Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 _________________________________________________________
FORM 10-Q

_________________________________________________________
xQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2017April 3, 2021
OR
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from to
Commission File Number 1-8174001-08174

_________________________________________________________
DUCOMMUN INCORPORATED
(Exact name of registrant as specified in its charter)

_________________________________________________________
Delaware95-0693330
(State or other jurisdiction of

incorporation or organization)
(I.R.S. Employer

Identification No.)
200 Sandpointe Avenue, Suite 700, Santa Ana, California92707-5759
(Address of principal executive offices)(Zip code)
Registrant’s telephone number, including area code: (657) 335-3665
N/A
(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, $.01 par value per shareDCONew York Stock Exchange
_________________________________________________________
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  x  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)submit).    Yes  x    No  ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer¨Accelerated filerx
Non-accelerated filer¨Smaller reporting company
Large accelerated filer¨Accelerated filerx
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  x
As of October 24, 2017,April 27, 2021, the registrant had 11,328,18511,849,597 shares of common stock outstanding.



Table of Contents
DUCOMMUN INCORPORATED AND SUBSIDIARIES
Page
PART I. FINANCIAL INFORMATION
Page
PART I. FINANCIAL INFORMATION
Item 1.
Item 2.
Item 3.
Item 4.
PART II. OTHER INFORMATION
Item 1.
Item 1A.
Item 4.
Item 6.



2

Table of Contents
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements
Ducommun Incorporated and Subsidiaries
Condensed Consolidated Balance Sheets
(Unaudited)
(InDollars in thousands, except share and per share data)

 September 30,
2017
 December 31,
2016
April 3,
2021
December 31,
2020
Assets    Assets
Current Assets    Current Assets
Cash and cash equivalents $3,689
 $7,432
Cash and cash equivalents$16,972 $56,466 
Accounts receivable, net of allowance for doubtful accounts of $620 and $495 at September 30, 2017 and December 31, 2016, respectively 78,459
 76,239
Accounts receivable, net (allowance for credit losses of $1,570 and $1,552 at April 3, 2021 and December 31, 2020, respectivelyAccounts receivable, net (allowance for credit losses of $1,570 and $1,552 at April 3, 2021 and December 31, 2020, respectively61,124 58,025 
Contract assetsContract assets173,909 154,028 
Inventories 137,157
 119,896
Inventories138,287 129,223 
Production cost of contracts 11,389
 11,340
Production cost of contracts7,198 6,971 
Other current assets 11,090
 11,034
Other current assets5,723 5,571 
Total Current Assets 241,784
 225,941
Total Current Assets403,213 410,284 
Property and equipment, net of accumulated depreciation of $143,662 and $135,484 at September 30, 2017 and December 31, 2016, respectively 114,034
 101,590
Property and equipment, net of accumulated depreciation of $172,536 and $169,742 at April 3, 2021 and December 31, 2020, respectivelyProperty and equipment, net of accumulated depreciation of $172,536 and $169,742 at April 3, 2021 and December 31, 2020, respectively109,180 109,990 
Operating Lease Right-of-Use AssetsOperating Lease Right-of-Use Assets15,703 16,348 
Goodwill 117,435
 82,554
Goodwill170,830 170,830 
Intangibles, net 117,285
 101,573
Non-current deferred income taxes 286
 286
Other assets 3,025
 3,485
Intangibles, NetIntangibles, Net121,506 124,744 
Deferred Income TaxesDeferred Income Taxes33 33 
Other AssetsOther Assets5,399 5,118 
Total Assets $593,849
 $515,429
Total Assets$825,864 $837,347 
Liabilities and Shareholders’ Equity    Liabilities and Shareholders’ Equity
Current Liabilities    Current Liabilities
Accounts payableAccounts payable$70,235 $63,980 
Contract liabilitiesContract liabilities24,257 28,264 
Accrued and other liabilitiesAccrued and other liabilities28,433 40,526 
Operating lease liabilitiesOperating lease liabilities3,118 3,132 
Current portion of long-term debt $
 $3
Current portion of long-term debt7,000 7,000 
Accounts payable 68,509
 57,024
Accrued liabilities 29,799
 29,279
Total Current Liabilities 98,308
 86,306
Total Current Liabilities133,043 142,902 
Long-term debt, less current portion 222,394
 166,896
Non-current deferred income taxes 31,253
 31,417
Other long-term liabilities 17,245
 18,707
Long-Term Debt, Less Current PortionLong-Term Debt, Less Current Portion304,344 311,922 
Non-Current Operating Lease LiabilitiesNon-Current Operating Lease Liabilities13,785 14,555 
Deferred Income TaxesDeferred Income Taxes17,598 16,992 
Other Long-Term LiabilitiesOther Long-Term Liabilities21,524 21,642 
Total Liabilities 369,200
 303,326
Total Liabilities490,294 508,013 
Commitments and contingencies (Notes 12, 14) 
 
Commitments and Contingencies (Notes 6, 8)Commitments and Contingencies (Notes 6, 8)00
Shareholders’ Equity    Shareholders’ Equity
Common stock - $0.01 par value; 35,000,000 shares authorized; 11,324,917 and 11,193,813 issued at September 30, 2017 and December 31, 2016, respectively 113
 112
Common stock - $0.01 par value; 35,000,000 shares authorized; 11,849,597 and 11,728,212 shares issued and outstanding at April 3, 2021 and December 31, 2020, respectivelyCommon stock - $0.01 par value; 35,000,000 shares authorized; 11,849,597 and 11,728,212 shares issued and outstanding at April 3, 2021 and December 31, 2020, respectively118 117 
Additional paid-in capital 78,624
 76,783
Additional paid-in capital96,385 97,090 
Retained earnings 151,880
 141,287
Retained earnings248,422 241,727 
Accumulated other comprehensive loss (5,968) (6,079)Accumulated other comprehensive loss(9,355)(9,600)
Total Shareholders’ Equity 224,649
 212,103
Total Shareholders’ Equity335,570 329,334 
Total Liabilities and Shareholders’ Equity $593,849
 $515,429
Total Liabilities and Shareholders’ Equity$825,864 $837,347 
See accompanying notes to Condensed Consolidated Financial Statements.

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Ducommun Incorporated and Subsidiaries
Condensed Consolidated Statements of Income
(Unaudited)
(InDollars in thousands, except per share amounts)


 Three Months Ended Nine Months Ended Three Months Ended
 September 30,
2017
 October 1,
2016
 September 30,
2017
 October 1,
2016
April 3,
2021
March 28,
2020
Net Revenues $138,690
 $132,571
 $415,925
 $408,156
Net Revenues$157,151 $173,475 
Cost of Sales 112,681
 107,348
 338,798
 329,749
Cost of Sales124,051 136,671 
Gross Profit 26,009
 25,223
 77,127
 78,407
Gross Profit33,100 36,804 
Selling, General and Administrative Expenses 18,814
 17,171
 59,361
 58,796
Selling, General and Administrative Expenses22,490 23,178 
Operating Income 7,195
 8,052
 17,766
 19,611
Operating Income10,610 13,626 
Interest Expense (2,088) (1,945) (5,588) (6,279)Interest Expense(2,806)(4,246)
Gain on Divestitures 
 
 
 18,815
Other Income 488
 141
 488
 141
Income Before Taxes 5,595
 6,248
 12,666
 32,288
Income Before Taxes7,804 9,380 
Income Tax Expense 940
 1,234
 2,073
 9,863
Income Tax Expense1,109 1,450 
Net Income $4,655
 $5,014
 $10,593
 $22,425
Net Income$6,695 $7,930 
Earnings Per Share        Earnings Per Share
Basic earnings per share $0.41
 $0.45
 $0.94
 $2.01
Basic earnings per share$0.57 $0.68 
Diluted earnings per share $0.41
 $0.44
 $0.92
 $1.99
Diluted earnings per share$0.55 $0.67 
Weighted-Average Number of Common Shares Outstanding        Weighted-Average Number of Common Shares Outstanding
Basic 11,241
 11,169
 11,276
 11,141
Basic11,791 11,610 
Diluted 11,486
 11,310
 11,556
 11,261
Diluted12,250 11,855 
See accompanying notes to Condensed Consolidated Financial Statements.

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Ducommun Incorporated and Subsidiaries
Condensed Consolidated Statements of Comprehensive Income
(Unaudited)
(InDollars in thousands)
 
  Three Months Ended Nine Months Ended
  September 30,
2017
 October 1,
2016
 September 30,
2017
 October 1,
2016
Net Income $4,655
 $5,014
 $10,593
 $22,425
Other Comprehensive Income (Loss)        
Amortization of actuarial losses and prior service costs, net of tax benefit of $74 and $71 for the three months ended September 30, 2017 and October 1, 2016, respectively, and $225 and $212 for the nine months ended September 30, 2017 and October 1, 2016, respectively 128
 120
 382
 360
Change in unrealized gains and losses on cash flow hedges, net of tax of $17 and zero for the three months ended September 30, 2017 and October 1, 2016, respectively, and $161 and $326 for the nine months ended September 30, 2017 and October 1, 2016, respectively (28) 
 (271) (556)
Other Comprehensive Income (Loss) 100
 120
 111
 (196)
Comprehensive Income $4,755
 $5,134
 $10,704
 $22,229
Three Months Ended
April 3,
2021
March 28,
2020
Net Income$6,695 $7,930 
Other Comprehensive Income, Net of Tax:
Amortization of actuarial loss and prior service costs, net of tax of $76 and $59 for the three months ended April 3, 2021 and March 28, 2020, respectively245 190 
Change in unrealized gains and losses on cash flow hedges, net of tax of 0 and $26 for the three months ended April 3, 2021 and March 28, 2020, respectively86 
Other Comprehensive Income, Net of Tax245 276 
Comprehensive Income$6,940 $8,206 
See accompanying notes to Condensed Consolidated Financial Statements.

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Ducommun Incorporated and Subsidiaries
Condensed Consolidated Statements of Changes in Shareholders’ Equity
(Unaudited)
(Dollars in thousands)

 Shares
Outstanding
Common
Stock
Additional
Paid-In
Capital
Retained
Earnings
Accumulated
Other
Comprehensive
Loss
Total
Shareholders’
Equity
Balance at December 31, 201911,572,668 $116 $88,399 $212,553 $(8,268)$292,800 
Net income— — — 7,930 — 7,930 
Other comprehensive loss, net of tax— — — — 276 276 
Employee stock purchase plan27,104 — 1,112 — — 1,112 
Stock options exercised1,569 — 39 — — 39 
Stock awards vested86,523 (1)— — 
Stock repurchased related to the exercise of stock options and stock awards vested(39,247)(1)(2,008)— — (2,009)
Stock-based compensation— — 2,279 — — 2,279 
Balance at March 28, 202011,648,617 $116 $89,820 $220,483 $(7,992)$302,427 
Balance at December 31, 202011,728,212 $117 $97,090 $241,727 $(9,600)$329,334 
Net income— — — 6,695 — 6,695 
Other comprehensive loss, net of tax— — — — 245 245 
Employee stock purchase plan31,580 — 1,558 — — 1,558 
Stock options exercised17,872 — 610 — — 610 
Stock awards vested178,827 (2)— — 
Stock repurchased related to the exercise of stock options and stock awards vested(106,894)(1)(6,004)— — (6,005)
Stock-based compensation— — 3,133 — — 3,133 
Balance at April 3, 202111,849,597 $118 $96,385 $248,422 $(9,355)$335,570 
See accompanying notes to Condensed Consolidated Financial Statements.

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Ducommun Incorporated and Subsidiaries
Condensed Consolidated Statements of Cash Flows
(Unaudited)
(InDollars in thousands)
 
 Nine Months EndedThree Months Ended
 September 30,
2017
 October 1,
2016
April 3,
2021
March 28,
2020
Cash Flows from Operating Activities    Cash Flows from Operating Activities
Net Income $10,593
 $22,425
Net Income$6,695 $7,930 
Adjustments to Reconcile Net Income to    Adjustments to Reconcile Net Income to
Net Cash Provided by Operating Activities:    Net Cash Provided by Operating Activities:
Depreciation and amortization 17,149
 17,420
Depreciation and amortization6,922 7,336 
Gain on divestitures 
 (18,815)
Non-cash operating lease costNon-cash operating lease cost736 811 
Stock-based compensation expense 4,264
 2,579
Stock-based compensation expense3,133 2,279 
Deferred income taxes (164) (1,602)Deferred income taxes606 1,495 
Provision for (recovery of) doubtful accounts 125
 (26)
Provision for credit lossesProvision for credit losses18 97 
Other (2,217) (4,923)Other122 194 
Changes in Assets and Liabilities:    Changes in Assets and Liabilities:
Accounts receivable (1,427) 5,777
Accounts receivable(3,117)(14,591)
Contract assetsContract assets(19,881)(10,543)
Inventories (15,529) (15,055)Inventories(9,064)(7,269)
Production cost of contracts (599) (1,437)Production cost of contracts(488)973 
Other assets 458
 7,095
Other assets(369)871 
Accounts payable 13,801
 19,586
Accounts payable8,192 (4,711)
Contract liabilitiesContract liabilities(4,007)13,361 
Operating lease liabilitiesOperating lease liabilities(784)(700)
Accrued and other liabilities 903
 (5,453)Accrued and other liabilities(12,069)(9,567)
Net Cash Provided by Operating Activities 27,357
 27,571
Net Cash Used in Operating ActivitiesNet Cash Used in Operating Activities(23,355)(12,034)
Cash Flows from Investing Activities    Cash Flows from Investing Activities
Purchases of property and equipment (24,599) (12,712)Purchases of property and equipment(4,542)(3,867)
Proceeds from sale of assets 3
 
Insurance recoveries related to property and equipment 288
 
Proceeds from divestitures 
 55,272
Payments for purchase of Lightning Diversion Systems, LLC, net of cash acquired (59,178) 
Net Cash (Used in) Provided by Investing Activities (83,486) 42,560
Post closing cash received from the acquisition of Nobles Worldwide, Inc., netPost closing cash received from the acquisition of Nobles Worldwide, Inc., net190 
Net Cash Used in Investing ActivitiesNet Cash Used in Investing Activities(4,542)(3,677)
Cash Flows from Financing Activities    Cash Flows from Financing Activities
Borrowings from senior secured revolving credit facility 320,500
 29,700
Borrowings from senior secured revolving credit facility20,000 65,900 
Repayments of senior secured revolving credit facility (255,800) (29,700)Repayments of senior secured revolving credit facility(25,000)(15,900)
Repayments of senior unsecured notes and term loans (10,000) (65,000)
Repayments of term loansRepayments of term loans(2,676)(7,362)
Repayments of other debt (3) (22)Repayments of other debt(84)(54)
Net cash paid upon issuance of common stock under stock plans (2,311) (1,097)Net cash paid upon issuance of common stock under stock plans(3,837)(858)
Net Cash Provided by (Used in) Financing Activities 52,386
 (66,119)
Net Cash (Used in) Provided by Financing ActivitiesNet Cash (Used in) Provided by Financing Activities(11,597)41,726 
Net (Decrease) Increase in Cash and Cash Equivalents (3,743) 4,012
Net (Decrease) Increase in Cash and Cash Equivalents(39,494)26,015 
Cash and Cash Equivalents at Beginning of Period 7,432
 5,454
Cash and Cash Equivalents at Beginning of Period56,466 39,584 
Cash and Cash Equivalents at End of Period $3,689
 $9,466
Cash and Cash Equivalents at End of Period$16,972 $65,599 
See accompanying notes to Condensed Consolidated Financial Statements.

