10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2018 Commission file number 1–6770

MUELLER INDUSTRIES, INC.

(Exact name of registrant as specified in its charter)

Delaware	25-0790410
(State or other jurisdiction	(I.R.S. Employer
of incorporation or organization)	Identification No.)

8285 Tournament Drive, Suite 150
Memphis, Tennessee	38125
(Address of principal executive offices)	(Zip Code)

(901) 753-3200

(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   ☒    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   ☒    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”, and “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer    ☒	Accelerated filer    ☐
Non-accelerated filer    ☐	Smaller reporting company    ☐
	Emerging growth 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   ☒

The number of shares of the Registrant’s common stock outstanding as of July 20, 2018 was 57,590,703.

MUELLER INDUSTRIES, INC.

FORM 10-Q

For the Quarterly Period Ended June 30, 2018

As used in this report, the terms “Company,” “Mueller,” and “Registrant” mean Mueller Industries, Inc. and its consolidated subsidiaries taken as a whole, unless the context indicates otherwise.

INDEX

		Page Number
Part I.  Financial Information
	Item 1.   – Financial Statements (Unaudited)
	a.)  Condensed Consolidated Statements of Income	3
	b.)  Condensed Consolidated Statements of Comprehensive Income	4
	c.)  Condensed Consolidated Balance Sheets	5
	d.)  Condensed Consolidated Statements of Cash Flows	6
	e.)  Notes to Condensed Consolidated Financial Statements	7
	Item 2.   – Management's Discussion and Analysis of Financial Condition and Results of Operations	26
	Item 3.   – Quantitative and Qualitative Disclosures About Market Risk	36
	Item 4.   – Controls and Procedures	37
Part II.  Other Information
	Item 1.   – Legal Proceedings	38
	Item 1A – Risk Factors	38
	Item 2.   – Unregistered Sales of Equity Securities and Use of Proceeds	38
	Item 6.   – Exhibits	39
Signatures		40

2

PART I. FINANCIAL INFORMATION

Item 1.  Financial Statements

MUELLER INDUSTRIES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

	For the Quarter Ended						For the Six Months Ended
(In thousands, except per share data)	June 30, 2018			July 1, 2017(1)			June 30, 2018			July 1, 2017 (1)
Net sales	$	662,773		$	614,266		$	1,302,833		$	1,192,186
Cost of goods sold	563,820			524,311			1,109,490			1,012,738
Depreciation and amortization	9,006			8,595			18,462			16,950
Selling, general, and administrative expense	38,428			36,299			72,485			71,873
(Gain) loss on sale of assets	(409		)	(1,631		)	3,060			(1,631		)
Operating income	51,928			46,692			99,336			92,256
Interest expense	(6,073		)	(6,442		)	(11,982		)	(8,973		)
Other income, net	586			342			1,146			936
Income before income taxes	46,441			40,592			88,500			84,219
Income tax expense	(12,411		)	(12,650		)	(19,806		)	(24,579		)
Loss from unconsolidated affiliates, net of foreign tax	(148		)	(109		)	(10,468		)	(1,352		)
Consolidated net income	33,882			27,833			58,226			58,288
Net income attributable to noncontrolling interests	(700		)	(200		)	(916		)	(668		)
Net income attributable to Mueller Industries, Inc.	$	33,182		$	27,633		$	57,310		$	57,620
Weighted average shares for basic earnings per share	56,797			56,906			56,848			56,843
Effect of dilutive stock-based awards	514			511			516			585
Adjusted weighted average shares for diluted earnings per share	57,311			57,417			57,364			57,428
Basic earnings per share	$	0.58		$	0.49		$	1.01		$	1.01
Diluted earnings per share	$	0.58		$	0.48		$	1.00		$	1.00
Dividends per share	$	0.10		$	0.10		$	0.20		$	8.20

See accompanying notes to condensed consolidated financial statements.

⁽¹⁾ The Condensed Consolidated Statements of Income for the quarter and six months ended July 1, 2017 have been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income. Refer to Note 1 for further discussion.

3

MUELLER INDUSTRIES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

	For the Quarter Ended						For the Six Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Consolidated net income	$	33,882		$	27,833		$	58,226		$	58,288
Other comprehensive income (loss), net of tax:
Foreign currency translation	(11,622		)	906			(6,645		)	8,116
Net change with respect to derivative instruments and hedging activities, net of tax of $(3), $(89), $276, and $(185)	35			261			(1,027		)	317
Net change in pension and postretirement obligation adjustments, net of tax of $(322), $172, $(142), and $183	950			(405		)	499			(365		)
Attributable to unconsolidated affiliates, net of tax of $(35), $(704), $81, and $199	121			1,247			(280		)	(351		)
Other, net	—			(236		)	—			(380		)
Total other comprehensive (loss) income, net	(10,516		)	1,773			(7,453		)	7,337
Consolidated comprehensive income	23,366			29,606			50,773			65,625
Comprehensive income attributable to noncontrolling interests	(670		)	(386		)	(1,063		)	(1,503		)
Comprehensive income attributable to Mueller Industries, Inc.	$	22,696		$	29,220		$	49,710		$	64,122

See accompanying notes to condensed consolidated financial statements.

4

MUELLER INDUSTRIES, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(In thousands, except share data)	June 30, 2018			December 30, 2017
Assets
Current assets:
Cash and cash equivalents	$	281,445		$	120,269
Accounts receivable, less allowance for doubtful accounts of $760 in 2018 and $980 in 2017	333,903			244,795
Inventories	294,540			327,901
Other current assets	27,625			46,150
Total current assets	937,513			739,115
Property, plant, and equipment, net	284,836			304,321
Goodwill, net	139,012			130,293
Intangible assets, net	39,237			42,008
Investment in unconsolidated affiliates	70,065			76,434
Other assets	25,721			28,002
Total assets	$	1,496,384		$	1,320,173
Liabilities
Current liabilities:
Current portion of debt	$	59,952		$	16,480
Accounts payable	112,090			102,503
Accrued wages and other employee costs	31,550			33,546
Other current liabilities	69,882			89,723
Total current liabilities	273,474			242,252
Long-term debt, less current portion	558,534			448,592
Pension liabilities	10,245			11,606
Postretirement benefits other than pensions	16,754			17,107
Environmental reserves	22,984			23,699
Deferred income taxes	19,650			19,403
Other noncurrent liabilities	22,654			21,486
Total liabilities	924,295			784,145
Equity
Mueller Industries, Inc. stockholders' equity:
Preferred stock - $1.00 par value; shares authorized 5,000,000; none outstanding	—			—
Common stock - $.01 par value; shares authorized 100,000,000; issued 80,183,004; outstanding 57,590,703 in 2018 and 57,809,509 in 2017	802			802
Additional paid-in capital	277,987			274,585
Retained earnings	788,753			743,503
Accumulated other comprehensive loss	(58,101		)	(51,056		)
Treasury common stock, at cost	(451,740		)	(445,723		)
Total Mueller Industries, Inc. stockholders' equity	557,701			522,111
Noncontrolling interests	14,388			13,917
Total equity	572,089			536,028
Commitments and contingencies	—			—
Total liabilities and equity	$	1,496,384		$	1,320,173

See accompanying notes to condensed consolidated financial statements.

5

MUELLER INDUSTRIES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

	For the Six Months Ended
(In thousands)	June 30, 2018			July 1, 2017 (1)
Cash flows from operating activities
Consolidated net income	$	58,226		$	58,288
Reconciliation of consolidated net income to net cash provided by operating activities:
Depreciation and amortization	18,622			17,093
Stock-based compensation expense	3,906			3,692
Loss from unconsolidated affiliates	10,468			1,352
Gain on sale of business	—			(1,631		)
Loss on disposals of properties	2,646			81
Gain on sales of securities	—			(611		)
Impairment charge	—			411
Deferred income taxes	(1,260		)	3
Changes in assets and liabilities:
Receivables	(90,345		)	(47,108		)
Inventories	33,357			(10,874		)
Other assets	12,405			(4,723		)
Current liabilities	(11,566		)	(1,262		)
Other liabilities	(1,361		)	(1,086		)
Other, net	1,121			(1,078		)
Net cash provided by operating activities	36,219			12,547
Cash flows from investing activities
Capital expenditures	(10,882		)	(11,908		)
Acquisition of businesses, net of cash acquired	(12,467		)	(18,419		)
Proceeds from sale of business, net of cash sold	—			17,483
Investment in unconsolidated affiliates	(609		)	(1,617		)
Proceeds from sales of assets	11,376			1,363
Proceeds from sales of securities	—			1,787
Net cash used in investing activities	(12,582		)	(11,311		)
Cash flows from financing activities
Dividends paid to stockholders of Mueller Industries, Inc.	(11,360		)	(185,539		)
Dividends paid to noncontrolling interests	(592		)	(2,909		)
Repurchase of common stock	(6,575		)	—
Issuance of long-term debt	193,247			—
Repayments of long-term debt	(37,107		)	(611		)
Repayment of debt by consolidated joint ventures, net	(3,100		)	(3,320		)
Net cash received (used) to settle stock-based awards	103			(785		)
Net cash provided by (used in) financing activities	134,616			(193,164		)
Effect of exchange rate changes on cash	(368		)	3,516
Increase (decrease) in cash, cash equivalents, and restricted cash	157,885			(188,412		)
Cash, cash equivalents, and restricted cash at the beginning of the period	126,563			360,469
Cash, cash equivalents, and restricted cash at the end of the period	$	284,448		$	172,057

See accompanying notes to condensed consolidated financial statements.

⁽¹⁾ The Condensed Consolidated Statement of Cash Flows for the six months ended July 1, 2017 has been adjusted to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The Condensed Consolidated Statements of Cash Flows reflects the changes during the periods in the total of cash, cash equivalents, and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown. Refer to Note 1 for further discussion.

6

MUELLER INDUSTRIES, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

General

Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP) have been condensed or omitted.  Results of operations for the interim periods presented are not necessarily indicative of results which may be expected for any other interim period or for the year as a whole.  This Quarterly Report on Form 10-Q should be read in conjunction with the Company’s Annual Report on Form 10-K, including the annual financial statements incorporated therein.

The accompanying unaudited interim financial statements include all normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the results for the interim periods presented herein. 

Certain prior year balances have been reclassified to conform to the current year presentation. Such reclassifications primarily relate to the adoptions of Accounting Standards Update (ASU) 2017-07 and 2016-18 as further described in “Note 1 - Recent Accounting Standards.”

Note 1 – Recent Accounting Standards

Adopted

In February 2018, the Financial Accounting Standards Board (FASB) issued ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (AOCI). The ASU permits entities to reclassify tax effects stranded in AOCI as a result of tax reform to retained earnings. The guidance is effective for the Company in interim and annual periods beginning in 2019. Early adoption is permitted and can be applied retrospectively or in the period of adoption. The Company early adopted the ASU during the first quarter of 2018, which resulted in a reclassification of $556 thousand from AOCI to retained earnings during the quarter.

In March 2017, the FASB issued ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The ASU requires employers that sponsor defined benefit pension and/or other postretirement benefit plans to present the service cost component of net periodic benefit cost in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period and other components of net periodic benefits cost separately from the line item(s) that includes the service cost and outside of any subtotal of operating income. The Company adopted the ASU during the first quarter of 2018 using a retrospective approach for each period presented, and elected to use the practical expedient that allows the Company to use the amounts previously presented in its Benefit Plans disclosure as the estimation basis for applying the retrospective presentation requirements. Prior to the adoption of the ASU, net periodic benefit cost (income) was reported within selling, general, and administrative expense in the Condensed Consolidated Statements of Income. The prior periods have been revised to conform to the current period presentation, resulting in the reclassification of $111 thousand and $154 thousand of net periodic benefit income from operating income to other income, net for the quarter and six months ended July 1, 2017, respectively.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The ASU provides guidance to assist entities in evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The updated guidance requires prospective adoption. Early adoption is permitted. The Company early adopted the ASU during the first quarter of 2018 and the adoption had no impact on its Condensed Consolidated Financial Statements.

In December 2016, the FASB issued ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers. The ASU provides correction or improvement to the guidance previously issued in ASU 2014-09, Revenue from Contracts with Customers (Topic 606). Under the ASU, an entity will recognize revenue to depict the transfer of promised goods or services to customers at an amount that reflects the consideration that it expects to receive in exchange for the goods or services. It also requires more detailed disclosures to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The ASU requires revenue to be recognized over time (i.e., throughout the production process) rather than at a point in time (generally upon shipment to the customer) if performance does not create an asset with an alternative use to the entity and the entity has an enforceable right to payment for performance completed to date.  

7

The Company generates revenue through the manufacture and sale of copper tube and fittings; line sets; brass and copper alloy rod, bar, and shapes; aluminum impact extrusions; plastic fittings and valves; refrigeration valves and fittings; fabricated tubular products; and steel nipples. The Company also resells imported brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products.

Given the nature of the Company’s business and product offerings, sales transactions with customers are generally comprised of a single performance obligation that involves delivery of the products identified in the contracts with customers.  Performance obligations are generally satisfied at the point in time of shipment and payment is generally due within sixty days. Variable consideration is estimated for future rebates on certain product lines and product returns. The Company records variable consideration as an adjustment to the transaction price in the period it is incurred. Since variable consideration is settled within a short period of time, the time value of money is not significant.

The Company also evaluated specific contract terms, primarily within the Industrial Metals and Climate segments, related to the production of customized products and payment rights and determined that there are no significant changes to the timing or nature of revenue recognition under the ASU. As part of the overall evaluation of the standard, the Company has assessed and implemented necessary changes to its accounting policies, practices, and internal controls over financial reporting to support the standard.

The Company adopted the ASU during the first quarter of 2018 using the modified retrospective method for all contracts with customers. The adoption did not result in a significant impact on opening retained earnings. Revenue for prior periods have not been adjusted and continue to be reported under Revenue Recognition (Topic 605). No significant judgments were made in the application of the guidance in ASC 606 and there were no material contract assets, contract liabilities, or deferred contract costs as of June 30, 2018.

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The ASU requires entities to show the changes in the total of cash, cash equivalents, restricted cash, and restricted cash equivalents in the statement of cash flows. As a result, entities will no longer present transfers between cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. The Company adopted the ASU during the first quarter of 2018 using a retrospective approach for each period presented. Prior to the adoption of the ASU, the Company presented the change in restricted cash balances separately as a cash flow from investing activity. Upon adoption, the Company included restricted cash in each of the balances of the cash, cash equivalents, and restricted cash at the beginning and end of periods in the Condensed Consolidated Statements of Cash Flows. The prior period has been revised to conform to the current period presentation, and as a result, net cash flows for the six months ended July 1, 2017 increased by $4.5 million. A reconciliation of cash, cash equivalents, and restricted cash as of June 30, 2018 and December 30, 2017 is as follows:

(In thousands)	June 30, 2018		December 30, 2017
Cash & cash equivalents	$	281,445	$	120,269
Restricted cash included within other current assets	2,898		6,189
Restricted cash included within other assets	105		105
Total cash, cash equivalents, and restricted cash	$	284,448	$	126,563

Amounts included in restricted cash relate to required deposits in brokerage accounts that facilitate the Company’s hedging activities as well as imprest funds for the Company’s self-insured workers’ compensation program.

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. The ASU requires companies to account for the income tax effects of intercompany transfers of assets other than inventory when the transfer occurs. Companies will still be required to defer the income tax effects of intercompany inventory transactions in an exception to the income tax accounting guidance. The Company adopted the ASU during the first quarter of 2018 and the adoption had no impact on its Condensed Consolidated Financial Statements.

Issued

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842).  The ASU requires an entity to recognize a right-of-use asset and lease liability for all leases with terms of more than 12 months.  Recognition, measurement and presentation of expenses will depend on classification as a financing or operating lease.  The amendments also require certain quantitative and

8

qualitative disclosures about leasing arrangements.  The ASU will be effective for interim and annual periods beginning in 2019.  Early adoption is permitted.  Currently the guidance requires a modified retrospective adoption, but in January 2018 the FASB proposed ASU No. 2018-01, Leases (Topic 842), Land Easement Practical Expedient for Transition to Topic 842, which if approved will allow entities to elect a simplified transition approach whereby they would apply the provisions of the new guidance at the effective date without adjusting the comparative periods presented. The Company is still evaluating the effects that the provisions of the ASU will have on its Condensed Consolidated Financial Statements.

Note 2 – Earnings per Common Share

Basic per share amounts have been computed based on the average number of common shares outstanding.  Diluted per share amounts reflect the increase in average common shares outstanding that would result from the assumed exercise of outstanding stock options and vesting of restricted stock awards, computed using the treasury stock method.  Approximately six thousand and four thousand stock-based awards were excluded from the computation of diluted earnings per share for the quarters ended June 30, 2018 and July 1, 2017, respectively, because they were antidilutive.

Note 3 – Acquisitions and Dispositions

Acquisitions

Die-Mold

On March 31, 2018, the Company entered into a share purchase agreement pursuant to which the Company acquired all of the outstanding shares of Die-Mold Tool Limited (Die-Mold) for approximately $14.8 million, net of working capital adjustments. The total purchase price consisted of $12.5 million in cash at closing and a contingent consideration arrangement which requires the Company to pay the former owner up to $2.3 million based on EBITDA growth of the acquired company. Die-Mold, based out of Ontario, Canada, is a manufacturer of plastic PEX and other plumbing-related fittings and an integrated designer and manufacturer of plastic injection tooling. The business complements the Company’s existing businesses within the Piping Systems segment.

The fair value of the assets acquired totaled $5.6 million, consisting primarily of property, plant, and equipment of $2.1 million, inventories of $1.9 million, and accounts receivable of $1.6 million. The fair value of the liabilities assumed totaled $0.5 million, consisting primarily of accounts payable of $0.4 million and other current liabilities of $0.1 million. Of the remaining purchase price, $9.7 million was allocated to non-deductible goodwill and intangible assets. The purchase price allocation is provisional as of June 30, 2018 and subject to change upon completion of the final valuation of the long-lived assets, working capital, and contingent consideration during the measurement period.

Heatlink Group

On May 31, 2017, the Company entered into a share purchase agreement pursuant to which the Company acquired all of the outstanding shares of Pexcor Manufacturing Company Inc. and Heatlink Group Inc. (collectively, Heatlink Group) for approximately $17.2 million, net of working capital adjustments. The total purchase price consisted of $16.3 million in cash at closing and a contingent consideration arrangement which requires the Company to pay the former owners up to $2.2 million based on the EBITDA growth of the acquired business. Heatlink Group, based out of Calgary, Alberta, Canada, produces and sells a complete line of products for PEX plumbing and radiant systems. The business complements the Company’s existing businesses within the Piping Systems segment.

The fair value of the assets acquired totaled $9.9 million, consisting primarily of inventories of $4.6 million, accounts receivable of $2.8 million, property, plant, and equipment of $2.0 million, and other current assets of $0.5 million. The fair value of the liabilities assumed totaled $6.0 million, consisting primarily of accounts payable of $3.6 million, other current liabilities of $0.5 million, and deferred taxes of $1.9 million. Of the remaining purchase price, $13.3 million was allocated to non-deductible goodwill and intangible assets. The valuation of the business has been finalized. Changes to the purchase price allocation from the amounts presented in the Company’s 2017 Annual Report on Form 10-K included the valuation of the contingent consideration of $0.9 million and the recognition of a deferred tax liability of $1.9 million that resulted from a basis difference in the long-lived assets acquired. These changes resulted in an increase to goodwill.

9

Disposition

Mueller-Xingrong

On June 21, 2017, the Company entered into a definitive equity transfer agreement with Jiangsu Xingrong Hi-Tech Co. Ltd. and Jiangsu Baiyang Industries Co. Ltd. (Baiyang), together, the minority partners in Mueller-Xingrong (the Company’s Chinese joint venture), pursuant to which the Company sold its 50.5 percent equity interest in Mueller-Xingrong to Baiyang for approximately $18.3 million. Mueller-Xingrong manufactures engineered copper tube primarily for air-conditioning applications in China and was included in the Piping Systems segment. Mueller-Xingrong reported net sales of $67.3 million and net losses of $9 thousand in 2017. The carrying value of the assets disposed totaled $56.8 million, consisting primarily of accounts receivable, inventories, and long-lived assets. The carrying value of the liabilities disposed (consisting primarily of current debt and accounts payable), noncontrolling interest, and amounts recognized in accumulated other comprehensive income (AOCI) totaled $36.2 million. Since the disposal constituted a complete liquidation of the Company’s investment in a foreign entity, the Company removed from AOCI and recognized a cumulative translation gain of $3.8 million. As a result of the disposal, the Company recognized a net gain on the sale of this business of $1.6 million in the Condensed Consolidated Financial Statements for both the quarter and six months ended July 1, 2017.

Note 4 – Segment Information

Each of the Company’s reportable segments is composed of certain operating segments that are aggregated primarily by the nature of products offered as follows:

Piping Systems

Piping Systems is composed of the following operating segments: Domestic Piping Systems Group, Great Lakes Copper, Heatlink Group, Die-Mold, European Operations, Trading Group, and Jungwoo-Mueller (the Company’s South Korean joint venture).  The Domestic Piping Systems Group manufactures copper tube, fittings, and line sets.  These products are manufactured in the U.S., sold in the U.S., and exported to markets worldwide.   Outside the U.S., Great Lakes Copper manufactures copper tube and line sets in Canada and sells the products primarily in the U.S. and Canada, Heatlink Group produces a complete line of products for PEX plumbing and radiant systems in Canada and sells these products in Canada and the U.S., Die-Mold manufactures PEX and other plumbing-related fittings and plastic injection tooling in Canada and sells these products in Canada and the U.S., and the European Operations manufacture copper tube in the U.K. which is sold primarily in Europe.  The Trading Group manufactures pipe nipples and imports and resells brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products in the U.S. and Mexico.  Jungwoo-Mueller manufactures copper-based joining products that are sold worldwide.  The Piping Systems segment’s products are sold primarily to plumbing, refrigeration, and air-conditioning wholesalers, hardware wholesalers and co-ops, building product retailers, and air-conditioning original equipment manufacturers (OEMs).

Industrial Metals

Industrial Metals is composed of the following operating segments: Brass Rod & Copper Bar Products, Impacts & Micro Gauge, and Brass Value-Added Products.  These businesses manufacture brass rod, impact extrusions, and forgings, as well as a wide variety of end products including plumbing brass, automotive components, valves, fittings, and gas assemblies.  These products are manufactured in the U.S. and sold primarily to OEMs in the U.S., many of which are in the industrial, transportation, construction, heating, ventilation, and air-conditioning, plumbing, refrigeration, and energy markets.

Climate

Climate is composed of the following operating segments: Refrigeration Products, Fabricated Tube Products, Westermeyer, and Turbotec.  These domestic businesses manufacture and fabricate valves, assemblies, high pressure components, and coaxial heat exchangers primarily for the heating, ventilation, air-conditioning, and refrigeration markets in the U.S.

10

Summarized segment information is as follows:

	For the Quarter Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	453,183	$	175,891	$	39,172	$	(5,473	)	$	662,773
Cost of goods sold	384,821		154,401		30,688		(6,090		)	563,820
Depreciation and amortization	5,744		1,948		627		687			9,006
Selling, general, and administrative expense	20,599		3,449		2,510		11,870			38,428
(Gain) loss on sale of assets	—		—		—		(409		)	(409		)
Operating income	42,019		16,093		5,347		(11,531		)	51,928
Interest expense										(6,073		)
Other income, net										586
Income before income taxes										$	46,441

	For the Quarter Ended July 1, 2017
(In thousands)	Piping Systems			Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	422,844		$	154,504	$	36,636	$	282		$	614,266
Cost of goods sold	364,261			132,972		27,449		(371		)	524,311
Depreciation and amortization	5,591			1,904		615		485			8,595
Selling, general, and administrative expense	19,831			3,239		2,456		10,773			36,299
(Gain) loss on sale of assets	(1,631		)	—		—		—			(1,631		)
Operating income	34,792			16,389		6,116		(10,605		)	46,692
Interest expense											(6,442		)
Other income, net											342
Income before income taxes											$	40,592

11

Segment information (continued):

	For the Six Months Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	884,147	$	353,223	$	75,235	$	(9,772	)	$	1,302,833
Cost of goods sold	757,716		303,824		57,974		(10,024		)	1,109,490
Depreciation and amortization	11,622		3,851		1,248		1,741			18,462
Selling, general, and administrative expense	39,841		6,822		5,119		20,703			72,485
(Gain) loss on sale of assets	—		—		—		3,060			3,060
Operating income	74,968		38,726		10,894		(25,252		)	99,336
Interest expense										(11,982		)
Other income, net										1,146
Income before income taxes										$	88,500

	For the Six Months Ended July 1, 2017
(In thousands)	Piping Systems			Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	821,619		$	304,341	$	70,915	$	(4,689	)	$	1,192,186
Cost of goods sold	708,907			257,015		53,013		(6,197		)	1,012,738
Depreciation and amortization	10,933			3,802		1,244		971			16,950
Selling, general, and administrative expense	38,028			6,788		4,932		22,125			71,873
(Gain) loss on sale of assets	(1,631		)	—		—		—			(1,631		)
Operating income	65,382			36,736		11,726		(21,588		)	92,256
Interest expense											(8,973		)
Other income, net											936
Income before income taxes											$	84,219

12

The following tables represent a disaggregation of revenue from contracts with customers, along with the reportable segment for each category:

	For the Quarter Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	379,165	$	—	$	—	$	379,165
Brass rod and forgings	—		135,921		—		135,921
OEM components, tube & assemblies	7,448		14,597		39,172		61,217
Valves and plumbing specialties	66,570		—		—		66,570
Other	—		25,373		—		25,373
	453,183		175,891		39,172		668,246
Intersegment sales							(5,473		)
Net sales							$	662,773

	For the Quarter Ended July 1, 2017
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	318,433	$	—	$	—	$	318,433
Brass rod and forgings	—		119,783		—		119,783
OEM components, tube & assemblies	47,709		12,887		36,636		97,232
Valves and plumbing specialties	56,702		—		—		56,702
Other	—		21,834		—		21,834
	422,844		154,504		36,636		613,984
Intersegment sales							282
Net sales							$	614,266

13

Disaggregation of revenue from contracts with customers (continued):

	For the Six Months Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	737,256	$	—	$	—	$	737,256
Brass rod and forgings	—		272,469		—		272,469
OEM components, tube & assemblies	14,510		29,664		75,235		119,409
Valves and plumbing specialties	132,381		—		—		132,381
Other	—		51,090		—		51,090
	884,147		353,223		75,235		1,312,605
Intersegment sales							(9,772		)
Net sales							$	1,302,833

	For the Six Months Ended July 1, 2017
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	626,799	$	—	$	—	$	626,799
Brass rod and forgings	—		233,963		—		233,963
OEM components, tube & assemblies	79,680		26,102		70,915		176,697
Valves and plumbing specialties	115,140		—		—		115,140
Other	—		44,276		—		44,276
	821,619		304,341		70,915		1,196,875
Intersegment sales							(4,689		)
Net sales							$	1,192,186

Note 5 – Inventories

(In thousands)	June 30, 2018			December 30, 2017
Raw materials and supplies	$	75,307		$	108,397
Work-in-process	57,472			46,158
Finished goods	169,047			180,143
Valuation reserves	(7,286		)	(6,797		)
Inventories	$	294,540		$	327,901

The decrease in inventories was primarily driven by the use of excess inventory built at the end of 2017 due to a casting outage in our brass rod mill that impaired our ability to melt scrap returns.  

