aerospace/Defense. Net sales for the three months endedMarch 31, 2018, in the Aerospace/Defense sector increased$10.8 million, or 10.9%, as compared to the three months endedApril 1, 2017. The increase was primarily driven by a $5.3 million

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increase due to the ramp of production of new products for existing customers as well as overall net increased customer end-market demand.

During the six months endedMarch 31, 2018, net sales in the Aerospace/Defense sector increased$23.6 million, or 12.7%, as compared to the six months endedApril 1, 2017. The increase was primarily driven by a $18.3 million increase due to the ramp of production of new products for existing customers as well as overall net increased customer end-market demand.

Cost of sales. Cost of sales for the three and six months ended March 31, 2018increased$105.2 million and $148.2 million, respectively, as compared to the three and six months ended April 1, 2017. Cost of sales is comprised primarily of material and component costs, labor costs and overhead. For both the three and six months ended March 31, 2018 and April 1, 2017, approximately 89.0% of the total cost of sales was variable in nature and fluctuated with sales volumes. Of this amount, approximately 91.0% of these costs in each period were related to material and component costs.

As compared to the prior year periods, the increase in cost of sales in both the three and six months ended March 31, 2018, was primarily due to the increase in net sales and a one-time bonus. During the three months ended March 31, 2018, due to our ability to access overseas cash as a result of U.S. Tax Reform, a $13.5 million one-time bonus was approved and paid to full-time, non-executive employees ("one-time employee bonus"), of which $12.6 million impacted cost of sales. Also contributing to the increase as compared to the prior year were increased fixed labor costs primarily to support program ramps and a negative shift in customer mix.

Gross profit. Gross profit for the three and six months ended March 31, 2018, decreased$10.8 million and $11.7 million, respectively, as compared to the three and six months ended April 1, 2017. Gross margin decreased 300 and 180 basis points, respectively, as compared to the three and six months ended April 1, 2017. The primary driver of the decreases in gross profit and gross margin as compared to the three and six months ended April 1, 2017, was the larger percentage increase in cost of sales as compared to the increase in net sales, driven by the factors previously discussed.

Operating income. Operating income for the three and six months ended March 31, 2018, decreased$15.3 million and $17.6 million as compared to the three and six months ended April 1, 2017, as a result of the decreases in gross profit and a $4.4 million and $5.9 million increase in selling and administrative expenses ("S&A"), respectively. The increases in S&A as compared to the prior year were driven by increases in variable compensation expense and a $0.9 million increase due to the one-time employee bonus.

A discussion of operating income (loss) by reportable segment is presented below (in millions):

	Three Months Ended						Six Months Ended
	March 31, 2018			April 1, 2017			March 31, 2018			April 1, 2017
Operating income (loss):
AMER	$	10.7		$	8.2		$	21.2		$	23.0
APAC	49.1			50.5			99.7			98.7
EMEA	0.4			(1.2		)	(0.7		)	(3.5		)
Corporate and other costs (1)	(42.9		)	(24.9		)	(71.3		)	(51.7		)
Total operating income	$	17.3		$	32.6		$	48.9		$	66.5
(1) The three and six months ended March 31, 2018, include the $13.5 million one-time employee bonus.

AMER. Operating income for the three months endedMarch 31, 2018, increased$2.5 million as compared to the three months endedApril 1, 2017, primarily as a result of an increase in net sales, which was partially offset by increases in fixed labor and overhead costs to support new program ramps.

Operating income for the six months endedMarch 31, 2018, decreased$1.8 million as compared to the six months endedApril 1, 2017, driven by an increase in fixed labor costs to support new program ramps, which was partially offset a positive shift in customer mix.

APAC. Operating income for the three months endedMarch 31, 2018, decreased$1.4 million as compared to the three months endedApril 1, 2017, primarily due to a negative shift in customer mix and an increase in fixed labor and S&A costs to support new program ramps, which was partially offset by an increase in net sales.

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Operating income for the six months endedMarch 31, 2018, increased $1.0 million as compared to the six months endedApril 1, 2017, primarily due to an increase in net sales, which was partially offset by a negative shift in customer mix and increases in fixed labor and S&A costs to support new program ramps.

EMEA. Operating income for the three months endedMarch 31, 2018, increased $1.6 million as compared to the three months endedApril 1, 2017, primarily due to an increase in net sales, which was partially offset by increases in fixed labor and S&A to support new program ramps.

Operating loss for the six months endedMarch 31, 2018, decreased $2.8 million as compared to the six months endedApril 1, 2017, primarily due to an increase in net sales, which was partially offset by increases in fixed labor and S&A to support new program ramps.

Other income (expense). Other expense for the three months endedMarch 31, 2018, increased$2.4 million as compared to the three months endedApril 1, 2017, primarily due to the impact of foreign exchange volatility, which resulted in a foreign exchange gain of $0.3 million during the three months endedMarch 31, 2018 as compared to a $1.7 million gain during the three months endedApril 1, 2017.

Other expense increased $2.1 million for the six months endedMarch 31, 2018 as compared to the six months endedApril 1, 2017, primarily due to a $0.8 million decrease in foreign exchange-related gains and a $0.9 million increase in factoring fees related to the Company's accounts receivable securitization facility. Refer to "Liquidity and Capital Resources - Financing Activities" for additional detail on the Company's accounts receivable securitization facility.

Income taxes. On December 22, 2017, the U.S. Tax Cuts & Jobs Act was enacted ("Tax Reform"). Tax Reform made significant changes to U.S. corporate income tax, including transitioning the U.S. to a dividend exemption system and requiring a deemed dividend on historical undistributed earnings of foreign subsidiaries at a reduced tax rate. Tax Reform also includes provisions that may impact us beginning in fiscal 2019, such as a U.S. tax on certain foreign low-taxed earnings and a limitation placed on the deductibility of domestic interest expense. U.S. GAAP required us to recognize the effects of Tax Reform in the period of enactment, which was the quarter ended December 30, 2017. The SEC issued guidance that allowed us to record a provisional tax expense when uncertainty or other factors may impact the final outcome.

We believe the provisional tax expense of $124.5 million recorded in the quarter ended December 30, 2017, continues to be a reasonable estimate of tax expense related to Tax Reform using all analyses, interpretations and guidance available at this time. We continue to assess the impact of Tax Reform on our business, and the final impact may differ from this estimate, perhaps materially, due to, among other things changes in interpretations, assumptions, and/or guidance that may be issued in the near future or actions we may take as a result. For the three months endedMarch 31, 2018, there have been no changes in interpretations, assumptions and/or guidance that require an adjustment to our provisional tax expense recorded in the three months ended December 30, 2017.

Effective income tax rates for the indicated periods were as follows:

	Three Months Ended				Six Months Ended
	March 31, 2018		April 1, 2017		March 31, 2018		April 1, 2017
Effective tax rate, as reported	16.5	%	9.6	%	297.0	%	9.4	%
Impact of Tax Reform	—	%	—	%	(284.6	)%	—	%
Impact of one-time employee bonus	(6.7	)%	—	%	(2.3	)%	—	%
Effective tax rate, as adjusted (1)	9.8	%	9.6	%	10.1	%	9.4	%
(1) We believe the non-GAAP presentation of the effective annual tax rate excluding the impact of Tax Reform and the one-time employee bonus provides additional insight over the change from the comparative reporting periods by excluding these non-recurring expenses. In addition, the Company believes that its effective tax rate, as adjusted, enhances the ability of investors to analyze the Company’s operating performance and supplements, but does not replace, its effective tax rate calculated in accordance with U.S. GAAP.

Income tax expense for the three months endedMarch 31, 2018 and April 1, 2017, was $2.4 million and $3.1 million, respectively. Income tax expense for the six months endedMarch 31, 2018 and April 1, 2017, was $130.0 million and $6.0 million, respectively.

The effective tax rates for the three and six months ended March 31, 2018, were 16.5% and 297.0%, respectively, compared to the effective tax rates of 9.6% and 9.4% for the three and six months ended April 1, 2017. The effective tax rate for the three months ended March 31, 2018, increased from the effective tax rate for the three months ended April 1, 2017, primarily due to the one-time employee bonus and a decrease in pre-tax earnings in jurisdictions where we maintain a valuation allowance. The

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effective tax rate for the six months ended March 31, 2018 increased from the effective tax rate for the six months ended April 1, 2017, primarily due to the impact of Tax Reform, the one-time employee bonus, and a decrease in pre-tax earnings in jurisdictions where we maintain a valuation allowance.

The impact of Tax Reform and the one-time employee bonus on our income tax expense is reflected in the following table (in millions):

	Three Months Ended				Six Months Ended
	March 31, 2018		April 1, 2017		March 31, 2018			April 1, 2017
Income tax expense, as reported	$	2.4	$	3.1	$	130.0		$	6.0
Impact of Tax Reform	—		—		(124.5		)	—
Impact of one-time employee bonus	$	0.4	$	—	0.3			—
Income tax expense, as adjusted (1)	$	2.8	$	3.1	$	5.8		$	6.0
(1) We believe the non-GAAP presentation of income tax expense excluding the impact of Tax Reform and the one-time employee bonus provides additional insight over the change from the comparative reporting periods by excluding these non-recurring expenses. In addition, the Company believes that its income tax expense, as adjusted, enhances the ability of investors to analyze the Company's operating performance and supplements, but does not replace, its income tax expense calculated in accordance with U.S. GAAP.

The income tax expense of $2.4 million recorded in the quarter ended March 31, 2018, included a reduction in tax expense from the one-time employee bonus of $0.4 million. The income tax expense of $124.5 million recorded in the quarter ended December 30, 2017, due to Tax Reform included $101.8 million for federal and state purposes on the deemed repatriation of our historical undistributed foreign earnings. This amount is payable over an eight year period beginning in fiscal 2019. An additional tax expense of $22.7 million was recorded in the quarter ended December 30, 2017, for foreign withholding taxes that are payable on certain dividends due to a change in our permanently reinvested assertion on foreign earnings.

Due to Tax Reform, our blended U.S. statutory rate for fiscal 2018 is 24.5%. This results from a statutory tax rate of 35% for the first three months of fiscal 2018, and a statutory tax rate of 21% for the remainder of fiscal 2018. Our effective tax rate varies from our blended U.S. statutory rate of 24.5% primarily due to the geographic distribution of worldwide earnings as well as a tax holiday granted to a subsidiary within our APAC segment, where we derive a significant portion of our earnings. In addition, our effective tax rate has been impacted by changes due to Tax Reform and the one-time employee bonus discussed above, and may be impacted by disputes with taxing authorities, tax planning activities, adjustments to uncertain tax positions and changes in valuation allowances.

The estimated effective income tax rate for fiscal 2018 is expected to be between 122% and 130%. Excluding the impact of Tax Reform and one-time employee bonus discussed above, the estimated effective income tax rate, as adjusted, for fiscal 2018 is expected to be between 10.0% and 12.0%.

Net (loss) income. Net income for the three months endedMarch 31, 2018 decreased $17.0 million as compared to the three months endedApril 1, 2017, primarily due to the $13.2 million after-tax one-time employee bonus and a net $3.5 million increase in S&A, as previously discussed.

Net loss of $86.2 million for the six months endedMarch 31, 2018 reflected a decrease of $143.7 million as compared to the net income of $57.5 million for the six months endedApril 1, 2017. The decrease was primarily a result of the $124.5 million of tax expense that was recorded during the three months ended December 30, 2017 in connection with Tax Reform, the $13.2 million after-tax one-time employee bonus and a net $5.0 million increase in S&A, as previously discussed.

Diluted earnings (loss) per share. Diluted earnings per share for the three months endedMarch 31, 2018 was $0.36, a $0.48 decrease from diluted earnings per share of $0.84 for the three months endedApril 1, 2017, primarily as a result of decreased net income.

Diluted loss per share for the six months endedMarch 31, 2018 was $2.57, a $4.23 decrease from the diluted earnings per share of $1.66 for the six months endedApril 1, 2017, primarily as a result of decreased net income, including due to the impact of Tax Reform. This was partially offset by the positive impact of fewer weighted average outstanding shares as compared to the prior year due to our common stock repurchase program. See also Note 11, "Shareholders' Equity," for information regarding the Company's share repurchase plans.