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Ducommun Incorporated and Subsidiaries
Notes to Condensed Consolidated Financial Statements (Unaudited)


Note 1. Summary of Significant Accounting Policies
Description of Business
We are a leading global provider of engineering and manufacturing services for high-performance products and high-cost-of failure applications used primarily in the aerospace and defense (“A&D”), industrial, medical and other industries (collectively, “Industrial”). Our subsidiariesoperations are organized into two strategic2 primary businesses: the Electronic Systems segment (“Electronic Systems”) and the Structural Systems segment (“Structural Systems”), each of which is a reportable operating segment. Electronic Systems designs, engineers and manufactures high-reliability electronic and electromechanical products used in worldwide technology-driven markets including aerospace, defense, industrialA&D and medical and otherIndustrial end-use markets. Electronic Systems’ product offerings primarily range from prototype development to complex assemblies. Structural Systems designs, engineers and manufactures large, complex contoured aerospace structuralaerostructure components and assemblies and supplies composite and metal bonded structures and assemblies. Structural Systems’ products are primarily used on commercial aircraft, military fixed-wing aircraft, and military and commercial rotary-wing aircraft. BothAll reportable operating segments follow the same accounting principles.
Basis of Presentation
The unaudited condensed consolidated financial statements include the accounts of Ducommun Incorporated and its subsidiaries (“Ducommun,” the “Company,” “we,” “us” or “our”), after eliminating intercompany balances and transactions. The December 31, 20162020 condensed consolidated balance sheet data was derived from audited financial statements, but does not contain all disclosures required by accounting principles generally accepted in the United States of America (“GAAP”).
Our significant accounting policies were described in Part IV, Item 15(a)(1), “Note 1. Summary of Significant Accounting Policies” in our Annual Report on Form 10-K for the year ended December 31, 2016. We followed the same accounting policies for interim reporting.2020. The financial information included in this Quarterly Report on Form 10-Q should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2016.2020.
In the opinion of management, all adjustments, consisting of recurring accruals, have been made that are necessary to fairly state our condensed consolidated financial position, statements of income, comprehensive income, changes in shareholders’ equity, and cash flows in accordance with GAAP for the periods covered by this Quarterly Report on Form 10-Q. The results of operations for the three and nine months ended September 30, 2017April 3, 2021 are not necessarily indicative of the results to be expected for the full year ending December 31, 2017.2021.
Our fiscal quarters typically end on the Saturday closest to the end of March, June and September for the first three fiscal quarters of each year, and ends on December 31 for our fourth fiscal quarter. As a result of using fiscal quarters for the first three quarters combined with leap years, our first and fourth fiscal quarters can range between 12 1/2 weeks to 13 1/2 weeks while the second and third fiscal quarters remain at a constant 13 weeks per fiscal quarter.
Certain reclassifications have been made to prior period amounts to conform to the current year’s presentation.
Use of Estimates
Certain amounts and disclosures included in the unaudited condensed consolidated financial statements requiresrequire management to make estimates and judgments that affect the amounts of assets, liabilities (including forward loss reserves)contract liabilities), revenues and expenses, and related disclosures of contingent assets and liabilities. These estimates are based on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates.

Supplemental Cash Flow Information
(Dollars in thousands)
Three Months Ended
April 3,
2021
March 28,
2020
Interest paid$2,544 $3,523 
Taxes (refunded) paid, net$(30)$33 
Non-cash activities:
     Purchases of property and equipment not paid$540 $464 
8

  
(In thousands)
Nine Months Ended
  September 30,
2017
 October 1,
2016
Interest paid $4,867
 $5,283
Taxes paid $1,969
 $5,539
Non-cash activities:    
     Purchases of property and equipment not paid $890
 $687
Table of Contents
Earnings Per Share
Basic earnings per share are computed by dividing income available to common shareholders by the weighted-average number of common shares outstanding in each period. Diluted earnings per share areis computed by dividing income available to common shareholders by the weighted-average number of common shares outstanding, plus any potentialpotentially dilutive shares that could be issued if exercised or converted into common stock in each period.
The net income and weighted-average number of common shares outstanding used to compute earnings per share were as follows:
(Dollars in thousands,
except per share data)
 
(In thousands, except per share data)
Three Months Ended
 
(In thousands, except per share data)
Nine Months Ended
Three Months Ended
 September 30,
2017
 October 1,
2016
 September 30,
2017
 October 1,
2016
April 3,
2021
March 28,
2020
Net income $4,655
 $5,014
 $10,593
 $22,425
Net income$6,695 $7,930 
Weighted-average number of common shares outstanding        Weighted-average number of common shares outstanding
Basic weighted-average common shares outstanding 11,241
 11,169
 11,276
 11,141
Basic weighted-average common shares outstanding11,791 11,610 
Dilutive potential common shares 245
 141
 280
 120
Dilutive potential common shares459 245 
Diluted weighted-average common shares outstanding 11,486
 11,310
 11,556
 11,261
Diluted weighted-average common shares outstanding12,250 11,855 
Earnings per share        Earnings per share
Basic $0.41
 $0.45
 $0.94
 $2.01
Basic$0.57 $0.68 
Diluted $0.41
 $0.44
 $0.92
 $1.99
Diluted$0.55 $0.67 
Potentially dilutive stock options and stock units to purchase common stock,awards, as shown below, were excluded from the computation of diluted earnings per share because their inclusion would have been anti-dilutive. However, these sharesawards may be potentially dilutive common shares in the future.
  
(In thousands)
Three Months Ended
 
(In thousands)
Nine Months Ended
  September 30,
2017
 October 1,
2016
 September 30,
2017
 October 1,
2016
Stock options and stock units 166
 515
 142
 617
(In thousands)
Three Months Ended
 April 3,
2021
March 28,
2020
Stock options and stock units253 
Fair Value
Assets and liabilities that are measured, recorded or disclosed at fair value on a recurring basis are categorized using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs used to determine the fair value. Level 1, the highest level, refers to the values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant observable inputs. Level 3, the lowest level, includes fair values estimated using significant unobservable inputs.
Divestitures
On January 22, 2016, we entered into an agreement,We have money market funds and completedthey are included as cash and cash equivalents. We also had interest rate cap hedge agreements for which the sale on the same date, to sell our operation located in Pittsburgh, Pennsylvania for a preliminary sales price of $38.5 million in cash. We divested this facility as part of our overall strategy to streamline operations, which included consolidating our footprint. However, the salefair value of the Pittsburgh operation did not representinterest rate cap hedge agreements was determined using pricing models that use observable market inputs as of the balance sheet date, a strategic shift inLevel 2 measurement, however, those agreements expired during our business and thus, was includedsecond quarter of 2020.
There were no transfers between Level 1, Level 2, or Level 3 financial instruments in the ongoing operating results in the condensed consolidated income statements for all periods presented. Preliminary net assets sold were $24.0 million, net liabilities sold were $4.0 million, and direct transaction costs incurred were $0.2 million, resulting in a preliminary gain on divestiture of

$18.3 million. In the fourth quarter of 2016, we finalized the sale with a final sales price of $38.6 million in cash. The final net assets sold were $24.0 million, net liabilities sold were $4.0 million, and direct transaction costs incurred were $0.3 million, resulting in a gain on divestiture of $18.3 million.
In February 2016, we entered into an agreement to sell our Huntsville, Alabama and Iuka, Mississippi (collectively, “Miltec”) operations for a preliminary sales price of $14.6 million, in cash, subject to post-closing adjustments. We divested this facility as part of our overall strategy to streamline operations, which included consolidating our footprint. However, the sale of the Miltec operation did not represent a strategic shift in our business and thus, was included in the ongoing operating results in the condensed consolidated income statements for all periods presented. We completed the sale on March 25, 2016. Preliminary net assets sold were $15.4 million, net liabilities sold were $2.6 million, and direct transaction costs incurred during the current period were $1.3 million, resulting in a preliminary gain on divestiture of $0.5 million. In the fourth quarter of 2016, we finalized the sale with a final sales price of $13.3 million in cash. The final net assets sold were $15.4 million, net liabilities sold were $2.7 million, and direct transaction costs incurred were $1.3 million, resulting in a loss on divestiture of $0.7 million.three months ended April 3, 2021.
Cash and Cash Equivalents
Cash equivalents consist of highly liquid instruments purchased with original maturities of three months or less. These assets are valued at cost, which approximates fair value, which we classify as Level 1. See Fair Value above.
Derivative Instruments
We recognize derivative instruments on our condensed consolidated balance sheets at their fair value. On the date that we enter into a derivative contract, we designate the derivative instrument as a fair value hedge, a cash flow hedge, a hedge of a net investment in a foreign operation, or a derivative instrument that will not be accounted for using hedge accounting methods. As of September 30, 2017, all of ourApril 3, 2021, we had no derivative instruments were designated as our cash flow hedges.
We record changeshedges matured in the fair valuesecond quarter of a derivative instrument that is highly effective and that is designated and qualifies as a cash flow hedge in other comprehensive income (loss), net of tax until our earnings are affected by the variability of cash flows of the underlying hedge. We record any hedge ineffectiveness and amounts excluded from effectiveness testing in current period earnings within interest expense. We report changes in the fair values of derivative instruments that are not designated or do not qualify for hedge accounting in current period earnings. We classify cash flows from derivative instruments in the condensed consolidated statements of cash flows in the same category as the item being hedged or on a basis consistent with the nature of the instrument.
When we determine that a derivative instrument is not highly effective as a hedge, we discontinue hedge accounting prospectively. In all situations in which we discontinue hedge accounting and the derivative instrument remains outstanding, we will carry the derivative instrument at its fair value on our condensed consolidated balance sheets and recognize subsequent changes in its fair value in our current period earnings.2020.
Inventories
Inventories are stated at the lower of cost or net realizable value with cost being determined using a moving average cost basis for raw materials and actual cost for work-in-process and finished goods, with units being relieved andgoods. The majority of our inventory is charged to cost of
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sales on a first-in, first-out basis.as raw materials are placed into production and the related revenue is recognized. Inventoried costs include raw materials, outside processing, direct labor and allocated overhead, adjusted for any abnormal amounts of idle facilityperformance center expense, freight, handling costs, and wasted materials (spoilage) incurred. Costs under long-term contracts are accumulated into, and removed from, inventory on the same basis as other contracts. We assess the inventory carrying value and reduce it, if necessary, to its net realizable value based on customer orders on hand, and internal demand forecasts using management’s best estimates given information currently available.
Production Cost The majority of Contracts
Production cost ofour revenues are recognized over time, however, for revenue contracts includes non-recurring production costs, such as design and engineering costs, and tooling and other special-purpose machinery necessary to build parts as specified in a contract. Production costs of contracts are recorded to cost of goods soldwhere revenue is recognized using the unitspoint in time method, inventory is not reduced until it is shipped or transfer of delivery method. We review the value of the production cost of contracts on a quarterly basis to ensure when addedcontrol to the estimated cost to complete, the value is not greater than the estimated realizable valuecustomer has occurred. Our ending inventory consists of the related contracts.raw materials, work-in-process, and finished goods.
Accumulated Other Comprehensive Loss
Accumulated other comprehensive loss, as reflected on the condensed consolidated balance sheets under the equity section, was comprised of cumulative pension and retirement liability adjustments, net of tax, and change in net unrealized gains and losses on cash flow hedges, net of tax.

Revenue Recognition
ProvisionOur customers typically engage us to manufacture products based on designs and specifications provided by the end-use customer. This requires the building of tooling and manufacturing first article inspection products (prototypes) before volume manufacturing. Contracts with our customers generally include a termination for Estimated Lossesconvenience clause.
We have a significant number of contracts that are started and completed within the same year, as well as contracts derived from long-term agreements and programs that can span several years. We recognize revenue under Accounting Standards Codification 606, “Revenue from Contracts with Customers” (“ASC 606”), which utilizes a five-step model.
The definition of a contract for us is typically defined as a customer purchase order as this is when we achieve an enforceable right to payment. The majority of our contracts are firm fixed-price contracts. The deliverables within a customer purchase order are analyzed to determine the number of performance obligations. At times, in order to achieve economies of scale and based on Contractsour customer’s forecasted demand, we may build in advance of receiving a purchase order from our customer. When that occurs, we would not recognize revenue until we have received the customer purchase order.
A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account under ASC 606. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, control is transferred and the performance obligation is satisfied. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services are highly interrelated or meet the series guidance. For contracts with multiple performance obligations, we allocate the contract transaction price to each performance obligation using our best estimate of the standalone selling price of each distinct good or service in the contract. The primary method used to estimate the standalone selling price is the expected cost plus a margin approach, under which we forecast our expected costs of satisfying a performance obligation and then add an appropriate margin for that distinct good or service.
We manufacture most products to customer specifications and the product cannot be easily modified to satisfy another customer’s order. As such, these products are deemed to have no alternative use once the manufacturing process begins. In the event the customer invokes a termination for convenience clause, we would be entitled to costs incurred to date plus a reasonable profit. Contract costs typically include labor, materials, overhead, and when applicable, subcontractor costs. For most of our products, we are building assets with no alternative use and have enforceable right to payment, and thus, we recognize revenue using the over time method.
The majority of our performance obligations are satisfied over time as work progresses. Typically, revenue is recognized over time using an input measure (i.e., costs incurred to date relative to total estimated costs at completion, also known as cost-to-cost plus reasonable profit) to determine progress. Our typical revenue contract is a firm fixed price contract, and the cost of raw materials could make up a significant amount of the total costs incurred. As such, we believe using the total costs incurred input method would be the most appropriate method. While the cost of raw materials could make up a significant amount of the total costs incurred, there is a direct relationship between our inputs and the transfer of control of goods or services to the customer.
Contract estimates are based on various assumptions to project the outcome of future events that can span multiple months or years. These assumptions include labor productivity and availability; the complexity of the work to be performed; the cost and availability of materials; and the performance of subcontractors.
As a significant change in one or more of these estimates could affect the progress completed (and related profitability) on our contracts, we review and update our contract-related estimates on a regular basis. We recognize such adjustments under the cumulative catch-up method. Under this method, the impact of the adjustment is recognized in the period the adjustment is identified. Revenue and profit in future periods of contract performance is recognized using the adjusted estimate.
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The impact of adjustments in contract estimates on our operating earnings can be reflected in either operating costs and expenses or revenue.
Net cumulative catch up adjustments on gross profit recorded were not material for both the three months ended April 3, 2021 and March 28, 2020.
Payments under long-term contracts may be received before or after revenue is recognized. When revenue is recognized before we bill our customer, a contract asset is created for the work performed but not yet billed. Similarly, when we receive payment before we ship our products to our customer, a contract liability is created for the advance or progress payment.
We record provisions for the total anticipated losses on contracts, considering total estimated costs to complete the contract compared to total anticipated revenues, in the period in which such losses are identified. The provisions for estimated losses on contracts require us to make certain estimates and assumptions, including those with respect to the future revenue under a contract and the future cost to complete the contract. Our estimate of the future cost to complete a contract may include assumptions as to improvementschanges in manufacturing efficiency, reductions in operating and material costs, and our ability to resolve claims and assertions with our customers. If any of these or other assumptions and estimates do not materialize in the future, we may be required to record additionaladjust the provisions for estimated losses on contracts. The provision for estimated losses on contracts is included as part of contract liabilities on the condensed consolidated balance sheets. As of April 3, 2021 and December 31, 2020, provision for estimated losses on contracts were $2.0 million and $2.3 million, respectively.
Production cost of contracts includes non-recurring production costs, such as design and engineering costs, and tooling and other special-purpose machinery necessary to build parts as specified in a contract. Production costs of contracts are recorded to cost of sales using the over time revenue recognition model. We review the value of the production cost of contracts on a quarterly basis to ensure when added to the estimated cost to complete, the value is not greater than the estimated realizable value of the related contracts. As of April 3, 2021 and December 31, 2020, production cost of contracts were $7.2 million and $7.0 million, respectively.
Contract Assets and Contract Liabilities
Contract assets consist of our right to payment for work performed but not yet billed. Contract assets are transferred to accounts receivable when we bill our customers. We bill our customers when we ship the products and meet the shipping terms within the revenue contract. Contract liabilities consist of advance or progress payments received from our customers prior to the time transfer of control occurs plus the estimated losses on contracts.
Contract assets and contract liabilities from revenue contracts with customers are as follows:
(Dollars in thousands)
April 3,
2021
December 31,
2020
Contract assets$173,909 $154,028 
Contract liabilities$24,257 $28,264 
The increase in our contract assets as of April 3, 2021 compared to December 31, 2020 was primarily due to a net increase of products in work in process and finished goods in the current period.
The decrease in our contract liabilities as of April 3, 2021 compared to December 31, 2020 was primarily due to a net decrease of advance or progress payments received from our customers in the current period. We recognized $7.2 million of the contract liabilities as of December 31, 2020 as revenues during the three months ended April 3, 2021.
Performance obligations are defined as customer placed purchase orders (“POs”) with firm fixed price and firm delivery dates. Our remaining performance obligations as of April 3, 2021 totaled $690.3 million. We anticipate recognizing an estimated 70% of our remaining performance obligations as revenue during the next 12 months with the remaining performance obligations being recognized in the remainder of 2022 and beyond.
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Revenue by Category
In addition to the revenue categories disclosed above, the following table reflects our revenue disaggregated by major end-use market:
(Dollars in thousands)
Three Months Ended
April 3
2021
March 28,
2020
Consolidated Ducommun
Military and space$114,127 $101,899 
Commercial aerospace35,377 60,582 
Industrial7,647 10,994 
Total$157,151 $173,475 
Electronic Systems
Military and space$81,733 $74,317 
Commercial aerospace9,724 12,809 
Industrial7,647 10,994 
Total$99,104 $98,120 
Structural Systems
Military and space$32,394 $27,582 
Commercial aerospace25,653 47,773 
Total$58,047 $75,355 
Recent Accounting Pronouncements
New Accounting Guidance Adopted in 20172021
In December 2016,October 2020, the FASB issued ASU 2016-19, “Technical Corrections and2020-10, “Codification Improvements” (“2016-19”ASU 2020-10”), which coveraffect a wide variety of Topics in the Codification. TheAccounting Standards Codification (“Codification”). ASU 2020-10, among other things, contains amendments in ASU 2016-19 represent changes to make corrections or improvements tothat improve the consistency of the Codification by including all disclosure guidance in the appropriate Disclosure Section (Section 50). Many of the amendments arose as the FASB provided an option to give certain information either on the face of the financial statements or in the notes to financial statements and that option only was included in the Other Presentation Matters Section (Section 45) of the Codification. Those amendments are not expected to have a significant effect onchange current accounting practice or create a significant administrative cost to most entities.practice. The new guidance wasis effective for usfiscal years beginning after December 15, 2020, which was our interim period beginning January 1, 2017.2021. The adoption of this standard did not have a significantmaterial impact on our condensed consolidated financial statements.
In March 2016,December 2019, the FASB issued ASU 2016-09, “Compensation - Stock Compensation2019-12, “Income Taxes (Topic 718): Improvements to Employee Share-Based Payment Accounting”740), Simplifying the Accounting for Income Taxes” (“ASU 2016-09”2019-12”), which is intended to improve the accounting for employee share-based payments.removes certain exceptions and provides guidance on various areas of tax accounting. The new guidance wasis effective for usfiscal years beginning after December 15, 2020, including interim periods within those fiscal years, which was our interim period beginning January 1, 2017.2021. The adoption of this standard did not have a significant dollarmaterial impact on our condensed consolidated financial statements.
In March 2016,August 2018, the FASB issued ASU 2016-05, “Derivatives and Hedging2018-14, “Compensation - Retirement Benefits - Defined Benefit Plans - General (Topic 815)715-20): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships”Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans” (“ASU 2016-05”2018-14”), which clarifieswill remove disclosures that a change inno longer are considered cost-beneficial, clarify the counter party to a derivative instrument designatedspecific requirements of disclosures, and add disclosure requirements identified as a hedging instrument does not require dedesignation of that hedging relationship, provided that all other hedge accounting criteria are met.relevant. The new guidance wasis effective for usfiscal years beginning after December 15, 2020, including interim periods within those fiscal years, which was our interim period beginning January 1, 2017.2021. The adoption of this standard did not have a significant impact on our condensed consolidated financial statements.
In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330)” (“ASU 2015-11”), which requires inventory within the scope of ASU 2015-11 to be measured at the lower of cost or net realizable value. Subsequent measurement is unchanged for inventory measured using last-in, first-out (“LIFO”) or the retail inventory value. The new guidance was effective for us beginning January 1, 2017. The adoption of this standard did not have a significantmaterial impact on our condensed consolidated financial statements.
Recently Issued Accounting Standards
In August 2017,2020, the FASB issued ASU 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging” (“ASU 2017-12”), which intends to improve and simplify accounting rules around hedge accounting. ASU 2017-12 refines and expands hedge accounting for both financial (i.e., interest rate) and commodity risks. In addition, it creates more transparency around how economic results are presented, both on the face of the financial statements and in the footnotes. The new guidance is effective for annual periods beginning after December 15, 2018, including interim periods within those annual periods, which will be our interim period beginning January 1, 2019. Early adoption is permitted, including adoption in any interim period after the issuance of ASU 2017-12. We are evaluating the impact of this standard.
In May 2017, the FASB issued ASU 2017-09, “Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting” (“ASU 2017-09”), which provides clarity on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting under Topic 718. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. Early adoption is permitted, including adoption in any interim period. The amendments should be applied prospectively to an award modified on or after the adoption date. We are evaluating the impact of this standard.
In March 2017, the FASB issued ASU 2017-07, “Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Costs” (“ASU 2017-07”), which require an employer to report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. If a separate line item or items are used to present the other components of net benefit cost, that line item or items must be appropriately described. If a separate line item or items are not used, the line item or items used in the income statement to present the other components of net benefit cost must be disclosed. The amendments also allow only the service cost component to be eligible for capitalization when applicable. The new guidance is effective for annual periods beginning after