14

Note 6 – Financial Instruments

Derivative Instruments and Hedging Activities

The Company’s earnings and cash flows are subject to fluctuations due to changes in commodity prices, foreign currency exchange rates, and interest rates.  The Company uses derivative instruments such as commodity futures contracts, foreign currency forward contracts, and interest rate swaps to manage these exposures.

All derivatives are recognized in the Condensed Consolidated Balance Sheets at their fair value.  On the date the derivative contract is entered into, it is either a) designated as a hedge of (i) a forecasted transaction or the variability of cash flow to be paid (cash flow hedge) or (ii) the fair value of a recognized asset or liability (fair value hedge), or b) not designated in a hedge accounting relationship, even though the derivative contract was executed to mitigate an economic exposure (economic hedge), as the Company does not enter into derivative contracts for trading purposes.  Changes in the fair value of a derivative that is qualified, designated, and highly effective as a cash flow hedge are recorded in stockholders’ equity within AOCI, to the extent effective, until they are reclassified to earnings in the same period or periods during which the hedged transaction affects earnings.  Changes in the fair value of a derivative that is qualified, designated, and highly effective as a fair value hedge, along with the gain or loss on the hedged recognized asset or liability that is attributable to the hedged risk, are recorded in current earnings.  Changes in the fair value of undesignated derivatives executed as economic hedges and the ineffective portion of designated derivatives are reported in current earnings.

The Company documents all relationships between derivative instruments and hedged items, as well as the risk-management objective and strategy for undertaking various hedge transactions.  This process includes linking all derivative instruments that are designated as fair value hedges to specific assets and liabilities in the Condensed Consolidated Balance Sheets and linking cash flow hedges to specific forecasted transactions or variability of cash flow.

The Company also assesses, both at the hedge’s inception and on an ongoing basis, whether the designated derivative instruments that are used in hedging transactions are highly effective in offsetting changes in cash flows or fair values of hedged items.  When a derivative instrument is determined not to be highly effective as a hedge or the underlying hedged transaction is no longer probable of occurring, hedge accounting is discontinued prospectively in accordance with the derecognition criteria for hedge accounting.

Commodity Futures Contracts

Copper and brass represent the largest component of the Company’s variable costs of production.  The cost of these materials is subject to global market fluctuations caused by factors beyond the Company’s control.  The Company occasionally enters into forward fixed-price arrangements with certain customers; the risk of these arrangements is generally managed with commodity futures contracts.  These futures contracts have been designated as cash flow hedges.  

At June 30, 2018, the Company held open futures contracts to purchase approximately $48.2 million of copper over the next 15 months related to fixed price sales orders.  The fair value of those futures contracts was a $639 thousandnet loss position, which was determined by obtaining quoted market prices (level 1 within the fair value hierarchy).  In the next 12 months, the Company will reclassify into earnings realized gains or losses relating to cash flow hedges.  At June 30, 2018, this amount was approximately $215 thousand of deferred net losses, net of tax.

The Company may also enter into futures contracts to protect the value of inventory against market fluctuations.  At June 30, 2018, the Company held open futures contracts to sell approximately $0.2 million of copper over the next three months related to copper inventory.  The fair value of those futures contracts was an $8 thousandnet gain position, which was determined by obtaining quoted market prices (level 1 within the fair value hierarchy).

15

The Company presents its derivative assets and liabilities in the Condensed Consolidated Balance Sheets on a net basis by counterparty.  The following table summarizes the location and fair value of the derivative instruments and disaggregates the net derivative assets and liabilities into gross components on a contract-by-contract basis:

	Asset Derivatives						Liability Derivatives
		Fair Value						Fair Value
(In thousands)	Balance Sheet Location	June 30, 2018		December 30, 2017			Balance Sheet Location	June 30, 2018			December 30, 2017
Commodity contracts - gains	Other current assets	$	8	$	1,014		Other current liabilities	$	148		$	55
Commodity contracts - losses	Other current assets	—		(5		)	Other current liabilities	(787		)	(3,210		)
Total derivatives (1)		$	8	$	1,009			$	(639	)	$	(3,155	)

⁽¹⁾Does not include the impact of cash collateral provided to counterparties.

The following tables summarize the effects of derivative instruments on the Company’s Condensed Consolidated Statements of Income:

		For the Quarter Ended				For the Six Months Ended
(In thousands)	Location	June 30, 2018		July 1, 2017		June 30, 2018			July 1, 2017
Fair value hedges:
Gain on commodity contracts (qualifying)	Cost of goods sold	$	—	$	—	$	391		$	—
Loss on hedged item - inventory	Cost of goods sold	—		—		(385		)	—
Undesignated derivatives:
Gain (loss) on commodity contracts (nonqualifying)	Cost of goods sold	2,301		672		8,427			(423		)

16

The following tables summarize amounts recognized in and reclassified from AOCI during the period:

	For the Quarter Ended June 30, 2018
(In thousands)	Gain (Loss) Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Loss Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	52		Cost of goods sold	$	17
Other	(34		)	Other	—
Total	$	18		Total	$	17

	For the Quarter Ended July 1, 2017
(In thousands)	(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Loss Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	(250	)	Cost of goods sold	$	324
Interest rate swap	—			Interest expense	149
Other	38			Other	—
Total	$	(212	)	Total	$	473

	For the Six Months Ended June 30, 2018
(In thousands)	Loss Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Gain Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	(743	)	Cost of goods sold	$	(275	)
Other	(9		)	Other	—
Total	$	(752	)	Total	$	(275	)

	For the Six Months Ended July 1, 2017
(In thousands)	(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Loss Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	(813	)	Cost of goods sold	$	676
Interest rate swap	—			Interest expense	298
Other	156			Other	—
Total	$	(657	)	Total	$	974

17

The Company enters into futures and forward contracts that closely match the terms of the underlying transactions.  As a result, the ineffective portion of the qualifying open hedge contracts through June 30, 2018 was not material to the Condensed Consolidated Statements of Income.

The Company primarily enters into International Swaps and Derivatives Association master netting agreements with major financial institutions that permit the net settlement of amounts owed under their respective derivative contracts.  Under these master netting agreements, net settlement generally permits the Company or the counterparty to determine the net amount payable for contracts due on the same date and in the same currency for similar types of derivative transactions.  The master netting agreements generally also provide for net settlement of all outstanding contracts with a counterparty in the case of an event of default or a termination event.  The Company does not offset fair value amounts for derivative instruments and fair value amounts recognized for the right to reclaim cash collateral.  At June 30, 2018 and December 30, 2017, the Company had recorded restricted cash in other current assets of $2.1 million and $5.3 million, respectively, as collateral related to open derivative contracts under the master netting arrangements.

Long-Term Debt

The fair value of long-term debt at June 30, 2018 approximates the carrying value on that date.  The estimated fair values were determined based on quoted market prices and the current rates offered for debt with similar terms and maturities.  The fair value of long-term debt is classified as level 2 within the fair value hierarchy.  This classification is defined as a fair value determined using market-based inputs other than quoted prices that are observable for the liability, either directly or indirectly.  

Note 7 – Investment in Unconsolidated Affiliates

Tecumseh

The Company owns a 50 percent interest in an unconsolidated affiliate that acquired Tecumseh Products Company LLC (Tecumseh).  The Company also owns a 50 percent interest in a second unconsolidated affiliate that provides financing to Tecumseh.  These investments are recorded using the equity method of accounting, as the Company can exercise significant influence but does not own a majority equity interest or otherwise control the respective entities.  Under the equity method of accounting, these investments are stated at initial cost and are adjusted for subsequent additional investments and the Company’s proportionate share of earnings or losses and distributions.

The Company records its proportionate share of the investees’ income or loss, net of foreign taxes, one quarter in arrears as income (loss) from unconsolidated affiliates, net of foreign tax, in the Condensed Consolidated Statements of Income and its proportionate share of the investees’ other comprehensive income (loss), net of income taxes, in the Condensed Consolidated Statements of Comprehensive Income. The U.S. tax effect of the Company’s proportionate share of Tecumseh’s income or loss is recorded in income tax expense in the Condensed Consolidated Statements of Income. In general, the equity investment in unconsolidated affiliates is equal to the current equity investment plus the investees’ undistributed earnings. 

The following tables present summarized financial information derived from the Company’s equity method investees’ combined consolidated financial statements, which are prepared in accordance with U.S. GAAP.

(In thousands)	June 30, 2018		December 30, 2017
Current assets	$	236,856	$	246,127
Noncurrent assets	127,783		139,200
Current liabilities	172,658		174,710
Noncurrent liabilities	58,214		58,334

18

	For the Quarter Ended					For the Six Months Ended
(In thousands)	June 30, 2018		July 1, 2017			June 30, 2018			July 1, 2017
Net sales	$	126,205	$	132,600		$	250,305		$	258,900
Gross profit	11,749		19,600			23,849			35,200
Net income (loss)	471		(217		)	(17,860		)	(2,704		)

The Company’s loss from unconsolidated affiliates, net of foreign tax, for the quarter ended June 30, 2018 included net losses of $6.7 million, offset by a gain of $7.0 million related to a settlement with the Brazilian Federal Revenue Agency for Tecumseh.

The Company’s loss from unconsolidated affiliates, net of foreign tax, for the six months ended June 30, 2018 included net losses of $12.9 million and charges of $3.0 million related to certain labor claim contingencies, offset by a gain of $7.0 million related to a settlement with the Brazilian Federal Revenue Agency for Tecumseh.

Bahrain

On December 30, 2015, the Company entered into a joint venture agreement with Cayan Ventures and Bahrain Mumtalakat Holding Company to build a copper tube mill in Bahrain. The business will operate and brand its products under the Mueller Industries family of brands. The Company has invested approximately $4.5 million of cash to date and will be the technical and marketing lead in return for 40 percent ownership in the joint venture.

The Company’s loss from unconsolidated affiliates, net of foreign tax, for the quarter and six months ended June 30, 2018 included net losses of $0.5 million and $1.6 million, respectively, for Bahrain.

Note 8 – Benefit Plans

The Company sponsors several qualified and nonqualified pension plans and other postretirement benefit plans for certain of its employees.  The components of net periodic benefit cost (income) are as follows:

	For the Quarter Ended						For the Six Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Pension benefits:
Service cost	$	20		$	36		$	44		$	71
Interest cost	1,465			1,653			2,958			3,318
Expected return on plan assets	(2,290		)	(2,186		)	(4,579		)	(4,368		)
Amortization of net loss	235			516			584			1,072
Net periodic benefit (income) cost	$	(570	)	$	19		$	(993	)	$	93
Other benefits:
Service cost	$	56		$	53		$	116		$	109
Interest cost	146			146			294			295
Amortization of prior service credit	(225		)	(226		)	(451		)	(451		)
Amortization of net loss (gain)	11			(15		)	29			(20		)
Net periodic benefit income	$	(12	)	$	(42	)	$	(12	)	$	(67	)

The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income.

19

Note 9 – Commitments and Contingencies

The Company is involved in certain litigation as a result of claims that arose in the ordinary course of business, which management believes will not have a material adverse effect on the Company’s financial position, results of operations, or cash flows.  The Company may also realize the benefit of certain legal claims and litigation in the future; these gain contingencies are not recognized in the Condensed Consolidated Financial Statements.

Environmental

Non-operating Properties

Southeast Kansas Sites

The Kansas Department of Health and Environment (KDHE) has contacted the Company regarding environmental contamination at three former smelter sites in Kansas (Altoona, East La Harpe, and Lanyon).  The Company is not a successor to the companies that operated these smelter sites, but is exploring possible settlement with KDHE and other potentially responsible parties (PRP) in order to avoid litigation.  Another PRP conducted a site investigation of the Altoona site under a consent decree with KDHE and submitted a removal site evaluation report recommending a remedy.  The remedial design plan, which covers both on-site and certain off-site cleanup costs, was approved by the KDHE in 2016.  At the East La Harpe site, the Company and two other PRPs conducted a site study evaluation under KDHE supervision and prepared a site cleanup plan approved by KDHE.  In 2016, the corporate parent of a third party that the Company understands may owe indemnification obligations to one of the other PRPs in connection with the East La Harpe site filed for protection under Chapter 11 of the U.S. Bankruptcy Code.  KDHE has extended the deadline for the PRPs to develop a repository design plan to allow for wetlands permitting to take place.  With respect to the Lanyon Site, in 2016, the Company received a general notice letter from the United States Environmental Protection Agency (EPA) asserting that the Company is a PRP, which the Company has denied.  The Company’s reserve for its proportionate share of the remediation costs associated with the Southeast Kansas sites is $5.6 million.

Shasta Area Mine Sites

Mining Remedial Recovery Company (MRRC), a wholly owned subsidiary, owns certain inactive mines in Shasta County, California.  MRRC has continued a program, begun in the late 1980s, of implementing various remedial measures, including sealing mine portals with concrete plugs in portals that were discharging water.  The sealing program achieved significant reductions in the metal load in discharges from these adits; however, additional reductions are required pursuant to an order issued by the California Regional Water Quality Control Board (QCB).  In response to a 1996 QCB Order, MRRC completed a feasibility study in 1997 describing measures designed to mitigate the effects of acid rock drainage.  In December 1998, the QCB modified the 1996 order extending MRRC’s time to comply with water quality standards.  In September 2002, the QCB adopted a new order requiring MRRC to adopt Best Management Practices (BMP) to control discharges of acid mine drainage, and again extended the time to comply with water quality standards until September 2007.  During that time, implementation of BMP further reduced impacts of acid rock drainage; however, full compliance has not been achieved.  The QCB is presently renewing MRRC’s discharge permit and will concurrently issue a new order.  It is expected that the new 10-year permit will include an order requiring continued implementation of BMP through 2025 to address residual discharges of acid rock drainage.  The Company currently estimates that it will spend between approximately $12.8 million and $17.6 million for remediation at these sites over the next 30 years.

Lead Refinery Site

U.S.S. Lead Refinery, Inc. (Lead Refinery), a non-operating wholly owned subsidiary of MRRC, has conducted corrective action and interim remedial activities (collectively, Site Activities) at Lead Refinery’s East Chicago, Indiana site pursuant to the Resource Conservation and Recovery Act since December 1996.  Although the Site Activities have been substantially concluded, Lead Refinery is required to perform monitoring and maintenance-related activities pursuant to a post-closure permit issued by the Indiana Department of Environmental Management effective as of March 2, 2013.  Approximate costs to comply with the post-closure permit, including associated general and administrative costs, are estimated at between $1.8 million and $3.0 million over the next 19 years.

On April 9, 2009, pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the U.S. Environmental Protection Agency (EPA) added the Lead Refinery site and surrounding properties to the National Priorities List (NPL).  On July 17, 2009, Lead Refinery received a written notice from the EPA indicating that it may be a PRP under CERCLA due to the release or threat of release of hazardous substances including lead into properties surrounding the Lead Refinery NPL site.  The EPA identified two other PRPs in connection with that matter.  In November 2012, the EPA adopted a remedy for the surrounding properties and in September 2014, the EPA announced that it had entered into a settlement with the two other PRPs

20

whereby they will pay approximately $26.0 million to fund the cleanup of approximately 300 properties surrounding the Lead Refinery NPL site (zones 1 and 3 of operable unit 1) and perform certain remedial action tasks.

On November 8, 2016, the Company, its subsidiary Arava Natural Resources Company, Inc. (Arava), and Arava’s subsidiary MRRC each received general notice letters from the EPA asserting that they may be PRPs in connection with the Lead Refinery NPL site.  The Company, Arava, and MRRC have denied liability for any remedial action and response costs associated with the Lead Refinery NPL site.  In June 2017, the EPA requested that Lead Refinery conduct, and the Company fund, a remedial investigation and feasibility study of operable unit 2 of the Lead Refinery NPL site pursuant to a proposed administrative settlement agreement and order on consent. The Company and Lead Refinery entered into that agreement in September 2017. The Company has made a capital contribution to Lead Refinery to conduct the remedial investigation and feasibility study with respect to operable unit 2 and has provided financial assurance in the amount of $1.0 million. The EPA has also asserted its position that Mueller is a responsible party for the Lead Refinery NPL site, and accordingly is responsible for a share of remedial action and response costs at the site and in the adjacent residential area.

In January 2018, the EPA issued two unilateral administrative orders (UAOs) directing the Company, Lead Refinery, and four other PRPs to conduct soil and interior remediation of certain residences at the Lead Refinery NPL site (zones 2 and 3 of operable unit 1). The Company and Lead Refinery have reached agreement with the four other PRPs to implement these two UAOs, with the Company agreeing to pay, on an interim basis, (i) an estimated $4.5 million (subject to potential change through a future reallocation process) of the approximately $25.0 million the PRPs currently estimate it will cost to implement the UAOs, which estimate is subject to change, and (ii) $2.0 million relating to past costs incurred by other PRPs for work conducted at the site.  These amounts are included in the Company’s reserve for environmental liabilities as of December 30, 2017. The Company disputes that it was properly named in the UAOs, and has reserved its rights to petition the EPA for reimbursement of any costs incurred to comply with the UAOs upon the completion of the work required therein.  In October 2017, a group of private plaintiffs sued the Company, Arava, MRRC, and Lead Refinery, along with other defendants, in a private tort action relating to the site; the Company, Arava, and MRRC were voluntarily dismissed from that litigation without prejudice in March 2018.  At this juncture, the Company is unable to determine the likelihood of a material adverse outcome or the amount or range of a potential loss in excess of the current reserve with respect to any remedial action or litigation relating to the Lead Refinery NPL site, either at Lead Refinery’s former operating site (operable unit 2) or the adjacent residential area (operable unit 1).

Bonita Peak Mining District

Following an August 2015 spill from the Gold King Mine into the Animas River near Silverton, Colorado, the EPA listed the Bonita Peak Mining District on the NPL.  Said listing was finalized in September 2016.  The Bonita Peak Mining District encompasses 48 mining sites within the Animas River watershed, including the Sunnyside Mine, the American Tunnel, and the Sunbank Group.  On or about July 25, 2017, Washington Mining Company (Washington Mining) (a wholly-owned subsidiary of the Company’s wholly-owned subsidiary, Arava), received a general notice letter from the EPA stating that Washington Mining may be a PRP under CERCLA in connection with the Bonita Peak Mining District site and therefore responsible for the remediation of certain portions of the site, along with related costs incurred by the EPA.  Shortly thereafter, the Company received a substantively identical letter asserting that it may be a PRP at the Site and similarly responsible for the cleanup of certain portions of the site.  The general notice letters identify one other PRP at the site, and do not require specific action by Washington Mining or the Company at this time.  At this juncture, the Company is unable to determine the likelihood of a materially adverse outcome or the amount or range of a potential loss with respect to any remedial action related to the Bonita Peak Mining District NPL site.

Operating Properties

Mueller Copper Tube Products, Inc.

In 1999, Mueller Copper Tube Products, Inc. (MCTP), a wholly owned subsidiary, commenced a cleanup and remediation of soil and groundwater at its Wynne, Arkansas plant to remove trichloroethylene, a cleaning solvent formerly used by MCTP.  On August 30, 2000, MCTP received approval of its Final Comprehensive Investigation Report and Storm Water Drainage Investigation Report addressing the treatment of soils and groundwater from the Arkansas Department of Environmental Quality (ADEQ).  The Company established a reserve for this project in connection with the acquisition of MCTP in 1998.  Effective November 17, 2008, MCTP entered into a Settlement Agreement and Administrative Order by Consent to submit a Supplemental Investigation Work Plan (SIWP) and subsequent Final Remediation Work Plan (RWP) for the site.  By letter dated January 20, 2010, ADEQ approved the SIWP as submitted, with changes acceptable to the Company.  On December 16, 2011, MCTP entered into an amended Administrative Order by Consent to prepare and implement a revised RWP regarding final remediation for the Site.  The remediation system was activated in February 2014.  Costs to implement the work plans, including associated general and administrative costs, are estimated to approximate $0.8 million to $1.2 million over the next eight years.

21

United States Department of Commerce Antidumping Review

On December 24, 2008, the Department of Commerce (DOC) initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico for the November 1, 2007  through October 31, 2008 period of review.  The DOC selected Mueller Comercial as a respondent in the review.  On April 19, 2010, the DOC published the final results of the review and assigned Mueller Comercial an antidumping duty rate of 48.33 percent.  On May 25, 2010, the Company appealed the final results to the U.S. Court of International Trade (CIT).  On December 16, 2011, the CIT issued a decision remanding the Department’s final results.  While the matter was still pending, the Company and the United States reached an agreement to settle the appeal.  Subject to the conditions of the agreement, the Company anticipated that certain of its subsidiaries would incur antidumping duties on subject imports made during the period of review and, as such, established a reserve for this matter.  After the lapse of the statutory period of time during which U.S. Customs and Border Protection (CBP) was required, but failed, to liquidate the entries at the settled rate, the Company released the reserve.  Between October 30, 2015 and November 27, 2015, CBP sent a series of invoices to Southland Pipe Nipples Co., Inc. (Southland), requesting payment of approximately $3.0 million in duties and interest in connection with 795 import entries made during the November 1, 2007 through October 31, 2008 period.  On January 26, 2016 and January 27, 2016, Southland filed protests with CBP in connection with these invoices, noting that CBP’s asserted claims were not made in accordance with applicable law, including statutory provisions governing deemed liquidation. The Company believes in the merits of the legal objections raised in Southland’s protests, and CBP’s response to Southland’s protests is currently pending. Given the procedural posture and issues raised by this legal dispute, the Company cannot estimate the amount of potential duty liability, if any, that may result from CBP’s asserted claims.

Equal Employment Opportunity Commission Matter

On October 5, 2016, the Company received a demand letter from the Los Angeles District Office of the United States Equal Employment Opportunity Commission (EEOC).  The EEOC alleged that between May 2011 and April 2015, various Company employees were terminated in violation of the Americans with Disabilities Act (ADA), and that certain of the Company’s employee leave and attendance policies were discriminatory in nature.  Thereafter, the Company, in consultation with its liability insurers, entered into conciliation and mediation efforts with the EEOC for purposes of resolving the claims. At the conclusion of those efforts, the Company and the EEOC reached agreement on a consensual resolution of the EEOC’s claims, which includes both monetary and equitable relief.

On June 28, 2018, the EEOC filed a complaint against the Company on behalf of a group of unidentified claimants in the United States District Court for the Central District of California alleging that the Company engaged in unlawful employment practices in violation of the ADA. On July 13, 2018, the District Court approved a Consent Decree between the Company and the EEOC to resolve the EEOC’s claims. The Consent Decree, the term of which shall be two and a half years, provides that the Company shall pay up to $1.0 million in monetary relief to fund individual claims for discrimination under the ADA as approved by the EEOC. That amount is fully within the limits of the Company’s applicable insurance coverage. Pursuant to the Consent Decree, the Company shall also take a series of proactive measures to cultivate a work environment free from unlawful discrimination. Those measures include, among others, assistance with the identification of potential claimants, employee, supervisory and managerial training regarding employee rights under the ADA, revised practices and procedures concerning reasonable workplace accommodations as required by the ADA, and related reporting and recordkeeping.

Guarantees

Guarantees, in the form of letters of credit, are issued by the Company generally to assure the payment of insurance deductibles and certain retiree health benefits.  The terms of the guarantees are generally one year but are renewable annually as required.  These letters are primarily backed by the Company’s revolving credit facility.  The maximum payments that the Company could be required to make under its guarantees at June 30, 2018 were $8.7 million.

Note 10 – Income Taxes

The Company’s effective tax rate for the second quarter of 2018 was 27 percent compared with 31 percent for the same period last year.  The items impacting the effective tax rate for the second quarter of 2018 were primarily attributable to the provision for state income taxes, net of the federal benefit, of $1.4 million and miscellaneous items totaling $1.3 million.