Return on Invested Capital ("ROIC") and Economic Return. We use a financial model that is aligned with our business strategy and includes a ROIC goal of 500 basis points over our weighted average cost of capital ("WACC"), which we refer to as "Economic Return," and a 4.7% to 5.0% operating margin target. Our primary focus is on our Economic Return goal of

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5.0%, which is designed to create shareholder value and generate sufficient cash to self-fund our targeted organic revenue growth rate of 12.0%. ROIC and Economic Return are non-GAAP financial measures.

Non-GAAP financial measures, including ROIC and Economic Return, are used for internal management goals and decision making because such measures provide management and investors additional insight into financial performance. In particular, we provide ROIC and Economic Return because we believe they offer insight into the metrics that are driving management decisions because we view ROIC and Economic Return as important measures in evaluating the efficiency and effectiveness of our long-term capital requirements. We also use a derivative measure of ROIC as a performance criteria in determining certain elements of compensation, and certain compensation incentives are based on Economic Return performance.

We define ROIC as tax-effected operating income before restructuring and other special items divided by average invested capital over a rolling three-quarter period for the second quarter. Invested capital is defined as equity plus debt, less cash and cash equivalents. Other companies may not define or calculate ROIC in the same way. ROIC and other non-GAAP financial measures should be considered in addition to, not as a substitute for, measures of our financial performance prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP").

We review our internal calculation of WACC annually, and our estimated WACC is 9.5% for fiscal 2018. By exercising discipline to generate ROIC in excess of our WACC, our goal is to create value for our shareholders. ROIC was 15.6% and 16.8% for the six months endedMarch 31, 2018 and April 1, 2017, respectively.

For a reconciliation of ROIC and Economic Return to our financial statements that were prepared using U.S. GAAP, see Exhibit 99.1 to this quarterly report on Form 10-Q, which is incorporated herein by reference.

Refer to the table below, which includes the calculation of ROIC and Economic Return (dollars in millions) for the indicated periods:

	Six Months Ended
	March 31, 2018			April 1, 2017
Annualized operating income (tax effected)	$	111.0		$	121.0
Average invested capital	709.8			718.5
After-tax ROIC	15.6		%	16.8		%
WACC	9.5		%	10.5		%
Economic Return	6.1		%	6.3		%

LIQUIDITY AND CAPITAL RESOURCES

Cash and cash equivalents and restricted cash were $403.3 million as of March 31, 2018, as compared to $569.3 million as of September 30, 2017.

As of March 31, 2018, approximately 80% of our cash balance was held outside of the U.S. by our foreign subsidiaries. With the enactment of Tax Reform, we believe that our offshore cash can be accessed in a more tax efficient manner. As previously discussed, we recorded $124.5 million of tax expense during the three months ended December 30, 2017, associated with the repatriation of undistributed foreign earnings and the reversal of our permanently reinvested assertion on certain foreign earnings in connection with Tax Reform. During the three months ended March 31, 2018, we repatriated approximately $280.0 million from our APAC region and we anticipate repatriating additional funds during the fiscal third quarter while continuing to execute our revised capital allocation strategy; however, that additional repatriation is subject to future events and conditions that may be beyond our control. In addition to the $13.5 million one-time employee bonus paid in the quarter ended March 31, 2018, and apart from funding the remaining $121.8 million in taxes payable related to Tax Reform, other uses of such capital are expected to include the following:

• Returning cash to shareholders by accelerating repurchase activity. Our intent is to use the remaining $74.7 million under the 2016 Share Repurchase Plan during fiscal 2018;

• Repurchasing an additional $200.0 million of shares under the 2018 Share Repurchase Plan through fiscal 2019;

• Paying down $25.0 million of the $175.0 million in principal amount of our Senior Notes due on June 15, 2018 (the "Notes"), and refinancing the balance; and

• Reinvestment in the business to support growth and productivity improvements

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Our future cash flows from operating activities will be reduced by $121.8 million due to the cash payments of accrued income taxes related to Tax Reform. The table below provides our best estimate of the timing and amount of these future cash flows; however, these amounts may change, perhaps materially, as noted within "Results of Operations - Income Taxes" above. The $121.8 million includes $100.0 million of U.S. federal taxes on the deemed repatriation of undistributed foreign earnings, which are payable over an eight year period in accordance with the following installment schedule beginning in fiscal 2019 (in millions):

2019	$	8.0
2020	8.0
2021	8.0
2022	8.0
2023	8.0
2024	15.0
2025	20.0
2026	25.0
Total	$	100.0

The schedule above excludes an additional $20.0 million of foreign withholding taxes and $1.8 million of state taxes on the deemed repatriation of undistributed foreign earnings since the exact timing of the payments is unknown as of March 31, 2018.

Cash Flows. The following table provides a summary of cash flows for the periods presented, excluding the effect of exchange rates on cash and cash equivalents and restricted cash (in millions):

	Six Months Ended
	March 31, 2018			April 1, 2017
Cash provided by operating activities	$	2.8		$	105.6
Cash used in investing activities	$	(28.8	)	$	(14.2	)
Cash (used in) provided by financing activities	$	(145.7	)	$	3.3

Operating Activities. Cash flows provided by operating activities during the six months endedMarch 31, 2018, was $2.8 million, as compared to $105.6 million for the six months endedApril 1, 2017. The decrease was primarily due to a $125.1 million decrease in accounts receivable cash flows, which resulted from the increase in net sales and the initial implementation of a new factoring program during fiscal 2017. The decrease was partially offset by improvements of $27.3 million in accounts payable cash flows driven by increased purchasing activity in support of the increased net sales.

The following table provides a summary of cash cycle days for the periods indicated (in days):

	Three Months Ended
	March 31, 2018	April 1, 2017
Days in accounts receivable	52	48
Days in inventory	100	103
Days in accounts payable	(61)	(64)
Days in cash deposits	(15)	(14)
Annualized cash cycle	76	73

We calculate days in accounts receivable as accounts receivable for the respective quarter divided by annualized sales for the respective quarter by day. We calculate days in inventory, accounts payable, and cash deposits as each balance sheet line item for the respective quarter divided by annualized cost of sales for the respective quarter by day. We calculate annualized cash cycle as the sum of days in accounts receivable and days in inventory, less days in accounts payable and days in cash deposits.

As of March 31, 2018, annualized cash cycle days increasedthree days compared to April 1, 2017 due to the following factors:

Days in accounts receivable for the three months endedMarch 31, 2018, increasedfour days compared to the three months ended April 1, 2017. The increase is primarily attributable to the timing of customer shipments and payments and a $94.3

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million increase in net sales as compared to the three months ended April 1, 2017, due to the factors noted within "Results of Operations - Net sales" above, which was partially offset by a $44.4 million increase in accounts receivable sold under factoring programs.

Days in inventory for the three months endedMarch 31, 2018, decreasedthree days compared to the three months ended April 1, 2017. The decrease is primarily due to the increase in annualized cost of sales due to the factors noted within "Results of Operations - Cost of sales" above, which was partially offset by a $92.0 million increase in inventory to support new program ramps and as a result of experiencing longer lead times for certain components, mainly capacitors, resistors and memory. In order to maintain a high level of customer service, we are procuring components earlier, which has led to the increase in inventory.

Days in accounts payable for the three months endedMarch 31, 2018, decreasedthree days compared to the three months ended April 1, 2017. The decrease is primarily due to the increase in annualized cost of sales due to the factors noted within "Results of Operations - Cost of sales" above, which was partially offset by increased purchasing activity to support higher revenue levels.

Days in cash deposits for the three months endedMarch 31, 2018, increasedone day compared to the three months ended April 1, 2017. The increase was primarily driven by an increase in customer deposits primarily due to deposits received from two customers to cover higher inventory balances, which was substantially offset by the increase in annualized cost of sales.

Free Cash Flow. We define free cash flow ("FCF"), a non-GAAP financial measure, as cash flow provided by operations less capital expenditures. FCF for the six months endedMarch 31, 2018 was $(26.3) million, a decrease of $117.3 million from $91.0 million for the six months endedApril 1, 2017, primarily due to a $102.8 million decrease in cash flows provided by operations, due to the factors discussed above, and a $14.5 million increase in capital expenditures, discussed below.

Non-GAAP financial measures, including FCF, are used for internal management assessments because such measures provide additional insight to investors into ongoing financial performance. In particular, we provide FCF because we believe it offers insight into the metrics that are driving management decisions. We view FCF as an important financial metric as it demonstrates our ability to generate cash and can allow us to pursue opportunities that enhance shareholder value. FCF is a non-GAAP financial measure that should be considered in addition to, not as a substitute for, measures of our financial performance prepared in accordance with U.S. GAAP.

A reconciliation of FCF to our financial statements that were prepared using U.S. GAAP follows (in millions):

	Six Months Ended
	March 31, 2018			April 1, 2017
Cash flows provided by operating activities	$	2.8		$	105.6
Payments for property, plant and equipment	(29.1		)	(14.6		)
Free cash flow	$	(26.3	)	$	91.0

Investing Activities. Cash flows used in investing activities totaled $28.8 million for the six months endedMarch 31, 2018, an increase of $14.6 million as compared to $14.2 million for the three months endedApril 1, 2017. The increase in cash used in investing activities was due to a $14.5 million increase in capital expenditures primarily to support new capabilities, new program ramps, and to replace or refresh manufacturing equipment.

We estimate funded capital expenditures for fiscal 2018 to be approximately $80.0 to $90.0 million, of which $29.1 million was utilized through the first six months of fiscal 2018. The remaining fiscal 2018 capital expenditures are anticipated to be used primarily to fund a building purchase in Penang, Malaysia, and to support new program ramps and replace or refresh older equipment. We believe our estimated capital expenditures will continue to be funded from cash flows provided by operations, and may be supplemented by available cash and borrowings under our credit facility, if required.

Financing Activities.Cash flows used in financing activities totaled $145.7 million for the six months endedMarch 31, 2018, an increase of $149.0 million as compared to cash flows provided by financing activities of $3.3 million for six months endedApril 1, 2017. The increase was primarily attributable to an increase in pay-downs of our revolving credit facility, under which there were no outstanding borrowings as of March 31, 2018, as compared to $90.0 million of outstanding borrowings as of April 1, 2017, as well as a $27.3 million increase in cash used to repurchase our common stock.

On June 6, 2016, the Board of Directors approved a multi-year stock repurchase program under which the Company is authorized to repurchase up to $150.0 million of its common stock beginning in fiscal 2017, subject to market conditions and

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other considerations (the "2016 Share Repurchase Plan"). During the six months endedMarch 31, 2018, the Company repurchased 671,409 shares for approximately $41.2 million, at an average price of $61.30 per share. During the six months endedApril 1, 2017, the Company repurchased 267,811 shares for approximately $13.9 million, at an average price of $51.93 per share. All shares repurchased under the 2016 Share Repurchase Plan were recorded as treasury stock. As noted above, the Company expects to complete the 2016 Share Repurchase Plan during the remainder of fiscal 2018. On February 14, 2018, the Board of Directors approved an additional stock repurchase plan under which the Company is authorized to repurchase $200.0 million of its common stock commencing upon completion of the 2016 Share Repurchase Plan (the “2018 Share Repurchase Plan”).

In fiscal 2011, Plexus issued $175.0 million in principal amount of the Notes. The related Note Purchase Agreement contains certain financial covenants, which include a maximum total leverage ratio, a minimum interest coverage ratio and a minimum net worth test, all as defined in the agreement. As of March 31, 2018, the Company was in compliance with all such covenants relating to the Notes and the Note Purchase Agreement. We plan to refinance $150.0 million of the existing $175.0 million of the Notes, which mature in June 2018, under terms similar to the existing Note Purchase Agreement. The Company has been negotiating with potential purchasers related to the refinancing of the Notes and believes that it has reached an agreement in principle on pricing and maturities that would reduce interest rates and extend the term for a portion of such borrowing as compared to the Notes. We expect to close the refinancing later in the third quarter of fiscal 2018. However, definitive agreements are not yet executed; therefore, we cannot provide assurances that such refinancing will occur on these, or any other, terms.