December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. We are evaluating the impact of this standard.
In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill2020-06, “Debt with Conversion and Other (Topic 350): Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”), which simplifies the subsequent measurement of goodwill, the amendments eliminate Step Two from the goodwill impairment test. The annual, or interim, goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount. An impairment charge should be recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. In addition, income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit should be considered when measuring the goodwill impairment loss, if applicable. The amendments also eliminate the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if it fails that qualitative test, to perform Step Two of the goodwill impairment test. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The new guidance is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We are evaluating the impact of this standard.
In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business” (“ASU 2017-01”), which clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of businesses. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. We are evaluating the impact of this standard.
In December 2016, the FASB issued ASU 2016-20, “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers” (“ASU 2016-20”), which cover a variety of Topics in the Codification related to the new revenue recognition standard (ASU 2014-09). The amendments in ASU 2016-20 represent changes to make minor corrections or minor improvements to the Codification that are not expected to have a significant effect on current accounting practice or create a significant administrative cost to most entities. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. We are evaluating the impact of this standard.
In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments” (“ASU 2016-15”), which addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (“COLIs”) (including bank-owned life insurance policies [“BOLIs”]); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. We are evaluating the impact of this standard.
In May 2016, the FASB issued ASU 2016-12, “Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients” (“ASU 2016-12”), which amends the guidance in the new revenue standard on collectability, noncash consideration, presentation of sales tax, and transition. The amendments are intended to address implementation issues and provide additional practical expedients to reduce the cost and complexity of applying the new revenue standard. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods with that reporting period. We are evaluating the impact of this standard.
In May 2016, the FASB issued ASU 2016-11, “Revenue Recognition (Topic 605)Options (Subtopic 470-20) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of- Contracts in Entity’s Own Equity (Subtopic 815-40) - Accounting Standards Updates 2014-09for Convertible Instruments and 2014-06 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting”Contracts in an Entity’s Own Equity” (“ASU 2016-11”2020-06”), which clarifies revenue and expense recognition for freight costs, accounting for shipping and handling fees and costs, and accounting for consideration given by a vendor to a customer. The new guidance is effective for annual periods beginning after December 15, 2017,simplifies reporting or provides clarification on various topics, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods withclarification that reporting period. We are evaluatingan entity should use the impact of this standard.
In April 2016,weighted-average share count from each quarter when calculating the FASB issued ASU 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing” (“ASU 2016-10”), which clarifies the following two aspects of Topic 606: (a) identifying performance obligations; and (b) the licensing implementation guidance. The amendments do not change the core principle of

the guidance in Topic 606. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods with that reporting period. We are evaluating the impact of this standard.
In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which requires lessees to present right-of-use assets and lease liabilities on the balance sheet. Lessees are required to apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements.year-to-date weighted-average share count. The new guidance is effective for fiscal years beginning after December 15, 2018,2021, including interim periods within those fiscal years, which will be our interim period beginning January 1, 2019.2022. Early adoption is
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permitted. We are evaluating the impact of this standard and currently anticipate it will impact our condensed consolidated financial statements.standard.
In May 2014,March 2020, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers2020-04, “Reference Rate Reform (Topic 606)”848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (“ASU 2014-09”2020-04”), which outlinesprovides optional guidance for a new, single comprehensive modellimited time for entitiescontracts that reference London Interbank Offered Rate (“LIBOR”), to useease the potential burden in accounting for, revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model providesor recognizing the effects, of reference rate reform on financial reporting as a five-step analysis in determining when and how revenue is recognized. It requires entities to exercise judgment when considering the termsresult of the contract(s) which include (i) identifying the contract(s) with the customer, (ii) identifying the separate performance obligations in the contract, (iii) determining the transaction price, (iv) allocating the transaction price to the separate performance obligations, and (v) recognizing revenue when each performance obligation is satisfied. Thus, it depicts the transfercessation of promised goods or services to customers in an amount that reflects the consideration an entity expects to receive in exchange for those goods or services. Companies have the option of applying the provisions of ASU 2014-09 either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying this guidance recognized at the date of initial application. In August 2015, the FASB issued ASU 2015-14, “Revenue From Contracts With Customers (Topic 606)” (“ASU 2015-14”), which deferred the effective date of ASU 2014-09 by one year to annual periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period.LIBOR. The new guidance is effective for us beginning January 1, 2018 and provides us additionalat any time to evaluateafter March 12, 2020 but no later than December 31, 2022. We are evaluating the impact that ASU 2014-09 will have on our condensed consolidated financial statements. We are in the process of completing the implementation phase of the project. We have noted that under ASU 2014-09, the percentage of completion, unit of delivery method of recognizing revenue is no longer a viable method for us and production costs will generally not be deferred. Instead, revenue will be recognized as the customer obtains control of the goods and services promised in the contract (i.e., performance obligations). Given the nature of our products and terms and conditions in the majority of our contracts, our customer obtains control as we perform work under the contract. As such, most of our revenues will be recognized sooner as a result of changing to an over time method (i.e., cost-to-cost plus a reasonable profit) from a point-in-time method, which is our current method for recognizing revenue. This will result in eliminating the majority of our work-in-process and finished goods inventory and a significant increase in unbilled accounts receivables (i.e., contract assets). This change will also impact our information technology systems, systems of internal controls over financial reporting, and certain accounting policies, requiring the usage of more judgement in determining our revenue recognition. Further, we have selected a software solution and are in the process of implementing the software solution to comply with this new accounting standard. Finally, we will adopt the new accounting standard using the modified retrospective method, under which the cumulative effect of initially applying the new guidance is recognized as an adjustment to certain captions on the balance sheet, including the opening balance of retained earnings in the first quarter of 2018.


Note 2. Business Combination
On September 11, 2017, we acquired 100.0% of the outstanding equity interests of Lightning Diversion Systems, LLC (“LDS”), a privately-held, worldwide leader in lightning protection systems serving the aerospace and defense industries, located in Huntington Beach, California. The acquisition of LDS is part of our strategy to enhance revenue growth by focusing on advanced proprietary technology on various aerospace and defense platforms.
The purchase price for LDS was $60.0 million, net of cash acquired, all payable in cash. Upon the closing of the transaction, we paid $61.4 million with the remaining $0.6 million paid in October 2017, subsequent to our quarter ended September 30, 2017. We preliminarily allocated the gross purchase price of $62.0 million to the assets acquired and liabilities assumed at estimated fair values. The excess of the purchase over the aggregate fair values is recorded as goodwill. The allocation is subject to revision as the estimates of fair value of current assets, non-current assets, identifiable intangible assets, and current liabilities are based on preliminary information and are subject to refinement. We are in the process of reviewing third party valuations of certain assets.

The following table summarizes the estimated fair value of the assets acquired and liabilities assumed at the date of acquisition (in thousands):
  
Estimated
Fair Value
Cash $2,223
Accounts receivable 918
Inventories 1,732
Other current assets 54
Property and equipment 138
Intangible assets 22,400
Goodwill 34,881
Total assets acquired 62,346
Current liabilities (325)
Total liabilities assumed (325)
Total preliminary purchase price allocation $62,021
  
Useful Life
(In years)
 
Estimated
Fair Value
(In thousands)
Intangible assets:    
Customer relationships 15 $21,100
Trade name 15 1,300
  
 $22,400
The intangible assets acquired of $22.4 million were preliminarily determined based on the estimated fair values using valuation techniques consistent with the income approach to measure fair value. The useful lives were estimated based on the underlying agreements or the future economic benefit expected to be received from the assets. The fair values of the identifiable intangible assets were estimated using several valuation methodologies, which represented Level 3 fair value measurements. The value for customer relationships was estimated based on a multi-period excess earnings approach, while the value for the trade name was assessed using the relief from royalty methodology. Further, we analyzed the technology acquired and concluded no fair value should be assigned to it.
The goodwill of $34.9 million arising from the acquisition is preliminarily attributable to the benefits we expect to derive from expected synergies from the transaction, including complementary products that will enhance our overall product portfolio, opportunities within new markets, and an acquired assembled workforce. All the goodwill was assigned to the Electronic Systems segment. Since the LDS acquisition, for tax purposes, was deemed an asset acquisition, the goodwill recognized is deductible for income tax purposes.
Acquisition related transaction costs are not included as components of consideration transferred but have been expensed as incurred. Total acquisition-related transaction costs incurred by us were $0.3 million in both the three months and nine months ended September 30, 2017 and charged to selling, general and administrative expenses.
LDS’ results of operations have been included in our condensed consolidated statements of income since the date of acquisition as part of the Electronic Systems segment. Pro forma results of operations of the LDS acquisition during the three and nine months ended September 30, 2017 have not been presented as the effect of the LDS acquisition was not material to our financial results.

Note 3. Restructuring Activities
Summary of 2015 Restructuring Plans
In September 2015, management approved and commenced implementation of several restructuring actions, including organizational re-alignment, consolidation and relocation of the New York facilities that was completed in December 2015, closure of the Houston facility that was completed in December 2015, and closure of the St. Louis facility that was completed in April 2016, all of which are part of our overall strategy to streamline operations. We have recorded cumulative expenses of $2.2 million for severance and benefits and loss on early exit from leases, which were charged to selling, general and administrative expenses. We do not expect to record additional expenses related to these restructuring plans.
As of September 30, 2017, we have accrued $0.4 million for loss on early exit from a lease in the Structural Systems segment.

Summary of 2016 Restructuring Plan
In May 2016, management approved and commenced implementation of the closure of one of our Tulsa facilities that was completed in June 2016, and was part of our overall strategy to streamline operations. We have recorded cumulative expenses of $0.2 million for severance and benefits and loss on early exit from a lease, which were charged to selling, general and administrative expenses. We do not expect to record additional expenses related to this restructuring plan.
As of September 30, 2017, we have accrued $0.1 million for loss on early exit from a lease in the Electronic Systems segment.
Our restructuring activities in the nine months ended September 30, 2017 were as follows (in thousands):
  December 31, 2016 Nine Months Ended September 30, 2017 September 30, 2017
  Balance Charges Cash Payments Change in Estimates Balance
Lease termination $654
 $
 $(235) $64
 $483
Ending balance $654
 $
 $(235) $64
 $483
Summary of 2017 Restructuring Plan
Subsequent to our quarter ended September 30, 2017, in November 2017, management approved and commenced a restructuring plan that is expected to increase operating efficiencies. We currently estimate this initiative will result in $22.0 million to $25.0 million in total pre-tax restructuring charges through 2018, with an estimate of $10.5 million to be recorded during the fourth quarter of 2017. Of these charges, we estimate $9.0 million to $10.0 million are expected to be cash payments for employee separation and other consolidation related expenses with the remaining $13.0 million to $15.0 million expected to be non-cash charges for write-down of inventory and impairment of long-lived assets. On an annualized basis, beginning in 2019, we estimate these restructuring actions will result in total savings of $14.0 million.


Note 4. Fair Value Measurements
Fair value is defined as the price that would be received for an asset or the price that would be paid to transfer a liability (an exit price) in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. The accounting standard provides a framework for measuring fair value using a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. This hierarchy requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Three levels of inputs that may be used to measure fair value are as follows:
Level 1 - Quoted prices (unadjusted) in active markets for identical assets or liabilities;
Level 2 - Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and
Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
Our financial instruments consist primarily of cash and cash equivalents and interest rate cap derivatives designated as cash flow hedging instruments. Assets and liabilities measured at fair value on a recurring basis were as follows (in thousands):
  As of September 30, 2017 As of December 31, 2016
  Fair Value Measurements Using   Fair Value Measurements Using  
  Level 1 Level 2 Level 3 Total Balance Level 1 Level 2 Level 3 Total Balance
Assets                
Money market funds(1)
 $96
 $
 $
 $96
 $3,751
 $
 $
 $3,751
Interest rate cap hedges(2)
 
 122
 
 122
 
 553
 
 553
Total Assets $96
 $122
 $
 $218
 $3,751
 $553
 $
 $4,304
(1) Included as cash and cash equivalents.
(2) Interest rate cap hedge premium included as other current assets and other assets.

The fair value of the interest rate cap hedge agreements was determined using pricing models that use observable market inputs as of the balance sheet date, a Level 2 measurement.
There were no transfers between Level 1, Level 2, or Level 3 financial instruments in the three months ended September 30, 2017.

Note 5. Financial Instruments
Derivative Instruments and Hedging Activities
We periodically enter into cash flow derivative transactions, such as interest rate cap agreements, to hedge exposure to various risks related to interest rates. We assess the effectiveness of the interest rate cap hedges at inception of the hedge. We recognize all derivatives at their fair value. For cash flow designated hedges, the effective portion of the changes in fair value of the derivative contract are recorded in accumulated other comprehensive income (loss), net of taxes, and are recognized in net earnings at the time earnings are affected by the hedged transaction. Adjustments to record changes in fair values of the derivative contracts that are attributable to the ineffective portion of the hedges, if any, are recognized in earnings. We present derivative instruments in our condensed consolidated statements of cash flows’ operating, investing, or financing activities consistent with the cash flows of the hedged item.
Our interest rate cap hedges were designated as cash flow hedges and deemed highly effective at the inception of the hedges. These interest rate cap hedges mature concurrently with the term loan in June 2020. During the three months ended September 30, 2017, the interest rate cap hedges continued to be highly effective and zero, net of tax, was recognized in other comprehensive income. No amount was recorded in the condensed consolidated income statements during the three months ended September 30, 2017. See Note 9.
The recorded fair value of the derivative financial instruments on the condensed consolidated balance sheets were as follows:
  
(In thousands)
September 30, 2017
 
(In thousands)
December 31, 2016
  Other Current Assets Other Long Term Assets Other Current Assets Other Long Term Assets
Derivatives Designated as Hedging Instruments        
Cash Flow Hedges:        
Interest rate cap premiums $
 $122
 $
 $553
Total Derivatives $
 $122
 $
 $553

Note 6. Inventories
Inventories consisted of the following:
(Dollars in thousands)
April 3,
2021
December 31,
2020
Raw materials and supplies$121,756 $107,983 
Work in process12,502 15,895 
Finished goods4,029 5,345 
Total$138,287 $129,223 
  (In thousands)
  September 30,
2017
 December 31,
2016
Raw materials and supplies $70,787
 $64,650
Work in process 66,689
 56,806
Finished goods 12,275
 9,180
  149,751
 130,636
Less progress payments 12,594
 10,740
Total $137,157
 $119,896

We net progress payments from customers related to inventory purchases against inventories on the condensed consolidated balance sheets.