The Company’s effective tax rate for the second quarter of 2017 was 31 percent.  The items impacting the effective tax rate for the second quarter of 2017 were primarily attributable to reductions for the U.S. production activities deduction of $0.9 million and the effect of foreign tax rates lower than statutory tax rates of $1.6 million. These items were partially offset by the provision for state income taxes, net of the federal benefit, of $0.8 million and miscellaneous items totaling $0.2 million.

22

The Company’s effective tax rate for the first half of 2018 was 22 percent compared with 29 percent for the same period last year. The difference between the Company’s effective tax rate and the current U.S. statutory rate of 21 percent is primarily related to the reduction for the impact of investments in unconsolidated affiliates of $3.7 million. This was offset by the provision for state income taxes, net of the federal benefit, of $2.6 million, the inclusion for global intangible low-taxed income of $1.0 million, and miscellaneous items totaling $1.2 million.

The Company records the U.S. tax effects of its investment in Tecumseh, an unconsolidated affiliate, in income tax expense in the Condensed Consolidated Statements of Income.

The Company’s effective tax rate for the first half of 2017 was 29 percent as compared with the U.S. statutory rate of 35 percent. The items impacting the effective tax rate for the first half of 2017 were primarily attributable to reductions for the U.S. production activities deduction of $1.8 million, the effect of foreign tax rates lower than statutory tax rates of $3.0 million, the tax benefit of equity compensation deductions of $1.7 million, and the impact of investments in unconsolidated affiliates of $0.8 million. These items were partially offset by the provision for state income taxes, net of the federal benefit, of $1.7 million and miscellaneous items totaling $0.7 million.

The Tax Cuts and Jobs Act (the Act) was enacted on December 22, 2017. The Act reduces the U.S. federal corporate income tax rate from 35 percent to 21 percent, requires companies to pay a one-time transition tax on the accumulated earnings of certain foreign subsidiaries, and creates new taxes on certain foreign-sourced earnings. The Company is applying the guidance in SAB 118 in accounting for the enactment date effects of the Act. At December 30, 2017, the Company made a reasonable estimate of the one-time transition tax on accumulated foreign earnings as well as the impact of the Act on its existing deferred tax balances. As discussed below, the Company has not completed its accounting for the tax effects of the Act as of June 30, 2018.

The one-time transition tax is based on the Company’s total post-1986 earnings and profits (E&P) for which the accrual of U.S. income taxes had previously been deferred. The Company recorded a provisional amount for its one-time transition tax liability of $12.9 million at December 30, 2017, and has not adjusted this amount as of June 30, 2018. The Company has not yet completed its calculation of the total post-1986 foreign E&P for these foreign subsidiaries. Further, the transition tax is impacted in part by the amount of those earnings held in cash and other specified assets. Accordingly, the Company’s estimate of the one-time transition tax may change when it finalizes the calculation of post-1986 foreign E&P previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets.

At December 30, 2017, the Company remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21 percent. A provisional tax benefit of $12.1 million was recorded, and no adjustment was recorded to this estimate in the current quarter. The Company is still analyzing certain aspects of the Act and refining its calculations, which could potentially affect the measurement of these balances.

The global intangible low-taxed income (GILTI) provisions of the Act impose a tax on the GILTI earned by certain foreign subsidiaries. The FASB Staff Q&A, Topic 740, No. 5, Accounting for Global Intangible Low-Taxed Income, states that an entity can make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or provide for the tax expense related to GILTI in the year the tax is incurred. Given the complexity of the GILTI provisions, the Company is still evaluating the effects of these provisions and has not yet determined the new accounting policy. At June 30, 2018, because the Company is still assessing the GILTI provisions and future income subject to the GILTI provisions, it has included an estimate of the tax on GILTI related to current-year operations in the forecasted effective tax rate and has not provided additional GILTI on deferred items.

The Company files a consolidated U.S. federal income tax return and numerous consolidated and separate-company income tax returns in many state, local, and foreign jurisdictions.  The statute of limitations is open for the Company’s federal tax return and most state income tax returns for 2014 and all subsequent years and is open for certain state and foreign returns for earlier tax years due to ongoing audits and differing statute periods.  While the Company believes that it is adequately reserved for possible future audit adjustments, the final resolution of these examinations cannot be determined with certainty and could result in final settlements that differ from current estimates.

Note 11 – Accumulated Other Comprehensive Income (Loss)

AOCI includes certain foreign currency translation adjustments from those subsidiaries not using the U.S. dollar as their functional currency, net deferred gains and losses on certain derivative instruments accounted for as cash flow hedges, adjustments to pension and OPEB liabilities, unrealized gains and losses on marketable securities classified as available-for-sale, and other comprehensive income attributable to unconsolidated affiliates.

23

The following table provides changes in AOCI by component, net of taxes and noncontrolling interests (amounts in parentheses indicate debits to AOCI):

	For the Six Months Ended June 30, 2018
(In thousands)	Cumulative Translation Adjustment			Unrealized Gain (Loss) on Derivatives			Pension/OPEB Liability Adjustment			Unrealized Gain on Equity Securities		Attributable to Unconsol. Affiliates			Total
Balance as of December 30, 2017	$	(38,163	)	$	847		$	(20,610	)	$	—	$	6,870		$	(51,056	)
Other comprehensive (loss) income before reclassifications	(6,793		)	(752		)	353			—		(280		)	(7,472		)
Amounts reclassified from AOCI	—			(275		)	146			—		—			(129		)
Net current-period other comprehensive (loss) income	(6,793		)	(1,027		)	499			—		(280		)	(7,601		)
Reclassification of stranded effects of the Act	—			112			(1,018		)	—		1,462			556
Balance as of June 30, 2018	$	(44,956	)	$	(68	)	$	(21,129	)	$	—	$	8,052		$	(58,101	)

	For the Six Months Ended July 1, 2017
(In thousands)	Cumulative Translation Adjustment			Unrealized (Loss) Gain on Derivatives			Pension/OPEB Liability Adjustment			Unrealized Gain (Loss) on Equity Securities			Attributable to Unconsol. Affiliates			Total
Balance as of December 31, 2016	$	(49,965	)	$	(300	)	$	(23,046	)	$	380		$	5,975		$	(66,956	)
Other comprehensive income (loss) before reclassifications	11,058			(657		)	(856		)	(1		)	(351		)	9,193
Amounts reclassified from AOCI	(3,777		)	974			491			(379		)	—			(2,691		)
Net current-period other comprehensive income (loss)	7,281			317			(365		)	(380		)	(351		)	6,502
Balance as of July 1, 2017	$	(42,684	)	$	17		$	(23,411	)	$	—		$	5,624		$	(60,454	)

24

Reclassification adjustments out of AOCI were as follows:

	Amount reclassified from AOCI
	For the Quarter Ended						For the Six Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017			Affected line item
Unrealized losses (gains) on derivatives:
Commodity contracts	$	19		$	602		$	(346	)	$	1,024		Cost of goods sold
Interest rate swap	—			232			—			464			Interest expense
	(2		)	(361		)	71			(514		)	Income tax (benefit) expense
	$	17		$	473		$	(275	)	$	974		Net of tax and noncontrolling interests
Amortization of net loss and prior service cost on employee benefit plans	$	21		$	275		$	162		$	601		Other income, net
	6			(46		)	(16		)	(110		)	Income tax expense (benefit)
	$	27		$	229		$	146		$	491		Net of tax and noncontrolling interests
Sale of available-for-sale securities	$	—		$	(357	)	$	—		$	(611	)	Other income, net
	$	—		$	138		$	—		$	232		Income tax expense
	$	—		$	(219	)	$	—		$	(379	)	Net of tax and noncontrolling interests
Gain recognized upon sale of business	$	—		$	(3,777	)	$	—		$	(3,777	)	Selling, general, and administrative expense
	$	—		$	—		$	—		$	—		Income tax expense
	$	—		$	(3,777	)	$	—		$	(3,777	)	Net of tax and noncontrolling interests

Note 12 – Noncontrolling Interests

(In thousands)	Noncontrolling Interests
Balance as of December 30, 2017	$	13,917
Dividends paid to noncontrolling interests	(592		)
Net income attributable to noncontrolling interests	916
Other comprehensive income attributable to noncontrolling interests, net of tax:
Foreign currency translation	147
Balance as of June 30, 2018	$	14,388

25

Note 13 – Subsequent Events

On July 2, 2018, the Company entered into a stock purchase agreement pursuant to which the Company acquired all of the outstanding capital stock of ATCO Rubber Products, Inc. (ATCO) for approximately $157.7 million in cash, net of working capital adjustments. The transaction also included a contingent consideration arrangement which requires the Company to pay the former owner up to $12.0 million based on EBITDA growth of the acquired company. ATCO is an industry leader in the manufacturing and distribution of insulated HVAC flexible duct systems and will support the Company’s strategy to grow its Climate Products businesses to become a more valuable resource to its HVAC customers. The acquired business will be reported in the Company’s Climate segment.

The historical carrying value of the assets acquired totaled $107.2 million, consisting primarily of property, plant, and equipment of $52.1 million, inventories of $32.4 million, accounts receivable of $21.9 million, other current assets of $0.6 million, and other assets of $0.2 million. The historical carrying value of the liabilities assumed totaled $18.1 million, consisting primarily of accounts payable of $8.1 million, other current liabilities of $7.4 million, and other liabilities of $2.6 million. The Company will adjust these assets and liabilities to their fair value as of the closing date in accordance with Accounting Standards Codification 805, Business Combinations.

ATCO had revenues of approximately $166.0 million in its fiscal year ending December 31, 2017.

The Company’s Credit Agreement provides for an unsecured $350.0 million revolving credit facility which matures on December 6, 2021. Total borrowings under the Credit Agreement were $315.0 million as of June 30, 2018, which included $150.0 million borrowed on June 29, 2018 to fund the ATCO acquisition. On July 6, 2018 and July 16, 2018, the Company made payments of $50.0 million and $25.0 million, respectively, to reduce the debt outstanding under its Credit Agreement.

Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations

General Overview

We are a leading manufacturer of copper, brass, aluminum, and plastic products.  The range of these products is broad:  copper tube and fittings; line sets; brass and copper alloy rod, bar, and shapes; aluminum and brass forgings; aluminum impact extrusions; PEX plastic tube, refrigeration valves and fittings; fabricated tubular products; and steel nipples.  We also resell brass and plastic plumbing valves, plastic fittings, malleable iron fittings, faucets, and plumbing specialty products.  Mueller’s operations are located throughout the United States and in Canada, Mexico, Great Britain, South Korea, and China.

Each of our reportable segments is composed of certain operating segments that are aggregated primarily by the nature of products offered as follows:

• Piping Systems:  The Piping Systems segment is composed of Domestic Piping Systems Group, Great Lakes Copper, Heatlink Group, Die-Mold, European Operations, Trading Group, and Jungwoo-Mueller (our South Korean joint venture).  The Domestic Piping Systems Group manufactures copper tube, fittings, and line sets.  These products are manufactured in the U.S., sold in the U.S., and exported to markets worldwide. Great Lakes Copper manufactures copper tube and line sets in Canada and sells the products primarily in the U.S. and Canada.  Heatlink Group manufactures a complete line of products for PEX plumbing and radiant systems in Canada and sells these products in Canada and the U.S. Die-Mold manufactures PEX and other plumbing-related fittings and plastic injection tooling in Canada and sells these products in Canada and the U.S. European Operations manufacture copper tube in the United Kingdom, which is sold throughout Europe.  The Trading Group manufactures pipe nipples and sources products for import distribution in North America.  Jungwoo-Mueller manufactures copper-based joining products that are sold worldwide.  The Piping Systems segment sells products to wholesalers in the plumbing and refrigeration markets, distributors to the manufactured housing and recreational vehicle industries, building material retailers, and air-conditioning original equipment manufacturers (OEMs).

The Company disposed of Mueller-Xingrong (the Company’s Chinese joint venture) on June 21, 2017. This business manufactured engineered copper tube primarily for air-conditioning applications in China.

• Industrial Metals:  The Industrial Metals segment is composed of Brass Rod & Copper Bar Products, Impacts & Micro Gauge, and Brass Value-Added Products.  The segment manufactures and sells brass and copper alloy rod, bar, and shapes; aluminum and brass forgings; aluminum impact extrusions; and gas valves and assemblies.   The segment manufactures and sells its products primarily to domestic OEMs in the industrial, transportation, construction, heating, ventilation, and air-conditioning, plumbing, refrigeration, and energy markets.

26

• Climate: The Climate segment is composed of Refrigeration Products, Fabricated Tube Products, Westermeyer, and Turbotec.  The segment manufactures and sells refrigeration valves and fittings, fabricated tubular products, high pressure components, and coaxial heat exchangers.  The segment sells its products primarily to the heating, ventilation, air-conditioning, and refrigeration markets in the U.S.

New housing starts and commercial construction are important determinants of our sales to the heating, ventilation, and air-conditioning, refrigeration, and plumbing markets because the principal end use of a significant portion of our products is in the construction of single and multi-family housing and commercial buildings.  Repairs and remodeling projects are also important drivers of underlying demand for these products.

Residential construction activity has shown improvement in recent years, but remains at levels below long-term historical averages.  Per the U.S. Census Bureau, the June 2018 seasonally adjusted annual rate of new housing starts was 1.2 million, which was consistent with the June 2017 rate.  Mortgage rates remain at historically low levels, as the average 30-year fixed mortgage rate was 4.40 percent for the first half of 2018 and 3.99 percent for the twelve months ended December 2017.  The private non-residential construction sector, which includes offices, industrial, health care, and retail projects, has shown improvement in recent years.  Per the U.S. Census Bureau, the seasonally adjusted annual value of private nonresidential construction put in place was $451.5 billion in May 2018 compared to the May 2017 rate of $443.6 billion.  We expect that most of these conditions will continue to improve.

Profitability of certain of our product lines depends upon the “spreads” between the costs of raw materials and the selling prices of our products.  The open market prices for copper cathode and copper and brass scrap, for example, influence the selling price of copper tube and brass rod, two principal products manufactured by the Company.  We attempt to minimize the effects on profitability from fluctuations in material costs by passing through these costs to our customers.  Our earnings and cash flow are dependent upon these spreads that fluctuate based upon market conditions.

Earnings and profitability are also impacted by unit volumes that are subject to market trends, such as substitute products, imports, technologies, and market share.  In core product lines, we intensively manage our pricing structure while attempting to maximize profitability.  From time-to-time, this practice results in lost sales opportunities and lower volume.  For plumbing systems, plastics are the primary substitute product; these products represent an increasing share of consumption.  U.S. consumption of copper tube is still predominantly supplied by U.S. manufacturers.  For certain air-conditioning and refrigeration applications, aluminum-based systems are the primary substitution threat.  We cannot predict the acceptance or the rate of switching that may occur.  In recent years, brass rod consumption in the U.S. has declined due to the outsourcing of many manufactured products from offshore regions.

Results of Operations

Consolidated Results

The following table compares summary operating results for the first half of 2018 and 2017:

	For the Quarter Ended				Percent Change		For the Six Months Ended				Percent Change
(In thousands)	June 30, 2018		July 1, 2017		2018 vs. 2017		June 30, 2018		July 1, 2017		2018 vs. 2017
Net sales	$	662,773	$	614,266	7.9	%	$	1,302,833	$	1,192,186	9.3	%
Operating income	51,928		46,692		11.2		99,336		92,256		7.7
Net income	33,182		27,633		20.1		57,310		57,620		(0.5	)

27

The following are components of changes in net sales compared to the prior year:

	Quarter-to- Date		Year-to- Date
Net selling price in core product lines	9.0	%	9.8	%
Unit sales volume in core product lines	2.6		2.3
Acquisitions	1.0		1.0
Dispositions	(6.7	)	(5.6	)
Other	2.0		1.8
	7.9	%	9.3	%

The increase in net sales during the second quarter of 2018 was primarily due to (i) higher net selling prices of $55.3 million in our core product lines, primarily copper tube and brass rod, (ii) higher unit sales volume of $31.9 million in our domestic core product lines, (iii) $4.1 million of incremental sales recorded by Heatlink Group, acquired in June 2017, and (iv) $2.2 million of sales recorded by Die-Mold, acquired in March 2018. These increases were offset by (i) the absence of sales of $41.3 million recorded by Mueller-Xingrong, a business we sold during June 2017, and (ii) lower unit sales volume of $15.8 million in our non-domestic core product lines.

The increase in net sales during the first half of 2018 was primarily due to (i) higher net selling prices of $116.4 million in our core product lines, (ii) higher unit sales volume of $53.3 million in our domestic core product lines, (iii) $9.5 million of incremental sales recorded by Heatlink Group, and (iv) $2.2 million of sales recorded by Die-Mold. These increases were offset by (i) the absence of sales of $67.3 million recorded by Mueller-Xingrong and (ii) lower unit sales volume of $26.4 million in our non-domestic core product lines.

Net selling prices generally fluctuate with changes in raw material costs.  Changes in raw material costs are generally passed through to customers by adjustments to selling prices.  The following graph shows the Comex average copper price per pound by quarter for the current and prior fiscal years:

28

The following tables compare cost of goods sold and operating expenses as dollar amounts and as a percent of net sales for the first half of 2018 and 2017:

	For the Quarter Ended						For the Six Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018		July 1, 2017
Cost of goods sold	$	563,820		$	524,311		$	1,109,490	$	1,012,738
Depreciation and amortization	9,006			8,595			18,462		16,950
Selling, general, and administrative expense	38,428			36,299			72,485		71,873
(Gain) loss on sale of assets	(409		)	(1,631		)	3,060		(1,631		)
Operating expenses	$	610,845		$	567,574		$	1,203,497	$	1,099,930

	For the Quarter Ended				For the Six Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Cost of goods sold	85.1	%	85.4	%	85.2	%	84.9	%
Depreciation and amortization	1.4		1.4		1.4		1.4
Selling, general, and administrative expense	5.8		5.9		5.6		6.1
(Gain) loss on sale of assets	(0.1	)	(0.3	)	0.2		(0.1	)
Operating expenses	92.2	%	92.4	%	92.4	%	92.3	%

Q22018 compared to Q22017

The increase in cost of goods sold was primarily due to the increase in the average cost of copper, our principal raw material, and the increase in sales volume in our core product lines, partially offset by the decrease in sales volume resulting from the sale of Mueller-Xingrong.  Depreciation and amortization increased slightly in the second quarter of 2018 primarily as a result of several new long-lived assets being placed into service, offset by the impact of the sale of long-lived assets at Mueller-Xingrong. Selling, general, and administrative expense increased in the second quarter of 2018 primarily as a result of (i) an increase in employment costs, including incentive compensation, of $1.2 million, (ii) incremental expenses associated with Die-Mold and Heatlink Group of $1.1 million, and (iii) $0.6 million of expenses related to services provided under certain equipment transfer and licensing agreements. These increases were partially offset by the absence of expenses associated with Mueller-Xingrong of $0.9 million. In addition, we recognized a gain of $0.4 million on the sale of a corporate aircraft during the second quarter of 2018 and a gain of $1.6 million on the sale of Mueller-Xingrong during the second quarter of 2017.

Interest expense decreased slightly for the second quarter of 2018 primarily as a result of decreased borrowing costs associated with Mueller-Xingrong and our unsecured $350.0 million revolving credit facility. Other expense, net, for the second quarter of 2018 was consistent with the second quarter of 2017.

Our effective tax rate for the second quarter of 2018 was 27 percent compared with 31 percent for the same period last year.  The items impacting the effective tax rate for the second quarter of 2018 were primarily attributable to the provision for state income taxes, net of the federal benefit, of $1.4 million and miscellaneous items totaling $1.3 million.

For the second quarter of 2017, the difference between the effective tax rate and the amount computed using the U.S. federal statutory rate was primarily attributable to reductions for the U.S. production activities deduction of $0.9 million and the effect of foreign tax rates lower than statutory rates of $1.6 million. These items were partially offset by the provision for state income taxes, net of the federal benefit, of $0.8 million and miscellaneous items totaling $0.2 million.

During the second quarter of 2018 and the second quarter of 2017, we recognized losses of $0.1 million on our investments in unconsolidated affiliates. 

29

YTD 2018 compared to YTD 2017

The increase in cost of goods sold was primarily due to the increase in the average cost of copper and the increase in sales volume in our core product lines, partially offset by the decrease in sales volume resulting from the sale of Mueller-Xingrong.  Depreciation and amortization increased in the first half of 2018 as a result of several new long-lived assets being placed into service as well as long-lived assets of businesses acquired, partially offset by the impact of the sale of long-lived assets at Mueller-Xingrong. Selling, general, and administrative expense increased slightly for the first half of 2018 primarily as a result of (i) incremental expenses associated with Die-Mold and Heatlink Group of $2.5 million and (ii) an increase in employment costs, including incentive compensation, of $1.4 million. These increases were partially offset by (i) the absence of expenses associated with Mueller-Xingrong of $1.2 million, (ii) a reduction in product liability expense of $0.9 million, (iii) fees of $0.8 million received for services provided under certain equipment transfer and licensing agreements, and (iv) the absence of a fixed asset impairment charge of $0.4 million recorded during the first half of 2017. In addition, we recognized a loss of $3.1 million on the sale of a corporate aircraft during the first half of 2018 and a gain of $1.6 million on the sale of Mueller-Xingrong during the first half of 2017.

Interest expense increased in the first half of 2018 primarily as a result of interest associated with our 6% Subordinated Debentures that were issued during the first quarter of 2017 as part of our special dividend.  Other income, net, for the first half of 2018 was consistent with the first half of 2017.

Our effective tax rate for the first half of 2018 was 22 percent compared with 29 percent for the same period last year. The difference between the Company’s effective tax rate and the current U.S. statutory rate of 21 percent is primarily related to the reduction for the impact of investments in unconsolidated affiliates of $3.7 million. This was offset by the provision for state income taxes, net of the federal benefit, of $2.6 million, the inclusion for global intangible low-taxed income of $1.0 million, and miscellaneous items totaling $1.2 million.

For the first half of 2017, the difference between the effective tax rate and the amount computed using the U.S. federal statutory rate was primarily attributable to reductions for the U.S. production activities deduction of $1.8 million, the effect of foreign tax rates lower than statutory rates of $3.0 million, the tax benefit of equity compensation deductions of $1.7 million, and the impact of tax benefits from losses on investments in unconsolidated affiliates of $0.8 million. These items were partially offset by the provision for state income taxes, net of the federal benefit, of $1.7 million and miscellaneous items totaling $0.7 million.

During the first half of 2018, we recognized losses of $10.5 million on our investment in unconsolidated affiliates. During the first half of 2017, we recognized $1.4 million of losses on these investments. 

Piping Systems Segment

The following table compares summary operating results for the first half of 2018 and 2017 for the businesses comprising our Piping Systems segment:

	For the Quarter Ended				Percent Change		For the Six Months Ended				Percent Change
(In thousands)	June 30, 2018		July 1, 2017		2018 vs. 2017		June 30, 2018		July 1, 2017		2018 vs. 2017
Net sales	$	453,183	$	422,844	7.2	%	$	884,147	$	821,619	7.6	%
Operating income	42,019		34,792		20.8		74,968		65,382		14.7

30

The following are components of changes in net sales compared to the prior year:

	Quarter-to- Date		Year-to- Date
Net selling price in core product lines	8.7	%	9.6	%
Unit sales volume in core product lines	2.0		1.6
Acquisitions	1.5		1.4
Dispositions	(9.6	)	(8.1	)
Other	4.6		3.1
	7.2	%	7.6	%

The increase in net sales during the second quarter of 2018 was primarily attributable to (i) higher net selling prices in the segment’s core product lines, primarily copper tube, of $37.5 million, (ii) higher unit sales volume of $24.3 million in the segment’s domestic core product lines, (iii) an increase in net sales of $8.5 million in the segment’s non-core product lines, (iv) $4.1 million of incremental sales recorded by Heatlink Group, and (v) $2.2 million of sales recorded by Die-Mold. These increases were offset by (i) the absence of sales of $41.3 million recorded by Mueller-Xingrong and (ii) lower unit sales volume of $15.8 million in the segment’s non-domestic core product lines.

Net sales during the first half of 2018increased primarily as a result of (i) higher net selling prices in the segment’s core product lines of $79.0 million, (ii) higher unit sales volume of $39.9 million in the segment’s domestic core product lines, (iii) an increase in net sales of $17.0 million in the segment’s non-core product lines, (iv) $9.5 million of incremental sales recorded by Heatlink Group, and (v) $2.2 million of sales recorded by Die-Mold. These increases were offset by (i) the absence of sales of $67.3 million recorded by Mueller-Xingrong and (ii) lower unit sales volume of $26.4 million in the segment’s non-domestic core product lines.