The Company's Credit Facility has a $300.0 million maximum commitment that expires on July 5, 2021. The Credit Facility may be further increased to $500.0 million, generally by mutual agreement of the Company and the lenders, subject to certain customary conditions. For further information regarding the Credit Facility, see Note 3, "Debt, Capital Lease Obligations and Other Financing," in Notes to Condensed Consolidated Financial Statements.

The financial covenants (as defined under the Credit Agreement) require, among other covenants, that the Company maintain, as of each fiscal quarter end, a maximum total leverage ratio and a minimum interest coverage ratio. As of March 31, 2018, the Company was in compliance with all financial covenants of the Credit Agreement.

The Credit Agreement and the Note Purchase Agreement allow for the future payment of cash dividends or the repurchase of shares provided that no event of default (including any failure to comply with a financial covenant) exists at the time of, or would be caused by, the dividend payment or the share repurchases. We have not paid cash dividends in the past and do not currently anticipate paying them in the future. However, we evaluate from time to time potential uses of excess cash, which in the future may include share repurchases above those already authorized, a special dividend or recurring dividends.

The Company has Master Accounts Receivable Purchase Agreements with The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch (the "BTMU RPA") and HSBC Bank (China) Company Limited, Xiamen branch (the "HSBC RPA") under which the Company may elect to sell receivables, at a discount, on an ongoing basis. As of March 31, 2018, the maximum facility amounts of these uncommitted facilities were $160.0 million and $60.0 million, respectively. The BTMU RPA is subject to expiration on October 3, 2018, but will be automatically extended each year unless any party gives no less than 10 days prior notice that the agreement should not be extended. The terms of the HSBC RPA are generally consistent with the terms of the BTMU RPA discussed above.

The Company previously sold receivables under a former trade accounts receivable sale program that expired during the first fiscal quarter of 2017.

The Company sold $135.9 million and $91.5 million of trade accounts receivable under these programs during the three months endedMarch 31, 2018 and April 1, 2017, respectively, in exchange for cash proceeds of $135.2 million and $91.1 million, respectively.

The Company sold $298.3 million and $169.3 million of trade accounts receivable during the six months endedMarch 31, 2018 and April 1, 2017, respectively, in exchange for cash proceeds of $296.7 million and $168.5 million, respectively.

In all cases, the sale discount was recorded within "Miscellaneous other income (expense)" in the Condensed Consolidated Statements of Comprehensive Income (Loss) in the period of the sale. For further information regarding the receivable sale programs, see Note 12, "Trade Accounts Receivable Sale Programs," in Notes to Condensed Consolidated Financial Statements.

Based on current expectations, we believe that our projected cash flows provided by operations, available cash and cash equivalents, potential borrowings under the Credit Facility, partial pay-down and refinancing of the Notes and our leasing capabilities should be sufficient to meet our working capital and fixed capital requirements for the next twelve months,

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including the partial repayment of the Notes. If our future financing needs increase, we may need to arrange additional debt or equity financing. Accordingly, we evaluate and consider from time to time various financing alternatives to supplement our financial resources. However, we cannot be assured that we will be able to make any such arrangements on acceptable terms.

CONTRACTUAL OBLIGATIONS, COMMITMENTS AND OFF-BALANCE SHEET OBLIGATIONS

Our disclosures regarding contractual obligations and commercial commitments are located in various parts of our regulatory filings. Information in the following table provides a summary of our contractual obligations and commercial commitments as of March 31, 2018 (dollars in millions):

	Payments Due by Fiscal Year
Contractual Obligations	Total		Remaining 2018		2019-2020		2021-2022		2023 and thereafter
Short-Term Debt Obligations (1)	$	176.8	$	176.8	$	—	$	—	$	—
Capital Lease and Other Financing Obligations (2)	40.2		4.8		7.5		3.7		24.2
Operating Lease Obligations	38.7		4.8		17.6		7.0		9.3
Purchase Obligations (3)	659.7		559.6		99.7		0.2		0.2
Repatriation Tax on Undistributed Foreign Earnings (4)	100.0		—		16.0		16.0		68.0
Other Long-Term Liabilities on the Balance Sheet (5)	14.4		0.1		0.1		0.3		13.9
Other Long-Term Liabilities not on the Balance Sheet (6)	6.4		0.7		2.8		—		2.9
Other Financing Obligations (7)	31.0		0.8		3.2		3.3		23.7
Total Contractual Cash Obligations	$	1,067.2	$	747.6	$	146.9	$	30.5	$	142.2

1) Includes $175.0 million in principal amount of Notes as well as interest; see Note 3, "Debt, Capital Lease Obligations and Other Financing," in Notes to Condensed Consolidated Financial Statements for further information.

2) As of March 31, 2018, capital lease and other financing obligations consists of capital lease payments and interest as well as a non-cash financing obligation related to the failed sale-leaseback of a building in Guadalajara, Mexico.

3) As of March 31, 2018, purchase obligations consist primarily of purchases of inventory and equipment in the ordinary course of business.

4) U.S. federal taxes on the deemed repatriation of undistributed foreign earnings due to Tax Reform, which is our best estimate and may change, perhaps materially. Refer to "Liquidity and Capital Resources" above for further detail.

5) As of March 31, 2018, other long-term obligations on the balance sheet included deferred compensation obligations to certain of our former and current executive officers, as well as other key employees, and asset retirement obligations. We have excluded from the above table the impact of approximately $3.1 million, as of March 31, 2018, related to unrecognized income tax benefits. The Company cannot make reliable estimates of the future cash flows by period related to these obligations.

6) As of March 31, 2018, other long-term obligations not on the balance sheet consisted of guarantees and a commitment for salary continuation and certain benefits in the event employment of one executive officer of the Company is terminated without cause. Excluded from the amounts disclosed are certain bonus and incentive compensation amounts, which would be paid on a prorated basis in the year of termination.

7) Includes future minimum lease payments under the 10-year base lease agreement in Guadalajara as well as two 5-year renewal options.

26

DISCLOSURE ABOUT CRITICAL ACCOUNTING POLICIES

Our critical accounting policies are disclosed in our 2017 annual report on Form 10-K. Other than the item noted below, there were no material changes to these policies.

Income Taxes:  Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. With the enactment of Tax Reform, the Company now provides for additional U.S. and foreign income taxes that would become payable upon the repatriation of undistributed earnings of foreign subsidiaries. The Company maintains valuation allowances when it is more likely than not that all or a portion of a deferred tax asset will not be realized. In determining whether a valuation allowance is required, the Company takes into account such factors as prior earnings history, expected future earnings, carryback and carryforward periods, and tax strategies that could potentially enhance the likelihood of the realization of a deferred tax asset.

NEW ACCOUNTING PRONOUNCEMENTS

See Note 1, "Basis of Presentation," in Notes to Condensed Consolidated Financial Statements for further information regarding new accounting pronouncements.

27

ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to market risk from changes in foreign exchange and interest rates. We selectively use financial instruments to reduce such risks. We do not use derivative financial instruments for speculative purposes.

Foreign Currency Risk

Our international operations create potential foreign exchange risk. Our policy is to selectively hedge our foreign currency denominated transactions in a manner that partially offsets the effects of changes in foreign currency exchange rates. We typically use foreign currency contracts to hedge only those currency exposures associated with certain assets and liabilities denominated in non-functional currencies. Corresponding gains and losses on the underlying transaction generally offset the gains and losses on these foreign currency hedges.

Our percentages of transactions denominated in currencies other than the U.S. dollar for the indicated periods were as follows:

	Three Months Ended
	March 31, 2018	April 1, 2017
Net Sales	10.3%	8.3%
Total Costs	15.0%	13.9%

The Company has evaluated the potential foreign currency exchange rate risk on transactions denominated in currencies other than the U.S. dollar for the periods presented above. Based on the Company’s overall currency exposure, as of March 31, 2018, a 10.0% change in the value of the U.S. dollar relative to our other transactional currencies would not have a material effect on the Company’s financial position, results of operations, or cash flows.

Interest Rate Risk

We have financial instruments, including cash equivalents and debt, which are sensitive to changes in interest rates. The primary objective of our investment activities is to preserve principal, while maximizing yields without significantly increasing market risk. To achieve this, we maintain our portfolio of cash equivalents in a variety of highly rated securities, money market funds and certificates of deposit, and limit the amount of principal exposure to any one issuer.

ITEM 4.    CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

The Company maintains disclosure controls and procedures designed to ensure that the information the Company must disclose in its filings with the Securities and Exchange Commission ("SEC") is recorded, processed, summarized and reported on a timely basis. The Company’s Chief Executive Officer ("CEO") and Chief Financial Officer ("CFO") have reviewed and evaluated, with the participation of the Company’s management, the Company’s disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act") as of the end of the period covered by this report (the "Evaluation Date"). Based on such evaluation, the CEO and CFO have concluded that, as of the Evaluation Date, the Company’s disclosure controls and procedures are effective (a) in recording, processing, summarizing and reporting, on a timely basis, information required to be disclosed by the Company in the reports the Company files or submits under the Exchange Act, and (b) in assuring that information is accumulated and communicated to the Company’s management, including the CEO and CFO, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

During the second quarter of fiscal 2018, there have been no changes in the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

28

PART II. OTHER INFORMATION

ITEM 1A.    Risk Factors

In addition to the risks and uncertainties discussed herein, particularly those discussed in the “Safe Harbor” Cautionary Statement and "Management’s Discussion and Analysis of Financial Condition and Results of Operations" in Part I, Item 2, see the risk factors set forth in Part I, Item 1A of our annual report on Form 10-K for the fiscal year ended September 30, 2017.

ITEM 2.    Unregistered Sales of Equity Securities and Use of Proceeds

The following table provides the specified information about the repurchases of shares by the Company during the three months endedMarch 31, 2018.

Period	Total number of shares purchased	Average price paid per share		Total number of shares purchased as part of publicly announced plans or programs	Maximum approximate dollar value of shares that may yet be purchased under the plans or programs*
December 31, 2017 to January 27, 2018	45,668	$	60.94	45,668	$	103,533,921
January 28, 2018 to February 24, 2018	187,545	$	59.33	187,545	$	292,406,289
February 25, 2018 to March 31, 2018	279,730	$	63.28	279,730	$	274,704,865
Total	512,943	$	61.63	512,943

* On June 6, 2016, the Board of Directors approved a multi-year stock repurchase program under which the Company is authorized to repurchase up to $150.0 million of its common stock. On February 14, 2018, the Board of Directors approved an additional stock repurchase program under which the Company is authorized to repurchase up to $200.0 million of its common stock commencing upon completion of the stock repurchase program approved in 2016.