Note 7.3. Goodwill
We perform our annual goodwill impairment test duringas of the first day of the fourth quarter. If certain factors occur, we may have to perform an impairment test prior to the fourth quarter including significant under performance of our business relative to expected operating results, significant adverse economic and industry trends, significant decline in our market capitalization for an

extended period of time relative to net book value, a decision to divest individual businesses within a reporting unit, or a decision to group individual businesses differently.differently, we may be required to perform an interim impairment test prior to the fourth quarter.
We may use either a qualitative or quantitative approach when testing a reporting unit’s goodwill for impairment. The qualitative approach for potential impairment analysis is performed to determine whether it is more likely than not that the fair value of a reporting unit was less than its carrying amount.
The quantitative approach for potential impairment analysis is performed by comparing the fair value of a reporting unit to its carrying value, including goodwill. Fair value is estimated by management using a combination of the income approach (which is based on a discounted cash flow model) and market approach. Management’s cash flow projections include significant judgments and assumptions, including the amount and timing of expected cash flows, long-term growth rates, and discount rates. The cash flows used in the discounted cash flow model are based on our best estimate of future revenues, gross margins, and adjusted after-tax earnings. If any of these assumptions are incorrect, it will impact the estimated fair value of a reporting unit. The market approach also requires significant management judgment in selecting comparable business acquisitions and the transaction values observed and its related control premiums.
For our most recent annual goodwill impairment test of our Electronic Systems reporting unit as of the first day of the fourth quarter of 2020, we used a qualitative assessment and determined it was not more likely than not that the fair value of the reporting unit was less than its carrying amount. For our most recent annual goodwill impairment test of our Structural Systems reporting unit as of the first day of the fourth quarter of 2020, we performed a step one goodwill impairment test where the fair value of our Structural Systems reporting unit exceeded its carrying value by 69% and thus, goodwill was not deemed to be impaired. While our business continues to be negatively impacted during the three months ended April 3, 2021 as a result of the COVID-19 pandemic, no material adverse factors/changes have occurred since the fourth quarter of 2020 that would require us to perform another qualitative assessment. As such, for the first quarter of 2021, it was also not more likely than not that the fair values of the reporting units were less than their carrying amounts and thus, the respective goodwill amounts were not deemed to be impaired.
The carrying amounts of our goodwill all in our Electronic Systems segment, were as follows:
(Dollars in thousands)
Electronic
Systems
Structural
Systems
Consolidated
Ducommun
Gross goodwill$199,157 $53,395 $252,552 
Accumulated goodwill impairment(81,722)(81,722)
Balance at December 31, 2020$117,435 $53,395 $170,830 
Balance at April 3, 2021$117,435 $53,395 $170,830 
13


  (In thousands)
Gross goodwill $164,276
Accumulated goodwill impairment (81,722)
Balance at December 31, 2016 82,554
Goodwill from acquisition during the period 34,881
Balance at September 30, 2017 $117,435


Note 8.4. Accrued and Other Liabilities
The components of accrued and other liabilities were as follows:
(Dollars in thousands)
April 3,
2021
December 31,
2020
Accrued compensation$15,386 $28,432 
Accrued income tax and sales tax558 80 
Other12,489 12,014 
Total$28,433 $40,526 
  (In thousands)
  September 30,
2017
 December 31,
2016
Accrued compensation $17,259
 $15,455
Accrued income tax and sales tax 1,161
 332
Customer deposits 3,798
 3,204
Provision for forward loss reserves 2,025
 4,780
Other 5,556
 5,508
Total $29,799
 $29,279


Note 9.5. Long-Term Debt
Long-term debt and the current period interest rates were as follows:
(Dollars in thousands)
April 3,
2021
December 31,
2020
Term loans$292,962 $295,638 
Revolving credit facility20,000 25,000 
Total debt312,962 320,638 
Less current portion7,000 7,000 
Total long-term debt, less current portion305,962 313,638 
Less debt issuance costs - term loans1,618 1,716 
Total long-term debt, net of debt issuance costs - term loans$304,344 $311,922 
Debt issuance costs - revolving credit facility (1)
$1,421 $1,515 
Weighted-average interest rate3.16 %3.59 %
  (In thousands)
  September 30,
2017
 December 31,
2016
Term loan $160,000
 $170,000
Revolving credit facility 64,700
 
Other debt (fixed 5.41%) 
 3
Total debt 224,700
 170,003
Less current portion 
 3
Total long-term debt 224,700
 170,000
Less debt issuance costs 2,306
 3,104
Total long-term debt, net of debt issuance costs $222,394
 $166,896
Weighted-average interest rate 3.43% 3.25%
(1) Included as part of other assets.

OurIn December 2019, we completed the refinancing of a portion of our existing debt by entering into a new revolving credit facility consists of(“2019 Revolving Credit Facility”) to replace the then existing revolving credit facility that was entered into in November 2018 (“2018 Revolving Credit Facility”) and entered into a $275.0 million senior securednew term loan which matures on June 26, 2020 (“2019 Term Loan”), and. The 2019 Revolving Credit Facility is a $200.0$100.0 million senior secured revolving credit facility (“that matures on December 20, 2024 replacing the $100.0 million 2018 Revolving Credit Facility”), whichFacility that would have matured on November 21, 2023. The 2019 Term Loan is a $140.0 million senior secured term loan that matures on June 26, 2020December 20, 2024. We also have an existing $240.0 million senior secured term loan that was entered into in November 2018 that matures on November 21, 2025 (“2018 Term Loan”). The original amounts available under the 2019 Revolving Credit Facility, 2019 Term Loan, and 2018 Term Loan (collectively, the “Credit Facilities”). in aggregate, totaled $480.0 million.
The Credit Facilities bear2019 Term Loan bears interest, at our option, at a rate equal to either (i) the Eurodollar Rate (defined as LIBOR)the London Interbank Offered Rate [“LIBOR”]) plus an applicable margin ranging from 1.50% to 2.75%2.50% per year or (ii) the Base Rate (defined as the highest of [a] Federal Funds Rate plus 0.50%, [b] Bank of America’s prime rate, and [c] the Eurodollar Rate plus 1.00%) plus an applicable margin ranging from 0.50% to 1.75%1.50% per year, in each case based upon the consolidated total net adjusted leverage ratio.ratio, typically payable quarterly. In addition, the 2019 Term Loan requires installment payments of 1.25% of the original outstanding principal balance of the 2019 Term Loan amount on a quarterly basis, on the last day of the calendar quarter. For the three months ended April 3, 2021, we made the required quarterly payment of $1.8 million.
The 2019 Revolving Credit Facility bears interest, at our option, at a rate equal to either (i) the Eurodollar Rate (defined as LIBOR) plus an applicable margin ranging from 1.50% to 2.50% per year or (ii) the Base Rate (defined as the highest of [a] Federal Funds Rate plus 0.50%, [b] Bank of America’s prime rate, and [c] the Eurodollar Rate plus 1.00%) plus an applicable margin ranging from 0.50% to 1.50% per year, in each case based upon the consolidated total net adjusted leverage ratio, typically payable quarterly. The undrawn portionsportion of the commitmentscommitment of the 2019 Revolving Credit Facilities areFacility is subject to a commitment fee ranging from 0.175% to 0.300%0.275%, based upon the consolidated total net adjusted leverage ratio. However, the 2019 Revolving Credit Facility does not require any principal installment payments.
The 2018 Term Loan bears interest, at our option, at a rate equal to either (i) the Eurodollar Rate (defined as LIBOR plus an applicable margin ranging from 3.75% to 4.00% per year or (ii) the Base Rate (defined as the highest of [a] Federal Funds Rate plus 0.50%, [b] Bank of America’s prime rate, and [c] the Eurodollar Rate plus 1.00%) plus an applicable margin ranging from
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3.75% to 4.00% per year, in each case based upon the consolidated total net adjusted leverage ratio, typically payable quarterly. In addition, the 2018 Term Loan required installment payments of 0.25% of the outstanding principal balance of the 2018 Term Loan amount on a quarterly basis.
Further, under the Credit Facilities, if we exceed the annual excess cash flow threshold, we are required to make an annual additional principal payment based on the consolidated adjusted leverage ratio. The annual mandatory prepaymentsexcess cash flow payment is based on (i) 50% of amounts outstanding under the Term Loan. The mandatory prepayments will be made quarterly,excess cash flow amount if the adjusted leverage ratio is greater than 3.25 to 1.0, (ii) 25% of the excess cash flow amount if the adjusted leverage ratio is less than or equal to 5.0% per year3.25 to 1.0 but greater than 2.50 to 1.0, and (iii) zero percent of the original aggregate principalexcess cash flow amount duringif the first two

years and increaseconsolidated adjusted leverage ratio is less than or equal to 7.5% per year during2.50 to 1.0. During the third year, and increase to 10.0% per year duringthree months ended April 3, 2021, we made the fourth year and fifth years, with the remaining balance payable on June 26, 2020. The loans under the Revolving Credit Facility are due on June 26, 2020.required 2020 annual excess cash flow payment of $0.9 million. As of September 30, 2017,April 3, 2021, we were in compliance with all covenants required under the Credit Facilities.
During the three months ended April 3, 2021, we made net voluntary prepayments of $5.0 million on the 2019 Revolving Credit Facility.
In addition,conjunction with entering into the 2019 Revolving Credit Facility and the 2019 Term Loan, we incurred $4.8drew down the entire $140.0 million on the 2019 Term Loan and used those proceeds to pay off and close the 2018 Revolving Credit Facility of $58.5 million, paid down a portion of the 2018 Term Loan of $56.0 million, paid the accrued interest associated with the amounts being paid down on the 2018 Revolving Credit Facility and 2018 Term Loan, paid the fees related to this transaction, and the remainder available for general corporate purposes. The $56.0 million pay down on the 2018 Term Loan paid all the required quarterly installment payments on the 2018 Term Loan until maturity.
The 2019 Term Loan and 2018 Term Loan were considered a modification of debt issuance costs relatedand thus, no gain or loss was recorded. Instead, the new fees paid to the Credit Facilities and those costslenders of $0.6 million were capitalized and are being amortized over the five year life of the Credit Facilities.
On July 14, 2017, we entered into a technical amendment2019 Term Loan. The remaining debt issuance costs related to the Credit Facilities (“First Amendment”) which provides more flexibility to close certain qualified acquisitions permitted under the Credit Facilities.
We made voluntary principal prepayments of zero and $10.0 million under the2018 Term Loan during the three and nine months ended September 30, 2017, respectively.
On September 11, 2017, we acquired LDS for a purchase price of $60.0$1.5 million net of cash acquired, all payable in cash. Upon the closingas of the transaction, we paid $61.4 million in cash by drawing down on themodification date will continue to be amortized over its remaining life.
The 2019 Revolving Credit Facility. The remaining $0.6 million was paid in October 2017 in cash, also by drawing down onFacility that replaced the 2018 Revolving Credit Facility. See Note 2Facility was considered an extinguishment of debt except for further information.the portion related to the creditors that were part of both the 2019 Revolving Credit Facility and the 2018 Revolving Credit Facility and in which case, it was considered a modification of debt. As a result, we expensed the portion of the unamortized debt issuance costs related to the 2018 Revolving Credit Facility that was considered an extinguishment of debt of $0.5 million. In addition, the new fees paid to the lenders of $0.5 million as part of the 2019 Revolving Credit Facility were capitalized and are being amortized over its remaining life. Further, the remaining debt issuance costs related to the 2018 Revolving Credit Facility of $1.1 million as of the modification date will also be amortized over its remaining life.
As of September 30, 2017,April 3, 2021, we had $134.5$79.8 million of unused borrowing capacity under the 2019 Revolving Credit Facility, after deducting $64.7 million for draw down on the Revolving Credit Facility and $0.8$0.2 million for standby letters of credit.
The Credit Facilities were entered into by us (“Parent Company”) and guaranteed by all of our domestic subsidiaries, other than one subsidiary2 subsidiaries that were considered minor (“Subsidiary Guarantors”) that was considered minor.. The Subsidiary Guarantors jointly and severally guarantee the Credit Facilities. The Parent Company has no independent assets or operations and the Subsidiary Guarantors jointly and severally guarantee, on a senior unsecured basis, the Credit Facilities. Therefore,therefore, no condensed consolidating financial information for the Parent Company and its subsidiaries are presented.
In October 2015, we entered into interest rate cap hedges designated as cash flow hedges with a portion of these interest rate cap hedges maturing on a quarterly basis, and a final quarterly maturity datesdate of June 2020, and in aggregate, totaling $135.0 million of our debt. We paid a total of $1.0 million in connection with entering into the interest rate cap hedges. See Note 5 for further discussion.
In December 2016, we entered into an agreement to purchase $9.9 millionThe interest rate cap hedges matured during our second quarter of industrial revenue bonds (“IRBs”) issued by the city of Parsons, Kansas (“Parsons”)2020 and concurrently, sold $9.9 million of property and equipment (“Property”) to Parsons as well as entered into a lease agreement to lease the Property from Parsons (“Lease”) with lease payments totaling $9.9 million over the lease term. The sale of the Property and concurrent lease back of the Property did not meet the sale-leaseback accounting requirements as a result of our continuous involvement with the Property and thus, the $9.9 million in cash received from Parsons was not recorded as a sale but as a financing obligation. Further, the Lease included a right of offset and thus, the financing obligation of $9.9 million was offset against the $9.9 million of IRBs assets and presented net on the condensed consolidated balance sheets with no impactsuch, all remaining amounts related to the condensed consolidated income statements or condensed consolidated cash flow statements.

Note 10. Shareholders’ Equity
We are authorized to issue five million shares of preferred stock. At September 30, 2017interest rate cap hedges were fully amortized and December 31, 2016, no preferred shares were issued or outstanding.
Note 11. Employee Benefit Plans
The components of net periodic pension expense were as follows:
  (In thousands) (In thousands)
  Three Months Ended Nine Months Ended
  September 30,
2017
 October 1,
2016
 September 30,
2017
 October 1,
2016
Service cost $133
 $133
 $398
 $399
Interest cost 332
 341
 997
 1,025
Expected return on plan assets (382) (370) (1,147) (1,111)
Amortization of actuarial losses 202
 191
 607
 572
Net periodic pension cost $285
 $295
 $855
 $885

The components of the reclassifications of net actuarialunrealized gains and losses fromrecorded in accumulated other comprehensive loss to net income for the three and nine months ended September 30, 2017 were as follows:also realized at that time.

  (In thousands)
  Three Months Ended Nine Months Ended
  September 30,
2017
 September 30,
2017
Amortization of actuarial losses - total before tax (1)
 $(202) $(607)
Tax benefit 74
 225
Net of tax $(128) $(382)
(1)The amortization expense is included in the computation of periodic pension cost and is a decrease to net income upon reclassification from accumulated other comprehensive loss.