The following tables compare cost of goods sold and operating expenses as dollar amounts and as a percent of net sales for the first half of 2018 and 2017:

	For the Quarter Ended					For the Six Months Ended
(In thousands)	June 30, 2018		July 1, 2017			June 30, 2018		July 1, 2017
Cost of goods sold	$	384,821	$	364,261		$	757,716	$	708,907
Depreciation and amortization	5,744		5,591			11,622		10,933
Selling, general, and administrative expense	20,599		19,831			39,841		38,028
(Gain) loss on sale of assets	—		(1,631		)	—		(1,631		)
Operating expenses	$	411,164	$	388,052		$	809,179	$	756,237

	For the Quarter Ended				For the Six Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Cost of goods sold	84.9	%	86.1	%	85.7	%	86.3	%
Depreciation and amortization	1.3		1.3		1.3		1.3
Selling, general, and administrative expense	4.5		4.8		4.5		4.6
(Gain) loss on sale of assets	—		(0.4	)	—		(0.2	)
Operating expenses	90.7	%	91.8	%	91.5	%	92.0	%

The increase in cost of goods sold during the second quarter of 2018 was primarily due to the increase in the average cost of copper and the increase in sales in the segment’s core and non-core product lines, partially offset by the decrease in sales volume resulting from the sale of Mueller-Xingrong.  Depreciation and amortization increased slightly primarily as a result of several new long-lived assets being placed into service, offset by the impact of the sale of long-lived assets at Mueller-Xingrong. Selling, general,

31

and administrative expense increased for the second quarter of 2018 primarily as a result of (i) incremental expenses associated with Heatlink Group and Die-Mold of $1.1 million, (ii) an increase in legal and professional fees of $0.6 million, and (iii) an increase in employment costs, including incentive compensation, of $0.3 million. These increases were partially offset by (i) the absence of expenses associated with Mueller-Xingrong of $0.9 million and (ii) the absence of a fixed asset impairment charge of $0.4 million recorded during the second quarter of 2017. In addition, we recognized a gain of $1.6 million on the sale of Mueller-Xingrong during the second quarter of 2017.

The increase in cost of goods sold during the first half of 2018 was primarily due to the increase in the average cost of copper and the increase in sales in the segment’s core and non-core product lines, partially offset by the decrease in sales volume resulting from the sale of Mueller-Xingrong.  Depreciation and amortization increased slightly as a result of several new long-lived assets being placed into service as well as long-lived assets of businesses acquired, partially offset by the impact of the sale of long-lived assets at Mueller-Xingrong. Selling, general, and administrative expenses increased for the first half of 2018, primarily due to (i) incremental expenses associated with Die-Mold and Heatlink Group of $2.5 million and (ii) an increase in legal and professional fees of $1.2 million.  This was partially offset by (i) the absence of expenses associated with Mueller-Xingrong of $1.2 million, (ii) net gains on the sale of long-lived assets of $0.7 million. In addition, we recognized a gain of $1.6 million on the sale of Mueller-Xingrong during the first half of 2017.

Industrial Metals Segment

The following table compares summary operating results for the first half of 2018 and 2017 for the businesses comprising our Industrial Metals segment:

	For the Quarter Ended				Percent Change		For the Six Months Ended				Percent Change
(In thousands)	June 30, 2018		July 1, 2017		2018 vs. 2017		June 30, 2018		July 1, 2017		2018 vs. 2017
Net sales	$	175,891	$	154,504	13.8	%	$	353,223	$	304,341	16.1	%
Operating income	16,093		16,389		(1.8	)	38,726		36,736		5.4

The following are components of changes in net sales compared to the prior year:

	Quarter-to- Date		Year-to- Date
Net selling price in core product lines	12.1	%	12.7	%
Unit sales volume in core product lines	5.2		4.6
Other	(3.5	)	(1.2	)
	13.8	%	16.1	%

The increase in net sales during the second quarter of 2018 was primarily due to (i) higher net selling prices of $17.8 million in the segment’s core product lines, primarily brass rod, and (ii) higher unit sales volume of $7.7 million.

The increase in net sales during the first half of 2018 was primarily due to (i) higher net selling prices of $37.4 million and (ii) higher unit sales volume of $13.5 million in the segment’s core product lines. 

32

The following tables compare cost of goods sold and operating expenses as dollar amounts and as a percent of net sales for the first half of 2018 and 2017:

	For the Quarter Ended				For the Six Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Cost of goods sold	$	154,401	$	132,972	$	303,824	$	257,015
Depreciation and amortization	1,948		1,904		3,851		3,802
Selling, general and administrative expense	3,449		3,239		6,822		6,788
Operating expenses	$	159,798	$	138,115	$	314,497	$	267,605

	For the Quarter Ended				For the Six Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Cost of goods sold	87.8	%	86.1	%	86.0	%	84.4	%
Depreciation and amortization	1.1		1.2		1.1		1.2
Selling, general and administrative expense	2.0		2.1		1.9		2.3
Operating expenses	90.9	%	89.4	%	89.0	%	87.9	%

The increase in cost of goods sold during the second quarter of 2018 was primarily due to the increase in the average cost of copper and the increase in sales volume in the segment’s core product lines.  Depreciation and amortization and selling, general, and administrative expenses for the second quarter of 2018 were consistent with what was recorded in the second quarter of 2017.

The increase in cost of goods sold during the first half of 2018 was primarily due to the increase in the average cost of copper and the increase in sales volume in the segment’s core product lines.  Depreciation and amortization and selling, general, and administrative expenses for the first half of 2018 were consistent with what was recorded in the first half of 2017.

Climate Segment

The following table compares summary operating results for the first half of 2018 and 2017 for the businesses comprising our Climate segment:

	For the Quarter Ended				Percent Change		For the Six Months Ended				Percent Change
(In thousands)	June 30, 2018		July 1, 2017		2018 vs. 2017		June 30, 2018		July 1, 2017		2018 vs. 2017
Net sales	$	39,172	$	36,636	6.9	%	$	75,235	$	70,915	6.1	%
Operating income	5,347		6,116		(12.6	)	10,894		11,726		(7.1	)

Sales for the second quarter and first half of 2018increased primarily as a result of an increase in volume and change in product mix. 

33

The following tables compare cost of goods sold and operating expenses as dollar amounts and as a percent of net sales for the first half of 2018 and 2017:

	For the Quarter Ended				For the Six Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Cost of goods sold	$	30,688	$	27,449	$	57,974	$	53,013
Depreciation and amortization	627		615		1,248		1,244
Selling, general and administrative expense	2,510		2,456		5,119		4,932
Operating expenses	$	33,825	$	30,520	$	64,341	$	59,189

	For the Quarter Ended				For the Six Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Cost of goods sold	78.3	%	74.9	%	77.1	%	74.8	%
Depreciation and amortization	1.6		1.7		1.7		1.8
Selling, general and administrative expense	6.4		6.7		6.7		6.9
Operating expenses	86.3	%	83.3	%	85.5	%	83.5	%

Cost of goods sold increased during the second quarter of 2018 primarily due to the increase in volume and change in product mix within the segment.  Depreciation and amortization and selling, general, and administrative expenses for the second quarter of 2018 were consistent with the expense recorded for the second quarter of 2017.

The increase in cost of goods sold during the first half of 2018 was related to the increase in volume and change in product mix within the segment. Depreciation and amortization and selling, general, and administrative expenses were consistent with the first half of 2017.

Liquidity and Capital Resources

The following table presents selected financial information for the first half of 2018 and 2017:

(In thousands)	2018			2017
Increase (decrease) in:
Cash, cash equivalents, and restricted cash	$	157,885		$	(188,412	)
Property, plant, and equipment, net	(19,485		)	(10,637		)
Total debt	153,414			276,262
Working capital, net of cash and current debt	49,472			33,912
Net cash provided by operating activities	36,219			12,547
Net cash used in investing activities	(12,582		)	(11,311		)
Net cash provided by (used in) financing activities	134,616			(193,164		)

Cash Flows from Operating Activities

During the six months ended June 30, 2018, net cash provided by operating activities was primarily attributable to (i) consolidated net income of $58.2 million, (ii) a decrease in inventories of $33.4 million, (iii) depreciation and amortization of $18.6 million, (iv) a decrease in other assets of $12.4 million, (v) losses from unconsolidated affiliates of $10.5 million, and (vi) a loss of $3.1 million on the sale of a corporate aircraft. This cash increase was offset by (i) an increase in accounts receivable of $90.3 million and (ii) a decrease in current liabilities of $11.6 million. The decrease in inventories was primarily driven by the use of excess

34

inventory built at the end of 2017 due to a casting outage in our brass rod mill that impaired our ability to melt scrap returns. The fluctuations in accounts receivable and current liabilities were primarily due to increased selling prices and sales volume in certain businesses and additional working capital needs in the first half of 2018.

During the six months ended July 1, 2017, net cash provided by operating activities was primarily attributable to (i) consolidated net income of $58.3 million and (ii) depreciation and amortization of $17.1 million. This cash increase was offset by (i) an increase in accounts receivables of $47.1 million and (ii) an increase in inventories of $10.9 million. The fluctuations were primarily due to increased sales volume in certain businesses and additional working capital needs in the first half of 2017.

Cash Flows from Investing Activities

The major components of net cash used in investing activities during the six months ended June 30, 2018 included (i) $12.5 million for the purchase of Die-Mold, net of cash acquired, and (ii) capital expenditures of $10.9 million. These uses of cash was offset by proceeds on the sale of the corporate aircraft of $11.4 million.

The major components of net cash used in investing activities during the six months ended July 1, 2017 included (i) $18.4 million for the purchase of Heatlink Group, net of cash acquired, and (ii) capital expenditures of $11.9 million. These uses of cash were offset by $17.5 million of proceeds, net of cash sold, from the sale of our 50.5 percent equity interest in Mueller-Xingrong.

Cash Flows from Financing Activities

For the six months ended June 30, 2018, net cash provided by financing activities consisted primarily of the issuance of debt under our Credit Agreement of $190.0 million. This was offset by (i) $35.0 million used to reduce the debt outstanding under our Credit Agreement, (ii) $11.4 million used for the payment of the regular quarterly dividend to stockholders of the Company, (iii) $6.6 million used to repurchase common stock, and (iv) $3.1 million used for repayment of debt by Jungwoo-Mueller.

For the six months ended July 1, 2017, net cash used in financing activities consisted primarily of (i) $185.5 million used for payment of the special dividend and the regular quarterly dividends to stockholders of the Company, (ii) $3.3 million used for repayment of debt by Mueller-Xingrong and Jungwoo-Mueller, and (iii) $2.9 million used for payment of dividends to noncontrolling interests.

Liquidity and Outlook

We believe that cash provided by operations, funds available under the Credit Agreement, and cash on hand will be adequate to meet our liquidity needs, including working capital, capital expenditures, and debt payment obligations.  As of June 30, 2018 our current ratio was 3.4 to 1.

We have significant environmental remediation obligations which we expect to pay over future years.  Cash used for environmental remediation activities was approximately $3.5 million during the first half of 2018.  We expect to spend approximately $1.4 million for the remainder of 2018 for ongoing environmental remediation activities.

The Company declared and paid a quarterly cash dividend of 10.0 cents per common share during the first and second quarters of 2018 and 2017.  Additionally, during the first quarter of 2017, the Company distributed a special dividend composed of $3.00 in cash and $5.00 in principal amount of the Company’s 6% Subordinated Debentures (Debentures) due 2027 for each share of common stock outstanding. Payment of dividends in the future is dependent upon our financial condition, cash flows, capital requirements, earnings, and other factors.  

Long-Term Debt

As of June 30, 2018, the Company’s total debt was $618.5 million or 51.9 percent of its total capitalization.

The Debentures distributed as part of our special dividend are subordinated to all other funded debt of the Company and are callable, in whole or in part, at any time at the option of the Company, subject to declining call premiums during the first five years. The Debentures also grant each holder the right to require the Company to repurchase such holder’s Debentures in the event of a change in control at declining repurchase premiums during the first five years. Interest is payable semiannually on September 1 and March 1, and commenced September 1, 2017. Total Debentures outstanding as of June 30, 2018 were $284.5 million.

35

The Company’s Credit Agreement provides for an unsecured $350.0 million revolving credit facility which matures on December 6, 2021.  Total borrowings under the Credit Agreement were $315.0 million at June 30, 2018, which included $150.0 million borrowed on June 29, 2018 to fund the ATCO acquisition that occurred on July 2, 2018. The Credit Agreement backed approximately $8.7 million in letters of credit at the end of the second quarter of 2018.  

On July 6, 2018 and July 16, 2018, the Company made payments of $50.0 million and $25.0 million, respectively, to reduce the debt outstanding under its Credit Agreement.

Covenants contained in the Company’s financing obligations require, among other things, the maintenance of minimum levels of tangible net worth and the satisfaction of certain minimum financial ratios.  As of June 30, 2018, the Company was in compliance with all of its debt covenants.

Share Repurchase Program

The Board of Directors has extended, until August 2018, the authorization to repurchase up to 20 million shares of the Company’s common stock through open market transactions or through privately negotiated transactions.  We may cancel, suspend, or extend the time period for the repurchase of shares at any time.  Any repurchases will be funded primarily through existing cash and cash from operations.  We may hold any shares repurchased in treasury or use a portion of the repurchased shares for our stock-based compensation plans, as well as for other corporate purposes.  From its initial authorization in 1999 through June 30, 2018, the Company has repurchased approximately 5.0 million shares under this authorization.  

Contractual Cash Obligations

There have been no significant changes in our contractual cash obligations reported at December 30, 2017.

Item 3.  Quantitative and Qualitative Disclosures About Market Risk

The Company is exposed to market risk from changes in raw material and energy costs, interest rates, and foreign currency exchange rates.  To reduce such risks, we may periodically use financial instruments.  Hedging transactions are authorized and executed pursuant to policies and procedures.  Further, we do not buy or sell financial instruments for trading purposes.

Cost and Availability of Raw Materials and Energy

Raw materials, primarily copper and brass, represent the largest component of the Company’s variable costs of production.  The cost of these materials is subject to global market fluctuations caused by factors beyond our control.  Significant increases in the cost of metal, to the extent not reflected in prices for our finished products, or the lack of availability could materially and adversely affect our business, results of operations, and financial condition.

The Company occasionally enters into future fixed-price arrangements with certain customers.  We may utilize futures contracts to hedge risks associated with these forward fixed-price arrangements.  We may also utilize futures contracts to manage price risk associated with inventory.  Depending on the nature of the hedge, changes in the fair value of the futures contracts will either be offset against the change in fair value of the inventory through earnings or recognized as a component of accumulated other comprehensive income (AOCI) in equity and reflected in earnings upon the sale of inventory.  Periodic value fluctuations of the contracts generally offset the value fluctuations of the underlying fixed-price transactions or inventory.  At June 30, 2018, we held open futures contracts to purchase approximately $48.2 million of copper over the next 15 months related to fixed-price sales orders and to sell approximately $0.2 million of copper over the next three months related to copper inventory.

We may enter into futures contracts or forward fixed-price arrangements with certain vendors to manage price risk associated with natural gas purchases.  The effective portion of gains and losses with respect to these positions are deferred in equity as a component of AOCI and reflected in earnings upon consumption of natural gas.  Periodic value fluctuations of the futures contracts generally offset the value fluctuations of the underlying natural gas prices.  As of June 30, 2018, we held no open futures contracts to purchase natural gas.

Interest Rates

At June 30, 2018, we had variable-rate debt outstanding of $321.0 million.  At this borrowing level, a hypothetical 10 percent increase in interest rates would have had an insignificant unfavorable impact on our pretax earnings and cash flows.  The primary interest rate exposure on variable-rate debt is based on LIBOR.  

36

Foreign Currency Exchange Rates

Foreign currency exposures arising from transactions include firm commitments and anticipated transactions denominated in a currency other than an entity’s functional currency.  The Company and its subsidiaries generally enter into transactions denominated in their respective functional currencies.  We may utilize certain futures or forward contracts with financial institutions to hedge foreign currency transactional exposures.  Gains and losses with respect to these positions are deferred in equity as a component of AOCI and reflected in earnings upon collection of receivables or payment of commitments.  At June 30, 2018, we had open forward contracts with a financial institution to sell approximately 5.0 million euros, 17.1 million Swedish kronor, and 10.0 million Norwegian kroner through October 2018.  

The Company’s primary foreign currency exposure arises from foreign-denominated revenues and profits and their translation into U.S. dollars.  The primary currencies to which we are exposed include the Canadian dollar, the British pound sterling, the euro, the Mexican peso, the South Korean won, and the Chinese renminbi.  The Company generally views its investments in foreign subsidiaries with a functional currency other than the U.S. dollar as long-term.  As a result, we generally do not hedge these net investments.

Cautionary Statement Regarding Forward Looking Information

This Quarterly Report contains various forward-looking statements and includes assumptions concerning the Company’s operations, future results, and prospects.  These forward-looking statements are based on current expectations and are subject to risk and uncertainties, and may be influenced by factors that could cause actual outcomes and results to be materially different from those predicted.  The forward-looking statements reflect knowledge and information available as of the date of preparation of the Quarterly Report, and the Company undertakes no obligation to update these forward-looking statements.  We identify the forward-looking statements by using the words “anticipates,” “believes,” “expects,” “intends” or similar expressions in such statements.

In connection with the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, the Company provides the following cautionary statement identifying important economic, political, and technological factors, among others, which could cause actual results or events to differ materially from those set forth in or implied by the forward-looking statements and related assumptions.  In addition to those factors discussed under “Risk Factors” in the Annual Report on Form 10-K for the year ended December 30, 2017, such factors include: (i) the current and projected future business environment, including interest rates and capital and consumer spending; (ii) the domestic housing and commercial construction industry environment; (iii) availability and price fluctuations in commodities (including copper, natural gas, and other raw materials, including crude oil that indirectly affects plastic resins); (iv) competitive factors and competitor responses to the Company’s initiatives; (v) stability of government laws and regulations, including taxes; (vi) availability of financing; and (vii) continuation of the environment to make acquisitions, domestic and foreign, including regulatory requirements and market values of candidates.

Item 4.  Controls and Procedures

Evaluation of Disclosure Controls and Procedures

The Company maintains disclosure controls and procedures designed to ensure information required to be disclosed in Company reports filed under the Securities Exchange Act of 1934, as amended (the Exchange Act), is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms.  Disclosure controls and procedures are designed to provide reasonable assurance that information required to be disclosed in Company reports filed under the Exchange Act is accumulated and communicated to management, including the Company’s Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

The Company’s management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the Company’s disclosure controls and procedures pursuant to Rule 13a-15(e) of the Exchange Act as of June 30, 2018.  Based on that evaluation, the Company’s Chief Executive Officer and Chief Financial Officer have concluded that the Company’s disclosure controls and procedures are effective as of June 30, 2018 to ensure that information required to be disclosed in Company reports filed under the Exchange Act is (i) recorded, processed, summarized and reported within the time periods specified in the SEC rules and forms and (ii) accumulated and communicated to management, including the Company’s principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

37

Changes in Internal Control over Financial Reporting

There were no changes in the Company’s internal control over financial reporting during the Company’s fiscal quarter ending June 30, 2018, that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

PART II.  OTHER INFORMATION

Item 1.  Legal Proceedings

General

The Company is involved in certain litigation as a result of claims that arose in the ordinary course of business.  Additionally, the Company may realize the benefit of certain legal claims and litigation in the future; these gain contingencies are not recognized in the Condensed Consolidated Financial Statements. For a description of material pending legal proceedings, see “Note 9 - Commitments and Contingencies” in the Notes to the Condensed Consolidated Financial Statements, which is incorporated herein by reference.

Item 1A.  Risk Factors

The Company is exposed to risk as it operates its businesses.  To provide a framework to understand the operating environment of the Company, we have provided a brief explanation of the more significant risks associated with our businesses in our 2017 Annual Report on Form 10-K.  There have been no material changes in risk factors that were previously disclosed in our 2017 Annual Report on Form 10-K.

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

Issuer Purchases of Equity Securities

The Company’s Board of Directors has extended, until August 2018, the authorization to repurchase up to 20 million shares of the Company’s common stock through open market transactions or through privately negotiated transactions.  The Company may cancel, suspend, or extend the time period for the repurchase of shares at any time.  Any repurchases will be funded primarily through existing cash and cash from operations.  The Company may hold any shares repurchased in treasury or use a portion of the repurchased shares for its stock-based compensation plans, as well as for other corporate purposes.  From its initial authorization in 1999 through June 30, 2018, the Company had repurchased approximately 5.0 million shares under this authorization.  Below is a summary of the Company’s stock repurchases for the period ended June 30, 2018.

	(a) Total Number of Shares Purchased (1)	(b) Average Price Paid per Share		(c) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	(d) Maximum Number of Shares That May Yet Be Purchased Under the Plans or Programs (2)
April 1, 2018 - April 28, 2018	1,042	$	24.13	—	15,037,060
April 29, 2018 - May 26, 2018	6,549	$	26.34	—	15,037,060
May 27, 2018 - June 30, 2018	3,155	$	31.21	—	15,037,060
Total	10,746			—

⁽¹⁾ Shares tendered to the Company by holders of stock-based awards in payment of the purchase price and/or withholding taxes upon exercise and/or vesting. Also includes shares resulting from restricted stock forfeitures at the average cost of treasury stock.

⁽²⁾ Shares available to be purchased under the Company’s 20 million share repurchase authorization until August 2018. The extension of the authorization was announced on October 25, 2017.

38

Item 6.  Exhibits

10.1	Stock Purchase Agreement, dated as of July 2, 2018, by and among ATCO Rubber Products, Inc., the Sellers named therein, the Company, and Ramesh Bhatia (Incorporated herein by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K, dated July 6, 2018).
31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended.
31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended.
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.INS	XBRL Instance Document
101.LAB	XBRL Taxonomy Extension Label Linkbase
101.PRE	XBRL Presentation Linkbase Document
101.SCH	XBRL Taxonomy Extension Schema

Items 3, 4, and 5 are not applicable and have been omitted.

39

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.

	MUELLER INDUSTRIES, INC.
	/s/ Jeffrey A. Martin
	Jeffrey A. Martin
July 24, 2018	Chief Financial Officer and Treasurer
Date	(Principal Financial and Accounting Officer)
	/s/ Anthony J. Steinriede
July 24, 2018	Anthony J. Steinriede
Date	Vice President – Corporate Controller

40

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Gregory L. Christopher, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Mueller Industries, Inc.;
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: July 24, 2018
	/s/ Gregory L. Christopher
	Gregory L. Christopher
	Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Jeffrey A. Martin, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Mueller Industries, Inc.;
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: July 24, 2018
	/s/Jeffrey A. Martin
	Jeffrey A. Martin
	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 Mueller Industries, Inc. (the "Company") on Form 10-Q for the period ending June 30, 2018 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Gregory L. Christopher, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(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/ GREGORY L. CHRISTOPHER

Gregory L. Christopher

Chief Executive Officer

July 24, 2018

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 Mueller Industries, Inc. (the "Company") on Form 10-Q for the period ending June 30, 2018 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Jeffrey A. Martin, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(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/ JEFFREY A. MARTIN

Jeffrey A. Martin

Chief Financial Officer

July 24, 2018

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 20, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	MUELLER INDUSTRIES INC
Entity Central Index Key	0000089439
Current Fiscal Year End Date	--12-29
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		57,590,703

XML

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	[1]	Jun. 30, 2018		Jul. 01, 2017
Income Statement [Abstract]
Net sales	$ 662,773	$ 614,266		$ 1,302,833		$ 1,192,186	[1]
Cost of goods sold	563,820	524,311		1,109,490		1,012,738	[1]
Depreciation and amortization	9,006	8,595		18,462		16,950	[1]
Selling, general, and administrative expense	38,428	36,299		72,485		71,873	[1]
(Gain) loss on sale of assets	(409)	(1,631)		3,060		(1,631)
Operating income	51,928	46,692		99,336		92,256	[1]
Interest expense	(6,073)	(6,442)		(11,982)		(8,973)	[1]
Other income, net	586	342		1,146		936	[1]
Income before income taxes	46,441	40,592		88,500		84,219	[1]
Income tax expense	(12,411)	(12,650)		(19,806)		(24,579)	[1]
Loss from unconsolidated affiliates, net of foreign tax	(148)	(109)		(10,468)		(1,352)	[1],[2]
Consolidated net income	33,882	27,833		58,226	[1]	58,288	[1],[2]
Net income attributable to noncontrolling interests	(700)	(200)		(916)		(668)	[1]
Net income attributable to Mueller Industries, Inc.	$ 33,182	$ 27,633		$ 57,310		$ 57,620	[1]
Weighted average shares for basic earnings per share (in shares)	56,797	56,906		56,848		56,843	[1]
Effect of dilutive stock-based awards (in shares)	514	511		516		585	[1]
Adjusted weighted average shares for diluted earnings per share (in shares)	57,311	57,417		57,364		57,428	[1]
Basic earnings per share (in dollars per share)	$ 0.58	$ 0.49		$ 1.01		$ 1.01	[1]
Diluted earnings per share (in dollars per share)	0.58	0.48		1.00		1.00	[1]
Dividends per share (in dollars per share)	$ 0.1	$ 0.1		$ 0.2		$ 8.2	[1]

[1] The Condensed Consolidated Statements of Income for the quarter and six months ended July 1, 2017 have been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income. Refer to Note 1 for further discussion.

[2] The Condensed Consolidated Statement of Cash Flows for the six months ended July 1, 2017 has been adjusted to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The Condensed Consolidated Statements of Cash Flows reflects the changes during the periods in the total of cash, cash equivalents, and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown. Refer to Note 1 for further discussion.

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017		Jun. 30, 2018		Jul. 01, 2017
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 33,882	$ 27,833	[1]	$ 58,226	[1]	$ 58,288	[1],[2]
Other comprehensive income (loss), net of tax:
Foreign currency translation	(11,622)	906		(6,645)		8,116
Net change with respect to derivative instruments and hedging activities, net of tax of $(3), $(89), $276, and $(185)	35	261		(1,027)		317
Net change in pension and postretirement obligation adjustments, net of tax of $(322), $172, $(142), and $183	950	(405)		499		(365)
Attributable to unconsolidated affiliates, net of tax of $(35), $(704), $81, and $199	121	1,247		(280)		(351)
Other, net	0	(236)		0		(380)
Total other comprehensive (loss) income, net	(10,516)	1,773		(7,453)		7,337
Consolidated comprehensive income	23,366	29,606		50,773		65,625
Comprehensive income attributable to noncontrolling interests	(670)	(386)		(1,063)		(1,503)
Comprehensive income attributable to Mueller Industries, Inc.	$ 22,696	$ 29,220		$ 49,710		$ 64,122

[1] The Condensed Consolidated Statements of Income for the quarter and six months ended July 1, 2017 have been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income. Refer to Note 1 for further discussion.