ITEM 6. Exhibits

The list of exhibits is included below:

Exhibit No.	Exhibit
31.1	Certification of Chief Executive Officer pursuant to Section 302(a) of the Sarbanes Oxley Act of 2002.
31.2	Certification of Chief Financial Officer pursuant to Section 302(a) of the Sarbanes Oxley Act of 2002.
32.1	Certification of the CEO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of the CFO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
99.1	Reconciliation of ROIC and Economic Return to GAAP Financial Statements
101	The following materials from Plexus Corp.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2018, formatted in XBRL (Extensible Business Reporting Language): (i) the Condensed Consolidated Statements of Comprehensive Income (Loss), (ii) the Condensed Consolidated Balance Sheets, (iii) the Condensed Consolidated Statements of Cash Flows, and (iv) Notes to Condensed Consolidated Financial Statements.
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

29

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	Plexus Corp.
	Registrant
Date: 5/4/18	/s/ Todd P. Kelsey
	Todd P. Kelsey
	President and Chief Executive Officer
Date: 5/4/18	/s/ Patrick J. Jermain
	Patrick J. Jermain
	Senior Vice President and Chief Financial Officer

30

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Todd P. Kelsey, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Plexus Corp.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 4, 2018

/s/ Todd P. Kelsey

Todd P. Kelsey

President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Patrick J. Jermain, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Plexus Corp.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 4, 2018

/s/ Patrick J. Jermain

Patrick J. Jermain

Senior Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Plexus Corp. (the “Company”) on Form 10-Q for the quarterly period ended March 31, 2018, as filed with the Securities and Exchange Commission on or about the date hereof (the “Report”), I, Todd P. Kelsey, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Todd P. Kelsey

Todd P. Kelsey

President and Chief Executive Officer

May 4, 2018

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to Plexus Corp. and will be retained by Plexus Corp. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Plexus Corp. (the “Company”) on Form 10-Q for the quarterly period ended March 31, 2018, as filed with the Securities and Exchange Commission on or about the date hereof (the “Report”), I, Patrick J. Jermain, Senior Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Patrick J. Jermain

Patrick J. Jermain

Senior Vice President and Chief Financial Officer

May 4, 2018

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to Plexus Corp. and will be retained by Plexus Corp. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-99.1

					Exhibit 99.1
Return on Invested Capital ("ROIC") and Economic Return Calculations (dollars in thousands):
	Six Months Ended
	Mar 31, 2018				Apr 1, 2017
Operating income, as reported		$	48,872			$	66,474
One-time employee bonus	+	13,512			+	—
Adjusted operating income		62,384				66,474
	x	2			x	2
Adjusted annualized operating income		$	124,768			$	132,948
Adjusted effective tax rate	x	11		%	x	9		%
Tax impact		13,724				11,965
Adjusted operating income (tax effected)		$	111,044			$	120,983
Average invested capital		$	709,764			$	718,524
ROIC		15.6		%		16.8		%
WACC		(9.5		)%		(10.5		)%
Economic Return		6.1		%		6.3		%

Average Invested Capital	Three Months Ended
	Mar 31, 2018			Dec 30, 2017			Sept 30, 2017			Jul 1, 2017			Apr 1, 2017			Dec 31, 2016			Oct 1, 2016
Equity	$	920,503		$	933,849		$	1,025,939		$	991,306		$	961,438		$	927,542		$	916,797
Plus:
Debt - current	180,772			179,881			286,934			267,297			92,623			78,879			78,507
Debt - non-current	27,217			26,047			26,173			26,138			185,638			184,136			184,002
Less:
Cash and cash equivalents	(402,470		)	(506,694		)	(568,860		)	(519,172		)	(524,520		)	(496,505		)	(432,964		)
	$	726,022		$	633,083		$	770,186		$	765,569		$	715,179		$	694,052		$	746,342

XML

Document And Entity Information - shares	6 Months Ended
	Mar. 31, 2018	May 01, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Entity Registrant Name	PLEXUS CORP
Entity Central Index Key	0000785786
Current Fiscal Year End Date	--09-29
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		32,977,703

XML

Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Weighted average shares outstanding:
Net sales	$ 698,651	$ 604,349	$ 1,375,945	$ 1,239,368
Cost of sales	645,699	540,549	1,259,470	1,111,212
Gross profit	52,952	63,800	116,475	128,156
Selling and administrative expenses	35,637	31,229	67,603	61,682
Operating income	17,315	32,571	48,872	66,474
Other income (expense):
Interest expense	(3,547)	(3,262)	(7,272)	(6,536)
Interest income	1,426	1,185	2,981	2,256
Miscellaneous	(477)	1,925	(823)	1,251
Income before income taxes	14,717	32,419	43,758	63,445
Income tax expense	2,427	3,124	129,961	5,971
Net income (loss)	$ 12,290	$ 29,295	$ (86,203)	$ 57,474
Earnings (loss) per share:
Basic (in dollars per share)	$ 0.37	$ 0.87	$ (2.57)	$ 1.71
Diluted (in dollars per share)	$ 0.36	$ 0.84	$ (2.57)	$ 1.66
Weighted average shares outstanding:
Basic (in shares)	33,538	33,703	33,552	33,619
Diluted (in shares)	34,387	34,702	33,552	34,631
Other comprehensive income (loss):
Derivative instrument fair value adjustment	$ 1,229	$ 3,159	$ 2,768	$ (2,244)
Foreign currency translation adjustments	4,773	2,613	6,915	(8,746)
Other comprehensive income (loss)	6,002	5,772	9,683	(10,990)
Total comprehensive income (loss)	$ 18,292	$ 35,067	$ (76,520)	$ 46,484

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Current assets:
Cash and cash equivalents	$ 402,470	$ 568,860
Restricted cash	845	394
Accounts receivable, net of allowances of $1,029 and $980, respectively	400,262	365,513
Inventories	701,666	654,642
Prepaid expenses and other	32,313	28,046
Total current assets	1,537,556	1,617,455
Property, plant and equipment, net	324,484	314,665
Deferred income tax assets	5,464	5,292
Other	42,470	38,770
Total non-current assets	372,418	358,727
Total assets	1,909,974	1,976,182
Current liabilities:
Current portion of long-term debt and capital lease obligations	180,772	286,934
Accounts payable	431,659	413,999
Customer deposits	104,914	107,837
Accrued salaries and wages	48,973	49,376
Other accrued liabilities	66,844	49,445
Total current liabilities	833,162	907,591
Long-term debt and capital lease obligations, net of current portion	27,217	26,173
Long-term accrued income taxes payable	91,905	0
Deferred income tax liabilities	19,738	0
Other liabilities	17,449	16,479
Total non-current liabilities	156,309	42,652
Total liabilities	989,471	950,243
Commitments and contingencies
Shareholders’ equity:
Preferred stock, $.01 par value, 5,000 shares authorized, none issued or outstanding	0	0
Common stock, $.01 par value, 200,000 shares authorized, 52,435 and 51,934 shares issued, respectively, and 33,293 and 33,464 shares outstanding, respectively	524	519
Additional paid-in capital	567,535	555,297
Common stock held in treasury, at cost, 19,142 and 18,470 shares, respectively	(615,263)	(574,104)
Retained earnings	963,003	1,049,206
Accumulated other comprehensive income (loss)	4,704	(4,979)
Total shareholders’ equity	920,503	1,025,939
Total liabilities and shareholders’ equity	$ 1,909,974	$ 1,976,182

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 1,029	$ 980
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	52,435,000	51,934,000
Common stock, shares outstanding (in shares)	33,293,000	33,464,000
Treasury stock, shares (in shares)	19,142,000	18,470,000

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Cash flows from operating activities
Net (loss) income	$ (86,203)	$ 57,474
Adjustments to reconcile net (loss) income to net cash flows from operating activities:
Depreciation	23,602	22,489
Amortization of deferred financing fees	156	155
Gain on sale of property, plant and equipment, net	(201)	(329)
Deferred income taxes	22,326	1
Share-based compensation expense	8,420	8,013
Changes in operating assets and liabilities:
Accounts receivable	(32,326)	92,751
Inventories	(42,781)	(49,325)
Other current and noncurrent assets	(4,766)	(5,711)
Accrued income taxes payable	102,220	171
Accounts payable	15,611	(11,719)
Customer deposits	(3,680)	(594)
Other current and noncurrent liabilities	463	(7,769)
Cash flows provided by operating activities	2,841	105,607
Cash flows from investing activities
Payments for property, plant and equipment	(29,115)	(14,621)
Proceeds from sales of property, plant and equipment	273	427
Cash flows used in investing activities	(28,842)	(14,194)
Cash flows from financing activities
Borrowings under credit facility and other short-term borrowings	504,616	97,926
Payments on debt and capital lease obligations	(612,961)	(84,745)
Repurchases of common stock	(41,159)	(13,906)
Proceeds from exercise of stock options	9,194	9,883
Payments related to tax withholding for share-based compensation	(5,371)	(5,833)
Cash flows (used in) provided by financing activities	(145,681)	3,325
Effect of exchange rate changes on cash and cash equivalents	5,743	(2,724)
Net (decrease) increase in cash and cash equivalents and restricted cash	(165,939)	92,014
Cash and cash equivalents and restricted cash:
Beginning of period	569,254	432,964
End of period	$ 403,315	$ 524,978

XML

Basis of Presentation

6 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

Basis of Presentation:

The accompanying Condensed Consolidated Financial Statements included herein have been prepared by Plexus Corp. and its subsidiaries (together “Plexus” or the “Company”) without audit and pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (“SEC”). The accompanying Condensed Consolidated Financial Statements reflect all adjustments, which include normal recurring adjustments necessary for the fair statement of the consolidated financial position of the Company as of March 31, 2018 and September 30, 2017, and the results of operations for the three and six months ended March 31, 2018 and April 1, 2017, and the cash flows for the same six month periods.

The Company’s fiscal year ends on the Saturday closest to September 30. The Company uses a “4-4-5” weekly accounting system for the interim periods in each quarter. Each quarter, therefore, ends on a Saturday at the end of the 4-4-5 period. Periodically, an additional week must be added to the fiscal year to re-align with the Saturday closest to September 30. All fiscal quarters presented herein included 13 weeks.

Certain information and footnote disclosures, normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"), have been condensed or omitted pursuant to the SEC’s rules and regulations dealing with interim financial statements. However, the Company believes that the disclosures made in the Condensed Consolidated Financial Statements included herein are adequate to make the information presented not misleading. It is suggested that these Condensed Consolidated Financial Statements be read in conjunction with the Consolidated Financial Statements and notes thereto included in the Company’s 2017 Annual Report on Form 10-K.

Certain prior period amounts have been reclassified to conform to the current period presentation.

Recently Issued Accounting Pronouncements Not Yet Adopted:

In August 2017, the Financial Accounting Standards Board (the "FASB") issued ASU 2017-12 related to the accounting for hedging activities. The pronouncement expands and refines hedge accounting, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. This guidance is effective for the Company beginning in the first quarter of fiscal year 2020 and early adoption is permitted. The Company is finalizing its assessment of the impact of the guidance, but does not believe it will have a material impact on the Company's Condensed Consolidated Financial Statements.

In October 2016, the FASB issued ASU 2016-16 related to the income tax consequences of intra-entity transfers of assets other than inventory. The new standard eliminates the exception for an intra-entity transfer of an asset other than inventory and requires an entity to recognize the income tax consequences when the transfer occurs. This guidance is effective for the Company beginning in the first quarter of fiscal year 2019 and early adoption is permitted. This guidance should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company is currently assessing the impact this new standard may have on its Condensed Consolidated Financial Statements.

In August 2016, the FASB issued ASU 2016-15 related to the classification of certain cash receipts and cash payments, which clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows. The new standard addresses certain issues where diversity in practice was identified. It also amends existing guidance, which is principles based and often requires judgment to determine the appropriate classification of cash flows as operating, investing or financing activities and clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. This guidance is effective for the Company beginning in the first quarter of fiscal year 2019. Early adoption is permitted. The Company is currently assessing the impact this new standard may have on its Condensed Consolidated Statements of Cash Flows.

In February 2016, the FASB issued ASU 2016-02, which requires lessees to recognize most leases on their balance sheets but record expenses on their income statements in a manner similar to current accounting. For lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. This guidance is effective for the Company beginning in the first quarter of fiscal year 2020. Early adoption is permitted. The Company is currently in the process of assessing the impact of the adoption of the new standard on its Condensed Consolidated Financial Statements and the timing of adoption.

In May 2014, the FASB issued ASU 2014-09, which requires an entity to recognize revenue relating to contracts with customers that depicts the transfer of promised goods or services to customers in an amount reflecting the consideration to which the entity expects to be entitled in exchange for such goods or services ("Topic 606"). Topic 606 also requires disclosures enabling users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers and is effective for the Company beginning in the first quarter of fiscal year 2019.

The Company developed a comprehensive project plan that includes a global cross-functional team of representatives to conduct an assessment of Topic 606 and its potential impacts on the Company. The project plan includes analyzing the standard’s impact on the Company’s various revenue streams, comparing its historical accounting policies and practices to the requirements of the new standard, and identifying potential differences from applying the requirements of the new standard to its contracts. The Company is in the process of identifying and implementing appropriate changes to its current accounting policies, business processes, systems and controls to support revenue recognition and disclosures under Topic 606.