Note 12.6. Indemnifications
We have made guarantees and indemnities under which we may be required to make payments to a guaranteed or indemnified party, in relation to certain transactions, including revenue transactions in the ordinary course of business. In connection with certain facilityperformance center leases, we have indemnified our lessors for certain claims arising from the facilityperformance center or the lease. We indemnify our directors and officers to the maximum extent permitted under the laws of the State of Delaware.
However, we have a directors and officers insurance policy that may reduce our exposure in certain circumstances and may enable us to recover a portion of future amounts that may be payable, if any. The duration of the guarantees and indemnities varyvaries and, in many cases areis indefinite but subject to statutesstatute of limitations. The majority of guarantees and indemnities do not provide any limitations of the maximum potential future payments we could be obligated to make. Historically, payments related to these guarantees and indemnities have been immaterial. We estimate the fair value of our indemnification obligations as insignificant based on this history and insurance coverage and have, therefore, not recorded any liability for these guarantees and indemnities onin the accompanying condensed consolidated balance sheets.
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Note 13.7. Income Taxes
The provision for income taxes is determined using an estimated annual effective tax rate, which is generally less than the U.S. federal statutory rate, primarily due to research and development (“R&D”) tax credits and deductions available for domestic production activities.credits. Our effective tax rate may be subject to fluctuations during the year as new information is obtained, which may affect the assumptions used to estimate the annual effective tax rate, including factors such as expected utilization of R&D tax credits, valuation allowances against deferred tax assets, the recognition or derecognition of tax benefits related to uncertain tax positions, and changes in or the interpretation of tax laws in jurisdictions where we conduct business. Also, excess tax benefits and tax detriments related to our equity compensation recognized in the income statement could result in fluctuations in our effective tax rate period-over-period depending on the volatility of our stock price, number of restricted or performance stock units that vests, and stock options exercised during the period. We recognize deferred tax assets and liabilities, using enacted tax rates, for temporary differences between the financial reporting basis and the tax basis of our assets and liabilities along with net operating loss and tax credit carryovers.
We record a valuation allowance against our deferred tax assets to reduce the net carrying value to an amount that we believe is more likely than not to be realized. When we establish or reduce our valuation allowances against our deferred tax assets, the provision for income taxes will increase or decrease, respectively, in the period when that determination is made.
We recorded income tax expense of $0.9$1.1 million (effective tax rate of 16.8%) for the three months ended September 30, 2017April 3, 2021 compared to $1.2$1.5 million (effective tax rate of 19.8%) for the three months ended October 1, 2016.March 28, 2020. The decrease in income tax expense for the effectivefirst quarter of 2021 compared to the first quarter of 2020 was primarily due to lower pre-tax income for the first quarter of 2021 compared to the first quarter of 2020 and higher discrete tax ratebenefits recognized in the first quarter of 2021 for net tax windfalls related to stock-based compensation.
We evaluated the amendments in ASU 2019-12 for the three months ended September 30, 2017 compared toApril 3, 2021 and determined they do not have an impact on our income taxes.
On March 11, 2021, the three months ended October 1, 2016 was primarily due to tax benefits recognized from additional U.S. Federal researchenacted the American Rescue Plan Act of 2021 (“Rescue Plan”) aimed at mitigating the continuing effects of the COVID-19 pandemic. We considered the provisions of the Rescue Plan and development tax credits. FASB ASU 2016-09 became effective beginning January 1, 2017 and required all the tax effects related to share-based payments be recorded through thedetermined they do not have a material impact on our income statement. This could result in fluctuations in our effective tax rate from period to period, depending on the number of awards exercised and/or vested in the quarter as well as the volatility of our stock price. During the current year three month period, we recognized tax benefits from deductions of share-based payments in excess of compensation cost recognized for financial reporting purposes of $0.1 million, which decreased our effective tax rate by 0.6%.
We recorded income tax expense of $2.1 million (effective tax rate of 16.4%) for the nine months ended September 30, 2017 compared to $9.9 million (effective tax rate of 30.5%) for the nine months ended October 1, 2016. The decrease in the effective tax rate for the nine months ended September 30, 2017 compared to the nine months ended October 1, 2016 was primarily due to the preliminary gain on divestitures of our Pittsburgh and Miltec operations of $18.8 million, which resulted in a higher state tax liability, compared to the current year nine month period. In addition, during the current year nine month period, we

recognized tax benefits from deductions of share-based payments in excess of compensation cost recognized for financial reporting purposes of $0.6 million, which decreased the effective tax rate by 4.8%, and we recognized additional tax benefits from U.S. Federal research and development tax credits.taxes.
Our total amount of unrecognized tax benefits was $3.7 million and $3.0$4.1 million as of September 30, 2017both April 3, 2021 and December 31, 2016, respectively.2020. If recognized, $2.4 million would affect the effective tax rate. We record interest and penalty charges, if any, related to uncertain tax positions as a component of tax expense and unrecognized tax benefits. The amounts accrued for interest and penalty charges as of April 3, 2021 and December 31, 2020 were not significant. We do not reasonably expect significant increases or decreases to ourthe total amount of unrecognized tax benefits to increase or decrease by a material amount in the next twelve months.
In 2016,We file U.S. Federal and state income tax returns. We are subject to examination by the Internal Revenue Service (“IRS”) commenced an audit of our 2014for tax years after 2016 and 2015by state taxing authorities for tax years. Althoughyears after 2015. While we are no longer subject to examination prior to those periods, carryforwards generated prior to those periods may still be adjusted upon examination by the outcome of tax examinations cannotIRS or state taxing authority if they either have been or will be predicted with certainty, weused in a subsequent period. We believe we have adequately accrued for tax deficiencies or reductions in tax benefits, if any, that could result from the examination and all open audit years.


Note 14.8. Commitments and Contingencies
In December 2020, a representative action under California’s Private Attorneys General Act was filed against us in the Superior Court for the State of California, County of San Bernardino. We received service of process of this complaint on January 28, 2021. The complaint alleges violations of California’s wage and hour laws relating to our current and former employees and seeks attorney’s fees and penalties. We believe these claims are baseless, are without merit and intend to vigorously defend against them. We do not currently have enough information to make a reasonable estimate as to the likelihood or amount of loss, or a range of reasonably possible losses as a result of this claim, so there has been no related accrual for estimated liability recorded as of April 3, 2021.
Structural Systems has been directed by California environmental agencies to investigate and take corrective action for groundwater contamination at itsour facilities located in El Mirage and Monrovia, California. Based on currently available information, Ducommun haswe have established an accrual for its estimated liability for such investigation and corrective action of $1.5 million at both September 30, 2017April 3, 2021 and December 31, 2016,2020, which is reflected in other long-term liabilities on itsour condensed consolidated balance sheets.
Structural Systems also faces liability as a potentially responsible party for hazardous waste disposed at landfills located in Casmalia and West Covina, California. Structural Systems and other companies and government entities have entered into consent decrees with respect to these landfills with the United States Environmental Protection Agency and/or California
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environmental agencies under which certain investigation, remediation and maintenance activities are being performed. Based on currently available information, Ducommunwe preliminarily estimatesestimate that the range of itsour future liabilities in connection with the landfill located in West Covina, California is between $0.4 million and $3.1 million. Ducommun hasWe have established an accrual for itsthe estimated liability in connection with the West Covina landfill of $0.4 million at September 30, 2017,April 3, 2021, which is reflected in other long-term liabilities on itsour condensed consolidated balance sheet. Ducommun’ssheets. Our ultimate liability in connection with these matters will depend upon a number of factors, including changes in existing laws and regulations, the design and cost of construction, operation and maintenance activities, and the allocation of liability among potentially responsible parties.
In June 2020, a fire severely damaged our performance center in Guaymas, Mexico, which is part of our Structural Systems segment. There were no injuries, however, property and equipment, inventories, and tooling in this leased facility were damaged. Our Guaymas performance center is comprised of 2 buildings with an aggregate total of 62,000 square feet. The loss of production from the Guaymas performance center is being absorbed by our other existing performance centers. A neighboring, non-related manufacturing facility, also suffered fire damage during the same time as the fire that severely damaged our Guaymas performance center. The cause of the fire is still undetermined and as such, there is no amount of loss that is probable and reasonably estimable at this time.
Our insurance covers damage to the facility, equipment, unfinished inventory, and other assets at replacement cost, finished goods inventory at selling price, as well as business interruption, third party property damage, and recovery related expenses caused by the fire, less our per claim deductible. The anticipated insurance recoveries related to losses and incremental costs incurred are recognized when receipt is probable. The anticipated insurance recoveries in excess of net book value of the damaged operating assets and business interruption will not be recorded until all contingencies related to our claim have been resolved. During the year ended December 31, 2020, $0.8 million of revenue and $0.5 million of related cost of sales were reversed for revenue previously recognized using the over time method as the revenue recognition process for these items were deemed to be interrupted as a result of these inventory items being damaged. Also during the year ended December 31, 2020, we wrote off property and equipment and tooling with an aggregate total net book value of $7.1 million and inventory on hand of $3.4 million that were damaged by the fire. The related anticipated insurance recoveries were also presented within the same financial statement line item in the condensed consolidated statements of income resulting in no net impact, with the anticipated insurance recoveries receivable included as part of other current assets on the condensed consolidated balance sheets. As of April 3, 2021, $13.5 million of general insurance recoveries have been received to date. The timing of and the remaining amounts of insurance recoveries, including for business interruption, are not known at this time.
In the normal course of business, Ducommun and its subsidiaries are defendants in certain other litigation, claims and inquiries, including matters relating to environmental laws. In addition, Ducommun makes various commitments and incurs contingent liabilities.liabilities in the ordinary course of business. While it is not feasible to predict the outcome of these matters, Ducommun does not presently expect that any sum it may be required to pay in connection with these matters would have a material adverse effect on its condensed consolidated financial position, results of operations or cash flows.
 
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Note 15.9. Business Segment Information
We supply products and services primarily to the aerospace and defense industries. Our subsidiaries are organized into two2 strategic businesses, StructuralElectronic Systems and ElectronicStructural Systems, each of which is a reportable operating segment.



Financial information by reportable operating segment was as follows:
(Dollars in thousands)
Three Months Ended
 April 3,
2021
March 28,
2020
Net Revenues
Electronic Systems$99,104 $98,120 
Structural Systems58,047 75,355 
Total Net Revenues$157,151 $173,475 
Segment Operating Income
Electronic Systems$12,491 $15,122 
Structural Systems5,128 5,390 
17,619 20,512 
Corporate General and Administrative Expenses (1)
(7,009)(6,886)
Operating Income$10,610 $13,626 
Depreciation and Amortization Expenses
Electronic Systems$3,423 $3,575 
Structural Systems3,440 3,689 
Corporate Administration59 72 
Total Depreciation and Amortization Expenses$6,922 $7,336 
Capital Expenditures
Electronic Systems$624 $815 
Structural Systems1,989 2,137 
Corporate Administration
Total Capital Expenditures$2,613 $2,952 
  
(In thousands)
Three Months Ended
 
(In thousands)
Nine Months Ended
  September 30,
2017
 October 1,
2016
 September 30,
2017
 October 1,
2016
Net Revenues        
Structural Systems $59,685
 $60,931
 $176,372
 $185,642
Electronic Systems 79,005
 71,640
 239,553
 222,514
Total Net Revenues $138,690
 $132,571
 $415,925
 $408,156
Segment Operating Income        
Structural Systems $3,466
 $5,893
 $8,147
 $13,347
Electronic Systems 8,234
 6,600
 24,158
 19,769
  11,700
 12,493
 32,305
 33,116
Corporate General and Administrative Expenses (1)
 (4,505) (4,441) (14,539) (13,505)
Operating Income $7,195
 $8,052
 $17,766
 $19,611
Depreciation and Amortization Expenses        
Structural Systems $2,220
 $2,851
 $6,879
 $6,683
Electronic Systems 3,345
 3,232
 10,207
 10,661
Corporate Administration 54
 6
 63
 76
Total Depreciation and Amortization Expenses $5,619
 $6,089
 $17,149
 $17,420
Capital Expenditures        
Structural Systems $4,449
 $3,555
 $17,217
 $10,149
Electronic Systems 1,793
 947
 4,256
��1,701
Corporate Administration 127
 
 775
 
Total Capital Expenditures $6,369
 $4,502
 $22,248
 $11,850
(1)Includes costs not allocated to either the Electronic Systems or Structural Systems operating segments.
(1)Includes costs not allocated to either the Structural Systems or Electronic Systems operating segments.
Segment assets include assets directly identifiable to or allocated to each segment. Our segment assets are as follows:
(Dollars in thousands)
 April 3,
2021
December 31,
2020
Total Assets
Electronic Systems$469,323 $448,606 
Structural Systems333,084 325,604 
Corporate Administration (1)
23,457 63,137 
Total Assets$825,864 $837,347 
Goodwill and Intangibles
Electronic Systems$198,755 $201,077 
Structural Systems93,581 94,497 
Total Goodwill and Intangibles$292,336 $295,574 
(1)Includes assets not specifically identified to or allocated to either the Electronic Systems or Structural Systems operating segments, including cash and cash equivalents.
18
  (In thousands)
  September 30,
2017
 December 31,
2016
Total Assets    
Structural Systems $207,413
 $175,580
Electronic Systems 376,569
 325,780
Corporate Administration (1)
 9,867
 14,069
Total Assets $593,849
 $515,429
Goodwill and Intangibles    
Structural Systems $3,063
 $3,745
Electronic Systems 231,657
 180,382
Total Goodwill and Intangibles $234,720
 $184,127
(1)Includes assets not specifically identified to or allocated to either the Structural Systems or Electronic Systems operating segments, including cash and cash equivalents.


Table of Contents
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations
Overview
Ducommun Incorporated (“Ducommun,” “the Company,” “we,” “us” or “our”) is a leading global provider of engineering and manufacturing services for high-performance products and high-cost-of failure applications used primarily in the aerospace and defense (“A&D”), industrial, medical and other industries (collectively, “Industrial”). We differentiate ourselves as a full-service solution-based provider, offering a wide range of value-added products and services in our primary businesses of electronics, structures and integrated solutions. We operate through two primary business segments: Electronic Systems and Structural Systems, each of which is a reportable segment.
ThirdCOVID-19 Pandemic Impact on Our Business
The COVID-19 pandemic has had a significant impact on our overall business during the three months ended April 3, 2021. As a result of the COVID-19 pandemic, precautionary measures were instituted by governments and businesses to mitigate its spread, including the imposition of travel restrictions, quarantines, shelter in place directives, and shutting down of non-essential businesses.
The safety of our workforce is our top priority. We have implemented numerous well-being protocols related to health and welfare at all of our facilities. Safety protocols consistent with guidelines provided by state and local governments and the Centers for Disease Control and Prevention (“CDC”) have been put into practice, including social distancing, provision of personal protective equipment, enhanced cleaning, and flexible work arrangements wherever possible. We have also offered enhanced leave and benefits to our employees and provide frequent updates to ensure our workforce is kept apprised of evolving regulations and safety measures.
In March 2020, the U.S. enacted the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) which provides tax relief to individuals and businesses affected by the coronavirus pandemic. We have not requested or accepted any loans or payments that are available under the CARES Act, however, we have utilized the option to defer payment of the employer portion of payroll taxes (Social Security) that would otherwise be required to be made during the period beginning March 27, 2020 to December 31, 2020. One half of the deferred amount is required to be paid by December 31, 2021, with the remaining 50% to be paid by December 31, 2022. As of April 3, 2021, we have deferred $6.1 million, which is included as part of accrued liabilities and other long-term liabilities on the condensed consolidated balance sheets.
The COVID-19 pandemic has and continues to contribute to a general slowdown in the global economy and specifically, the commercial aerospace end-use market. In 2020, both major large aircraft manufacturers, The Boeing Company and Airbus SE, announced lower build rates for the near and medium future. In its 2020 Annual Report on Form 10-K, Boeing indicated it expects it will take approximately three years for worldwide travel to return to 2019 levels and a few years beyond that for the industry to return to a long-term trend growth of five percent. While the full extent and impact of the COVID-19 pandemic cannot be reasonably estimated with certainty at this time, COVID-19 has had a significant impact on our business, the businesses of our customers and suppliers, as well as our results of operations and financial condition, and may have a material adverse impact on our business, results of operations and financial condition for the reminder of 2021 and beyond.
First quarter 2017 highlights:2021 recap:
Revenues of $138.7$157.2 million
Net income of $4.7$6.7 million, or $0.41$0.55 per diluted share
Adjusted EBITDA of $14.5$21.1 million,
Backlog or 13.5% of $655.3 million
Completed the acquisition of Lightning Diversion Systems, LLCrevenues
Non-GAAP Financial Measures
Adjusted earnings before interest, taxes, depreciation, amortization, stock-based compensation expense, and restructuring chargesGuaymas fire related expenses (“Adjusted EBITDA”) was $14.5$21.1 million and $14.9$23.2 million for the three months ended September 30, 2017April 3, 2021 and October 1, 2016,March 28, 2020, respectively.
When viewed with our financial results prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and accompanying reconciliations, we believe Adjusted EBITDA provides additional useful information to clarify and enhance the understanding of the factors and trends affecting our past performance and future prospects. We define these measures,this measure, explain how they areit is calculated and provide reconciliationsa reconciliation of these measuresthis measure to the most comparable GAAP measure in the table below. Adjusted EBITDA and the related financial ratios, as presented in this Quarterly Report on Form 10-Q (“Form 10-Q”), are supplemental measures of our performance that are not required by, or presented in accordance with, GAAP. They are not a measurement of our financial performance under GAAP and should not be considered as alternatives to net income or any other performance measures derived in accordance with GAAP, or as an alternative to net
19