[2] The Condensed Consolidated Statement of Cash Flows for the six months ended July 1, 2017 has been adjusted to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The Condensed Consolidated Statements of Cash Flows reflects the changes during the periods in the total of cash, cash equivalents, and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown. Refer to Note 1 for further discussion.

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Statement of Comprehensive Income [Abstract]
Net change with respect to derivative instruments and hedging activities, tax (expense) benefit	$ (3)	$ (89)	$ 276	$ (185)
Net actuarial loss on pension and postretirement obligations, tax benefit (expense)	(322)	172	(142)	183
Attributable to unconsolidated affiliates, tax benefit (expense)	$ (35)	$ (704)	$ 81	$ 199

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Current assets:
Cash and cash equivalents	$ 281,445	$ 120,269
Accounts receivable, less allowance for doubtful accounts of $760 in 2018 and $980 in 2017	333,903	244,795
Inventories	294,540	327,901
Other current assets	27,625	46,150
Total current assets	937,513	739,115
Property, plant, and equipment, net	284,836	304,321
Goodwill, net	139,012	130,293
Intangible assets, net	39,237	42,008
Investment in unconsolidated affiliates	70,065	76,434
Other assets	25,721	28,002
Total assets	1,496,384	1,320,173
Current liabilities:
Current portion of debt	59,952	16,480
Accounts payable	112,090	102,503
Accrued wages and other employee costs	31,550	33,546
Other current liabilities	69,882	89,723
Total current liabilities	273,474	242,252
Long-term debt, less current portion	558,534	448,592
Pension liabilities	10,245	11,606
Postretirement benefits other than pensions	16,754	17,107
Environmental reserves	22,984	23,699
Deferred income taxes	19,650	19,403
Other noncurrent liabilities	22,654	21,486
Total liabilities	924,295	784,145
Mueller Industries, Inc. stockholders' equity:
Preferred stock - $1.00 par value; shares authorized 5,000,000; none outstanding	0	0
Common stock - $.01 par value; shares authorized 100,000,000; issued 80,183,004; outstanding 57,590,703 in 2018 and 57,809,509 in 2017	802	802
Additional paid-in capital	277,987	274,585
Retained earnings	788,753	743,503
Accumulated other comprehensive loss	(58,101)	(51,056)
Treasury common stock, at cost	(451,740)	(445,723)
Total Mueller Industries, Inc. stockholders' equity	557,701	522,111
Noncontrolling interests	14,388	13,917
Total equity	572,089	536,028
Commitments and contingencies	0	0
Total liabilities and equity	$ 1,496,384	$ 1,320,173

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 760	$ 980
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
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)	100,000,000	100,000,000
Common stock, shares issued (in shares)	80,183,004	80,183,004
Common stock, shares outstanding (in shares)	57,590,703	57,809,509

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2018	Jul. 01, 2017	[2]
Cash flows from operating activities
Consolidated net income	[1]	$ 58,226	$ 58,288
Reconciliation of consolidated net income to net cash provided by operating activities:
Depreciation and amortization		18,622	17,093
Stock-based compensation expense		3,906	3,692
Loss from unconsolidated affiliates		10,468	1,352	[1]
Gain on sale of business		0	(1,631)
Loss on disposals of properties		2,646	81
Gain on sales of securities		0	(611)
Impairment charge		0	411
Deferred income taxes		(1,260)	3
Changes in assets and liabilities:
Receivables		(90,345)	(47,108)
Inventories		33,357	(10,874)
Other assets		12,405	(4,723)
Current liabilities		(11,566)	(1,262)
Other liabilities		(1,361)	(1,086)
Other, net		1,121	(1,078)
Net cash provided by operating activities		36,219	12,547
Cash flows from investing activities
Capital expenditures		(10,882)	(11,908)
Acquisition of businesses, net of cash acquired		(12,467)	(18,419)
Proceeds from sale of business, net of cash sold		0	17,483
Investment in unconsolidated affiliates		(609)	(1,617)
Proceeds from sales of assets		11,376	1,363
Proceeds from sales of securities		0	1,787
Net cash used in investing activities		(12,582)	(11,311)
Cash flows from financing activities
Dividends paid to stockholders of Mueller Industries, Inc.		(11,360)	(185,539)
Dividends paid to noncontrolling interests		(592)	(2,909)
Repurchase of common stock		(6,575)	0
Issuance of long-term debt		193,247	0
Repayments of long-term debt		(37,107)	(611)
Repayment of debt by consolidated joint ventures, net		(3,100)	(3,320)
Net cash received (used) to settle stock-based awards		103	(785)
Net cash provided by (used in) financing activities		134,616	(193,164)
Effect of exchange rate changes on cash		(368)	3,516
Increase (decrease) in cash, cash equivalents, and restricted cash		157,885	(188,412)
Cash, cash equivalents, and restricted cash at the beginning of the period		126,563	360,469
Cash, cash equivalents, and restricted cash at the end of the period		$ 284,448	$ 172,057

[1] The Condensed Consolidated Statements of Income for the quarter and six months ended July 1, 2017 have been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income. Refer to Note 1 for further discussion.

[2] The Condensed Consolidated Statement of Cash Flows for the six months ended July 1, 2017 has been adjusted to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The Condensed Consolidated Statements of Cash Flows reflects the changes during the periods in the total of cash, cash equivalents, and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown. Refer to Note 1 for further discussion.

XML

Recent Accounting Standards

6 Months Ended

Jun. 30, 2018

Accounting Changes and Error Corrections [Abstract]

Recent Accounting Standards

Recent Accounting Standards

Adopted

In February 2018, the Financial Accounting Standards Board (FASB) issued ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (AOCI). The ASU permits entities to reclassify tax effects stranded in AOCI as a result of tax reform to retained earnings. The guidance is effective for the Company in interim and annual periods beginning in 2019. Early adoption is permitted and can be applied retrospectively or in the period of adoption. The Company early adopted the ASU during the first quarter of 2018, which resulted in a reclassification of $556 thousand from AOCI to retained earnings during the quarter.

In March 2017, the FASB issued ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The ASU requires employers that sponsor defined benefit pension and/or other postretirement benefit plans to present the service cost component of net periodic benefit cost in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period and other components of net periodic benefits cost separately from the line item(s) that includes the service cost and outside of any subtotal of operating income. The Company adopted the ASU during the first quarter of 2018 using a retrospective approach for each period presented, and elected to use the practical expedient that allows the Company to use the amounts previously presented in its Benefit Plans disclosure as the estimation basis for applying the retrospective presentation requirements. Prior to the adoption of the ASU, net periodic benefit cost (income) was reported within selling, general, and administrative expense in the Condensed Consolidated Statements of Income. The prior periods have been revised to conform to the current period presentation, resulting in the reclassification of $111 thousand and $154 thousand of net periodic benefit income from operating income to other income, net for the quarter and six months ended July 1, 2017, respectively.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The ASU provides guidance to assist entities in evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The updated guidance requires prospective adoption. Early adoption is permitted. The Company early adopted the ASU during the first quarter of 2018 and the adoption had no impact on its Condensed Consolidated Financial Statements.

In December 2016, the FASB issued ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers. The ASU provides correction or improvement to the guidance previously issued in ASU 2014-09, Revenue from Contracts with Customers (Topic 606). Under the ASU, an entity will recognize revenue to depict the transfer of promised goods or services to customers at an amount that reflects the consideration that it expects to receive in exchange for the goods or services. It also requires more detailed disclosures to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The ASU requires revenue to be recognized over time (i.e., throughout the production process) rather than at a point in time (generally upon shipment to the customer) if performance does not create an asset with an alternative use to the entity and the entity has an enforceable right to payment for performance completed to date.  

The Company generates revenue through the manufacture and sale of copper tube and fittings; line sets; brass and copper alloy rod, bar, and shapes; aluminum impact extrusions; plastic fittings and valves; refrigeration valves and fittings; fabricated tubular products; and steel nipples. The Company also resells imported brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products.

Given the nature of the Company’s business and product offerings, sales transactions with customers are generally comprised of a single performance obligation that involves delivery of the products identified in the contracts with customers.  Performance obligations are generally satisfied at the point in time of shipment and payment is generally due within sixty days. Variable consideration is estimated for future rebates on certain product lines and product returns. The Company records variable consideration as an adjustment to the transaction price in the period it is incurred. Since variable consideration is settled within a short period of time, the time value of money is not significant.

The Company also evaluated specific contract terms, primarily within the Industrial Metals and Climate segments, related to the production of customized products and payment rights and determined that there are no significant changes to the timing or nature of revenue recognition under the ASU. As part of the overall evaluation of the standard, the Company has assessed and implemented necessary changes to its accounting policies, practices, and internal controls over financial reporting to support the standard.

The Company adopted the ASU during the first quarter of 2018 using the modified retrospective method for all contracts with customers. The adoption did not result in a significant impact on opening retained earnings. Revenue for prior periods have not been adjusted and continue to be reported under Revenue Recognition (Topic 605). No significant judgments were made in the application of the guidance in ASC 606 and there were no material contract assets, contract liabilities, or deferred contract costs as of June 30, 2018.

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The ASU requires entities to show the changes in the total of cash, cash equivalents, restricted cash, and restricted cash equivalents in the statement of cash flows. As a result, entities will no longer present transfers between cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. The Company adopted the ASU during the first quarter of 2018 using a retrospective approach for each period presented. Prior to the adoption of the ASU, the Company presented the change in restricted cash balances separately as a cash flow from investing activity. Upon adoption, the Company included restricted cash in each of the balances of the cash, cash equivalents, and restricted cash at the beginning and end of periods in the Condensed Consolidated Statements of Cash Flows. The prior period has been revised to conform to the current period presentation, and as a result, net cash flows for the six months ended July 1, 2017 increased by $4.5 million. A reconciliation of cash, cash equivalents, and restricted cash as of June 30, 2018 and December 30, 2017 is as follows:

(In thousands)	June 30, 2018		December 30, 2017
Cash & cash equivalents	$	281,445	$	120,269
Restricted cash included within other current assets	2,898		6,189
Restricted cash included within other assets	105		105
Total cash, cash equivalents, and restricted cash	$	284,448	$	126,563

Amounts included in restricted cash relate to required deposits in brokerage accounts that facilitate the Company’s hedging activities as well as imprest funds for the Company’s self-insured workers’ compensation program.

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. The ASU requires companies to account for the income tax effects of intercompany transfers of assets other than inventory when the transfer occurs. Companies will still be required to defer the income tax effects of intercompany inventory transactions in an exception to the income tax accounting guidance. The Company adopted the ASU during the first quarter of 2018 and the adoption had no impact on its Condensed Consolidated Financial Statements.

Issued

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842).  The ASU requires an entity to recognize a right-of-use asset and lease liability for all leases with terms of more than 12 months.  Recognition, measurement and presentation of expenses will depend on classification as a financing or operating lease.  The amendments also require certain quantitative and qualitative disclosures about leasing arrangements.  The ASU will be effective for interim and annual periods beginning in 2019.  Early adoption is permitted.  Currently the guidance requires a modified retrospective adoption, but in January 2018 the FASB proposed ASU No. 2018-01, Leases (Topic 842), Land Easement Practical Expedient for Transition to Topic 842, which if approved will allow entities to elect a simplified transition approach whereby they would apply the provisions of the new guidance at the effective date without adjusting the comparative periods presented. The Company is still evaluating the effects that the provisions of the ASU will have on its Condensed Consolidated Financial Statements.

XML

Earnings per Common Share

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Earnings per Common Share

Earnings per Common Share

Basic per share amounts have been computed based on the average number of common shares outstanding.  Diluted per share amounts reflect the increase in average common shares outstanding that would result from the assumed exercise of outstanding stock options and vesting of restricted stock awards, computed using the treasury stock method.  Approximately six thousand and four thousand stock-based awards were excluded from the computation of diluted earnings per share for the quarters ended June 30, 2018 and July 1, 2017, respectively, because they were antidilutive.

XML

Acquisitions and Dispositions

6 Months Ended

Jun. 30, 2018

Acquisitions and Dispositions [Abstract]

Acquisitions and Dispositions

Acquisitions and Dispositions

Acquisitions

Die-Mold

On March 31, 2018, the Company entered into a share purchase agreement pursuant to which the Company acquired all of the outstanding shares of Die-Mold Tool Limited (Die-Mold) for approximately $14.8 million, net of working capital adjustments. The total purchase price consisted of $12.5 million in cash at closing and a contingent consideration arrangement which requires the Company to pay the former owner up to $2.3 million based on EBITDA growth of the acquired company. Die-Mold, based out of Ontario, Canada, is a manufacturer of plastic PEX and other plumbing-related fittings and an integrated designer and manufacturer of plastic injection tooling. The business complements the Company’s existing businesses within the Piping Systems segment.

The fair value of the assets acquired totaled $5.6 million, consisting primarily of property, plant, and equipment of $2.1 million, inventories of $1.9 million, and accounts receivable of $1.6 million. The fair value of the liabilities assumed totaled $0.5 million, consisting primarily of accounts payable of $0.4 million and other current liabilities of $0.1 million. Of the remaining purchase price, $9.7 million was allocated to non-deductible goodwill and intangible assets. The purchase price allocation is provisional as of June 30, 2018 and subject to change upon completion of the final valuation of the long-lived assets, working capital, and contingent consideration during the measurement period.

Heatlink Group

On May 31, 2017, the Company entered into a share purchase agreement pursuant to which the Company acquired all of the outstanding shares of Pexcor Manufacturing Company Inc. and Heatlink Group Inc. (collectively, Heatlink Group) for approximately $17.2 million, net of working capital adjustments. The total purchase price consisted of $16.3 million in cash at closing and a contingent consideration arrangement which requires the Company to pay the former owners up to $2.2 million based on the EBITDA growth of the acquired business. Heatlink Group, based out of Calgary, Alberta, Canada, produces and sells a complete line of products for PEX plumbing and radiant systems. The business complements the Company’s existing businesses within the Piping Systems segment.

The fair value of the assets acquired totaled $9.9 million, consisting primarily of inventories of $4.6 million, accounts receivable of $2.8 million, property, plant, and equipment of $2.0 million, and other current assets of $0.5 million. The fair value of the liabilities assumed totaled $6.0 million, consisting primarily of accounts payable of $3.6 million, other current liabilities of $0.5 million, and deferred taxes of $1.9 million. Of the remaining purchase price, $13.3 million was allocated to non-deductible goodwill and intangible assets. The valuation of the business has been finalized. Changes to the purchase price allocation from the amounts presented in the Company’s 2017 Annual Report on Form 10-K included the valuation of the contingent consideration of $0.9 million and the recognition of a deferred tax liability of $1.9 million that resulted from a basis difference in the long-lived assets acquired. These changes resulted in an increase to goodwill.

Disposition

Mueller-Xingrong

On June 21, 2017, the Company entered into a definitive equity transfer agreement with Jiangsu Xingrong Hi-Tech Co. Ltd. and Jiangsu Baiyang Industries Co. Ltd. (Baiyang), together, the minority partners in Mueller-Xingrong (the Company’s Chinese joint venture), pursuant to which the Company sold its 50.5 percent equity interest in Mueller-Xingrong to Baiyang for approximately $18.3 million. Mueller-Xingrong manufactures engineered copper tube primarily for air-conditioning applications in China and was included in the Piping Systems segment. Mueller-Xingrong reported net sales of $67.3 million and net losses of $9 thousand in 2017. The carrying value of the assets disposed totaled $56.8 million, consisting primarily of accounts receivable, inventories, and long-lived assets. The carrying value of the liabilities disposed (consisting primarily of current debt and accounts payable), noncontrolling interest, and amounts recognized in accumulated other comprehensive income (AOCI) totaled $36.2 million. Since the disposal constituted a complete liquidation of the Company’s investment in a foreign entity, the Company removed from AOCI and recognized a cumulative translation gain of $3.8 million. As a result of the disposal, the Company recognized a net gain on the sale of this business of $1.6 million in the Condensed Consolidated Financial Statements for both the quarter and six months ended July 1, 2017.

XML

Segment Information

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Segment Information

Segment Information

Each of the Company’s reportable segments is composed of certain operating segments that are aggregated primarily by the nature of products offered as follows:

Piping Systems

Piping Systems is composed of the following operating segments: Domestic Piping Systems Group, Great Lakes Copper, Heatlink Group, Die-Mold, European Operations, Trading Group, and Jungwoo-Mueller (the Company’s South Korean joint venture).  The Domestic Piping Systems Group manufactures copper tube, fittings, and line sets.  These products are manufactured in the U.S., sold in the U.S., and exported to markets worldwide.   Outside the U.S., Great Lakes Copper manufactures copper tube and line sets in Canada and sells the products primarily in the U.S. and Canada, Heatlink Group produces a complete line of products for PEX plumbing and radiant systems in Canada and sells these products in Canada and the U.S., Die-Mold manufactures PEX and other plumbing-related fittings and plastic injection tooling in Canada and sells these products in Canada and the U.S., and the European Operations manufacture copper tube in the U.K. which is sold primarily in Europe.  The Trading Group manufactures pipe nipples and imports and resells brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products in the U.S. and Mexico.  Jungwoo-Mueller manufactures copper-based joining products that are sold worldwide.  The Piping Systems segment’s products are sold primarily to plumbing, refrigeration, and air-conditioning wholesalers, hardware wholesalers and co-ops, building product retailers, and air-conditioning original equipment manufacturers (OEMs).

Industrial Metals

Industrial Metals is composed of the following operating segments: Brass Rod & Copper Bar Products, Impacts & Micro Gauge, and Brass Value-Added Products.  These businesses manufacture brass rod, impact extrusions, and forgings, as well as a wide variety of end products including plumbing brass, automotive components, valves, fittings, and gas assemblies.  These products are manufactured in the U.S. and sold primarily to OEMs in the U.S., many of which are in the industrial, transportation, construction, heating, ventilation, and air-conditioning, plumbing, refrigeration, and energy markets.

Climate

Climate is composed of the following operating segments: Refrigeration Products, Fabricated Tube Products, Westermeyer, and Turbotec.  These domestic businesses manufacture and fabricate valves, assemblies, high pressure components, and coaxial heat exchangers primarily for the heating, ventilation, air-conditioning, and refrigeration markets in the U.S.

Summarized segment information is as follows:

	For the Quarter Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	453,183	$	175,891	$	39,172	$	(5,473	)	$	662,773
Cost of goods sold	384,821		154,401		30,688		(6,090		)	563,820
Depreciation and amortization	5,744		1,948		627		687			9,006
Selling, general, and administrative expense	20,599		3,449		2,510		11,870			38,428
(Gain) loss on sale of assets	—		—		—		(409		)	(409		)
Operating income	42,019		16,093		5,347		(11,531		)	51,928
Interest expense										(6,073		)
Other income, net										586
Income before income taxes										$	46,441

	For the Quarter Ended July 1, 2017
(In thousands)	Piping Systems			Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	422,844		$	154,504	$	36,636	$	282		$	614,266
Cost of goods sold	364,261			132,972		27,449		(371		)	524,311
Depreciation and amortization	5,591			1,904		615		485			8,595
Selling, general, and administrative expense	19,831			3,239		2,456		10,773			36,299
(Gain) loss on sale of assets	(1,631		)	—		—		—			(1,631		)
Operating income	34,792			16,389		6,116		(10,605		)	46,692
Interest expense											(6,442		)
Other income, net											342
Income before income taxes											$	40,592

Segment information (continued):

	For the Six Months Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	884,147	$	353,223	$	75,235	$	(9,772	)	$	1,302,833
Cost of goods sold	757,716		303,824		57,974		(10,024		)	1,109,490
Depreciation and amortization	11,622		3,851		1,248		1,741			18,462
Selling, general, and administrative expense	39,841		6,822		5,119		20,703			72,485
(Gain) loss on sale of assets	—		—		—		3,060			3,060
Operating income	74,968		38,726		10,894		(25,252		)	99,336
Interest expense										(11,982		)
Other income, net										1,146
Income before income taxes										$	88,500

	For the Six Months Ended July 1, 2017
(In thousands)	Piping Systems			Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	821,619		$	304,341	$	70,915	$	(4,689	)	$	1,192,186
Cost of goods sold	708,907			257,015		53,013		(6,197		)	1,012,738
Depreciation and amortization	10,933			3,802		1,244		971			16,950
Selling, general, and administrative expense	38,028			6,788		4,932		22,125			71,873
(Gain) loss on sale of assets	(1,631		)	—		—		—			(1,631		)
Operating income	65,382			36,736		11,726		(21,588		)	92,256
Interest expense											(8,973		)
Other income, net											936
Income before income taxes											$	84,219

The following tables represent a disaggregation of revenue from contracts with customers, along with the reportable segment for each category:

	For the Quarter Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	379,165	$	—	$	—	$	379,165
Brass rod and forgings	—		135,921		—		135,921
OEM components, tube & assemblies	7,448		14,597		39,172		61,217
Valves and plumbing specialties	66,570		—		—		66,570
Other	—		25,373		—		25,373
	453,183		175,891		39,172		668,246
Intersegment sales							(5,473		)
Net sales							$	662,773

	For the Quarter Ended July 1, 2017
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	318,433	$	—	$	—	$	318,433
Brass rod and forgings	—		119,783		—		119,783
OEM components, tube & assemblies	47,709		12,887		36,636		97,232
Valves and plumbing specialties	56,702		—		—		56,702
Other	—		21,834		—		21,834
	422,844		154,504		36,636		613,984
Intersegment sales							282
Net sales							$	614,266

Disaggregation of revenue from contracts with customers (continued):

	For the Six Months Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	737,256	$	—	$	—	$	737,256
Brass rod and forgings	—		272,469		—		272,469
OEM components, tube & assemblies	14,510		29,664		75,235		119,409
Valves and plumbing specialties	132,381		—		—		132,381
Other	—		51,090		—		51,090
	884,147		353,223		75,235		1,312,605
Intersegment sales							(9,772		)
Net sales							$	1,302,833

	For the Six Months Ended July 1, 2017
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	626,799	$	—	$	—	$	626,799
Brass rod and forgings	—		233,963		—		233,963
OEM components, tube & assemblies	79,680		26,102		70,915		176,697
Valves and plumbing specialties	115,140		—		—		115,140
Other	—		44,276		—		44,276
	821,619		304,341		70,915		1,196,875
Intersegment sales							(4,689		)
Net sales							$	1,192,186

XML

Inventories

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

(In thousands)	June 30, 2018			December 30, 2017
Raw materials and supplies	$	75,307		$	108,397
Work-in-process	57,472			46,158
Finished goods	169,047			180,143
Valuation reserves	(7,286		)	(6,797		)
Inventories	$	294,540		$	327,901

The decrease in inventories was primarily driven by the use of excess inventory built at the end of 2017 due to a casting outage in our brass rod mill that impaired our ability to melt scrap returns.

XML

Financial Instruments

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Financial Instruments

Financial Instruments

Derivative Instruments and Hedging Activities

The Company’s earnings and cash flows are subject to fluctuations due to changes in commodity prices, foreign currency exchange rates, and interest rates.  The Company uses derivative instruments such as commodity futures contracts, foreign currency forward contracts, and interest rate swaps to manage these exposures.

All derivatives are recognized in the Condensed Consolidated Balance Sheets at their fair value.  On the date the derivative contract is entered into, it is either a) designated as a hedge of (i) a forecasted transaction or the variability of cash flow to be paid (cash flow hedge) or (ii) the fair value of a recognized asset or liability (fair value hedge), or b) not designated in a hedge accounting relationship, even though the derivative contract was executed to mitigate an economic exposure (economic hedge), as the Company does not enter into derivative contracts for trading purposes.  Changes in the fair value of a derivative that is qualified, designated, and highly effective as a cash flow hedge are recorded in stockholders’ equity within AOCI, to the extent effective, until they are reclassified to earnings in the same period or periods during which the hedged transaction affects earnings.  Changes in the fair value of a derivative that is qualified, designated, and highly effective as a fair value hedge, along with the gain or loss on the hedged recognized asset or liability that is attributable to the hedged risk, are recorded in current earnings.  Changes in the fair value of undesignated derivatives executed as economic hedges and the ineffective portion of designated derivatives are reported in current earnings.

The Company documents all relationships between derivative instruments and hedged items, as well as the risk-management objective and strategy for undertaking various hedge transactions.  This process includes linking all derivative instruments that are designated as fair value hedges to specific assets and liabilities in the Condensed Consolidated Balance Sheets and linking cash flow hedges to specific forecasted transactions or variability of cash flow.

The Company also assesses, both at the hedge’s inception and on an ongoing basis, whether the designated derivative instruments that are used in hedging transactions are highly effective in offsetting changes in cash flows or fair values of hedged items.  When a derivative instrument is determined not to be highly effective as a hedge or the underlying hedged transaction is no longer probable of occurring, hedge accounting is discontinued prospectively in accordance with the derecognition criteria for hedge accounting.

Commodity Futures Contracts

Copper and brass represent the largest component of the Company’s variable costs of production.  The cost of these materials is subject to global market fluctuations caused by factors beyond the Company’s control.  The Company occasionally enters into forward fixed-price arrangements with certain customers; the risk of these arrangements is generally managed with commodity futures contracts.  These futures contracts have been designated as cash flow hedges.  