The Company has determined that the new standard will result in a change to the timing of revenue recognition for a significant portion of the Company's revenue, whereby revenue will be recognized "over time," as products are produced, as opposed to at a "point in time" upon physical delivery. The new standard is expected to have a material impact on the Company's consolidated financial statements upon initial adoption, primarily as the Company recognizes an increase in contract assets for unbilled receivables with a corresponding reduction in finished goods and work-in-process inventory. The Company expects to adopt Topic 606 at the beginning of fiscal year 2019 using the modified retrospective approach.

The Company believes that no other recently issued accounting standards will have a material impact on its Consolidated Financial Statements, or apply to its operations.

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Inventories

6 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories as of March 31, 2018 and September 30, 2017 consisted of the following (in thousands):

	March 31, 2018		September 30, 2017
Raw materials	$	526,709	$	477,921
Work-in-process	89,437		86,367
Finished goods	85,520		90,354
Total inventories	$	701,666	$	654,642

In certain circumstances, per contractual terms, customer deposits are received by the Company to offset obsolete and excess inventory risks. The total amount of customer deposits related to inventory and included within current liabilities on the accompanying Condensed Consolidated Balance Sheets as of March 31, 2018 and September 30, 2017 was $102.2 million and $106.2 million, respectively.

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Debt, Capital Lease Obligations and Other Financing

6 Months Ended

Mar. 31, 2018

Debt and Capital Lease Obligations [Abstract]

Debt, Capital Lease Obligations and Other Financing

Debt, Capital Lease Obligations and Other Financing

Debt, capital lease and other obligations as of March 31, 2018 and September 30, 2017, consisted of the following (in thousands):

	March 31, 2018			September 30, 2017
5.20% Senior notes, due June 15, 2018	$	175,000		$	175,000
Borrowings under the credit facility	—			108,000
Capital lease and other financing obligations	33,626			30,901
Unamortized deferred financing fees	(637		)	(794		)
Total obligations	207,989			313,107
Less: current portion	(180,772		)	(286,934		)
Long-term debt and capital lease obligations, net of current portion	$	27,217		$	26,173

The Company has outstanding 5.20% Senior Notes, due on June 15, 2018 (the "Notes"). As of March 31, 2018 and September 30, 2017, $175.0 million was outstanding. The related Note Purchase Agreement contains certain financial covenants, which include a maximum total leverage ratio, a minimum interest coverage ratio and a minimum net worth test, all as defined in the agreement. As of March 31, 2018, the Company was in compliance with all such covenants relating to the Notes and the Note Purchase Agreement.

The Company also has a senior unsecured revolving credit facility (the "Credit Facility"), with a $300.0 million maximum commitment that expires on July 5, 2021. The Credit Facility may be further increased to $500.0 million, generally by mutual agreement of the Company and the lenders, subject to certain customary conditions. During the six months ended March 31, 2018, the highest daily borrowing was $208.0 million; the average daily borrowings were $108.5 million and the Company borrowed an aggregate of $503.5 million and repaid a total of $611.5 million of revolving borrowings under the Credit Facility. The Company was in compliance with all financial covenants relating to the Credit Agreement, which are generally consistent with those in the Note Purchase Agreement discussed above. The Company is required to pay a commitment fee on the daily unused revolver credit commitment based on the Company's leverage ratio; the fee was assessed at an annual rate of 0.175%, payable quarterly, as of March 31, 2018.

The fair value of the Company’s debt, excluding capital leases, was $176.4 million and $284.5 million as of March 31, 2018 and September 30, 2017, respectively. The carrying value of the Company's debt, excluding capital leases, was $175.0 million and $283.0 million as of March 31, 2018 and September 30, 2017, respectively. If measured at fair value in the financial statements, the Company's debt would be classified as Level 2 in the fair value hierarchy. Refer to Note 4, "Derivatives," for further information regarding the Company's fair value calculations and classifications.

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Derivatives

6 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

Derivatives

Derivatives:

All derivatives are recognized in the accompanying Condensed Consolidated Balance Sheets at their estimated fair value. The Company uses derivatives to manage the variability of foreign currency obligations. The Company has cash flow hedges related to variable rate debt and forecasted foreign currency obligations, in addition to non-designated hedges to manage foreign currency exposures associated with certain foreign currency denominated assets and liabilities. The Company does not enter into derivatives for speculative purposes.

U.S. GAAP, requires companies to recognize all derivative instruments as either assets or liabilities at fair value in the statement of financial position. Accordingly, the Company designates some foreign currency exchange contracts as cash flow hedges of forecasted foreign currency expenses.

Changes in the fair value of the derivatives that qualify as cash flow hedges are recorded in "Accumulated other comprehensive income (loss)" in the accompanying Condensed Consolidated Balance Sheets until earnings are affected by the variability of the cash flows. In the next twelve months, the Company estimates that $5.0 million of unrealized gains, net of tax, related to cash flow hedges will be reclassified from other comprehensive income (loss) into earnings. Changes in the fair value of the non-designated derivatives related to recognized foreign currency denominated assets and liabilities are recorded in "Miscellaneous other income (expense)" in the accompanying Condensed Consolidated Statements of Comprehensive Income (Loss).

The Company enters into forward currency exchange contracts for its Malaysian operations on a rolling basis. The Company had cash flow hedges outstanding with a notional value of $67.6 million as of March 31, 2018 and $67.0 million as of September 30, 2017. These forward currency contracts fix the exchange rates for the settlement of future foreign currency obligations that have yet to be realized. The total fair value of the forward currency exchange contracts was a $5.0 millionasset as of March 31, 2018 and a $2.0 million asset as of September 30, 2017.

The Company had additional forward currency exchange contracts outstanding as of March 31, 2018, with a notional value of $25.9 million; there were $10.6 million such contracts outstanding as of September 30, 2017. The Company did not designate these derivative instruments as hedging instruments. In accordance with U.S. GAAP, the net settlement amount (fair value) related to these contracts is recorded on the Condensed Consolidated Balance Sheets as either a current or long-term asset or liability, depending on the term. The change in fair value is recorded as an element of "Miscellaneous other income (expense)" within the Condensed Consolidated Statements of Comprehensive Income (Loss). The total fair value of these derivatives was a $0.1 millionasset as of March 31, 2018, and a $0.1 millionliability as of September 30, 2017.

The tables below present information regarding the fair values of derivative instruments and the effects of derivative instruments on the Company’s Condensed Consolidated Financial Statements:

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		March 31, 2018		September 30, 2017			March 31, 2018		September 30, 2017
Derivatives designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Forward currency forward contracts	Prepaid expenses and other	$	4,952	$	2,024	Other accrued liabilities	$	—	$	—

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		March 31, 2018		September 30, 2017			March 31, 2018		September 30, 2017
Derivatives not designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Forward currency forward contracts	Prepaid expenses and other	$	159	$	35	Other accrued liabilities	$	65	$	118

Derivative Impact on Accumulated Other Comprehensive Income (Loss)
for the Three Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) ("OCI") on Derivatives (Effective Portion)
	March 31, 2018		April 1, 2017
Forward currency forward contracts	$	3,625	$	1,175
Interest rate swaps	$	—	$	12

Derivative Impact on Gain (Loss) Recognized in Income
for the Three Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Classification of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
		March 31, 2018		April 1, 2017
Forward currency forward contracts	Selling and administrative expenses	$	224	$	(193	)
Forward currency forward contracts	Cost of sales	$	2,091	$	(1,843	)
Treasury Rate Locks	Interest expense	$	81	$	92
Interest rate swaps	Interest expense	$	—	$	(28	)

Derivatives Not Designated as Hedging Instruments	Location of (Loss) Gain Recognized on Derivatives in Income	Amount of (Loss) Gain on Derivatives Recognized in Income
		March 31, 2018			April 1, 2017
Forward currency forward contracts	Miscellaneous other income (expense)	$	(416	)	$	1,786

Derivative Impact on Accumulated Other Comprehensive Income (Loss)
for the Six Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in OCI on Derivatives (Effective Portion)
	March 31, 2018		April 1, 2017
Forward currency forward contracts	$	6,339	$	(4,043	)
Interest rate swaps	$	—	$	1

Derivative Impact on Gain (Loss) Recognized in Income
for the Six Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Classification of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
		March 31, 2018		April 1, 2017
Forward currency forward contracts	Selling and administrative expenses	$	329	$	(172	)
Forward currency forward contracts	Cost of sales	$	3,082	$	(1,662	)
Treasury Rate Locks	Interest expense	$	160	$	171
Interest rate swaps	Interest expense	$	—	$	(135	)

Derivatives Not Designated as Hedging Instruments	Location of (Loss) Gain Recognized on Derivatives in Income	Amount of (Loss) Gain on Derivatives Recognized in Income
		March 31, 2018			April 1, 2017
Forward currency forward contracts	Miscellaneous other income (expense)	$	(951	)	$	1,861

There were no gains or losses recognized in income for derivatives related to ineffective portions and amounts excluded from effectiveness testing for the three or six months ended March 31, 2018 and April 1, 2017.

Fair Value Measurements:

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (or exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The Company uses quoted market prices when available or discounted cash flows to calculate fair value. The accounting guidance establishes a fair value hierarchy based on three levels of inputs that may be used to measure fair value. The input levels are:

Level 1:  Quoted (observable) market prices in active markets for identical assets or liabilities.

Level 2:  Inputs other than Level 1 that are observable, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability.

Level 3:  Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability.

The following table lists the fair values of assets (liabilities) of the Company’s derivatives as of March 31, 2018 and September 30, 2017, by input level:

Fair Value Measurements Using Input Levels Asset/(Liability)
In thousands of dollars
March 31, 2018	Level 1		Level 2		Level 3		Total
Derivatives
Forward currency forward contracts	$	—	$	5,046	$	—	$	5,046
September 30, 2017
Derivatives
Forward currency forward contracts	$	—	$	1,941	$	—	$	1,941

The fair value of interest rate swaps and foreign currency forward contracts is determined using a market approach, which includes obtaining directly or indirectly observable values from third parties active in the relevant markets. The primary input in the fair value of the interest rate swaps is the relevant LIBOR forward curve. Inputs in the fair value of the foreign currency forward contracts include prevailing forward and spot prices for currency and interest rate forward curves.

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Income Taxes

6 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

On December 22, 2017, the U.S. Tax Cuts & Jobs Act was enacted ("Tax Reform"). Due to the complexities in implementing Tax Reform, the SEC issued Staff Accounting Bulletin 118, which allows the Company to record a provisional tax expense when uncertainty or other factors may impact the final outcome. In accordance with U.S. GAAP, which requires the Company to recognize the effects of Tax Reform in the period of enactment, $124.5 million of tax expense was recorded during the three months ended December 30, 2017. The $124.5 million included $101.8 million of U.S. federal and state taxes on the deemed repatriation of undistributed foreign earnings, which are payable over an eight year period beginning in fiscal 2019, and $22.7 million of foreign withholding taxes due to a change in the Company's permanently reinvested assertion on certain foreign earnings that are payable upon repatriation to the U.S. The Company continues to believe this is a reasonable estimate of tax expense related to Tax Reform using all analyses, interpretations and guidance available at this time. The Company continues to assess the impact of Tax Reform, and the final impact may differ from this estimate, perhaps materially, due to, among other things, changes in interpretations, assumptions, and/or guidance that may be issued in the near future or actions the Company may take as a result. For the three months ended March 31, 2018, there have been no changes in interpretations, assumptions and/or guidance that require an adjustment to the provisional tax expense the Company recorded during the three months ended December 30, 2017.

As of March 31, 2018, the Company reported outstanding liabilities of $121.8 million for Tax Reform, of which $91.9 million is recorded in "Long-term accrued income taxes payable", $20.0 million is recorded in "Deferred income tax liabilities" and $9.9 million is recorded in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheet. The total outstanding liabilities are lower than the Tax Reform expense of $124.5 million for the three months ended December 30, 2017 due to withholding taxes paid on dividends and the related foreign exchange impact during the three months ended March 31, 2018, which are recorded in "Miscellaneous other income (expense)" in the accompanying Condensed Consolidated Statements of Comprehensive Income (Loss).