Table of Contents
cash provided by operating activities as measures of our liquidity. The presentation of these measures should not be interpreted to mean that our future results will be unaffected by unusual or nonrecurring items.
We use Adjusted EBITDA as a non-GAAP operating performance measuresmeasure internally as a complementary financial measuresmeasure to evaluate the performance and trends of our businesses. We present Adjusted EBITDA and the related financial ratios, as applicable, because we believe that measures such as these provide useful information with respect to our ability to meet our operating commitments.
Adjusted EBITDA has limitations as an analytical tool, and you should not consider it in isolation or as substitutesa substitute for analysis of our results as reported under GAAP. Some of these limitations include:
They doIt does not reflect our cash expenditures, future requirements for capital expenditures or contractual commitments;
They doIt does not reflect changes in, or cash requirements for, our working capital needs;
They doIt does not reflect the significant interest expense or the cash requirements necessary to service interest or principal payments on our debt;
Although depreciation and amortization are non-cash charges, the assets being depreciated and amortized will often have to be replaced in the future, and Adjusted EBITDA does not reflect any cash requirements for such replacements;
They areIt is not adjusted for all non-cash income or expense items that are reflected in our statements of cash flows;
They doIt does not reflect the impact on earnings of charges resulting from matters unrelated to our ongoing operations; and

Other companies in our industry may calculate Adjusted EBITDA differently from us, limiting theirits usefulness as a comparative measures.measure.
Because of these limitations, Adjusted EBITDA and the related financial ratios should not be considered as measures of discretionary cash available to us to invest in the growth of our business or as a measure of cash that will be available to us to meet our obligations. You should compensate for these limitations by relying primarily on our GAAP results and using Adjusted EBITDA only as supplemental information. See our Condensed Consolidated Financial Statements contained in this Form 10-Q.
However, in spite of the above limitations, we believe that Adjusted EBITDA is useful to an investor in evaluating our results of operations because these measures:this measure:
AreIs widely used by investors to measure a company’s operating performance without regard to items excluded from the calculation of such terms, which can vary substantially from company to company depending upon accounting methods and book value of assets, capital structure and the method by which assets were acquired, among other factors;
HelpHelps investors to evaluate and compare the results of our operations from period to period by removing the effect of our capital structure from our operating performance; and
AreIs used by our management team for various other purposes in presentations to our Board of Directors as a basis for strategic planning and forecasting.
The following financial items have been added back to or subtracted from our net income when calculating Adjusted EBITDA:
Interest expense may be useful to investors for determining current cash flow;
Income tax expense may be useful to investors because it represents the taxes which may be payable for the period and the change in deferred taxes during the period, and may reduce cash flow available for use in our business;
Depreciation may be useful to investors because it generally represents the wear and tear on our property and equipment used in our operations;
Amortization expense may be useful to investors because it represents the estimated attrition of our acquired customer base and the diminishing value of product rights;
Stock-based compensation may be useful to our investors for determining current cash flow; and
Gain on divestitures may be useful to our investors in evaluating our on-going operating performance; and
Restructuring chargesGuaymas fire related expenses may be useful to our investors in evaluating our core operating performance.
20

Table of Contents
Reconciliations of net income to Adjusted EBITDA and the presentation of Adjusted EBITDA as a percentage of net revenues were as follows:
(In thousands)
Three Months Ended
 
(In thousands)
Nine Months Ended
(Dollars in thousands)
Three Months Ended
September 30,
2017
 October 1,
2016
 September 30,
2017
 October 1,
2016
April 3,
2021
March 28,
2020
Net income$4,655
 $5,014
 $10,593
 $22,425
Net income$6,695 $7,930 
Interest expense2,088
 1,945
 5,588
 6,279
Interest expense2,806 4,246 
Income tax expense940
 1,234
 2,073
 9,863
Income tax expense1,109 1,450 
Depreciation3,243
 3,249
 9,910
 10,002
Depreciation3,423 3,436 
Amortization2,376
 2,840
 7,239
 7,418
Amortization3,499 3,900 
Stock-based compensation expense1,100
 594
 4,264
 2,579
Stock-based compensation expense3,133 2,279 
Gain on divestitures
 
 
 (18,815)
Restructuring charges64
 
 64
 
Guaymas fire related expensesGuaymas fire related expenses475 — 
Adjusted EBITDA$14,466
 $14,876
 $39,731
 $39,751
Adjusted EBITDA$21,140 $23,241 
% of net revenues10.4% 11.2% 9.6% 9.7%% of net revenues13.5 %13.4 %



21

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Results of Operations
ThirdFirst Quarter of 20172021 Compared to ThirdFirst Quarter of 20162020
The following table sets forth net revenues, selected financial data, the effective tax rate and diluted earnings per share:


 
(in thousands, except per share data)
Three Months Ended
 
(in thousands, except per share data)
Nine Months Ended
(Dollars in thousands, except per share data)
Three Months Ended
 September 30,
2017
 
%
of Net  Revenues
 October 1,
2016
 
%
of Net  Revenues
 September 30,
2017
 
%
of Net  Revenues
 October 1,
2016
 
%
of Net  Revenues
April 3,
2021
%
of Net  Revenues
March 28,
2020
%
of Net  Revenues
Net Revenues $138,690
 100.0 % $132,571
 100.0 % $415,925
 100.0 % $408,156
 100.0 %Net Revenues$157,151 100.0 %$173,475 100.0 %
Cost of Sales 112,681
 81.2 % 107,348
 81.0 % 338,798
 81.5 % 329,749
 80.8 %Cost of Sales124,051 78.9 %136,671 78.8 %
Gross Profit 26,009
 18.8 % 25,223
 19.0 % 77,127
 18.5 % 78,407
 19.2 %Gross Profit33,100 21.1 %36,804 21.2 %
Selling, General and Administrative Expenses 18,814
 13.6 % 17,171
 12.9 % 59,361
 14.3 % 58,796
 14.4 %Selling, General and Administrative Expenses22,490 14.3 %23,178 13.4 %
Operating Income 7,195
 5.2 % 8,052
 6.1 % 17,766
 4.2 % 19,611
 4.8 %Operating Income10,610 6.8 %13,626 7.8 %
Interest Expense (2,088) (1.5)% (1,945) (1.5)% (5,588) (1.3)% (6,279) (1.5)%Interest Expense(2,806)(1.8)%(4,246)(2.4)%
Other Income 488
 0.4 % 141
 0.1 % 488
 0.1 % 141
  %
Gain on Divestitures 
  % 
  % 
  % 18,815
 4.6 %
Income Before Taxes 5,595
 4.1 % 6,248
 4.7 % 12,666
 3.0 % 32,288
 7.9 %Income Before Taxes7,804 5.0 %9,380 5.4 %
Income Tax Expense 940
 nm
 1,234
 nm
 2,073
 nm
 9,863
 nm
Income Tax Expense1,109 nm1,450 nm
Net Income $4,655
 3.4 % $5,014
 3.8 % $10,593
 2.5 % $22,425
 5.5 %Net Income$6,695 4.3 %$7,930 4.6 %
                
Effective Tax Rate 16.8% nm
 19.8% nm
 16.4% nm
 30.5% nm
Effective Tax Rate14.2 %nm15.5 %nm
Diluted Earnings Per Share $0.41
 nm
 $0.44
 nm
 $0.92
 nm
 $1.99
 nm
Diluted Earnings Per Share$0.55 nm$0.67 nm
nm = not meaningful

22

Table of Contents
Net Revenues by End-Use Market and Operating Segment
Net revenues by end-use market and operating segment during the first fiscal three months ended April 3, 2021 and nine months of 2017 and 2016,March 28, 2020, respectively, were as follows:
 Three Months Ended Nine Months EndedThree Months Ended
   (In thousands) % of Net Revenues   (In thousands) % of Net Revenues(Dollars in thousands)% of Net Revenues
 Change September 30
2017
 October 1,
2016
 September 30
2017
 October 1,
2016
 Change September 30
2017
 October 1,
2016
 September 30
2017
 October 1,
2016
ChangeApril 3,
2021
March 28,
2020
April 3,
2021
March 28,
2020
Consolidated Ducommun                 Consolidated Ducommun
Military and space                 Military and space$12,228 $114,127 $101,899 72.6 %58.7 %
Defense electronics $7,740
 $50,259
 $42,519
 36.3% 32.1% $27,514
 $153,728
 $126,214
 37.0% 30.9%
Defense structures 318
 12,534
 12,216
 9.0% 9.2% 4,434
 42,041
 37,607
 10.1% 9.2%
Commercial aerospaceCommercial aerospace(25,205)35,377 60,582 22.5 %34.9 %
IndustrialIndustrial(3,347)7,647 10,994 4.9 %6.4 %
TotalTotal$(16,324)$157,151 $173,475 100.0 %100.0 %
Electronic SystemsElectronic Systems
Military and spaceMilitary and space$7,416 $81,733 $74,317 82.5 %75.7 %
Commercial aerospace (2,842) 60,923
 63,765
 43.9% 48.1% (16,820) 176,643
 193,463
 42.5% 47.4%Commercial aerospace(3,085)9,724 12,809 9.8 %13.1 %
Industrial 903
 14,974
 14,071
 10.8% 10.6% (7,359) 43,513
 50,872
 10.4% 12.5%Industrial(3,347)7,647 10,994 7.7 %11.2 %
Total $6,119
 $138,690
 $132,571
 100.0% 100.0% $7,769
 $415,925
 $408,156
 100.0% 100.0%Total$984 $99,104 $98,120 100.0 %100.0 %
                 
Structural Systems                 Structural Systems
Military and space (defense structures) $318
 $12,534
 $12,216
 21.0% 20.0% $4,434
 $42,041
 $37,607
 23.8% 20.3%
Military and spaceMilitary and space$4,812 $32,394 $27,582 55.8 %36.6 %
Commercial aerospace (1,564) 47,151
 48,715
 79.0% 80.0% (13,704) 134,331
 148,035
 76.2% 79.7%Commercial aerospace(22,120)25,653 47,773 44.2 %63.4 %
Total $(1,246) $59,685
 $60,931
 100.0% 100.0% $(9,270) $176,372
 $185,642
 100.0% 100.0%Total$(17,308)$58,047 $75,355 100.0 %100.0 %
                 
Electronic Systems                 
Military and space (defense electronics) $7,740
 $50,259
 $42,519
 63.6% 59.4% $27,514
 $153,728
 $126,214
 64.1% 56.7%
Commercial aerospace (1,278) 13,772
 15,050
 17.4% 21.0% (3,116) 42,312
 45,428
 17.7% 20.4%
Industrial 903
 14,974
 14,071
 19.0% 19.6% (7,359) 43,513
 50,872
 18.2% 22.9%
Total $7,365
 $79,005
 $71,640
 100.0% 100.0% $17,039
 $239,553
 $222,514
 100.0% 100.0%
Net revenues for the three months ended September 30, 2017April 3, 2021 were $138.7$157.2 million, compared to $132.6$173.5 million for the three months ended October 1, 2016.March 28, 2020. The year-over-year increasedecrease was primarily due to the following:
$8.125.2 million lower revenues in our commercial aerospace end-use markets due to lower build rates on large aircraft platforms and regional and business aircraft platforms; partially offset by
$12.2 million higher revenues in our military and space end-use markets mainly due to increased demand, which favorably impacted ourhigher build rates on military fixed-wing missile,aircraft platforms and helicopter platforms; and
$0.9 million higher revenues in our industrial end-use markets; partially offset by
$2.8 million lower revenues in our commercial aerospace end-use markets mainly due to the winding down of a regional jet program and continued softness in demand within the business jet market.
Net revenues for the nine months ended September 30, 2017 were $415.9 million, compared to $408.2 million for the nine months ended October 1, 2016. The year-over-year increase was primarily due to the following:
$31.9 million higher revenues in ourother military and space end-use markets mainly due to increased demand, which favorably impacted our helicopter and fixed-wing platforms, partially offset by the divestiture of our Miltec operation in March 2016. The net increase was partially offset by
$16.8 million lower revenues in our commercial aerospace end-use markets mainly due to the winding down of a regional jet program and continued softness in demand within the business jet market; and
$7.4 million lower revenues in our industrial end-use markets mainly due to exiting certain Industrial customers and the divestiture of our Pittsburgh operation in January 2016.

platforms.
Net Revenues by Major Customers
A significant portion of our net revenues are from our top ten customers as follows:
Three Months Ended
April 3,
2021
March 28,
2020
Boeing Company7.4 %8.4 %
Lockheed Martin Corporation5.3 %4.1 %
Northrop Grumman Corporation6.1 %5.6 %
Raytheon Technologies Corporation22.7 %18.4 %
Spirit AeroSystems Holdings, Inc.2.7 %5.6 %
Total top ten customers (1)
58.5 %56.7 %
(1)Includes The Boeing Company (“Boeing”), Lockheed Martin Corporation (“Lockheed”), Northrop Grumman Corporation (“Northrop”), Raytheon Technologies Corporation (“Raytheon”), and Spirit AeroSystems Holdings, Inc. (“Spirit”).
23

  Three Months Ended Nine Months Ended
  September 30,
2017
 October 1,
2016
 September 30,
2017
 October 1,
2016
Boeing Company 17.1% 18.1% 16.6% 17.8%
Lockheed Martin Corporation 5.7% 6.6% 5.7% 5.7%
Raytheon Company 14.3% 8.6% 14.1% 7.3%
Spirit Aerosystems Holdings, Inc. 8.0% 8.3% 7.6% 8.2%
United Technologies Corporation 4.5% 5.3% 5.0% 4.9%
Total top ten customers (1)
 64.3% 61.0% 62.8% 57.3%
Table of Contents
(1)Includes the Boeing Company (“Boeing”), Lockheed Martin Corporation (“Lockheed Martin”), Raytheon Company (“Raytheon”), Spirit Aerosystems Holdings, Inc. (“Spirit”), and United Technologies Corporation (“United Technologies”).
Boeing, Lockheed, Martin,Northrop, Raytheon, Spirit, and United TechnologiesSpirit represented the following percentages of total accounts receivable:
 September 30,
2017
 December 31,
2016
April 3,
2021
December 31,
2020
Boeing 15.4% 7.8%Boeing6.1 %4.8 %
Lockheed Martin 4.8% 2.9%
LockheedLockheed1.7 %2.4 %
NorthropNorthrop9.7 %12.3 %
Raytheon 6.2% 10.9%Raytheon12.6 %15.0 %
Spirit 10.9% 9.0%Spirit0.9 %1.1 %
United Technologies 3.0% 7.8%
The net revenues and accounts receivable from Boeing, Lockheed, Martin,Northrop, Raytheon, Spirit, and United TechnologiesSpirit are diversified over a number of commercial, military and space programs and were generated by both operating segments.
Gross Profit
Gross profit consists of net revenues less cost of sales. Cost of sales includes the cost of production of finished products and other expenses related to inventory management, manufacturing quality, and order fulfillment. Gross profit margin as a percentage of net revenues decreasedwas essentially flat year-over-year inwith the three months ended September 30, 2017 to 18.8%April 3, 2021 of 21.1%, compared to the three months ended October 1, 2016March 28, 2020 of 19.0%21.2% primarily due to unfavorable product mix,manufacturing volume, partially offset by lower manufacturing costs as a result of ongoing cost reduction initiatives.
Gross profit margin as a percentage of net revenues decreased year-over-year in the nine months ended September 30, 2017 to 18.5% compared to the nine months ended October 1, 2016 of 19.2% primarily due to unfavorablefavorable product mix partially offset byand lower manufacturing costs as a result of ongoing cost reduction initiativescompensation and higher manufacturing volume.benefit costs.
Selling, General and Administrative (“SG&A”) Expenses
SG&A expenses increased $1.6decreased $0.7 million year-over-year in the three months ended September 30, 2017April 3, 2021 compared to the three months ended October 1, 2016March 28, 2020 primarily due to higherlower professional services fees of $0.4 million and lower compensation and benefit costs of $1.5 million.
SG&A expenses increased $0.6 million year-over-year in the nine months ended September 30, 2017 compared to the nine months ended October 1, 2016 primarily due to higher compensation and benefit costs of $2.0 million, partially offset by a decrease due to the divestitures of our Pittsburgh and Miltec operations and closure of certain facilities of $1.3$0.3 million.
Interest Expense
Interest expense increased year-over-yeardecreased in the three months ended September 30, 2017April 3, 2021 compared to the three months ended October 1, 2016 primarilyMarch 28, 2020 due to a higher utilization of the Revolving Credit Facility balance in the current three month period, including the acquisition of Lightning Diversion Systems, LLC (“LDS”), partially offset by a lower Term Loan balance as a result of voluntary principal prepayments on our credit facilities.
Interest expense decreased year-over-year in the nine months ended September 30, 2017 compared to the nine months ended October 1, 2016 primarily due tointerest rates and a lower outstanding Term Loan balance as a result of voluntary principal prepayments on our credit facilities, partially offset by higher utilization of the Revolving Credit Facility in the current nine month period, including the acquisition of LDS.