At June 30, 2018, the Company held open futures contracts to purchase approximately $48.2 million of copper over the next 15 months related to fixed price sales orders.  The fair value of those futures contracts was a $639 thousandnet loss position, which was determined by obtaining quoted market prices (level 1 within the fair value hierarchy).  In the next 12 months, the Company will reclassify into earnings realized gains or losses relating to cash flow hedges.  At June 30, 2018, this amount was approximately $215 thousand of deferred net losses, net of tax.

The Company may also enter into futures contracts to protect the value of inventory against market fluctuations.  At June 30, 2018, the Company held open futures contracts to sell approximately $0.2 million of copper over the next three months related to copper inventory.  The fair value of those futures contracts was an $8 thousandnet gain position, which was determined by obtaining quoted market prices (level 1 within the fair value hierarchy).

The Company presents its derivative assets and liabilities in the Condensed Consolidated Balance Sheets on a net basis by counterparty.  The following table summarizes the location and fair value of the derivative instruments and disaggregates the net derivative assets and liabilities into gross components on a contract-by-contract basis:

	Asset Derivatives						Liability Derivatives
		Fair Value						Fair Value
(In thousands)	Balance Sheet Location	June 30, 2018		December 30, 2017			Balance Sheet Location	June 30, 2018			December 30, 2017
Commodity contracts - gains	Other current assets	$	8	$	1,014		Other current liabilities	$	148		$	55
Commodity contracts - losses	Other current assets	—		(5		)	Other current liabilities	(787		)	(3,210		)
Total derivatives (1)		$	8	$	1,009			$	(639	)	$	(3,155	)

⁽¹⁾Does not include the impact of cash collateral provided to counterparties.

The following tables summarize the effects of derivative instruments on the Company’s Condensed Consolidated Statements of Income:

		For the Quarter Ended				For the Six Months Ended
(In thousands)	Location	June 30, 2018		July 1, 2017		June 30, 2018			July 1, 2017
Fair value hedges:
Gain on commodity contracts (qualifying)	Cost of goods sold	$	—	$	—	$	391		$	—
Loss on hedged item - inventory	Cost of goods sold	—		—		(385		)	—
Undesignated derivatives:
Gain (loss) on commodity contracts (nonqualifying)	Cost of goods sold	2,301		672		8,427			(423		)

The following tables summarize amounts recognized in and reclassified from AOCI during the period:

	For the Quarter Ended June 30, 2018
(In thousands)	Gain (Loss) Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Loss Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	52		Cost of goods sold	$	17
Other	(34		)	Other	—
Total	$	18		Total	$	17

	For the Quarter Ended July 1, 2017
(In thousands)	(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Loss Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	(250	)	Cost of goods sold	$	324
Interest rate swap	—			Interest expense	149
Other	38			Other	—
Total	$	(212	)	Total	$	473

	For the Six Months Ended June 30, 2018
(In thousands)	Loss Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Gain Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	(743	)	Cost of goods sold	$	(275	)
Other	(9		)	Other	—
Total	$	(752	)	Total	$	(275	)

	For the Six Months Ended July 1, 2017
(In thousands)	(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Loss Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	(813	)	Cost of goods sold	$	676
Interest rate swap	—			Interest expense	298
Other	156			Other	—
Total	$	(657	)	Total	$	974

The Company enters into futures and forward contracts that closely match the terms of the underlying transactions.  As a result, the ineffective portion of the qualifying open hedge contracts through June 30, 2018 was not material to the Condensed Consolidated Statements of Income.

The Company primarily enters into International Swaps and Derivatives Association master netting agreements with major financial institutions that permit the net settlement of amounts owed under their respective derivative contracts.  Under these master netting agreements, net settlement generally permits the Company or the counterparty to determine the net amount payable for contracts due on the same date and in the same currency for similar types of derivative transactions.  The master netting agreements generally also provide for net settlement of all outstanding contracts with a counterparty in the case of an event of default or a termination event.  The Company does not offset fair value amounts for derivative instruments and fair value amounts recognized for the right to reclaim cash collateral.  At June 30, 2018 and December 30, 2017, the Company had recorded restricted cash in other current assets of $2.1 million and $5.3 million, respectively, as collateral related to open derivative contracts under the master netting arrangements.

Long-Term Debt

The fair value of long-term debt at June 30, 2018 approximates the carrying value on that date.  The estimated fair values were determined based on quoted market prices and the current rates offered for debt with similar terms and maturities.  The fair value of long-term debt is classified as level 2 within the fair value hierarchy.  This classification is defined as a fair value determined using market-based inputs other than quoted prices that are observable for the liability, either directly or indirectly.

XML

Investment in Unconsolidated Affiliates

6 Months Ended

Jun. 30, 2018

Equity Method Investments and Joint Ventures [Abstract]

Investment in Unconsolidated Affiliates

Investment in Unconsolidated Affiliates

Tecumseh

The Company owns a 50 percent interest in an unconsolidated affiliate that acquired Tecumseh Products Company LLC (Tecumseh).  The Company also owns a 50 percent interest in a second unconsolidated affiliate that provides financing to Tecumseh.  These investments are recorded using the equity method of accounting, as the Company can exercise significant influence but does not own a majority equity interest or otherwise control the respective entities.  Under the equity method of accounting, these investments are stated at initial cost and are adjusted for subsequent additional investments and the Company’s proportionate share of earnings or losses and distributions.

The Company records its proportionate share of the investees’ income or loss, net of foreign taxes, one quarter in arrears as income (loss) from unconsolidated affiliates, net of foreign tax, in the Condensed Consolidated Statements of Income and its proportionate share of the investees’ other comprehensive income (loss), net of income taxes, in the Condensed Consolidated Statements of Comprehensive Income. The U.S. tax effect of the Company’s proportionate share of Tecumseh’s income or loss is recorded in income tax expense in the Condensed Consolidated Statements of Income. In general, the equity investment in unconsolidated affiliates is equal to the current equity investment plus the investees’ undistributed earnings. 

The following tables present summarized financial information derived from the Company’s equity method investees’ combined consolidated financial statements, which are prepared in accordance with U.S. GAAP.

(In thousands)	June 30, 2018		December 30, 2017
Current assets	$	236,856	$	246,127
Noncurrent assets	127,783		139,200
Current liabilities	172,658		174,710
Noncurrent liabilities	58,214		58,334

	For the Quarter Ended					For the Six Months Ended
(In thousands)	June 30, 2018		July 1, 2017			June 30, 2018			July 1, 2017
Net sales	$	126,205	$	132,600		$	250,305		$	258,900
Gross profit	11,749		19,600			23,849			35,200
Net income (loss)	471		(217		)	(17,860		)	(2,704		)

The Company’s loss from unconsolidated affiliates, net of foreign tax, for the quarter ended June 30, 2018 included net losses of $6.7 million, offset by a gain of $7.0 million related to a settlement with the Brazilian Federal Revenue Agency for Tecumseh.

The Company’s loss from unconsolidated affiliates, net of foreign tax, for the six months ended June 30, 2018 included net losses of $12.9 million and charges of $3.0 million related to certain labor claim contingencies, offset by a gain of $7.0 million related to a settlement with the Brazilian Federal Revenue Agency for Tecumseh.

Bahrain

On December 30, 2015, the Company entered into a joint venture agreement with Cayan Ventures and Bahrain Mumtalakat Holding Company to build a copper tube mill in Bahrain. The business will operate and brand its products under the Mueller Industries family of brands. The Company has invested approximately $4.5 million of cash to date and will be the technical and marketing lead in return for 40 percent ownership in the joint venture.

The Company’s loss from unconsolidated affiliates, net of foreign tax, for the quarter and six months ended June 30, 2018 included net losses of $0.5 million and $1.6 million, respectively, for Bahrain.

XML

Benefit Plans

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

Benefit Plans

Benefit Plans

The Company sponsors several qualified and nonqualified pension plans and other postretirement benefit plans for certain of its employees.  The components of net periodic benefit cost (income) are as follows:

	For the Quarter Ended						For the Six Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Pension benefits:
Service cost	$	20		$	36		$	44		$	71
Interest cost	1,465			1,653			2,958			3,318
Expected return on plan assets	(2,290		)	(2,186		)	(4,579		)	(4,368		)
Amortization of net loss	235			516			584			1,072
Net periodic benefit (income) cost	$	(570	)	$	19		$	(993	)	$	93
Other benefits:
Service cost	$	56		$	53		$	116		$	109
Interest cost	146			146			294			295
Amortization of prior service credit	(225		)	(226		)	(451		)	(451		)
Amortization of net loss (gain)	11			(15		)	29			(20		)
Net periodic benefit income	$	(12	)	$	(42	)	$	(12	)	$	(67	)

The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income.

XML

Commitments and Contingencies

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

The Company is involved in certain litigation as a result of claims that arose in the ordinary course of business, which management believes will not have a material adverse effect on the Company’s financial position, results of operations, or cash flows.  The Company may also realize the benefit of certain legal claims and litigation in the future; these gain contingencies are not recognized in the Condensed Consolidated Financial Statements.

Environmental

Non-operating Properties

Southeast Kansas Sites

The Kansas Department of Health and Environment (KDHE) has contacted the Company regarding environmental contamination at three former smelter sites in Kansas (Altoona, East La Harpe, and Lanyon).  The Company is not a successor to the companies that operated these smelter sites, but is exploring possible settlement with KDHE and other potentially responsible parties (PRP) in order to avoid litigation.  Another PRP conducted a site investigation of the Altoona site under a consent decree with KDHE and submitted a removal site evaluation report recommending a remedy.  The remedial design plan, which covers both on-site and certain off-site cleanup costs, was approved by the KDHE in 2016.  At the East La Harpe site, the Company and two other PRPs conducted a site study evaluation under KDHE supervision and prepared a site cleanup plan approved by KDHE.  In 2016, the corporate parent of a third party that the Company understands may owe indemnification obligations to one of the other PRPs in connection with the East La Harpe site filed for protection under Chapter 11 of the U.S. Bankruptcy Code.  KDHE has extended the deadline for the PRPs to develop a repository design plan to allow for wetlands permitting to take place.  With respect to the Lanyon Site, in 2016, the Company received a general notice letter from the United States Environmental Protection Agency (EPA) asserting that the Company is a PRP, which the Company has denied.  The Company’s reserve for its proportionate share of the remediation costs associated with the Southeast Kansas sites is $5.6 million.

Shasta Area Mine Sites

Mining Remedial Recovery Company (MRRC), a wholly owned subsidiary, owns certain inactive mines in Shasta County, California.  MRRC has continued a program, begun in the late 1980s, of implementing various remedial measures, including sealing mine portals with concrete plugs in portals that were discharging water.  The sealing program achieved significant reductions in the metal load in discharges from these adits; however, additional reductions are required pursuant to an order issued by the California Regional Water Quality Control Board (QCB).  In response to a 1996 QCB Order, MRRC completed a feasibility study in 1997 describing measures designed to mitigate the effects of acid rock drainage.  In December 1998, the QCB modified the 1996 order extending MRRC’s time to comply with water quality standards.  In September 2002, the QCB adopted a new order requiring MRRC to adopt Best Management Practices (BMP) to control discharges of acid mine drainage, and again extended the time to comply with water quality standards until September 2007.  During that time, implementation of BMP further reduced impacts of acid rock drainage; however, full compliance has not been achieved.  The QCB is presently renewing MRRC’s discharge permit and will concurrently issue a new order.  It is expected that the new 10-year permit will include an order requiring continued implementation of BMP through 2025 to address residual discharges of acid rock drainage.  The Company currently estimates that it will spend between approximately $12.8 million and $17.6 million for remediation at these sites over the next 30 years.

Lead Refinery Site

U.S.S. Lead Refinery, Inc. (Lead Refinery), a non-operating wholly owned subsidiary of MRRC, has conducted corrective action and interim remedial activities (collectively, Site Activities) at Lead Refinery’s East Chicago, Indiana site pursuant to the Resource Conservation and Recovery Act since December 1996.  Although the Site Activities have been substantially concluded, Lead Refinery is required to perform monitoring and maintenance-related activities pursuant to a post-closure permit issued by the Indiana Department of Environmental Management effective as of March 2, 2013.  Approximate costs to comply with the post-closure permit, including associated general and administrative costs, are estimated at between $1.8 million and $3.0 million over the next 19 years.

On April 9, 2009, pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the U.S. Environmental Protection Agency (EPA) added the Lead Refinery site and surrounding properties to the National Priorities List (NPL).  On July 17, 2009, Lead Refinery received a written notice from the EPA indicating that it may be a PRP under CERCLA due to the release or threat of release of hazardous substances including lead into properties surrounding the Lead Refinery NPL site.  The EPA identified two other PRPs in connection with that matter.  In November 2012, the EPA adopted a remedy for the surrounding properties and in September 2014, the EPA announced that it had entered into a settlement with the two other PRPs whereby they will pay approximately $26.0 million to fund the cleanup of approximately 300 properties surrounding the Lead Refinery NPL site (zones 1 and 3 of operable unit 1) and perform certain remedial action tasks.

On November 8, 2016, the Company, its subsidiary Arava Natural Resources Company, Inc. (Arava), and Arava’s subsidiary MRRC each received general notice letters from the EPA asserting that they may be PRPs in connection with the Lead Refinery NPL site.  The Company, Arava, and MRRC have denied liability for any remedial action and response costs associated with the Lead Refinery NPL site.  In June 2017, the EPA requested that Lead Refinery conduct, and the Company fund, a remedial investigation and feasibility study of operable unit 2 of the Lead Refinery NPL site pursuant to a proposed administrative settlement agreement and order on consent. The Company and Lead Refinery entered into that agreement in September 2017. The Company has made a capital contribution to Lead Refinery to conduct the remedial investigation and feasibility study with respect to operable unit 2 and has provided financial assurance in the amount of $1.0 million. The EPA has also asserted its position that Mueller is a responsible party for the Lead Refinery NPL site, and accordingly is responsible for a share of remedial action and response costs at the site and in the adjacent residential area.

In January 2018, the EPA issued two unilateral administrative orders (UAOs) directing the Company, Lead Refinery, and four other PRPs to conduct soil and interior remediation of certain residences at the Lead Refinery NPL site (zones 2 and 3 of operable unit 1). The Company and Lead Refinery have reached agreement with the four other PRPs to implement these two UAOs, with the Company agreeing to pay, on an interim basis, (i) an estimated $4.5 million (subject to potential change through a future reallocation process) of the approximately $25.0 million the PRPs currently estimate it will cost to implement the UAOs, which estimate is subject to change, and (ii) $2.0 million relating to past costs incurred by other PRPs for work conducted at the site.  These amounts are included in the Company’s reserve for environmental liabilities as of December 30, 2017. The Company disputes that it was properly named in the UAOs, and has reserved its rights to petition the EPA for reimbursement of any costs incurred to comply with the UAOs upon the completion of the work required therein.  In October 2017, a group of private plaintiffs sued the Company, Arava, MRRC, and Lead Refinery, along with other defendants, in a private tort action relating to the site; the Company, Arava, and MRRC were voluntarily dismissed from that litigation without prejudice in March 2018.  At this juncture, the Company is unable to determine the likelihood of a material adverse outcome or the amount or range of a potential loss in excess of the current reserve with respect to any remedial action or litigation relating to the Lead Refinery NPL site, either at Lead Refinery’s former operating site (operable unit 2) or the adjacent residential area (operable unit 1).

Bonita Peak Mining District

Following an August 2015 spill from the Gold King Mine into the Animas River near Silverton, Colorado, the EPA listed the Bonita Peak Mining District on the NPL.  Said listing was finalized in September 2016.  The Bonita Peak Mining District encompasses 48 mining sites within the Animas River watershed, including the Sunnyside Mine, the American Tunnel, and the Sunbank Group.  On or about July 25, 2017, Washington Mining Company (Washington Mining) (a wholly-owned subsidiary of the Company’s wholly-owned subsidiary, Arava), received a general notice letter from the EPA stating that Washington Mining may be a PRP under CERCLA in connection with the Bonita Peak Mining District site and therefore responsible for the remediation of certain portions of the site, along with related costs incurred by the EPA.  Shortly thereafter, the Company received a substantively identical letter asserting that it may be a PRP at the Site and similarly responsible for the cleanup of certain portions of the site.  The general notice letters identify one other PRP at the site, and do not require specific action by Washington Mining or the Company at this time.  At this juncture, the Company is unable to determine the likelihood of a materially adverse outcome or the amount or range of a potential loss with respect to any remedial action related to the Bonita Peak Mining District NPL site.

Operating Properties

Mueller Copper Tube Products, Inc.

In 1999, Mueller Copper Tube Products, Inc. (MCTP), a wholly owned subsidiary, commenced a cleanup and remediation of soil and groundwater at its Wynne, Arkansas plant to remove trichloroethylene, a cleaning solvent formerly used by MCTP.  On August 30, 2000, MCTP received approval of its Final Comprehensive Investigation Report and Storm Water Drainage Investigation Report addressing the treatment of soils and groundwater from the Arkansas Department of Environmental Quality (ADEQ).  The Company established a reserve for this project in connection with the acquisition of MCTP in 1998.  Effective November 17, 2008, MCTP entered into a Settlement Agreement and Administrative Order by Consent to submit a Supplemental Investigation Work Plan (SIWP) and subsequent Final Remediation Work Plan (RWP) for the site.  By letter dated January 20, 2010, ADEQ approved the SIWP as submitted, with changes acceptable to the Company.  On December 16, 2011, MCTP entered into an amended Administrative Order by Consent to prepare and implement a revised RWP regarding final remediation for the Site.  The remediation system was activated in February 2014.  Costs to implement the work plans, including associated general and administrative costs, are estimated to approximate $0.8 million to $1.2 million over the next eight years.

United States Department of Commerce Antidumping Review

On December 24, 2008, the Department of Commerce (DOC) initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico for the November 1, 2007  through October 31, 2008 period of review.  The DOC selected Mueller Comercial as a respondent in the review.  On April 19, 2010, the DOC published the final results of the review and assigned Mueller Comercial an antidumping duty rate of 48.33 percent.  On May 25, 2010, the Company appealed the final results to the U.S. Court of International Trade (CIT).  On December 16, 2011, the CIT issued a decision remanding the Department’s final results.  While the matter was still pending, the Company and the United States reached an agreement to settle the appeal.  Subject to the conditions of the agreement, the Company anticipated that certain of its subsidiaries would incur antidumping duties on subject imports made during the period of review and, as such, established a reserve for this matter.  After the lapse of the statutory period of time during which U.S. Customs and Border Protection (CBP) was required, but failed, to liquidate the entries at the settled rate, the Company released the reserve.  Between October 30, 2015 and November 27, 2015, CBP sent a series of invoices to Southland Pipe Nipples Co., Inc. (Southland), requesting payment of approximately $3.0 million in duties and interest in connection with 795 import entries made during the November 1, 2007 through October 31, 2008 period.  On January 26, 2016 and January 27, 2016, Southland filed protests with CBP in connection with these invoices, noting that CBP’s asserted claims were not made in accordance with applicable law, including statutory provisions governing deemed liquidation. The Company believes in the merits of the legal objections raised in Southland’s protests, and CBP’s response to Southland’s protests is currently pending. Given the procedural posture and issues raised by this legal dispute, the Company cannot estimate the amount of potential duty liability, if any, that may result from CBP’s asserted claims.

Equal Employment Opportunity Commission Matter

On October 5, 2016, the Company received a demand letter from the Los Angeles District Office of the United States Equal Employment Opportunity Commission (EEOC).  The EEOC alleged that between May 2011 and April 2015, various Company employees were terminated in violation of the Americans with Disabilities Act (ADA), and that certain of the Company’s employee leave and attendance policies were discriminatory in nature.  Thereafter, the Company, in consultation with its liability insurers, entered into conciliation and mediation efforts with the EEOC for purposes of resolving the claims. At the conclusion of those efforts, the Company and the EEOC reached agreement on a consensual resolution of the EEOC’s claims, which includes both monetary and equitable relief.

On June 28, 2018, the EEOC filed a complaint against the Company on behalf of a group of unidentified claimants in the United States District Court for the Central District of California alleging that the Company engaged in unlawful employment practices in violation of the ADA. On July 13, 2018, the District Court approved a Consent Decree between the Company and the EEOC to resolve the EEOC’s claims. The Consent Decree, the term of which shall be two and a half years, provides that the Company shall pay up to $1.0 million in monetary relief to fund individual claims for discrimination under the ADA as approved by the EEOC. That amount is fully within the limits of the Company’s applicable insurance coverage. Pursuant to the Consent Decree, the Company shall also take a series of proactive measures to cultivate a work environment free from unlawful discrimination. Those measures include, among others, assistance with the identification of potential claimants, employee, supervisory and managerial training regarding employee rights under the ADA, revised practices and procedures concerning reasonable workplace accommodations as required by the ADA, and related reporting and recordkeeping.

Guarantees

Guarantees, in the form of letters of credit, are issued by the Company generally to assure the payment of insurance deductibles and certain retiree health benefits.  The terms of the guarantees are generally one year but are renewable annually as required.  These letters are primarily backed by the Company’s revolving credit facility.  The maximum payments that the Company could be required to make under its guarantees at June 30, 2018 were $8.7 million.

XML

Income Taxes

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company’s effective tax rate for the second quarter of 2018 was 27 percent compared with 31 percent for the same period last year.  The items impacting the effective tax rate for the second quarter of 2018 were primarily attributable to the provision for state income taxes, net of the federal benefit, of $1.4 million and miscellaneous items totaling $1.3 million.

The Company’s effective tax rate for the second quarter of 2017 was 31 percent.  The items impacting the effective tax rate for the second quarter of 2017 were primarily attributable to reductions for the U.S. production activities deduction of $0.9 million and the effect of foreign tax rates lower than statutory tax rates of $1.6 million. These items were partially offset by the provision for state income taxes, net of the federal benefit, of $0.8 million and miscellaneous items totaling $0.2 million.

The Company’s effective tax rate for the first half of 2018 was 22 percent compared with 29 percent for the same period last year. The difference between the Company’s effective tax rate and the current U.S. statutory rate of 21 percent is primarily related to the reduction for the impact of investments in unconsolidated affiliates of $3.7 million. This was offset by the provision for state income taxes, net of the federal benefit, of $2.6 million, the inclusion for global intangible low-taxed income of $1.0 million, and miscellaneous items totaling $1.2 million.

The Company records the U.S. tax effects of its investment in Tecumseh, an unconsolidated affiliate, in income tax expense in the Condensed Consolidated Statements of Income.

The Company’s effective tax rate for the first half of 2017 was 29 percent as compared with the U.S. statutory rate of 35 percent. The items impacting the effective tax rate for the first half of 2017 were primarily attributable to reductions for the U.S. production activities deduction of $1.8 million, the effect of foreign tax rates lower than statutory tax rates of $3.0 million, the tax benefit of equity compensation deductions of $1.7 million, and the impact of investments in unconsolidated affiliates of $0.8 million. These items were partially offset by the provision for state income taxes, net of the federal benefit, of $1.7 million and miscellaneous items totaling $0.7 million.

The Tax Cuts and Jobs Act (the Act) was enacted on December 22, 2017. The Act reduces the U.S. federal corporate income tax rate from 35 percent to 21 percent, requires companies to pay a one-time transition tax on the accumulated earnings of certain foreign subsidiaries, and creates new taxes on certain foreign-sourced earnings. The Company is applying the guidance in SAB 118 in accounting for the enactment date effects of the Act. At December 30, 2017, the Company made a reasonable estimate of the one-time transition tax on accumulated foreign earnings as well as the impact of the Act on its existing deferred tax balances. As discussed below, the Company has not completed its accounting for the tax effects of the Act as of June 30, 2018.

The one-time transition tax is based on the Company’s total post-1986 earnings and profits (E&P) for which the accrual of U.S. income taxes had previously been deferred. The Company recorded a provisional amount for its one-time transition tax liability of $12.9 million at December 30, 2017, and has not adjusted this amount as of June 30, 2018. The Company has not yet completed its calculation of the total post-1986 foreign E&P for these foreign subsidiaries. Further, the transition tax is impacted in part by the amount of those earnings held in cash and other specified assets. Accordingly, the Company’s estimate of the one-time transition tax may change when it finalizes the calculation of post-1986 foreign E&P previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets.

At December 30, 2017, the Company remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21 percent. A provisional tax benefit of $12.1 million was recorded, and no adjustment was recorded to this estimate in the current quarter. The Company is still analyzing certain aspects of the Act and refining its calculations, which could potentially affect the measurement of these balances.

The global intangible low-taxed income (GILTI) provisions of the Act impose a tax on the GILTI earned by certain foreign subsidiaries. The FASB Staff Q&A, Topic 740, No. 5, Accounting for Global Intangible Low-Taxed Income, states that an entity can make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or provide for the tax expense related to GILTI in the year the tax is incurred. Given the complexity of the GILTI provisions, the Company is still evaluating the effects of these provisions and has not yet determined the new accounting policy. At June 30, 2018, because the Company is still assessing the GILTI provisions and future income subject to the GILTI provisions, it has included an estimate of the tax on GILTI related to current-year operations in the forecasted effective tax rate and has not provided additional GILTI on deferred items.

The Company files a consolidated U.S. federal income tax return and numerous consolidated and separate-company income tax returns in many state, local, and foreign jurisdictions.  The statute of limitations is open for the Company’s federal tax return and most state income tax returns for 2014 and all subsequent years and is open for certain state and foreign returns for earlier tax years due to ongoing audits and differing statute periods.  While the Company believes that it is adequately reserved for possible future audit adjustments, the final resolution of these examinations cannot be determined with certainty and could result in final settlements that differ from current estimates.