Income tax expense for the three and six months ended March 31, 2018 was $2.4 million and $130.0 million, respectively. For the six months ended March 31, 2018, the tax expense of $130.0 million includes $124.5 million due to the impact of Tax Reform recorded during the three months ended December 30, 2017. Income tax expense for the three and six months ended April 1, 2017 was $3.1 million and $6.0 million, respectively.

The effective tax rates for the three and six months ended March 31, 2018 were 16.5% and 297.0%, respectively, compared to the effective tax rates of 9.6% and 9.4% for the three and six months ended April 1, 2017, respectively. The effective tax rate for the three months ended March 31, 2018 increased from the effective tax rate for the three months ended April 1, 2017, primarily due to a $13.5 million one-time bonus paid to full-time, non-executive employees ("one-time employee bonus") during the three months ended March 31, 2018, and a decrease in pre-tax earnings in jurisdictions where the Company maintains a valuation allowance. The effective tax rate for the six months ended March 31, 2018 increased from the effective tax rate for the six months ended April 1, 2017, primarily due to the impact of Tax Reform, the one-time employee bonus and a decrease in pre-tax earnings in jurisdictions where the Company maintains a valuation allowance.

There were no material additions to the amount of unrecognized tax benefits recorded for uncertain tax positions as of March 31, 2018, as compared to September 30, 2017. The Company recognizes accrued interest and penalties on uncertain tax positions as a component of income tax expense. The amount of interest and penalties recorded for the three and six months ended March 31, 2018 was not material.

One or more uncertain tax positions may be settled within the next 12 months. Settlement of these matters is not expected to have a material effect on the Company's consolidated results of operations, financial position and cash flows. The Company is not currently under examination by taxing authorities in the U.S. or any foreign jurisdictions in which the Company operates.

The Company maintains valuation allowances when it is more likely than not that all or a portion of a net deferred tax asset will not be realized. During the three months ended March 31, 2018, the Company continued to record a full valuation allowance against its net deferred tax assets in certain jurisdictions within the AMER and EMEA segments, as it was more likely than not that these assets would not be fully realized based primarily on historical performance. The Company will continue to provide a valuation allowance against its net deferred tax assets in each of the applicable jurisdictions going forward until it determines it is more likely than not that the deferred tax assets will be realized.

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Earnings Per Share

6 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

The following is a reconciliation of the amounts utilized in the computation of basic and diluted earnings per share for the three and six months ended March 31, 2018 and April 1, 2017 (in thousands, except per share amounts):

	Three Months Ended				Six Months Ended
	March 31, 2018		April 1, 2017		March 31, 2018			April 1, 2017
Net income (loss)	$	12,290	$	29,295	$	(86,203	)	$	57,474
Basic weighted average common shares outstanding	33,538		33,703		33,552			33,619
Dilutive effect of share-based awards outstanding	849		999		—			1,012
Diluted weighted average shares outstanding	34,387		34,702		33,552			34,631
Earnings (loss) per share:
Basic	$	0.37	$	0.87	$	(2.57	)	$	1.71
Diluted	$	0.36	$	0.84	$	(2.57	)	$	1.66

For the three and six months ended March 31, 2018, share-based awards for approximately 0.3 million shares were not included in the computation of diluted earnings per share as they were antidilutive. For the six months endedMarch 31, 2018, the total number of potentially dilutive share-based awards was 2.0 million. However, these awards were not included in the computation of diluted loss per share, as doing so would have decreased the loss per share.

For the three and six months ended April 1, 2017, share-based awards for approximately 0.1 million and 0.9 million shares, respectively, were not included in the computation of diluted earnings per share as they were antidilutive.

See also Note 11, "Shareholders' Equity," for information regarding the Company's share repurchase plans.

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Share-Based Compensation

6 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

Share-Based Compensation

The Company recognized $4.5 million and $8.4 million of compensation expense associated with the share-based awards for the three and six months ended March 31, 2018, respectively, and $4.4 million and $8.0 million for the three and six months ended April 1, 2017, respectively.

The Company uses the Black-Scholes valuation model to determine the fair value of stock options and stock-settled stock appreciation rights ("SARs"). The Company uses its stock price on grant date as the fair value assigned to restricted stock units ("RSUs").

Performance stock units ("PSUs") are payable in shares of the Company's common stock. Beginning for fiscal 2017 grants, PSUs vest based on the relative total shareholder return ("TSR") of the Company's common stock as compared to the companies in the Russell 3000 index, a market condition, and the Company's economic return performance during the three year performance period, a performance condition. The Company uses the Monte Carlo valuation model to determine the fair value of PSUs at the date of grant for PSUs that vest based on the relative TSR of the Company's common stock. The Company uses its stock price on grant date as the fair value assigned to PSUs that vest based on the Company's economic return performance. The PSUs granted in fiscal 2016 and prior years vest based solely on the relative TSR of the Company's common stock as compared to companies in the Russell 3000 Index during a three year performance period. The number of shares that may be issued pursuant to PSUs ranges from zero to 0.4 million and is dependent upon the Company's TSR and economic return performance over the applicable performance periods.

The Company recognizes share-based compensation expense over the share-based awards' vesting period.

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Litigation

6 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Litigation

Litigation

The Company is party to lawsuits in the ordinary course of business. Although the outcome of these legal matters cannot be predicted with certainty, management does not expect that these proceedings, individually or in the aggregate, will have a material positive or adverse effect on the Company’s consolidated financial position, results of operations or cash flows.

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Reportable Segments

6 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Reportable Segments

Reportable Segments

The Company uses an internal management reporting system, which provides important financial data to the chief operating decision maker to evaluate performance and allocate the Company’s resources on a regional basis. Net sales for segments are attributed to the region in which the product is manufactured or the service is performed. The services provided, manufacturing processes used, class of customers serviced and order fulfillment processes used are similar and generally interchangeable across the segments. A segment’s performance is evaluated based upon its operating income (loss). A segment’s operating income (loss) includes its net sales less cost of sales and selling and administrative expenses, but excludes corporate and other expenses. Corporate and other expenses primarily represent corporate selling and administrative expenses, and restructuring and other charges, if any, such as the one-time employee bonus. These costs are not allocated to the segments, as management excludes such costs when assessing the performance of the segments. Inter-segment transactions are generally recorded at amounts that approximate arm’s length transactions. The accounting policies for the segments are the same as for the Company taken as a whole.

Information about the Company’s three reportable segments for the three and six months ended March 31, 2018 and April 1, 2017, respectively, is as follows (in thousands):

	Three Months Ended						Six Months Ended
	March 31, 2018			April 1, 2017			March 31, 2018			April 1, 2017
Net sales:
AMER	$	301,835		$	272,064		$	600,878		$	586,715
APAC	350,375			309,758			696,498			619,727
EMEA	73,942			44,975			137,774			84,424
Elimination of inter-segment sales	(27,501		)	(22,448		)	(59,205		)	(51,498		)
	$	698,651		$	604,349		$	1,375,945		$	1,239,368
Operating income (loss):
AMER	$	10,702		$	8,229		$	21,225		$	23,026
APAC	49,171			50,484			99,703			98,724
EMEA	389			(1,221		)	(732		)	(3,456		)
Corporate and other costs	(42,947		)	(24,921		)	(71,324		)	(51,820		)
	$	17,315		$	32,571		$	48,872		$	66,474
Other income (expense):
Interest expense	(3,547		)	(3,262		)	(7,272		)	(6,536		)
Interest income	1,426			1,185			2,981			2,256
Miscellaneous	(477		)	1,925			(823		)	1,251
Income before income taxes	$	14,717		$	32,419		$	43,758		$	63,445

	March 31, 2018		September 30, 2017
Total assets:
AMER	$	599,331	$	595,851
APAC	984,816		1,163,111
EMEA	190,426		172,830
Corporate and eliminations	135,401		44,390
	$	1,909,974	$	1,976,182

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Guarantees

6 Months Ended

Mar. 31, 2018

Guarantees [Abstract]

Guarantees

Guarantees

The Company offers certain indemnifications under its customer manufacturing agreements. In the normal course of business, the Company may from time to time be obligated to indemnify its customers or its customers’ customers against damages or liabilities arising out of the Company’s negligence, misconduct, breach of contract, or infringement of third party intellectual property rights. Certain agreements have extended broader indemnification, and while most agreements have contractual limits, some do not. However, the Company generally does not provide for such indemnities and seeks indemnification from its customers for damages or liabilities arising out of the Company’s adherence to customers’ specifications or designs or use of materials furnished, or directed to be used, by its customers. The Company does not believe its obligations under such indemnities are material.

In the normal course of business, the Company also provides its customers a limited warranty covering workmanship, and in some cases materials, on products manufactured by the Company. Such warranty generally provides that products will be free from defects in the Company’s workmanship and meet mutually agreed-upon specifications for periods generally ranging from 12 months to 24 months. If a product fails to comply with the Company’s limited warranty, the Company’s obligation is generally limited to correcting, at its expense, any defect by repairing or replacing such defective product. The Company’s warranty generally excludes defects resulting from faulty customer-supplied components, customer design defects or damage caused by any party other than the Company.

The Company provides for an estimate of costs that may be incurred under its limited warranty at the time product revenue is recognized and establishes additional reserves for specifically identified product issues. These costs primarily include labor and materials, as necessary, associated with repair or replacement and are included in the Company's accompanying Condensed Consolidated Balance Sheets in "Other accrued liabilities." The primary factors that affect the Company’s warranty liability include the value and the number of shipped units and historical and anticipated rates of warranty claims. As these factors are impacted by actual experience and future expectations, the Company assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary.

Below is a table summarizing the activity related to the Company’s limited warranty liability for the six months endedMarch 31, 2018 and April 1, 2017 (in thousands):

	Six Months Ended
	March 31, 2018			April 1, 2017
Reserve balance, beginning of period	$	4,756		$	6,109
Accruals for warranties issued during the period	2,131			869
Settlements (in cash or in kind) during the period	(1,579		)	(1,799		)
Reserve balance, end of period	$	5,308		$	5,179

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Shareholders' Equity

6 Months Ended

Mar. 31, 2018

Stockholders' Equity Note [Abstract]

Shareholders' Equity

Shareholders' Equity

On June 6, 2016, the Board of Directors approved a multi-year stock repurchase program under which the Company is authorized to repurchase up to $150.0 million of its common stock (the "2016 Share Repurchase Plan"). During the three months endedMarch 31, 2018, the Company repurchased 512,943 shares for approximately $31.6 million, at an average price of $61.63 per share. During the six months endedMarch 31, 2018, the company repurchased 671,409 shares for approximately $41.2 million at an average price of $61.30 per share. During the three months endedApril 1, 2017, the Company repurchased 123,082 shares for approximately $6.8 million, at an average price of $55.61 per share. During the six months endedApril 1, 2017, the company repurchased 267,811 shares for approximately $13.9 million at an average price of $51.93 per share.

All of the purchases under the 2016 Share Repurchase Plan were recorded as treasury stock.

On February 14, 2018, the Board of Directors approved a new stock repurchase plan under which the Company is authorized to repurchase $200.0 million of its common stock commencing upon completion of the 2016 Share Repurchase Plan (the "2018 Share Repurchase Plan"). No purchases have yet been made under the 2018 Share Repurchase Plan.

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Trade Accounts Receivable Sale Programs

6 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Trade Accounts Receivable Sale Programs

Trade Accounts Receivable Sale Programs

The Company has Master Accounts Receivable Purchase Agreements with The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch (the "BTMU RPA") and HSBC Bank (China) Company Limited, Xiamen branch (the "HSBC RPA") under which the Company may elect to sell receivables, at a discount, on an ongoing basis. As of March 31, 2018, the maximum facility amounts of these uncommitted facilities were $160.0 million and $60.0 million, respectively. The BTMU RPA is subject to expiration on October 3, 2018, but will be automatically extended each year unless any party gives no less than 10 days prior notice that the agreement should not be extended. The terms of the HSBC RPA are generally consistent with the terms of the BTMU RPA discussed above.