Gain on Divestitures
There was no gain on divestitures during the three and nine months ended September 30, 2017. The gain on divestitures for the three and nine months ended October 1, 2016 consisted of the divestitures during the first quarter of 2016 of our Pittsburgh operation with a pretax gain of $18.3 million and our Miltec operation with a preliminary pretax gain of $0.5 million. (see Note 1 to our condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q).debt balance.
Income Tax Expense
We recorded income tax expense of $0.9$1.1 million (effective tax rate of 16.8%) for the three months ended September 30, 2017April 3, 2021, compared to $1.2$1.5 million (effective tax rate of 19.8%) for the three months ended October 1, 2016.March 28, 2020. The decrease in income tax expense for the effectivefirst quarter of 2021 compared to the first quarter of 2020 was primarily due to lower pre-tax income for the first quarter of 2021 compared to the first quarter of 2020 and higher discrete tax ratebenefits recognized in the first quarter of 2021 for net tax windfalls related to stock-based compensation.
We evaluated the amendments in ASU 2019-12 for the three months ended September 30, 2017 compared toApril 3, 2021 and determined they do not have an impact on our income taxes.
We considered the three months ended October 1, 2016 was primarily due to tax benefits recognized from additional U.S. Federal research and development tax credits. FASB ASU 2016-09 “Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” became effective beginning January 1, 2017 and required allprovisions of the tax effects related to share-based payments to be recorded through theRescue Plan and determined they do not have a material impact on our income statement. This could result in fluctuations in our effective tax rate from period to period, depending on the number of awards exercised and/or vested in the quarter as well as the volatility of our stock price. During the current year three month period, we recognized tax benefits from deductions of share-based payments in excess of compensation cost recognized for financial reporting purposes of $0.1 million, which decreased the effective tax rate by 0.6%.
We recorded income tax expense of $2.1 million (effective tax rate of 16.4%) for the nine months ended September 30, 2017 compared to $9.9 million (effective tax rate of 30.5%) for the nine months ended October 1, 2016. The decrease in the effective tax rate for the nine months ended September 30, 2017 compared to the nine months ended October 1, 2016 was primarily due to the preliminary gain on divestitures of our Pittsburgh and Miltec operations of $18.8 million, which resulted in a higher state tax liability, compared to the current nine month period. In addition, during the current nine month period, we recognized tax benefits from deductions of share-based payments in excess of compensation cost recognized for financial reporting purposes of $0.6 million, which decreased the effective tax rate by 4.8%, and we recognized additional tax benefits from U.S. Federal research and development tax credits.taxes.
Our total amount of unrecognized tax benefits was $3.7 million and $3.0$4.1 million as of September 30, 2017both April 3, 2021 and December 31, 2016, respectively.2020. If recognized, $2.4 million would affect the effective tax rate. We record interest and penalty charges, if any, related to uncertain tax positions as a component of tax expense and unrecognized tax benefits. The amounts accrued for interest and penalty charges as of April 3, 2021 and December 31, 2020 were not significant. We do not reasonably expect significant increases or decreases to ourthe total amount of unrecognized tax benefits to increase or decrease by a material amount in the next twelve months.
In 2016,We file U.S. Federal and state income tax returns. We are subject to examination by the Internal Revenue Service (“IRS”) commenced an audit of our 2014for tax years after 2016 and 2015by state taxing authorities for tax years. Althoughyears after 2015. While we are no longer subject to examination prior to those periods, carryforwards generated prior to those periods may still be adjusted upon examination by the outcome of tax examinations cannotIRS or state taxing authority if they either have been or will be predicted with certainty, weused in a subsequent period. We believe we have adequately accrued for tax deficiencies or reductions in tax benefits, if any, that could result from the examination and all open audit years.
Net Income and Earnings per Share
Net income and earnings per share for the three months ended September 30, 2017April 3, 2021 were $4.7$6.7 million, or $0.41$0.55 per diluted share, compared to $5.0$7.9 million, or $0.44$0.67 per diluted share, for the three months ended October 1, 2016.March 28, 2020. The decrease in net income for the three months ended September 30, 2017April 3, 2021 compared to the three months ended October 1, 2016March 28, 2020 was primarily due to the following:
$1.6 million higher SG&A expense; partially offset by
$0.3$3.7 million of lower income tax expense.
Net income and earnings per share for the nine months ended September 30, 2017 were $10.6 million, or $0.92 per diluted share, compared to $22.4 million, or $1.99 per diluted share, for the nine months ended October 1, 2016. The decrease in net income for the nine months ended September 30, 2017 compared to the nine months ended October 1, 2016 was primarily due to the following:
The prior year includedgross profit as a preliminary pre-tax gain on divestituresresult of our Pittsburgh and Miltec operations of $18.8 million;lower revenues, partially offset by lower interest expense of $1.4 million.
$7.8 million lower income tax expense.
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Business Segment Performance
We report our financial performance based upon the two reportable operating segments: StructuralElectronic Systems and ElectronicStructural Systems. The results of operations differ between our reportable operating segments due to differences in competitors, customers, extent of proprietary deliverables and performance. The following table summarizes our business segment performance for the three and nine months ended September 30, 2017April 3, 2021 and October 1, 2016:March 28, 2020:

Three Months Ended
%(Dollars in thousands)% of Net Revenues
ChangeApril 3,
2021
March 28,
2020
April 3,
2021
March 28,
2020
Net Revenues
Electronic Systems1.0 %$99,104 $98,120 63.1 %56.6 %
Structural Systems(23.0)%58,047 75,355 36.9 %43.4 %
Total Net Revenues(9.4)%$157,151 $173,475 100.0 %100.0 %
Segment Operating Income
Electronic Systems$12,491 $15,122 12.6 %15.4 %
Structural Systems5,128 5,390 8.8 %7.2 %
17,619 20,512 
Corporate General and Administrative Expenses (1)
(7,009)(6,886)(4.5)%(4.0)%
Total Operating Income$10,610 $13,626 6.8 %7.8 %
Adjusted EBITDA
Electronic Systems
Operating Income$12,491 $15,122 
Depreciation and Amortization3,423 3,575 
15,914 18,697 16.1 %19.1 %
Structural Systems
Operating Income5,128 5,390 
Depreciation and Amortization3,440 3,689 
Guaymas fire related expenses475 — 
9,043 9,079 15.6 %12.0 %
Corporate General and Administrative Expenses (1)
Operating Loss(7,009)(6,886)
Depreciation and Amortization59 72 
Stock-Based Compensation Expense3,133 2,279 
(3,817)(4,535)
Adjusted EBITDA$21,140 $23,241 13.5 %13.4 %
Capital Expenditures
Electronic Systems$624 $815 
Structural Systems1,989 2,137 
Corporate Administration— — 
Total Capital Expenditures$2,613 $2,952 
  Three Months Ended Nine Months Ended
  % (In thousands) % of Net Revenues % (In thousands) % of Net Revenues
  Change September 30,
2017
 October 1,
2016
 September 30,
2017
 October 1,
2016
 Change September 30,
2017
 October 1,
2016
 September 30,
2017
 October 1,
2016
Net Revenues                    
Structural Systems (2.0)% $59,685
 $60,931
 43.0 % 46.0 % (5.0)% $176,372
 $185,642
 42.4 % 45.5 %
Electronic Systems 10.3 % 79,005
 71,640
 57.0 % 54.0 % 7.7 % 239,553
 222,514
 57.6 % 54.5 %
Total Net Revenues 4.6 % $138,690
 $132,571
 100.0 % 100.0 % 1.9 % $415,925
 $408,156
 100.0 % 100.0 %
Segment Operating Income                    
Structural Systems   $3,466
 $5,893
 5.8 % 9.7 %   $8,147
 $13,347
 4.6 % 7.2 %
Electronic Systems   8,234
 6,600
 10.4 % 9.2 %   24,158
 19,769
 10.1 % 8.9 %
    11,700
 12,493
       32,305
 33,116
    
Corporate General and Administrative Expenses (1)
   (4,505) (4,441) (3.2)% (3.3)%   (14,539) (13,505) (3.5)% (3.3)%
Total Operating Income   $7,195
 $8,052
 5.2 % 6.1 %   $17,766
 $19,611
 4.3 % 4.8 %
Adjusted EBITDA                    
Structural Systems                    
Operating Income   $3,466
 $5,893
       $8,147
 $13,347
    
Other Income   200
 141
       200
 141
    
Depreciation and Amortization   2,220
 2,851
       6,879
 6,683
    
Restructuring Charges   64
 
       64
 
    
    5,950
 8,885
 10.0 % 14.6 %   15,290
 20,171
 8.7 % 10.9 %
Electronic Systems                    
Operating Income   8,234
 6,600
       24,158
 19,769
    
Other Income   288
 
       288
 
    
Depreciation and Amortization   3,345
 3,232
       10,207
 10,661
    
    11,867
 9,832
 15.0 % 13.7 %   34,653
 30,430
 14.5 % 13.7 %
Corporate General and Administrative Expenses (1)
                    
Operating Loss   (4,505) (4,441)       (14,539) (13,505)    
Depreciation and Amortization   54
 6
       63
 76
    
Stock-Based Compensation Expense   1,100
 594
       4,264
 2,579
    
    (3,351) (3,841)       (10,212) (10,850)    
Adjusted EBITDA   $14,466
 $14,876
 10.4 % 11.2 %   $39,731
 $39,751
 9.6 % 9.7 %
Capital Expenditures                    
Structural Systems   $4,449
 $3,555
       $17,217
 $10,149
    
Electronic Systems   1,793
 947
       4,256
 1,701
    
Corporate Administration   127
 
       775
 
    
Total Capital Expenditures   $6,369
 $4,502
       $22,248
 $11,850
    
(1)Includes costs not allocated to either the Structural(1)Includes costs not allocated to either the Electronic Systems or Structural Systems operating segments.
Electronic Systems
Electronic Systems operating segments.
Structural Systems
Structural Systems’ net revenues in the three months ended September 30, 2017April 3, 2021 compared to the three months ended October 1, 2016 decreased $1.2March 28, 2020 increased $1.0 million primarily due to the following:
$1.6 million lower revenues in our commercial aerospace end-use markets mainly due to the winding down of a regional jet program and continued softness in demand within the business jet market; partially offset by
$0.37.4 million higher revenues in our military and space end-use markets mainly due to increased demand, which favorably impacted our helicopter platforms.higher build rates on other military and space platforms; partially offset by
Structural Systems’ net revenues in the nine months ended September 30, 2017 compared to the nine months ended October 1, 2016 decreased $9.3 million primarily due to the following:

$13.73.1 million lower revenues in our commercial aerospace end-use markets mainlydue to lower build rates on large aircraft platforms, regional and business aircraft platforms, and other commercial aerospace platforms.
Electronic Systems segment operating income in the three months ended April 3, 2021 compared to the three months ended March 28, 2020 decreased $2.6 million primarily due to unfavorable manufacturing volume and unfavorable product mix, partially offset by lower compensation and benefit costs.
Structural Systems
Structural Systems net revenues in the three months ended April 3, 2021 compared to the three months ended March 28, 2020 decreased $17.3 million due to the winding downfollowing:
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$22.1 million lower revenues in our commercial aerospace end-use markets due to lower build rates on large aircraft platforms and regional jet program and continued softness in demand within the business jet market;aircraft platforms; partially offset by
$4.44.8 million higher revenues in our military and space end-use markets mainly due to increased demand, which favorably impacted our helicopterhigher build rates on various missile platforms.
The Structural Systems segment operating income in the three and nine months ended September 30, 2017 compared to the three and nine months ended October 1, 2016 decreased $2.4 million and $5.2 million, respectively, primarily due to the impact of new program development on large airframe platforms and lower manufacturing volume.
Electronic Systems
Electronic Systems’ net revenues in the three months ended September 30, 2017April 3, 2021 compared to the three months ended October 1, 2016 increased $7.4March 28, 2020 decreased $0.3 million primarily due to the following:
$7.7 million higher revenues in our military and space end-use markets mainly due to increased demand, which favorably impacted our fixed-wing, missile, and helicopter platforms; and
$0.9 million higher revenues in our Industrial end-use markets;unfavorable manufacturing volume, partially offset by favorable product mix and lower compensation and benefit costs.
$1.3 million lower revenuesIn June 2020, a fire severely damaged our performance center in our commercial aerospace end-use markets mainly due to continued softness in demand in the business jet market.
Electronic Systems’ net revenues in the nine months ended September 30, 2017 compared to the nine months ended October 1, 2016 increased $17.0 million primarily due to the following:
$27.5 million higher revenues in our military and space end-use markets mainly due to increased demand,Guaymas, Mexico, which favorably impacted our fixed-wing, helicopter, and missile platforms, partially offset by the divestitureis part of our Miltec operationStructural Systems segment. There were no injuries, however, property and equipment, inventory, and tooling in March 2016.this leased facility were damaged. We have insurance coverage and expect the majority, if not all, of these items will be covered, less our deductible. The net increase was partially offsetfull financial impact cannot be estimated at this time as we are currently working with our insurance carriers to determine the cause of the fire. Our Guaymas performance center is comprised of two buildings with an aggregate total of 62,000 square feet. The loss of production from the Guaymas performance center is being absorbed by
$7.4 million lower revenues our other existing performance centers. See Note 8 to our condensed consolidated financial statements included in our Industrial end-use markets mainly due to exiting certain Industrial customers and the divestiturePart I, Item 1 of our Pittsburgh operation in January 2016; and
$3.1 million lower revenues in our commercial aerospace end-use markets mainly due to continued softness in demand in the business jet market.
Electronic Systems’ segment operating income in the three and nine months ended September 30, 2017 compared to the three and nine months ended October 1, 2016 increased $1.6 million and $4.4 million, respectively, primarily due to higher manufacturing volume and lower manufacturing costs as a result of ongoing cost reduction initiatives, partially offset by unfavorable product mix.this Form 10-Q.
Corporate General and Administrative (“CG&A”) Expenses
CG&A expenses increased $0.1 million inwere essentially flat for the three months ended September 30, 2017April 3, 2021 compared to the three months ended October 1, 2016.
CG&A expenses increased $1.0 million in the nine months ended September 30, 2017 compared to the nine months ended October 1, 2016 primarily due to higher compensation and benefit costs of $2.5 million, partially offset by lower professional services fees of $1.3 million.March 28, 2020.
Backlog
We define backlog as customer placed purchase orders (“POs”) and long-term agreements (“LTAs”) with firm fixed price and expected delivery dates of 24 months or less. The majority of the LTAs do not meet the definition of a contract under ASC 606 and thus, the backlog amount disclosed below is greater than the remaining performance obligations amount disclosed in Note 1 to our condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q. Backlog is subject to delivery delays or program cancellations, which are beyond our control. Backlog is affected by timing differences in the placement of customer orders and tends to be concentrated in several programs to a greater extent than our net revenues. Backlog in industrial markets tends to be of a shorter duration and is generally fulfilled within a 3-monththree month period. As a result of these factors, trends in our overall level of backlog may not be indicative of trends in our future net revenues. $427.0
The increase in backlog was primarily in the industrial end-use markets. $555.0 million of total backlog is expected to be delivered over the next 12 months. The following table summarizes our backlog as of September 30, 2017April 3, 2021 and December 31, 2016:2020:


(Dollars in thousands)
ChangeApril 3,
2021
December 31,
2020
Consolidated Ducommun
Military and space$1,028 $516,424 $515,396 
Commercial aerospace(1,926)266,400 268,326 
Industrial3,290 27,309 24,019 
Total$2,392 $810,133 $807,741 
Electronic Systems
Military and space$(4,251)$385,626 $389,877 
Commercial aerospace(2,620)54,099 56,719 
Industrial3,290 27,309 24,019 
Total$(3,581)$467,034 $470,615 
Structural Systems
Military and space$5,279 $130,798 $125,519 
Commercial aerospace694 212,301 211,607 
Total$5,973 $343,099 $337,126 

26
  (In thousands)
  Change September 30,
2017
 December 31,
2016
Consolidated Ducommun      
Military and space      
Defense electronics $(7,745) $189,831
 $197,576
Defense structures 7,727
 66,605
 58,878
Commercial aerospace 44,019
 367,408
 323,389
Industrial 4,355
 31,485
 27,130
Total $48,356
 $655,329
 $606,973
Structural Systems      
Military and space (defense structures) $7,727
 $66,605
 $58,878
Commercial aerospace 31,253
 316,492
 285,239
Total $38,980
 $383,097
 $344,117
Electronic Systems      
Military and space (defense electronics) $(7,745) $189,831
 $197,576
Commercial aerospace 12,766
 50,916
 38,150
Industrial 4,355
 31,485
 27,130
Total $9,376
 $272,232
 $262,856