XML

Accumulated Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)

AOCI includes certain foreign currency translation adjustments from those subsidiaries not using the U.S. dollar as their functional currency, net deferred gains and losses on certain derivative instruments accounted for as cash flow hedges, adjustments to pension and OPEB liabilities, unrealized gains and losses on marketable securities classified as available-for-sale, and other comprehensive income attributable to unconsolidated affiliates.

The following table provides changes in AOCI by component, net of taxes and noncontrolling interests (amounts in parentheses indicate debits to AOCI):

	For the Six Months Ended June 30, 2018
(In thousands)	Cumulative Translation Adjustment			Unrealized Gain (Loss) on Derivatives			Pension/OPEB Liability Adjustment			Unrealized Gain on Equity Securities		Attributable to Unconsol. Affiliates			Total
Balance as of December 30, 2017	$	(38,163	)	$	847		$	(20,610	)	$	—	$	6,870		$	(51,056	)
Other comprehensive (loss) income before reclassifications	(6,793		)	(752		)	353			—		(280		)	(7,472		)
Amounts reclassified from AOCI	—			(275		)	146			—		—			(129		)
Net current-period other comprehensive (loss) income	(6,793		)	(1,027		)	499			—		(280		)	(7,601		)
Reclassification of stranded effects of the Act	—			112			(1,018		)	—		1,462			556
Balance as of June 30, 2018	$	(44,956	)	$	(68	)	$	(21,129	)	$	—	$	8,052		$	(58,101	)

	For the Six Months Ended July 1, 2017
(In thousands)	Cumulative Translation Adjustment			Unrealized (Loss) Gain on Derivatives			Pension/OPEB Liability Adjustment			Unrealized Gain (Loss) on Equity Securities			Attributable to Unconsol. Affiliates			Total
Balance as of December 31, 2016	$	(49,965	)	$	(300	)	$	(23,046	)	$	380		$	5,975		$	(66,956	)
Other comprehensive income (loss) before reclassifications	11,058			(657		)	(856		)	(1		)	(351		)	9,193
Amounts reclassified from AOCI	(3,777		)	974			491			(379		)	—			(2,691		)
Net current-period other comprehensive income (loss)	7,281			317			(365		)	(380		)	(351		)	6,502
Balance as of July 1, 2017	$	(42,684	)	$	17		$	(23,411	)	$	—		$	5,624		$	(60,454	)

Reclassification adjustments out of AOCI were as follows:

	Amount reclassified from AOCI
	For the Quarter Ended						For the Six Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017			Affected line item
Unrealized losses (gains) on derivatives:
Commodity contracts	$	19		$	602		$	(346	)	$	1,024		Cost of goods sold
Interest rate swap	—			232			—			464			Interest expense
	(2		)	(361		)	71			(514		)	Income tax (benefit) expense
	$	17		$	473		$	(275	)	$	974		Net of tax and noncontrolling interests
Amortization of net loss and prior service cost on employee benefit plans	$	21		$	275		$	162		$	601		Other income, net
	6			(46		)	(16		)	(110		)	Income tax expense (benefit)
	$	27		$	229		$	146		$	491		Net of tax and noncontrolling interests
Sale of available-for-sale securities	$	—		$	(357	)	$	—		$	(611	)	Other income, net
	$	—		$	138		$	—		$	232		Income tax expense
	$	—		$	(219	)	$	—		$	(379	)	Net of tax and noncontrolling interests
Gain recognized upon sale of business	$	—		$	(3,777	)	$	—		$	(3,777	)	Selling, general, and administrative expense
	$	—		$	—		$	—		$	—		Income tax expense
	$	—		$	(3,777	)	$	—		$	(3,777	)	Net of tax and noncontrolling interests

XML

Noncontrolling Interests

6 Months Ended

Jun. 30, 2018

Noncontrolling Interest [Abstract]

Noncontrolling Interests

Noncontrolling Interests

(In thousands)	Noncontrolling Interests
Balance as of December 30, 2017	$	13,917
Dividends paid to noncontrolling interests	(592		)
Net income attributable to noncontrolling interests	916
Other comprehensive income attributable to noncontrolling interests, net of tax:
Foreign currency translation	147
Balance as of June 30, 2018	$	14,388

XML

Subsequent Events

6 Months Ended

Jun. 30, 2018

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

On July 2, 2018, the Company entered into a stock purchase agreement pursuant to which the Company acquired all of the outstanding capital stock of ATCO Rubber Products, Inc. (ATCO) for approximately $157.7 million in cash, net of working capital adjustments. The transaction also included a contingent consideration arrangement which requires the Company to pay the former owner up to $12.0 million based on EBITDA growth of the acquired company. ATCO is an industry leader in the manufacturing and distribution of insulated HVAC flexible duct systems and will support the Company’s strategy to grow its Climate Products businesses to become a more valuable resource to its HVAC customers. The acquired business will be reported in the Company’s Climate segment.

The historical carrying value of the assets acquired totaled $107.2 million, consisting primarily of property, plant, and equipment of $52.1 million, inventories of $32.4 million, accounts receivable of $21.9 million, other current assets of $0.6 million, and other assets of $0.2 million. The historical carrying value of the liabilities assumed totaled $18.1 million, consisting primarily of accounts payable of $8.1 million, other current liabilities of $7.4 million, and other liabilities of $2.6 million. The Company will adjust these assets and liabilities to their fair value as of the closing date in accordance with Accounting Standards Codification 805, Business Combinations.

ATCO had revenues of approximately $166.0 million in its fiscal year ending December 31, 2017.

The Company’s Credit Agreement provides for an unsecured $350.0 million revolving credit facility which matures on December 6, 2021. Total borrowings under the Credit Agreement were $315.0 million as of June 30, 2018, which included $150.0 million borrowed on June 29, 2018 to fund the ATCO acquisition. On July 6, 2018 and July 16, 2018, the Company made payments of $50.0 million and $25.0 million, respectively, to reduce the debt outstanding under its Credit Agreement.

XML

Recent Accounting Standards (Policies)

6 Months Ended

Jun. 30, 2018

Accounting Changes and Error Corrections [Abstract]

Recently Issued Accounting Standards

Adopted

In February 2018, the Financial Accounting Standards Board (FASB) issued ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (AOCI). The ASU permits entities to reclassify tax effects stranded in AOCI as a result of tax reform to retained earnings. The guidance is effective for the Company in interim and annual periods beginning in 2019. Early adoption is permitted and can be applied retrospectively or in the period of adoption. The Company early adopted the ASU during the first quarter of 2018, which resulted in a reclassification of $556 thousand from AOCI to retained earnings during the quarter.

In March 2017, the FASB issued ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The ASU requires employers that sponsor defined benefit pension and/or other postretirement benefit plans to present the service cost component of net periodic benefit cost in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period and other components of net periodic benefits cost separately from the line item(s) that includes the service cost and outside of any subtotal of operating income. The Company adopted the ASU during the first quarter of 2018 using a retrospective approach for each period presented, and elected to use the practical expedient that allows the Company to use the amounts previously presented in its Benefit Plans disclosure as the estimation basis for applying the retrospective presentation requirements. Prior to the adoption of the ASU, net periodic benefit cost (income) was reported within selling, general, and administrative expense in the Condensed Consolidated Statements of Income. The prior periods have been revised to conform to the current period presentation, resulting in the reclassification of $111 thousand and $154 thousand of net periodic benefit income from operating income to other income, net for the quarter and six months ended July 1, 2017, respectively.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The ASU provides guidance to assist entities in evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The updated guidance requires prospective adoption. Early adoption is permitted. The Company early adopted the ASU during the first quarter of 2018 and the adoption had no impact on its Condensed Consolidated Financial Statements.

In December 2016, the FASB issued ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers. The ASU provides correction or improvement to the guidance previously issued in ASU 2014-09, Revenue from Contracts with Customers (Topic 606). Under the ASU, an entity will recognize revenue to depict the transfer of promised goods or services to customers at an amount that reflects the consideration that it expects to receive in exchange for the goods or services. It also requires more detailed disclosures to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The ASU requires revenue to be recognized over time (i.e., throughout the production process) rather than at a point in time (generally upon shipment to the customer) if performance does not create an asset with an alternative use to the entity and the entity has an enforceable right to payment for performance completed to date.  

The Company generates revenue through the manufacture and sale of copper tube and fittings; line sets; brass and copper alloy rod, bar, and shapes; aluminum impact extrusions; plastic fittings and valves; refrigeration valves and fittings; fabricated tubular products; and steel nipples. The Company also resells imported brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products.

Given the nature of the Company’s business and product offerings, sales transactions with customers are generally comprised of a single performance obligation that involves delivery of the products identified in the contracts with customers.  Performance obligations are generally satisfied at the point in time of shipment and payment is generally due within sixty days. Variable consideration is estimated for future rebates on certain product lines and product returns. The Company records variable consideration as an adjustment to the transaction price in the period it is incurred. Since variable consideration is settled within a short period of time, the time value of money is not significant.

The Company also evaluated specific contract terms, primarily within the Industrial Metals and Climate segments, related to the production of customized products and payment rights and determined that there are no significant changes to the timing or nature of revenue recognition under the ASU. As part of the overall evaluation of the standard, the Company has assessed and implemented necessary changes to its accounting policies, practices, and internal controls over financial reporting to support the standard.

The Company adopted the ASU during the first quarter of 2018 using the modified retrospective method for all contracts with customers. The adoption did not result in a significant impact on opening retained earnings. Revenue for prior periods have not been adjusted and continue to be reported under Revenue Recognition (Topic 605). No significant judgments were made in the application of the guidance in ASC 606 and there were no material contract assets, contract liabilities, or deferred contract costs as of June 30, 2018.

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The ASU requires entities to show the changes in the total of cash, cash equivalents, restricted cash, and restricted cash equivalents in the statement of cash flows. As a result, entities will no longer present transfers between cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. The Company adopted the ASU during the first quarter of 2018 using a retrospective approach for each period presented. Prior to the adoption of the ASU, the Company presented the change in restricted cash balances separately as a cash flow from investing activity. Upon adoption, the Company included restricted cash in each of the balances of the cash, cash equivalents, and restricted cash at the beginning and end of periods in the Condensed Consolidated Statements of Cash Flows. The prior period has been revised to conform to the current period presentation, and as a result, net cash flows for the six months ended July 1, 2017 increased by $4.5 million. A reconciliation of cash, cash equivalents, and restricted cash as of June 30, 2018 and December 30, 2017 is as follows:

(In thousands)	June 30, 2018		December 30, 2017
Cash & cash equivalents	$	281,445	$	120,269
Restricted cash included within other current assets	2,898		6,189
Restricted cash included within other assets	105		105
Total cash, cash equivalents, and restricted cash	$	284,448	$	126,563

Amounts included in restricted cash relate to required deposits in brokerage accounts that facilitate the Company’s hedging activities as well as imprest funds for the Company’s self-insured workers’ compensation program.

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. The ASU requires companies to account for the income tax effects of intercompany transfers of assets other than inventory when the transfer occurs. Companies will still be required to defer the income tax effects of intercompany inventory transactions in an exception to the income tax accounting guidance. The Company adopted the ASU during the first quarter of 2018 and the adoption had no impact on its Condensed Consolidated Financial Statements.

Issued

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842).  The ASU requires an entity to recognize a right-of-use asset and lease liability for all leases with terms of more than 12 months.  Recognition, measurement and presentation of expenses will depend on classification as a financing or operating lease.  The amendments also require certain quantitative and qualitative disclosures about leasing arrangements.  The ASU will be effective for interim and annual periods beginning in 2019.  Early adoption is permitted.  Currently the guidance requires a modified retrospective adoption, but in January 2018 the FASB proposed ASU No. 2018-01, Leases (Topic 842), Land Easement Practical Expedient for Transition to Topic 842, which if approved will allow entities to elect a simplified transition approach whereby they would apply the provisions of the new guidance at the effective date without adjusting the comparative periods presented. The Company is still evaluating the effects that the provisions of the ASU will have on its Condensed Consolidated Financial Statements.

XML

Recent Accounting Standards (Tables)

6 Months Ended

Jun. 30, 2018

Accounting Changes and Error Corrections [Abstract]

Schedule of Cash, Cash Equivalents and Restricted Cash

A reconciliation of cash, cash equivalents, and restricted cash as of June 30, 2018 and December 30, 2017 is as follows:

(In thousands)	June 30, 2018		December 30, 2017
Cash & cash equivalents	$	281,445	$	120,269
Restricted cash included within other current assets	2,898		6,189
Restricted cash included within other assets	105		105
Total cash, cash equivalents, and restricted cash	$	284,448	$	126,563

Schedule of Cash, Cash Equivalents and Restricted Cash

A reconciliation of cash, cash equivalents, and restricted cash as of June 30, 2018 and December 30, 2017 is as follows:

(In thousands)	June 30, 2018		December 30, 2017
Cash & cash equivalents	$	281,445	$	120,269
Restricted cash included within other current assets	2,898		6,189
Restricted cash included within other assets	105		105
Total cash, cash equivalents, and restricted cash	$	284,448	$	126,563

XML

Segment Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Summary of Segment Information

Summarized segment information is as follows:

	For the Quarter Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	453,183	$	175,891	$	39,172	$	(5,473	)	$	662,773
Cost of goods sold	384,821		154,401		30,688		(6,090		)	563,820
Depreciation and amortization	5,744		1,948		627		687			9,006
Selling, general, and administrative expense	20,599		3,449		2,510		11,870			38,428
(Gain) loss on sale of assets	—		—		—		(409		)	(409		)
Operating income	42,019		16,093		5,347		(11,531		)	51,928
Interest expense										(6,073		)
Other income, net										586
Income before income taxes										$	46,441

	For the Quarter Ended July 1, 2017
(In thousands)	Piping Systems			Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	422,844		$	154,504	$	36,636	$	282		$	614,266
Cost of goods sold	364,261			132,972		27,449		(371		)	524,311
Depreciation and amortization	5,591			1,904		615		485			8,595
Selling, general, and administrative expense	19,831			3,239		2,456		10,773			36,299
(Gain) loss on sale of assets	(1,631		)	—		—		—			(1,631		)
Operating income	34,792			16,389		6,116		(10,605		)	46,692
Interest expense											(6,442		)
Other income, net											342
Income before income taxes											$	40,592

Segment information (continued):

	For the Six Months Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	884,147	$	353,223	$	75,235	$	(9,772	)	$	1,302,833
Cost of goods sold	757,716		303,824		57,974		(10,024		)	1,109,490
Depreciation and amortization	11,622		3,851		1,248		1,741			18,462
Selling, general, and administrative expense	39,841		6,822		5,119		20,703			72,485
(Gain) loss on sale of assets	—		—		—		3,060			3,060
Operating income	74,968		38,726		10,894		(25,252		)	99,336
Interest expense										(11,982		)
Other income, net										1,146
Income before income taxes										$	88,500

	For the Six Months Ended July 1, 2017
(In thousands)	Piping Systems			Industrial Metals		Climate		Corporate and Eliminations			Total
Net sales	$	821,619		$	304,341	$	70,915	$	(4,689	)	$	1,192,186
Cost of goods sold	708,907			257,015		53,013		(6,197		)	1,012,738
Depreciation and amortization	10,933			3,802		1,244		971			16,950
Selling, general, and administrative expense	38,028			6,788		4,932		22,125			71,873
(Gain) loss on sale of assets	(1,631		)	—		—		—			(1,631		)
Operating income	65,382			36,736		11,726		(21,588		)	92,256
Interest expense											(8,973		)
Other income, net											936
Income before income taxes											$	84,219

Disaggregation of Revenue From Contracts with Customers

The following tables represent a disaggregation of revenue from contracts with customers, along with the reportable segment for each category:

	For the Quarter Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	379,165	$	—	$	—	$	379,165
Brass rod and forgings	—		135,921		—		135,921
OEM components, tube & assemblies	7,448		14,597		39,172		61,217
Valves and plumbing specialties	66,570		—		—		66,570
Other	—		25,373		—		25,373
	453,183		175,891		39,172		668,246
Intersegment sales							(5,473		)
Net sales							$	662,773

	For the Quarter Ended July 1, 2017
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	318,433	$	—	$	—	$	318,433
Brass rod and forgings	—		119,783		—		119,783
OEM components, tube & assemblies	47,709		12,887		36,636		97,232
Valves and plumbing specialties	56,702		—		—		56,702
Other	—		21,834		—		21,834
	422,844		154,504		36,636		613,984
Intersegment sales							282
Net sales							$	614,266

Disaggregation of revenue from contracts with customers (continued):

	For the Six Months Ended June 30, 2018
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	737,256	$	—	$	—	$	737,256
Brass rod and forgings	—		272,469		—		272,469
OEM components, tube & assemblies	14,510		29,664		75,235		119,409
Valves and plumbing specialties	132,381		—		—		132,381
Other	—		51,090		—		51,090
	884,147		353,223		75,235		1,312,605
Intersegment sales							(9,772		)
Net sales							$	1,302,833

	For the Six Months Ended July 1, 2017
(In thousands)	Piping Systems		Industrial Metals		Climate		Total
Tube and fittings	$	626,799	$	—	$	—	$	626,799
Brass rod and forgings	—		233,963		—		233,963
OEM components, tube & assemblies	79,680		26,102		70,915		176,697
Valves and plumbing specialties	115,140		—		—		115,140
Other	—		44,276		—		44,276
	821,619		304,341		70,915		1,196,875
Intersegment sales							(4,689		)
Net sales							$	1,192,186

XML

Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories

(In thousands)	June 30, 2018			December 30, 2017
Raw materials and supplies	$	75,307		$	108,397
Work-in-process	57,472			46,158
Finished goods	169,047			180,143
Valuation reserves	(7,286		)	(6,797		)
Inventories	$	294,540		$	327,901

XML

Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments Designated as Cash Flow Hedges Reflected in the Financial Statements

The following table summarizes the location and fair value of the derivative instruments and disaggregates the net derivative assets and liabilities into gross components on a contract-by-contract basis:

	Asset Derivatives						Liability Derivatives
		Fair Value						Fair Value
(In thousands)	Balance Sheet Location	June 30, 2018		December 30, 2017			Balance Sheet Location	June 30, 2018			December 30, 2017
Commodity contracts - gains	Other current assets	$	8	$	1,014		Other current liabilities	$	148		$	55
Commodity contracts - losses	Other current assets	—		(5		)	Other current liabilities	(787		)	(3,210		)
Total derivatives (1)		$	8	$	1,009			$	(639	)	$	(3,155	)

⁽¹⁾Does not include the impact of cash collateral provided to counterparties.

Schedule of Fair Value Hedges

The following tables summarize the effects of derivative instruments on the Company’s Condensed Consolidated Statements of Income:

		For the Quarter Ended				For the Six Months Ended
(In thousands)	Location	June 30, 2018		July 1, 2017		June 30, 2018			July 1, 2017
Fair value hedges:
Gain on commodity contracts (qualifying)	Cost of goods sold	$	—	$	—	$	391		$	—
Loss on hedged item - inventory	Cost of goods sold	—		—		(385		)	—
Undesignated derivatives:
Gain (loss) on commodity contracts (nonqualifying)	Cost of goods sold	2,301		672		8,427			(423		)

Summary of Activities Related to Derivative Instruments Classified as Cash Flow Hedges

The following tables summarize amounts recognized in and reclassified from AOCI during the period:

	For the Quarter Ended June 30, 2018
(In thousands)	Gain (Loss) Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Loss Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	52		Cost of goods sold	$	17
Other	(34		)	Other	—
Total	$	18		Total	$	17

	For the Quarter Ended July 1, 2017
(In thousands)	(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Loss Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	(250	)	Cost of goods sold	$	324
Interest rate swap	—			Interest expense	149
Other	38			Other	—
Total	$	(212	)	Total	$	473

	For the Six Months Ended June 30, 2018
(In thousands)	Loss Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Gain Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	(743	)	Cost of goods sold	$	(275	)
Other	(9		)	Other	—
Total	$	(752	)	Total	$	(275	)

	For the Six Months Ended July 1, 2017
(In thousands)	(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax			Classification Gains (Losses)	Loss Reclassified from AOCI (Effective Portion), Net of Tax
Cash flow hedges:
Commodity contracts	$	(813	)	Cost of goods sold	$	676
Interest rate swap	—			Interest expense	298
Other	156			Other	—
Total	$	(657	)	Total	$	974

XML

Investment in Unconsolidated Affiliates (Tables)

6 Months Ended

Jun. 30, 2018

Equity Method Investments and Joint Ventures [Abstract]

Summarized Financial Information Derived From the Company's Equity Method Investee's Consolidated Financial Statements

The following tables present summarized financial information derived from the Company’s equity method investees’ combined consolidated financial statements, which are prepared in accordance with U.S. GAAP.

(In thousands)	June 30, 2018		December 30, 2017
Current assets	$	236,856	$	246,127
Noncurrent assets	127,783		139,200
Current liabilities	172,658		174,710
Noncurrent liabilities	58,214		58,334

	For the Quarter Ended					For the Six Months Ended
(In thousands)	June 30, 2018		July 1, 2017			June 30, 2018			July 1, 2017
Net sales	$	126,205	$	132,600		$	250,305		$	258,900
Gross profit	11,749		19,600			23,849			35,200
Net income (loss)	471		(217		)	(17,860		)	(2,704		)

XML

Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost (Income)

The components of net periodic benefit cost (income) are as follows:

	For the Quarter Ended						For the Six Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Pension benefits:
Service cost	$	20		$	36		$	44		$	71
Interest cost	1,465			1,653			2,958			3,318
Expected return on plan assets	(2,290		)	(2,186		)	(4,579		)	(4,368		)
Amortization of net loss	235			516			584			1,072
Net periodic benefit (income) cost	$	(570	)	$	19		$	(993	)	$	93
Other benefits:
Service cost	$	56		$	53		$	116		$	109
Interest cost	146			146			294			295
Amortization of prior service credit	(225		)	(226		)	(451		)	(451		)
Amortization of net loss (gain)	11			(15		)	29			(20		)
Net periodic benefit income	$	(12	)	$	(42	)	$	(12	)	$	(67	)

XML

Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Changes in AOCI by Component, Net of Taxes and Noncontrolling Interest

The following table provides changes in AOCI by component, net of taxes and noncontrolling interests (amounts in parentheses indicate debits to AOCI):

	For the Six Months Ended June 30, 2018
(In thousands)	Cumulative Translation Adjustment			Unrealized Gain (Loss) on Derivatives			Pension/OPEB Liability Adjustment			Unrealized Gain on Equity Securities		Attributable to Unconsol. Affiliates			Total
Balance as of December 30, 2017	$	(38,163	)	$	847		$	(20,610	)	$	—	$	6,870		$	(51,056	)
Other comprehensive (loss) income before reclassifications	(6,793		)	(752		)	353			—		(280		)	(7,472		)
Amounts reclassified from AOCI	—			(275		)	146			—		—			(129		)
Net current-period other comprehensive (loss) income	(6,793		)	(1,027		)	499			—		(280		)	(7,601		)
Reclassification of stranded effects of the Act	—			112			(1,018		)	—		1,462			556
Balance as of June 30, 2018	$	(44,956	)	$	(68	)	$	(21,129	)	$	—	$	8,052		$	(58,101	)

	For the Six Months Ended July 1, 2017
(In thousands)	Cumulative Translation Adjustment			Unrealized (Loss) Gain on Derivatives			Pension/OPEB Liability Adjustment			Unrealized Gain (Loss) on Equity Securities			Attributable to Unconsol. Affiliates			Total
Balance as of December 31, 2016	$	(49,965	)	$	(300	)	$	(23,046	)	$	380		$	5,975		$	(66,956	)
Other comprehensive income (loss) before reclassifications	11,058			(657		)	(856		)	(1		)	(351		)	9,193
Amounts reclassified from AOCI	(3,777		)	974			491			(379		)	—			(2,691		)
Net current-period other comprehensive income (loss)	7,281			317			(365		)	(380		)	(351		)	6,502
Balance as of July 1, 2017	$	(42,684	)	$	17		$	(23,411	)	$	—		$	5,624		$	(60,454	)

Reclassification Adjustments Out of AOCI

Reclassification adjustments out of AOCI were as follows:

	Amount reclassified from AOCI
	For the Quarter Ended						For the Six Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017			Affected line item
Unrealized losses (gains) on derivatives:
Commodity contracts	$	19		$	602		$	(346	)	$	1,024		Cost of goods sold
Interest rate swap	—			232			—			464			Interest expense
	(2		)	(361		)	71			(514		)	Income tax (benefit) expense
	$	17		$	473		$	(275	)	$	974		Net of tax and noncontrolling interests
Amortization of net loss and prior service cost on employee benefit plans	$	21		$	275		$	162		$	601		Other income, net
	6			(46		)	(16		)	(110		)	Income tax expense (benefit)
	$	27		$	229		$	146		$	491		Net of tax and noncontrolling interests
Sale of available-for-sale securities	$	—		$	(357	)	$	—		$	(611	)	Other income, net
	$	—		$	138		$	—		$	232		Income tax expense
	$	—		$	(219	)	$	—		$	(379	)	Net of tax and noncontrolling interests
Gain recognized upon sale of business	$	—		$	(3,777	)	$	—		$	(3,777	)	Selling, general, and administrative expense
	$	—		$	—		$	—		$	—		Income tax expense
	$	—		$	(3,777	)	$	—		$	(3,777	)	Net of tax and noncontrolling interests

XML

Noncontrolling Interests (Tables)

6 Months Ended

Jun. 30, 2018

Noncontrolling Interest [Abstract]

Schedule of Noncontrolling Interests

(In thousands)	Noncontrolling Interests
Balance as of December 30, 2017	$	13,917
Dividends paid to noncontrolling interests	(592		)
Net income attributable to noncontrolling interests	916
Other comprehensive income attributable to noncontrolling interests, net of tax:
Foreign currency translation	147
Balance as of June 30, 2018	$	14,388

XML

Recent Accounting Standards - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of stranded effects of the Act	$ 556
Increase in cash flows			$ 157,885	$ (188,412)	[1]
ASU 2016-18 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in cash flows				4,500
Operating Income [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of net periodic benefit income		$ 111		154
Other Income [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of net periodic benefit income		$ (111)		$ (154)

[1] The Condensed Consolidated Statement of Cash Flows for the six months ended July 1, 2017 has been adjusted to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The Condensed Consolidated Statements of Cash Flows reflects the changes during the periods in the total of cash, cash equivalents, and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown. Refer to Note 1 for further discussion.