The Company previously sold receivables under a former trade accounts receivable sale program that expired during the first fiscal quarter of 2017.

Receivables sold under the programs are excluded from accounts receivable on the Condensed Consolidated Balance Sheets and are reflected as cash provided by operating activities on the Condensed Consolidated Statements of Cash Flows. Proceeds from the transfer reflect the face value of the receivables less a discount. The sale discount is recorded within "Miscellaneous other income (expense)" in the Condensed Consolidated Statements of Comprehensive Income (Loss) in the period of the sale.

The Company sold $135.9 million and $91.5 million of trade accounts receivable under these programs during the three months endedMarch 31, 2018 and April 1, 2017, respectively, in exchange for cash proceeds of $135.2 million and $91.1 million, respectively.

The Company sold $298.3 million and $169.3 million of trade accounts receivable during the six months endedMarch 31, 2018 and April 1, 2017, respectively, in exchange for cash proceeds of $296.7 million and $168.5 million, respectively.

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Basis of Presentation (Policies)

6 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation:

The accompanying Condensed Consolidated Financial Statements included herein have been prepared by Plexus Corp. and its subsidiaries (together “Plexus” or the “Company”) without audit and pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (“SEC”). The accompanying Condensed Consolidated Financial Statements reflect all adjustments, which include normal recurring adjustments necessary for the fair statement of the consolidated financial position of the Company as of March 31, 2018 and September 30, 2017, and the results of operations for the three and six months ended March 31, 2018 and April 1, 2017, and the cash flows for the same six month periods.

The Company’s fiscal year ends on the Saturday closest to September 30. The Company uses a “4-4-5” weekly accounting system for the interim periods in each quarter. Each quarter, therefore, ends on a Saturday at the end of the 4-4-5 period. Periodically, an additional week must be added to the fiscal year to re-align with the Saturday closest to September 30. All fiscal quarters presented herein included 13 weeks.

Certain information and footnote disclosures, normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"), have been condensed or omitted pursuant to the SEC’s rules and regulations dealing with interim financial statements. However, the Company believes that the disclosures made in the Condensed Consolidated Financial Statements included herein are adequate to make the information presented not misleading. It is suggested that these Condensed Consolidated Financial Statements be read in conjunction with the Consolidated Financial Statements and notes thereto included in the Company’s 2017 Annual Report on Form 10-K.

Certain prior period amounts have been reclassified to conform to the current period presentation.

Recently Issued Accounting Pronouncements Not Yet Adopted

Recently Issued Accounting Pronouncements Not Yet Adopted:

In August 2017, the Financial Accounting Standards Board (the "FASB") issued ASU 2017-12 related to the accounting for hedging activities. The pronouncement expands and refines hedge accounting, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. This guidance is effective for the Company beginning in the first quarter of fiscal year 2020 and early adoption is permitted. The Company is finalizing its assessment of the impact of the guidance, but does not believe it will have a material impact on the Company's Condensed Consolidated Financial Statements.

In October 2016, the FASB issued ASU 2016-16 related to the income tax consequences of intra-entity transfers of assets other than inventory. The new standard eliminates the exception for an intra-entity transfer of an asset other than inventory and requires an entity to recognize the income tax consequences when the transfer occurs. This guidance is effective for the Company beginning in the first quarter of fiscal year 2019 and early adoption is permitted. This guidance should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company is currently assessing the impact this new standard may have on its Condensed Consolidated Financial Statements.

In August 2016, the FASB issued ASU 2016-15 related to the classification of certain cash receipts and cash payments, which clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows. The new standard addresses certain issues where diversity in practice was identified. It also amends existing guidance, which is principles based and often requires judgment to determine the appropriate classification of cash flows as operating, investing or financing activities and clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. This guidance is effective for the Company beginning in the first quarter of fiscal year 2019. Early adoption is permitted. The Company is currently assessing the impact this new standard may have on its Condensed Consolidated Statements of Cash Flows.

In February 2016, the FASB issued ASU 2016-02, which requires lessees to recognize most leases on their balance sheets but record expenses on their income statements in a manner similar to current accounting. For lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. This guidance is effective for the Company beginning in the first quarter of fiscal year 2020. Early adoption is permitted. The Company is currently in the process of assessing the impact of the adoption of the new standard on its Condensed Consolidated Financial Statements and the timing of adoption.

In May 2014, the FASB issued ASU 2014-09, which requires an entity to recognize revenue relating to contracts with customers that depicts the transfer of promised goods or services to customers in an amount reflecting the consideration to which the entity expects to be entitled in exchange for such goods or services ("Topic 606"). Topic 606 also requires disclosures enabling users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers and is effective for the Company beginning in the first quarter of fiscal year 2019.

The Company developed a comprehensive project plan that includes a global cross-functional team of representatives to conduct an assessment of Topic 606 and its potential impacts on the Company. The project plan includes analyzing the standard’s impact on the Company’s various revenue streams, comparing its historical accounting policies and practices to the requirements of the new standard, and identifying potential differences from applying the requirements of the new standard to its contracts. The Company is in the process of identifying and implementing appropriate changes to its current accounting policies, business processes, systems and controls to support revenue recognition and disclosures under Topic 606.

The Company has determined that the new standard will result in a change to the timing of revenue recognition for a significant portion of the Company's revenue, whereby revenue will be recognized "over time," as products are produced, as opposed to at a "point in time" upon physical delivery. The new standard is expected to have a material impact on the Company's consolidated financial statements upon initial adoption, primarily as the Company recognizes an increase in contract assets for unbilled receivables with a corresponding reduction in finished goods and work-in-process inventory. The Company expects to adopt Topic 606 at the beginning of fiscal year 2019 using the modified retrospective approach.

The Company believes that no other recently issued accounting standards will have a material impact on its Consolidated Financial Statements, or apply to its operations.

Fair Value Measurements

Fair Value Measurements:

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (or exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The Company uses quoted market prices when available or discounted cash flows to calculate fair value. The accounting guidance establishes a fair value hierarchy based on three levels of inputs that may be used to measure fair value. The input levels are:

Level 1:  Quoted (observable) market prices in active markets for identical assets or liabilities.

Level 2:  Inputs other than Level 1 that are observable, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability.

Level 3:  Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability.

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Inventories (Tables)

6 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories as of March 31, 2018 and September 30, 2017 consisted of the following (in thousands):

	March 31, 2018		September 30, 2017
Raw materials	$	526,709	$	477,921
Work-in-process	89,437		86,367
Finished goods	85,520		90,354
Total inventories	$	701,666	$	654,642

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Debt, Capital Lease Obligations and Other Financing (Tables)

6 Months Ended

Mar. 31, 2018

Debt and Capital Lease Obligations [Abstract]

Schedule of Debt and Capital Lease Obligations

Debt, capital lease and other obligations as of March 31, 2018 and September 30, 2017, consisted of the following (in thousands):

	March 31, 2018			September 30, 2017
5.20% Senior notes, due June 15, 2018	$	175,000		$	175,000
Borrowings under the credit facility	—			108,000
Capital lease and other financing obligations	33,626			30,901
Unamortized deferred financing fees	(637		)	(794		)
Total obligations	207,989			313,107
Less: current portion	(180,772		)	(286,934		)
Long-term debt and capital lease obligations, net of current portion	$	27,217		$	26,173

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Derivatives (Tables)

6 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Fair Values of Derivative Instruments

The tables below present information regarding the fair values of derivative instruments and the effects of derivative instruments on the Company’s Condensed Consolidated Financial Statements:

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		March 31, 2018		September 30, 2017			March 31, 2018		September 30, 2017
Derivatives designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Forward currency forward contracts	Prepaid expenses and other	$	4,952	$	2,024	Other accrued liabilities	$	—	$	—

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		March 31, 2018		September 30, 2017			March 31, 2018		September 30, 2017
Derivatives not designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Forward currency forward contracts	Prepaid expenses and other	$	159	$	35	Other accrued liabilities	$	65	$	118

Schedule of Derivative Impact on Accumulated Other Comprehensive Income (Loss)

Derivative Impact on Accumulated Other Comprehensive Income (Loss)
for the Three Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) ("OCI") on Derivatives (Effective Portion)
	March 31, 2018		April 1, 2017
Forward currency forward contracts	$	3,625	$	1,175
Interest rate swaps	$	—	$	12

Derivative Impact on Accumulated Other Comprehensive Income (Loss)
for the Six Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in OCI on Derivatives (Effective Portion)
	March 31, 2018		April 1, 2017
Forward currency forward contracts	$	6,339	$	(4,043	)
Interest rate swaps	$	—	$	1

Schedule of Derivative Impact on Gain (Loss) Recognized in Income

Derivative Impact on Gain (Loss) Recognized in Income
for the Three Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Classification of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
		March 31, 2018		April 1, 2017
Forward currency forward contracts	Selling and administrative expenses	$	224	$	(193	)
Forward currency forward contracts	Cost of sales	$	2,091	$	(1,843	)
Treasury Rate Locks	Interest expense	$	81	$	92
Interest rate swaps	Interest expense	$	—	$	(28	)

Derivative Impact on Gain (Loss) Recognized in Income
for the Six Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Classification of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
		March 31, 2018		April 1, 2017
Forward currency forward contracts	Selling and administrative expenses	$	329	$	(172	)
Forward currency forward contracts	Cost of sales	$	3,082	$	(1,662	)
Treasury Rate Locks	Interest expense	$	160	$	171
Interest rate swaps	Interest expense	$	—	$	(135	)

Schedule of Amount of Gain (Loss) on Derivatives Recognized in Income

Derivatives Not Designated as Hedging Instruments	Location of (Loss) Gain Recognized on Derivatives in Income	Amount of (Loss) Gain on Derivatives Recognized in Income
		March 31, 2018			April 1, 2017
Forward currency forward contracts	Miscellaneous other income (expense)	$	(416	)	$	1,786

Derivatives Not Designated as Hedging Instruments	Location of (Loss) Gain Recognized on Derivatives in Income	Amount of (Loss) Gain on Derivatives Recognized in Income
		March 31, 2018			April 1, 2017
Forward currency forward contracts	Miscellaneous other income (expense)	$	(951	)	$	1,861

Schedule of Derivatives Fair Value Measurements Using Input Levels

The following table lists the fair values of assets (liabilities) of the Company’s derivatives as of March 31, 2018 and September 30, 2017, by input level:

Fair Value Measurements Using Input Levels Asset/(Liability)
In thousands of dollars
March 31, 2018	Level 1		Level 2		Level 3		Total
Derivatives
Forward currency forward contracts	$	—	$	5,046	$	—	$	5,046
September 30, 2017
Derivatives
Forward currency forward contracts	$	—	$	1,941	$	—	$	1,941

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Earnings Per Share (Tables)

6 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Reconciliation of Amounts Utilized in Computation of Basic and Diluted Earnings Per Share

The following is a reconciliation of the amounts utilized in the computation of basic and diluted earnings per share for the three and six months ended March 31, 2018 and April 1, 2017 (in thousands, except per share amounts):

	Three Months Ended				Six Months Ended
	March 31, 2018		April 1, 2017		March 31, 2018			April 1, 2017
Net income (loss)	$	12,290	$	29,295	$	(86,203	)	$	57,474
Basic weighted average common shares outstanding	33,538		33,703		33,552			33,619
Dilutive effect of share-based awards outstanding	849		999		—			1,012
Diluted weighted average shares outstanding	34,387		34,702		33,552			34,631
Earnings (loss) per share:
Basic	$	0.37	$	0.87	$	(2.57	)	$	1.71
Diluted	$	0.36	$	0.84	$	(2.57	)	$	1.66

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Reportable Segments (Tables)

6 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Schedule of Reportable Segments Information