XML

Recent Accounting Standards - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017	Jul. 01, 2017	[1]	Dec. 31, 2016	[1]
Accounting Changes and Error Corrections [Abstract]
Cash & cash equivalents	$ 281,445	$ 120,269
Restricted cash included within other current assets	2,898	6,189
Restricted cash included within other assets	105	105
Total cash, cash equivalents, and restricted cash	$ 284,448	$ 126,563	$ 172,057		$ 360,469

[1] The Condensed Consolidated Statement of Cash Flows for the six months ended July 1, 2017 has been adjusted to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The Condensed Consolidated Statements of Cash Flows reflects the changes during the periods in the total of cash, cash equivalents, and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown. Refer to Note 1 for further discussion.

XML

Earnings per Common Share (Details) - shares shares in Thousands	3 Months Ended
	Jun. 30, 2018	Jul. 01, 2017
Earnings Per Share [Abstract]
Stock-based awards excluded from the computation of diluted earnings per share (in shares)	6	4

XML

Acquisitions and Dispositions - Acquisitions (Details) - USD ($) $ in Millions	Mar. 31, 2018	May 31, 2017
Die-Mold [Member]
Business Acquisition [Line Items]
Consideration transferred net of working capital adjustments	$ 14.8
Cash portion of acquisition price	12.5
Maximum possible contingent consideration	2.3
Fair value of assets acquired	5.6
Fair value of property, plant and equipment acquired	2.1
Fair value of inventories acquired	1.9
Fair value of accounts receivable acquired	1.6
Fair value of liabilities acquired	0.5
Fair value of accounts payable acquired	0.4
Fair value of other current liabilities acquired	0.1
Allocation to non-deductible goodwill and intangible assets	$ 9.7
Pexcor/Heatlink [Member]
Business Acquisition [Line Items]
Consideration transferred net of working capital adjustments		$ 17.2
Cash portion of acquisition price		16.3
Maximum possible contingent consideration		2.2
Fair value of assets acquired		9.9
Fair value of property, plant and equipment acquired		2.0
Fair value of inventories acquired		4.6
Fair value of accounts receivable acquired		2.8
Fair value of liabilities acquired		6.0
Fair value of accounts payable acquired		3.6
Fair value of other current liabilities acquired		0.5
Allocation to non-deductible goodwill and intangible assets		13.3
Fair value of other current assets acquired		0.5
Fair value of deferred taxes acquired		1.9
Valuation of contingent consideration		$ 0.9

XML

Acquisitions and Dispositions - Dispositions (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended			12 Months Ended
	Jun. 21, 2017	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017		Dec. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss		$ (471)	$ 217	$ 17,860	$ 2,704
Gain on sale of business				$ 0	1,631	[1]
Mueller-Xingrong [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage	50.50%
Net sales							$ 67,300
Net loss							$ 9
Mueller-Xingrong [Member] | Disposed of by sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of interest in joint venture	$ 18,300
Assets disposed of	56,800
Liabilities disposed of	36,200
Cumulative translation gain as a result of sale	$ 3,800
Gain on sale of business			$ 1,600		$ 1,600

[1] The Condensed Consolidated Statement of Cash Flows for the six months ended July 1, 2017 has been adjusted to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The Condensed Consolidated Statements of Cash Flows reflects the changes during the periods in the total of cash, cash equivalents, and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown. Refer to Note 1 for further discussion.

XML

Segment Information - Summary of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017		Jun. 30, 2018	Jul. 01, 2017
Summary of segment information [Abstract]
Net sales	$ 662,773	$ 614,266	[1]	$ 1,302,833	$ 1,192,186	[1]
Cost of goods sold	563,820	524,311	[1]	1,109,490	1,012,738	[1]
Depreciation and amortization	9,006	8,595	[1]	18,462	16,950	[1]
Selling, general, and administrative expense	38,428	36,299	[1]	72,485	71,873	[1]
(Gain) loss on sale of assets	(409)	(1,631)	[1]	3,060	(1,631)
Asset impairment				0	411	[2]
Operating income	51,928	46,692	[1]	99,336	92,256	[1]
Interest expense	(6,073)	(6,442)	[1]	(11,982)	(8,973)	[1]
Other income, net	586	342	[1]	1,146	936	[1]
Income before income taxes	46,441	40,592	[1]	88,500	84,219	[1]
Operating Segments [Member]
Summary of segment information [Abstract]
Net sales	668,246	613,984		1,312,605	1,196,875
Operating Segments [Member] | Piping Systems [Member]
Summary of segment information [Abstract]
Net sales	453,183	422,844		884,147	821,619
Cost of goods sold	384,821	364,261		757,716	708,907
Depreciation and amortization	5,744	5,591		11,622	10,933
Selling, general, and administrative expense	20,599	19,831		39,841	38,028
(Gain) loss on sale of assets	0	(1,631)		0	(1,631)
Operating income	42,019	34,792		74,968	65,382
Operating Segments [Member] | Industrial Metals [Member]
Summary of segment information [Abstract]
Net sales	175,891	154,504		353,223	304,341
Cost of goods sold	154,401	132,972		303,824	257,015
Depreciation and amortization	1,948	1,904		3,851	3,802
Selling, general, and administrative expense	3,449	3,239		6,822	6,788
(Gain) loss on sale of assets	0	0		0	0
Operating income	16,093	16,389		38,726	36,736
Operating Segments [Member] | Climate [Member]
Summary of segment information [Abstract]
Net sales	39,172	36,636		75,235	70,915
Cost of goods sold	30,688	27,449		57,974	53,013
Depreciation and amortization	627	615		1,248	1,244
Selling, general, and administrative expense	2,510	2,456		5,119	4,932
(Gain) loss on sale of assets	0	0		0	0
Operating income	5,347	6,116		10,894	11,726
Corporate and Eliminations [Member]
Summary of segment information [Abstract]
Net sales	(5,473)	282		(9,772)	(4,689)
Cost of goods sold	(6,090)	(371)		(10,024)	(6,197)
Depreciation and amortization	687	485		1,741	971
Selling, general, and administrative expense	11,870	10,773		20,703	22,125
(Gain) loss on sale of assets	(409)	0		3,060	0
Operating income	$ (11,531)	$ (10,605)		$ (25,252)	$ (21,588)

[1] The Condensed Consolidated Statements of Income for the quarter and six months ended July 1, 2017 have been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income. Refer to Note 1 for further discussion.

[2] The Condensed Consolidated Statement of Cash Flows for the six months ended July 1, 2017 has been adjusted to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The Condensed Consolidated Statements of Cash Flows reflects the changes during the periods in the total of cash, cash equivalents, and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown. Refer to Note 1 for further discussion.

XML

Segment Information - Net Sales by Major Product Line (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017		Jun. 30, 2018	Jul. 01, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 662,773	$ 614,266	[1]	$ 1,302,833	$ 1,192,186	[1]
Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	668,246	613,984		1,312,605	1,196,875
Operating Segments [Member] | Piping Systems [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	453,183	422,844		884,147	821,619
Operating Segments [Member] | Industrial Metals [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	175,891	154,504		353,223	304,341
Operating Segments [Member] | Climate [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	39,172	36,636		75,235	70,915
Operating Segments [Member] | Tube and fittings [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	379,165	318,433		737,256	626,799
Operating Segments [Member] | Tube and fittings [Member] | Piping Systems [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	379,165	318,433		737,256	626,799
Operating Segments [Member] | Tube and fittings [Member] | Industrial Metals [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0		0	0
Operating Segments [Member] | Tube and fittings [Member] | Climate [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0		0	0
Operating Segments [Member] | Brass rod and forgings [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	135,921	119,783		272,469	233,963
Operating Segments [Member] | Brass rod and forgings [Member] | Piping Systems [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0		0	0
Operating Segments [Member] | Brass rod and forgings [Member] | Industrial Metals [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	135,921	119,783		272,469	233,963
Operating Segments [Member] | Brass rod and forgings [Member] | Climate [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0		0	0
Operating Segments [Member] | OEM components, tube and assemblies [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	61,217	97,232		119,409	176,697
Operating Segments [Member] | OEM components, tube and assemblies [Member] | Piping Systems [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	7,448	47,709		14,510	79,680
Operating Segments [Member] | OEM components, tube and assemblies [Member] | Industrial Metals [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	14,597	12,887		29,664	26,102
Operating Segments [Member] | OEM components, tube and assemblies [Member] | Climate [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	39,172	36,636		75,235	70,915
Operating Segments [Member] | Valves and plumbing specialties [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	66,570	56,702		132,381	115,140
Operating Segments [Member] | Valves and plumbing specialties [Member] | Piping Systems [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	66,570	56,702		132,381	115,140
Operating Segments [Member] | Valves and plumbing specialties [Member] | Industrial Metals [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0		0	0
Operating Segments [Member] | Valves and plumbing specialties [Member] | Climate [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0		0	0
Operating Segments [Member] | Other products [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	25,373	21,834		51,090	44,276
Operating Segments [Member] | Other products [Member] | Piping Systems [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0		0	0
Operating Segments [Member] | Other products [Member] | Industrial Metals [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	25,373	21,834		51,090	44,276
Operating Segments [Member] | Other products [Member] | Climate [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0		0	0
Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ (5,473)	$ 282		$ (9,772)	$ (4,689)

[1] The Condensed Consolidated Statements of Income for the quarter and six months ended July 1, 2017 have been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income. Refer to Note 1 for further discussion.

XML

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 75,307	$ 108,397
Work-in-process	57,472	46,158
Finished goods	169,047	180,143
Valuation reserves	(7,286)	(6,797)
Inventories	$ 294,540	$ 327,901

XML

Financial Instruments - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 30, 2017
Derivative [Line Items]
Restricted cash in other current assets as collateral related to open derivative contracts	$ 2,100	$ 5,300
Commodity Contracts [Member]
Derivative [Line Items]
Deferred net losses, net of tax, included in AOCI	215
Cash Flow Hedging [Member] | Commodity Contracts [Member] | Long [Member]
Derivative [Line Items]
Open option contracts written, at fair value	$ 48,200
Time period for open copper future contract purchases	15 months
Fair value of future contracts with (loss) gain position	$ (639)
Fair Value Hedging [Member] | Commodity Contracts [Member] | Short [Member]
Derivative [Line Items]
Fair value of future contracts with (loss) gain position	8
Open future contracts to sell copper	$ 200
Time period for open copper future contract sales	3 months

XML

Financial Instruments - Summary of Location and Fair Value (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Derivatives, Fair Value [Line Items]
Total derivative assets	$ 8	$ 1,009
Total derivative liabilities	(639)	(3,155)
Other Current Assets [Member] | Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Other current assets: Gain positions	8	1,014
Other current assets: Loss positions	0	(5)
Other Current Liabilities [Member] | Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Other current liability: Gain positions	148	55
Other current liability: Loss positions	$ (787)	$ (3,210)

XML

Financial Instruments - Effects of Derivative Instruments on Statements of Income (Details) - Cost of Goods Sold [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Commodity Contracts [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain on the derivatives in designated and qualifying fair value hedges	$ 0	$ 0	$ 391	$ 0
Commodity Contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on commodity contracts (nonqualifying)	2,301	672	8,427	(423)
Inventories [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain on the derivatives in designated and qualifying fair value hedges	$ 0	$ 0	$ (385)	$ 0

XML

Financial Instruments - Amounts Recognized in and Reclassified from AOCI (Details) - Cash Flow Hedging [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax	$ 18	$ (212)	$ (752)	$ (657)
(Gain) Loss Reclassified from AOCI (Effective Portion), Net of Tax	17	473	(275)	974
Commodity Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax	52	(250)	(743)	(813)
Commodity Contracts [Member] | Cost of Goods Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Gain) Loss Reclassified from AOCI (Effective Portion), Net of Tax	17	324	(275)	676
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax		0		0
Interest Rate Swap [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Gain) Loss Reclassified from AOCI (Effective Portion), Net of Tax		149		298
Other [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax	(34)	38	(9)	156
(Gain) Loss Reclassified from AOCI (Effective Portion), Net of Tax	$ 0	$ 0	$ 0	$ 0

XML

Investment in Unconsolidated Affiliates - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		30 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018
Schedule of Equity Method Investments [Line Items]
Net loss	$ (471)	$ 217	$ 17,860	$ 2,704
Tecumseh Products Holdings LLC [Member]
Schedule of Equity Method Investments [Line Items]
Interest in the joint venture, ownership percentage	50.00%		50.00%		50.00%
Net loss	$ 6,700		$ 12,900
Gain from settlement with tax authority	$ 7,000		$ 7,000
Second Unconsolidated Affiliate [Member]
Schedule of Equity Method Investments [Line Items]
Interest in the joint venture, ownership percentage	50.00%		50.00%		50.00%
Cayan Ventures and Bahrain Mumtalakat Holding Company [Member]
Schedule of Equity Method Investments [Line Items]
Interest in the joint venture, ownership percentage	40.00%		40.00%		40.00%
Net loss	$ 500		$ 1,600
Cash invested to acquire joint venture interest					$ 4,500
Labor Claim [Member] | Tecumseh Products Holdings LLC [Member]
Schedule of Equity Method Investments [Line Items]
Contingency charge			$ (3,000)

XML

Investment in Unconsolidated Affiliates - Summarized Financial Information Derived from Equity Method Investees' Consolidated Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 30, 2017
Balance sheet data [Abstract]
Current assets	$ 236,856		$ 236,856		$ 246,127
Noncurrent assets	127,783		127,783		139,200
Current liabilities	172,658		172,658		174,710
Noncurrent liabilities	58,214		58,214		$ 58,334
Income statement data [Abstract]
Net sales	126,205	$ 132,600	250,305	$ 258,900
Gross profit	11,749	19,600	23,849	35,200
Net income (loss)	$ 471	$ (217)	$ (17,860)	$ (2,704)

XML

Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Pension Benefits [Member]
Components of net periodic benefit cost (income) [Abstract]
Service cost	$ 20	$ 36	$ 44	$ 71
Interest cost	1,465	1,653	2,958	3,318
Expected return on plan assets	(2,290)	(2,186)	(4,579)	(4,368)
Amortization of net loss (gain)	235	516	584	1,072
Net periodic benefit (income) cost	(570)	19	(993)	93
Other Benefits [Member]
Components of net periodic benefit cost (income) [Abstract]
Service cost	56	53	116	109
Interest cost	146	146	294	295
Amortization of prior service credit	(225)	(226)	(451)	(451)
Amortization of net loss (gain)	11	(15)	29	(20)
Net periodic benefit (income) cost	$ (12)	$ (42)	$ (12)	$ (67)

XML

Commitments and Contingencies - Additional Information (Details)		1 Months Ended	6 Months Ended
	Jul. 13, 2018 USD ($)	Jan. 31, 2018 USD ($) unilateral_administrative_orders	Jun. 30, 2018 USD ($) Import_entry property	Jun. 30, 2018 potentially_responsible_party	Jun. 30, 2018 smelter_site	Nov. 08, 2016 USD ($)	Apr. 19, 2010
Loss Contingencies [Line Items]
Term of guarantees			1 year
Payments required to be made under guarantees, maximum			$ 8,700,000
United States Department of Commerce Antidumping Review [Member]
Loss Contingencies [Line Items]
Assignment of antidumping duty rate on U.S. imports by Company subsidiaries							48.33%
Payment for interest and duties			$ 3,000,000
Number of import entries | Import_entry			795
Unlawful Employment Practices [Member]
Loss Contingencies [Line Items]
Term of consent decree			2 years 6 months
Subsequent Event [Member] | Unlawful Employment Practices [Member]
Loss Contingencies [Line Items]
Maximum amount to be paid to fund discrimination claims	$ 1,000,000.0
Southeast Kansas Sites [Member] | Non operating Properties [Member]
Loss Contingencies [Line Items]
Number of parties involved in settlement negotiations				2	3
Environmental reserves			$ 5,600,000
Shasta Area Mine Sites [Member] | Non operating Properties [Member]
Loss Contingencies [Line Items]
Period of permit, implementation of Best Management Practices			10 years
Estimated remediation costs, term			30 years
Lead Refinery Site [Member]
Loss Contingencies [Line Items]
Financial guarantee						$ 1,000,000
Lead Refinery Site [Member] | Non operating Properties [Member]
Loss Contingencies [Line Items]
Estimated remediation costs, term			19 years
Amount 2 other PRPs will pay to fund cleanup			$ 26,000,000
Number of surrounding properties | property			300
Lead Refinery NPL Site [Member]
Loss Contingencies [Line Items]
Environmental reserves		$ 4,500,000
Number of UAOs | unilateral_administrative_orders		2
Site contingency, total costs		$ 25,000,000
Site contingency, amount agreed upon to pay PRPs for past costs		$ 2,000,000
Mueller Copper Tube Products, Inc. [Member] | Operating Properties [Member]
Loss Contingencies [Line Items]
Estimated remediation costs, term			8 years
Minimum [Member] | Shasta Area Mine Sites [Member] | Non operating Properties [Member]
Loss Contingencies [Line Items]
Estimated remediation costs			$ 12,800,000
Minimum [Member] | Lead Refinery Site [Member] | Non operating Properties [Member]
Loss Contingencies [Line Items]
Estimated remediation costs			1,800,000
Minimum [Member] | Mueller Copper Tube Products, Inc. [Member] | Operating Properties [Member]
Loss Contingencies [Line Items]
Estimated remediation costs			800,000
Maximum [Member] | Shasta Area Mine Sites [Member] | Non operating Properties [Member]
Loss Contingencies [Line Items]
Estimated remediation costs			17,600,000
Maximum [Member] | Lead Refinery Site [Member] | Non operating Properties [Member]
Loss Contingencies [Line Items]
Estimated remediation costs			3,000,000
Maximum [Member] | Mueller Copper Tube Products, Inc. [Member] | Operating Properties [Member]
Loss Contingencies [Line Items]
Estimated remediation costs			$ 1,200,000

XML

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 30, 2017
Income Tax Disclosure [Abstract]
Effective tax rate	27.00%	31.00%	22.00%	29.00%
Impact of investments in unconsolidated affiliates			$ 3.7	$ 0.8
Provision for state income taxes, net of federal benefits	$ 1.4	$ 0.8	2.6	1.7
Global intangible low-taxed income			1.0
Other items	$ 1.3	0.2	$ 1.2	$ 0.7
Statutory income tax rate			21.00%	35.00%
Reduction for U.S. production activities		0.9		$ 1.8
Effect of foreign adjustments		$ 1.6		3.0
Tax benefit of equity compensation deductions				$ 1.7
One-time transition tax liability			$ 12.9		$ 12.9
Provisional tax benefit			$ 12.1		$ 12.1

XML

Accumulated Other Comprehensive Income (Loss) - Changes by Component (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance		$ 536,028		$ 536,028
Total other comprehensive (loss) income, net	$ (10,516)		$ 1,773	(7,453)	$ 7,337
Reclassification of stranded effects of the Act		556
Ending balance	572,089			572,089
Total [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance		(51,056)		(51,056)	(66,956)
Other comprehensive (loss) income before reclassifications				(7,472)	9,193
Amounts reclassified from AOCI				(129)	(2,691)
Total other comprehensive (loss) income, net				(7,601)	6,502
Reclassification of stranded effects of the Act				556
Ending balance	(58,101)		(60,454)	(58,101)	(60,454)
Cumulative Translation Adjustment [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance		(38,163)		(38,163)	(49,965)
Other comprehensive (loss) income before reclassifications				(6,793)	11,058
Amounts reclassified from AOCI				0	(3,777)
Total other comprehensive (loss) income, net				(6,793)	7,281
Reclassification of stranded effects of the Act				0
Ending balance	(44,956)		(42,684)	(44,956)	(42,684)
Unrealized (Loss) Gain on Derivatives [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance		847		847	(300)
Other comprehensive (loss) income before reclassifications				(752)	(657)
Amounts reclassified from AOCI				(275)	974
Total other comprehensive (loss) income, net				(1,027)	317
Reclassification of stranded effects of the Act				112
Ending balance	(68)		17	(68)	17
Pension/OPEB Liability Adjustment [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance		(20,610)		(20,610)	(23,046)
Other comprehensive (loss) income before reclassifications				353	(856)
Amounts reclassified from AOCI				146	491
Total other comprehensive (loss) income, net				499	(365)
Reclassification of stranded effects of the Act				(1,018)
Ending balance	(21,129)		(23,411)	(21,129)	(23,411)
Unrealized Gain (Loss) on Equity Securities [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance		0		0	380
Other comprehensive (loss) income before reclassifications				0	(1)
Amounts reclassified from AOCI				0	(379)
Total other comprehensive (loss) income, net				0	(380)
Reclassification of stranded effects of the Act				0
Ending balance	0		0	0	0
Attributable to Unconsolidated Affiliates [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance		$ 6,870		6,870	5,975
Other comprehensive (loss) income before reclassifications				(280)	(351)
Amounts reclassified from AOCI				0	0
Total other comprehensive (loss) income, net				(280)	(351)
Reclassification of stranded effects of the Act				1,462
Ending balance	$ 8,052		$ 5,624	$ 8,052	$ 5,624

XML

Accumulated Other Comprehensive Income (Loss) - Reclassification Adjustments Out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017		Jun. 30, 2018	Jul. 01, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold	$ 563,820	$ 524,311	[1]	$ 1,109,490	$ 1,012,738	[1]
Interest expense	6,073	6,442	[1]	11,982	8,973	[1]
Other income, net	(586)	(342)	[1]	(1,146)	(936)	[1]
Income tax (benefit) expense	12,411	12,650	[1]	19,806	24,579	[1]
Net of tax and noncontrolling interests	(33,182)	(27,633)	[1]	(57,310)	(57,620)	[1]
Selling, general, and administrative expense	38,428	36,299	[1]	72,485	71,873	[1]
Unrealized losses (gains) on derivatives [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold	19	602		(346)	1,024
Interest expense	0	232		0	464
Income tax (benefit) expense	(2)	(361)		71	(514)
Net of tax and noncontrolling interests	17	473		(275)	974
Amortization of net loss and prior service cost on employee benefit plans [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income, net	21	275		162	601
Income tax (benefit) expense	6	(46)		(16)	(110)
Net of tax and noncontrolling interests	27	229		146	491
Sale of available-for-sale securities [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income, net	0	(357)		0	(611)
Income tax (benefit) expense	0	138		0	232
Net of tax and noncontrolling interests	0	(219)		0	(379)
Gain recognized upon sale of business [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax (benefit) expense	0	0		0	0
Net of tax and noncontrolling interests	0	(3,777)		0	(3,777)
Selling, general, and administrative expense	$ 0	$ (3,777)		$ 0	$ (3,777)

[1] The Condensed Consolidated Statements of Income for the quarter and six months ended July 1, 2017 have been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income. Refer to Note 1 for further discussion.

XML

Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	[1]	Jun. 30, 2018	Jul. 01, 2017	[1]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance as of December 30, 2017				$ 13,917
Dividends paid to noncontrolling interests				(592)
Net income attributable to noncontrolling interests	$ 700	$ 200		916	$ 668
Other comprehensive income attributable to noncontrolling interests, net of tax:
Foreign currency translation				147
Balance as of June 30, 2018	$ 14,388			$ 14,388

[1] The Condensed Consolidated Statements of Income for the quarter and six months ended July 1, 2017 have been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Condensed Consolidated Statements of Income. Refer to Note 1 for further discussion.

XML

Subsequent Events (Details) - USD ($) $ in Millions	Jul. 16, 2018	Jul. 06, 2018	Jul. 02, 2018	Jun. 30, 2018	Jun. 29, 2018
Subsequent Event [Line Items]
Long-term line of credit				$ 315.0
ATCO Rubber Product [Member]
Subsequent Event [Line Items]
Long-term line of credit					$ 150.0
ATCO Rubber Product [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Cash payment for acquisition			$ 157.7
Maximum possible contingent consideration			12.0
Fair value of assets acquired			107.2
Fair value of property, plant and equipment acquired			52.1
Fair value of inventories acquired			32.4
Fair value of accounts receivable acquired			21.9
Fair value of other current assets acquired			0.6
Fair value of other assets acquired			0.2
Fair value of liabilities acquired			18.1
Fair value of accounts payable acquired			8.1
Fair value of other current liabilities acquired			7.4
Fair value of other liabilities acquired			2.6
Revenues of acquired entity			$ 166.0
Revolving Credit Facility [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Repayment of line of credit	$ 25.0	$ 50.0
Line of Credit [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity				$ 350.0