	Three Months Ended						Six Months Ended
	March 31, 2018			April 1, 2017			March 31, 2018			April 1, 2017
Net sales:
AMER	$	301,835		$	272,064		$	600,878		$	586,715
APAC	350,375			309,758			696,498			619,727
EMEA	73,942			44,975			137,774			84,424
Elimination of inter-segment sales	(27,501		)	(22,448		)	(59,205		)	(51,498		)
	$	698,651		$	604,349		$	1,375,945		$	1,239,368
Operating income (loss):
AMER	$	10,702		$	8,229		$	21,225		$	23,026
APAC	49,171			50,484			99,703			98,724
EMEA	389			(1,221		)	(732		)	(3,456		)
Corporate and other costs	(42,947		)	(24,921		)	(71,324		)	(51,820		)
	$	17,315		$	32,571		$	48,872		$	66,474
Other income (expense):
Interest expense	(3,547		)	(3,262		)	(7,272		)	(6,536		)
Interest income	1,426			1,185			2,981			2,256
Miscellaneous	(477		)	1,925			(823		)	1,251
Income before income taxes	$	14,717		$	32,419		$	43,758		$	63,445

	March 31, 2018		September 30, 2017
Total assets:
AMER	$	599,331	$	595,851
APAC	984,816		1,163,111
EMEA	190,426		172,830
Corporate and eliminations	135,401		44,390
	$	1,909,974	$	1,976,182

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Guarantees (Tables)

6 Months Ended

Mar. 31, 2018

Guarantees [Abstract]

Schedule of Activity Related to Limited Warranty Liability

Below is a table summarizing the activity related to the Company’s limited warranty liability for the six months endedMarch 31, 2018 and April 1, 2017 (in thousands):

	Six Months Ended
	March 31, 2018			April 1, 2017
Reserve balance, beginning of period	$	4,756		$	6,109
Accruals for warranties issued during the period	2,131			869
Settlements (in cash or in kind) during the period	(1,579		)	(1,799		)
Reserve balance, end of period	$	5,308		$	5,179

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Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 526,709	$ 477,921
Work-in-process	89,437	86,367
Finished goods	85,520	90,354
Total inventories	$ 701,666	$ 654,642

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Inventories - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Inventory [Line Items]
Customer deposits	$ 104,914	$ 107,837
Inventory
Inventory [Line Items]
Customer deposits	$ 102,200	$ 106,200

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Debt, Capital Lease Obligations and Other Financing - Schedule of Debt and Capital Lease Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Debt Instrument [Line Items]
Long-term debt, gross	$ 175,000	$ 283,000
Capital lease and other financing obligations	33,626	30,901
Unamortized deferred financing fees	(637)	(794)
Total obligations	207,989	313,107
Less: current portion	(180,772)	(286,934)
Long-term debt and capital lease obligations, net of current portion	27,217	26,173
Senior Notes | 5.20% Senior notes, due June 15, 2018
Debt Instrument [Line Items]
Long-term debt, gross	$ 175,000	$ 175,000
Interest rate	5.20%	5.20%
Line of Credit | Borrowings under the credit facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	$ 108,000

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Debt, Capital Lease Obligations and Other Financing - Narrative (Details) - USD ($)	3 Months Ended	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2018	Apr. 01, 2017	Sep. 30, 2017
Debt Instrument [Line Items]
Amount of debt outstanding	$ 175,000,000	$ 175,000,000		$ 283,000,000
Amount borrowed		504,616,000	$ 97,926,000
Debt, Fair Value	176,400,000	176,400,000		284,500,000
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum commitment	300,000,000.0	300,000,000.0
Amount credit facility may be further increased	$ 500,000,000.0	500,000,000.0
Highest daily borrowings		208,000,000
Average daily borrowings		108,500,000
Annual commitment fee	0.175%
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Amount of debt outstanding	$ 0	0		$ 108,000,000
Amount borrowed		503,500,000
Amount repaid		$ 611,500,000
5.20% Senior Notes | Senior Notes
Debt Instrument [Line Items]
Interest rate	5.20%	5.20%		5.20%
Amount of debt outstanding	$ 175,000,000	$ 175,000,000		$ 175,000,000

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Derivatives - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017	Sep. 30, 2017
Estimated unrealized gains, net of tax, expected to be reclassified in next 12 months			$ 5,000,000
Gains (losses) recognized in income for derivatives related to ineffective portions and amounts excluded from effectiveness testing	$ 0	$ 0	0	$ 0
Derivatives designated as hedging instruments | Derivatives in Cash Flow Hedging Relationships | Forward currency forward contracts
Notional amount of forward exchange contracts	67,600,000		67,600,000		$ 67,000,000
Fair value of derivative asset	5,000,000		5,000,000		2,000,000
Derivatives not designated as hedging instruments | Forward currency forward contracts
Notional amount of forward exchange contracts	25,900,000		25,900,000		10,600,000
Fair value of derivative asset	$ 100,000		$ 100,000
Fair value of derivative liability					$ 100,000

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Derivatives - Schedule of Fair Values of Derivative Instruments (Details) - Forward currency forward contracts - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 100
Liability Derivatives		$ 100
Prepaid expenses and other | Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Asset Derivatives	4,952	2,024
Prepaid expenses and other | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Asset Derivatives	159	35
Other accrued liabilities | Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Liability Derivatives	0	0
Other accrued liabilities | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 65	$ 118

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Derivatives - Schedule of the Effect of Derivative Instruments on the Statements of Operations (Details) - Derivatives designated as hedging instruments - Derivatives in Cash Flow Hedging Relationships - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Forward currency forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) (OCI) on Derivatives (Effective Portion)	$ 3,625	$ 1,175	$ 6,339	$ (4,043)
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) (OCI) on Derivatives (Effective Portion)	$ 0	$ 12	$ 0	$ 1

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Derivatives - Gain (Loss) Recognized in Income from Derivatives (Details) - Derivatives designated as hedging instruments - Derivatives in Cash Flow Hedging Relationships - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Forward currency forward contracts | Selling and administrative expenses
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ 224	$ (193)	$ 329	$ (172)
Forward currency forward contracts | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	2,091	(1,843)	3,082	(1,662)
Treasury Rate Locks | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	81	92	160	171
Interest rate swaps | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ 0	$ (28)	$ 0	$ (135)

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Derivatives - Gain (Loss) on Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Derivatives not designated as hedging instruments | Forward currency forward contracts | Miscellaneous other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ (416)	$ 1,786	$ (951)	$ 1,861

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Derivatives - Schedule of Fair Value Measurements Using Input Levels (Details) - Recurring - Forward currency forward contracts - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Derivative asset	$ 5,046	$ 1,941
Level 1
Derivative asset	0	0
Level 2
Derivative asset	5,046	1,941
Level 3
Derivative asset	$ 0	$ 0

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Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Tax Cuts and Jobs Act of 2017 [Line Items]
Tax Reform Income Tax Expense		$ 124,500
Transition Tax for Accumulated Foreign Earnings		101,800
Deferred Tax Liabilities, Undistributed Foreign Earnings		$ 22,700
Liabilities due to U.S. Tax Reform	$ 121,800			$ 121,800
Income tax expense	$ 2,427		$ 3,124	$ 129,961	$ 5,971
Effective income tax rate	16.50%		9.60%	297.00%	9.40%
One-time Employee Bonus Impact on Effective Income Tax Rate	$ 13,500
Long-term accrued income taxes payable
Tax Cuts and Jobs Act of 2017 [Line Items]
Tax Reform Income Tax Expense	91,900
Deferred income tax liabilities
Tax Cuts and Jobs Act of 2017 [Line Items]
Tax Reform Income Tax Expense	20,000
Other accrued liabilities
Tax Cuts and Jobs Act of 2017 [Line Items]
Tax Reform Income Tax Expense	$ 9,900

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Earnings Per Share - Reconciliation of Amounts Utilized in Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Earnings Per Share [Abstract]
Net income (loss)	$ 12,290	$ 29,295	$ (86,203)	$ 57,474
Basic weighted average common shares outstanding (in shares)	33,538	33,703	33,552	33,619
Dilutive effect of share-based awards outstanding (in shares)	849	999	0	1,012
Diluted weighted average shares outstanding (in shares)	34,387	34,702	33,552	34,631
Earnings (loss) per share:
Basic (in dollars per share)	$ 0.37	$ 0.87	$ (2.57)	$ 1.71
Diluted (in dollars per share)	$ 0.36	$ 0.84	$ (2.57)	$ 1.66

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Earnings Per Share - Narrative (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted earnings per share (in shares)			2.0
Share-based awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted earnings per share (in shares)	0.3	0.1	0.3	0.9

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Share-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	$ 4,500	$ 4,400	$ 8,400	$ 8,000
Performance Shares [Member] | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares that may be issued (in shares)	0		0
Performance Shares [Member] | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares that may be issued (in shares)	400,000		400,000

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Reportable Segments - Reportable Segments Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017	Sep. 30, 2017
Net sales	$ 698,651	$ 604,349	$ 1,375,945	$ 1,239,368
Operating income (loss)	17,315	32,571	48,872	66,474
Interest expense	(3,547)	(3,262)	(7,272)	(6,536)
Interest income	1,426	1,185	2,981	2,256
Miscellaneous	(477)	1,925	(823)	1,251
Income before income taxes	14,717	32,419	43,758	63,445
Total assets	1,909,974		1,909,974		$ 1,976,182
Elimination of inter-segment sales
Net sales	(27,501)	(22,448)	(59,205)	(51,498)
Corporate
Operating income (loss)	(42,947)	(24,921)	(71,324)	(51,820)
Corporate and eliminations
Total assets	135,401		135,401		44,390
AMER | Operating Segments
Net sales	301,835	272,064	600,878	586,715
Operating income (loss)	10,702	8,229	21,225	23,026
Total assets	599,331		599,331		595,851
APAC | Operating Segments
Net sales	350,375	309,758	696,498	619,727
Operating income (loss)	49,171	50,484	99,703	98,724
Total assets	984,816		984,816		1,163,111
EMEA | Operating Segments
Net sales	73,942	44,975	137,774	84,424
Operating income (loss)	389	$ (1,221)	(732)	$ (3,456)
Total assets	$ 190,426		$ 190,426		$ 172,830

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Reportable Segments - Narrative (Details)	6 Months Ended
	Mar. 31, 2018 segment
Segment Reporting [Abstract]
Number of reportable segments	3

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Guarantees - Narrative (Details)	6 Months Ended
	Mar. 31, 2018
Minimum
Product Warranty Liability [Line Items]
Product warranty specification period	12 months
Maximum
Product Warranty Liability [Line Items]
Product warranty specification period	24 months

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Guarantees - Schedule of Activity Related to Limited Warranty Liability (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Movement in Standard Product Warranty Accrual [Roll Forward]
Limited warranty liability, beginning balance	$ 4,756	$ 6,109
Accruals for warranties issued during the period	2,131	869
Settlements (in cash or in kind) during the period	(1,579)	(1,799)
Limited warranty liability, ending balance	$ 5,308	$ 5,179

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Shareholders' Equity - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017	Feb. 14, 2018	Jun. 06, 2016
2016 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized repurchase amount						$ 150,000,000
Amount repurchased (in shares)	512,943	123,082	671,409	267,811
Amount repurchased	$ 31,600,000	$ 6,800,000	$ 41,200,000	$ 13,900,000
Average repurchase price (in dollars per share)	$ 61.63	$ 55.61	$ 61.30	$ 51.93
2018 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized repurchase amount					$ 200,000,000.0

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Trade Accounts Receivable Sale Programs - Narrative (Details) - USD ($)			3 Months Ended		6 Months Ended
	Oct. 19, 2017	Mar. 17, 2017	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Amount Received From Trade Accounts Receivable Sold To Third Party [Line Items]
Trade Accounts Receivables Sold			$ 135,900,000	$ 91,500,000	$ 298,300,000	$ 169,300,000
Cash Proceeds Received from Trade Accounts Receivable Sold			$ 135,200,000	$ 91,100,000	$ 296,700,000	$ 168,500,000
BTMU RPA
Amount Received From Trade Accounts Receivable Sold To Third Party [Line Items]
Maximum facility amount	$ 160,000,000.000
Minimum prior notice required to cancel automatic extension					10 days
HSBC RPA
Amount Received From Trade Accounts Receivable Sold To Third Party [Line Items]
Maximum facility amount		$ 60,000,000.000