Table of Contents
Liquidity and Capital Resources
Available Liquidity
Total debt, the weighted-average interest rate, cash and cash equivalents and available credit facilities were as follows:
(Dollars in millions)
April 3,December 31,
20212020
Total debt, including long-term portion$313.0 $320.6 
Weighted-average interest rate on debt3.16 %3.59 %
Term Loans interest rate3.23 %3.81 %
Cash and cash equivalents$17.0 $56.5 
Unused Revolving Credit Facility$79.8 $74.8 
  (In millions)
  September 30, December 31,
  2017 2016
Total debt, including long-term portion $224.7
 $170.0
Weighted-average interest rate on debt 3.43% 3.25%
Term Loan interest rate 3.44% 3.31%
Cash and cash equivalents $3.7
 $7.4
Unused Revolving Credit Facility $134.5
 $199.0
OurIn December 2019, we completed the refinancing of a portion of our existing debt by entering into a new revolving credit facility consists of(“2019 Revolving Credit Facility”) to replace the then existing revolving credit facility that was entered into in November 2018 (“2018 Revolving Credit Facility”) and entered into a $275.0 million senior securednew term loan which matures on June 26, 2020 (“2019 Term Loan”), and. The 2019 Revolving Credit Facility is a $200.0$100.0 million senior secured revolving credit facility (“that will mature on December 20, 2024, replacing the $100.0 million 2018 Revolving Credit Facility”), which maturesFacility that would have matured on June 26, 2020November 21, 2023. The 2019 Term Loan is a $140.0 million senior secured term loan that will mature on December 20, 2024. We also have an existing $240.0 million senior secured term loan that was entered into in November 2018 that will mature on November 21, 2025 (“2018 Term Loan”). The original amounts available under the 2019 Revolving Credit Facility, 2019 Term Loan, and 2018 Term Loan (collectively, the “Credit Facilities”). in aggregate, totaled $480.0 million. We are required to make installment payments of 1.25% of the original outstanding principal balance of the 2019 Term Loan amount on a quarterly basis, on the last day of the calendar quarter. We made the mandatory prepayments of amounts outstandingquarterly principal prepayment under the 2019 Term Loan.Loan during the three months ended April 3, 2021 of $1.8 million. In addition, if we meet the annual excess cash flow threshold, we are required to make an annual additional principal payment on the 2018 Term Loan based on the consolidated adjusted leverage ratio. During the first quarter of 2021, we made the required 2020 annual excess cash flow principal payment of $0.9 million. Further, the undrawn portion of the commitment of the 2019 Revolving Credit Facility is subject to a commitment fee ranging from 0.175% to 0.275%, based upon the consolidated total net adjusted leverage ratio. As of September 30, 2017,April 3, 2021, we were in compliance with all covenants required under the Credit Facilities. See Note 95 to our condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q for further information. On July 14, 2017,
We drew down $50.0 million on the 2019 Revolving Credit Facility during the first quarter of 2020 to hold as cash on hand, $25.0 million of which was repaid during the fourth quarter of 2020. We made net voluntary prepayments of $5.0 million on the 2019 Revolving Credit Facility during the first quarter of 2021.
In November 2018, we entered intocompleted credit facilities to replace the then existing credit facilities. The November 2018 credit facilities consisted of the 2018 Term Loan and the 2018 Revolving Credit Facility (collectively, the “2018 Credit Facilities”). We were required to make installment payments of 0.25% of the outstanding principal balance of the 2018 Term Loan amount on a technical amendment toquarterly basis, however, in conjunction with the Credit Facilities (“First Amendment”) which provides more flexibility to close certain qualified acquisitions permitted under2019 refinancing where we paid down $56.0 million on the Credit Facilities.2018 Term Loan, it paid all the required quarterly installment payments on the 2018 Term Loan until maturity.
In October 2015, we entered into interest rate cap hedges that were designated as cash flow hedges, with maturity dateswhich matured during our second quarter of June 2020, and in aggregate, totaling $135.0 million of our debt. We paid a total of $1.0 million in connection with entering into the interest rate cap hedges.
On September 11, 2017, we acquired LDS for a purchase price of $60.0 million, net of cash acquired, all payable in cash. Upon the closing of the transaction, we paid $61.4 million in cash by drawing down on the Revolving Credit Facility. The remaining $0.6 million was paid in October 2017 in cash, also by drawing down on the Revolving Credit Facility. See Note 2 for further information.2020.
We expect to spend a total of $26.0$16.0 million to $30.0$18.0 million for capital expenditures in 20172021 (excluding capital expenditures we will spend to restore the manufacturing capabilities related to our Guaymas performance center that was severely damaged by fire in June 2020), financed by cash generated from operations, principally to support the expansion of our Parsons, Kansas facility and new contract awards atin Electronic Systems and Structural Systems

and Electronic Systems. As part of our strategic plan to become a Tier 2 supplier of a wider range of higher-level assemblies and win new contract awards, additional up-front investment in tooling will be required for newer programs which have higher engineering content and higher levels of complexity in assemblies. However, some portion of the expected capital expenditures in 2021 could be delayed as a result of the COVID-19 pandemic.
We believe the ongoing aerospace and defense subcontractor consolidation makes acquisitions an increasingly important component of our future growth. We will continue to make prudent acquisitions and capital expenditures for manufacturing equipment and facilities to support long-term contracts for commercial and military aircraft and defense programs.
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We continue to depend on operating cash flow and the availability of our Credit Facilities to provide short-term liquidity. Cash generated from operations and bank borrowing capacity is expected to provide sufficient liquidity to meet our obligations during the next twelve months.

months from the date of issuance of these financial statements.
Cash Flow Summary
Net cash provided byused in operating activities for the ninethree months ended September 30, 2017 decreased to $27.4April 3, 2021 was $23.4 million, compared to $27.6$12.0 million for the ninethree months ended October 1, 2016.March 28, 2020. The lower nethigher cash generatedused in operating activities during the first ninethree months of 20172021 was primarily due to higher contract assets, lower net income,accrued and other liabilities, and higher inventories, partially offset by higher accounts payable mainly due to the timing of payments.payable.
Net cash used in investing activities of $83.5was $4.5 million for the ninethree months ended September 30, 2017April 3, 2021, compared to $3.7 million in the three months ended March 28, 2020. The higher net cash used during the first three months of 2021 compared to the prior year period was due to higher purchases of property and equipment.
Net cash used in financing activities was $11.6 million for the three months ended April 3, 2021, compared to net cash provided by financing activities of $42.6$41.7 million infor the ninethree months ended October 1, 2016 primarilyMarch 28, 2020. The higher net cash used in financing activities during the first three months of 2021 was mainly due to lower net draw downs on the payments for the purchase of LDS, net of cash acquired of $59.2 million in the current year nine month period compared to the prior year nine month period which included proceeds from the divestiture of our Pittsburgh and Miltec operations of approximately $55.3 million and purchases of property and equipment mainly to support the expansion of our Parsons, Kansas facility.
Net cash provided by financing activities for the nine months ended September 30, 2017 of $52.4 million was primarily due to net borrowings from the2019 Revolving Credit Facility, that was used for the purchase of LDS, partially offset by lower repayments on the Credit Facilities.

of term loans.
Off-Balance Sheet Arrangements
Our off-balance sheet arrangements consist of operating and finance leases not recorded as a result of the practical expedients utilized, right of offset of industrial revenue bonds and indemnities.associated failed sales-leasebacks on property and equipment, and indemnities, none of which we believe may have a material current or future effect on our financial condition, liquidity, capital resources, or results of operations.
Critical Accounting Policies
The preparation of our condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States requires estimation and judgment that affect the reported amounts of net revenues, expenses, assets and liabilities. For a description of our critical accounting policies, please refer to “Critical Accounting Policies” in Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our 20162020 Annual Report on Form 10-K. There have been no material changes in any of our critical accounting policies during the three and nine months ended September 30, 2017.April 3, 2021.
Recent Accounting Pronouncements
See “Part I, Item 1. Ducommun Incorporated and Subsidiaries—Notes to Condensed Consolidated Financial Statements—Note 1. Summary of Significant Accounting Policies—Recent Accounting Pronouncements” for further information.


Item 3. Quantitative and Qualitative Disclosures About Market Risk
Our main market risk exposure relates to changes in U.S. and U.K. interest rates on our outstanding long-term debt. At September 30, 2017,April 3, 2021, we had total borrowings of $224.7$313.0 million under our Credit Facilities.
The 2019 Term Loan and Revolving Credit Facility that bearbears interest, at our option, at a rate equal to either (i) the Eurodollar Rate (defined as LIBOR)the London Interbank Offered Rate [“LIBOR”]) plus an applicable margin ranging from 1.50% to 2.75%2.50% per year or (ii) the Base Rate (defined as the highest of [a] Federal Funds Rate plus 0.50%, [b] Bank of America’s prime rate, and [c] the Eurodollar Rate plus 1.00%) plus an applicable margin ranging from 0.50% to 1.75%1.50% per year, in each case based upon the consolidated total net adjusted leverage ratio.
The 2019 Revolving Credit Facility bears interest, at our option, at a rate equal to either (i) the Eurodollar Rate (defined as LIBOR) plus an applicable margin ranging from 1.50% to 2.50% per year or (ii) the Base Rate (defined as the highest of [a] Federal Funds Rate plus 0.50%, [b] Bank of America’s prime rate, and [c] the Eurodollar Rate plus 1.00%) plus an applicable margin ranging from 0.50% to 1.50% per year, in each case based upon the consolidated total net adjusted leverage ratio.
The 2018 Term Loan bears interest, at our option, at a rate equal to either (i) the Eurodollar Rate (defined as LIBOR plus an applicable margin ranging from 3.75% to 4.00% per year or (ii) the Base Rate (defined as the highest of [a] Federal Funds Rate plus 0.50%, [b] Bank of America’s prime rate, and [c] the Eurodollar Rate plus 1.00%) plus an applicable margin ranging from 3.75% to 4.00% per year, in each case based upon the consolidated total net adjusted leverage ratio.
A hypothetical 10% increase or decrease in the interest rate would have an immaterial impact on our financial condition and results of operations.

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Item 4. Controls and Procedures
Disclosure Controls and Procedures
The Company’s chief executive officer (“CEO”) and chief financial officer (“CFO”) have conducted an evaluation of the Company’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934 Rules 13a-15(e)1934), and 15d-15(e)) as of September 30, 2017. The Company had previously reported a material weakness in internal control over

financial reporting related to not maintaining effective controls related to the quarterly and annual accounting and disclosures for income taxes. This material weakness was described in Item 9A in the Management’s Report on Internal Control Over Financial Reporting in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. As a result of the material weakness in the Company’s internal control over financial reporting, which was not remediated as of September 30, 2017, the CEO and CFO concluded the Company’sthat such disclosure controls and procedures were not effective as of September 30, 2017.
Management’s Remediation Activities
We are committed to remediating the control deficiencies that constituteend of the material weakness described above. Our Chief Financial Officer is responsible for remediating the control deficiency that gave rise to the material weakness.
Actions to be taken or in process consist of ensuring we maintain a sustained period of operating effectiveness of our internal control over financial reporting related to the quarterly and annual accounting and disclosures for income taxes.
While significant progress has been made to enhance our internal control over financial reporting relating to the material weakness, additional time will be required to assess and ensure the sustainability of these processes and procedures. We expect the remedial actions described above will have had sufficient time to function during 2017 to allow management to conclude that the material weakness has been satisfactorily remediated and that the existing controls are operating effectively. However, we cannot make any assurances that such actions will be completed during 2017. Until the controls described above have had sufficient time for management to conclude that they are operating effectively, the material weakness described above will continue to exist.covered by this report.
Changes in Internal Control over Financial Reporting
There were no changes in our internal controlscontrol over financial reporting during the three months ended September 30, 2017April 3, 2021 that have materially affected, or are reasonably likely to materially affect, our internal controlscontrol over financial reporting.
 
PART II. OTHER INFORMATION


Item 1. Legal Proceedings
See Note 148 to our condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q for a description of our legal proceedings.


Item 1A. Risk Factors
See Part I, Item 1A of our Annual Report on Form 10-K (“Form 10-K”) for the year ended December 31, 20162020 for a discussion of our risk factors. There have been no material changes induring the ninethree months ended September 30, 2017April 3, 2021 to the risk factors disclosed in our Annual Report on Form 10-K for the year ended December 31, 2016.2020.


Item 4. Mine Safety Disclosures
Not applicable.

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Item 6. Exhibits
2.1 Agreement and Plan of Merger, dated as of April 3, 2011, among Ducommun Incorporated, DLBMS, Inc. and LaBarge, Inc. Incorporated by reference to Exhibit 2.1 to Form 8-K filed on April 5, 2011.
2.2 Agreement and Plan of Merger, dated as of September 11, 2017, among Ducommun LaBarge Technologies, Inc., LS Holdings Company LLC, and DLS Company LLC. Incorporated by reference to Exhibit 2.1 to Form 8-K filed on September 11, 2017.
2.3 Stock Purchase2.2 Agreement and Plan of Merger, dated January 22, 2016, by andas of October 8, 2019, among Ducommun Incorporated, Ducommun LaBarge Technologies, Inc., as Seller, LaBarge Electronics,DLT Acquisition, Inc., Nobles Parent Inc., and Intervala, LLC, as Buyer.the Stockholder Representative. Incorporated by reference to Exhibit 2.1 to Form 8-K dated January 25, 2016.filed on October 9, 2019.
2.4 Stock Purchase Agreement dated February 24, 2016, by and between Ducommun LaBarge Technologies, Inc., as Seller, and General Atomics, as Buyer.3.1     Restated Certificate of Incorporation filed with the Delaware Secretary of State on May 29, 1990. Incorporated by reference to Exhibit 2.13.1 to Form 8-K dated February 24, 2016.10-K for the year ended December 31, 1990.
3.1Restated Certificate of Incorporation filed with the Delaware Secretary of State on May 29, 1990. Incorporated by reference to Exhibit 3.1 to Form 10-K for the year ended December 31, 1990.
3.2 Certificate of Amendment of Certificate of Incorporation filed with the Delaware Secretary of State on May 27, 1998. Incorporated by reference to Exhibit 3.2 to Form 10-K for the year ended December 31, 1998.
3.3 Bylaws as amended and restated on March 19, 2013. Incorporated by reference to Exhibit 99.1 to Form 8-K dated March 22, 2013.
3.4 Amendment to Bylaws dated January 5, 2017. Incorporated by reference to Exhibit 99.2 to Form 8-K dated January 9, 2017.
3.5 Amendment to Bylaws dated February 21, 2018. Incorporated by reference to Exhibit 3.1 to Form 8-K dated February 26, 2018.
3.6 Amendment to Bylaws dated March 5, 2021. Incorporated by reference to Exhibit 3.1 to Form 8-K dated March 8, 2021.
4.1 Description of Ducommun Incorporated Securities Registered under Section 12 of the Exchange Act. Incorporated by reference to Exhibit 4.1 to Form 10-K for the year ended December 31, 2019.
10.1 Incremental Term Loan Lender Joinder Agreement and Additional Credit Extension Amendment, dated as of December 20, 2019, by and among Ducommun Incorporated, as Borrower, the subsidiaries of the Borrower party thereto, as Guarantors, Bank of America, N.A., as Administrative Agent, Swingline Lender and an L.C. Issuer, and the lender party thereto. Incorporated by reference to Exhibit 10.1 to Form 8-K filed on December 20, 2019.
10.2 Credit Agreement, dated as of June 26, 2015,November 21, 2018, among Ducommun Incorporated, certain of its subsidiaries, Bank of America, N.A., as administrative agent, swingline lender and issuing bank, and other lenders party thereto. Incorporated by reference to Exhibit 10.1 to Form 8-K dated Junefiled on November 26, 2015.2018.
10.2 First Amendment to Credit Agreement, dated as of July 14, 2017, among Ducommun Incorporated, certain of its subsidiaries, Bank of America, N.A., as administrative agent, swingline lender*10.3 2013 Stock Incentive Plan (Amended and issuing bank, and other lenders party thereto.Restated May 2, 2018). Incorporated by reference to Exhibit 10.2Appendix A of Definitive Proxy Statement on Schedule 14a, filed on March 23, 2018.
*10.4 2020 Employee Stock Incentive Plan. Incorporated by reference to Form 10-Q for the period ended July 1, 2017.Appendix A of Definitive Proxy Statement on Schedule 14a, filed on March 20, 2020.
*10.3 200710.5 2018 Employee Stock IncentivePurchase Plan. Incorporated by reference to Appendix B of Definitive Proxy Statement on Schedule 14a, filed on March 29, 2010.23, 2018.
*10.4 201310.6 2020 Employee Stock Incentive Plan (Amended and Restated March 18, 2015).Purchase Plan. Incorporated by reference to Appendix BA of Definitive Proxy Statement on Schedule 14a, filed on April 22, 2015.March 20, 2020.
*10.510.7 Form of Stock Option Agreement for 2016 and earlier. Incorporated by reference to Exhibit 10.8 to Form 10-K for the year ended December 31, 2003.
*10.610.8 Form of Stock Option Agreement for 2017 and after.2017. Incorporated by reference to Exhibit 10.5 to Form 10-K for the year ended December 31, 2016.
*10.710.9 Form of Performance Stock UnitOption Agreement for 20142018 and 2015.after. Incorporated by reference to Exhibit 10.194.7 to Form 10-Q dated April 28, 2014.S-8, filed on May 10, 2018.
*10.8 Form of Performance Stock Unit Agreement for 2016. Incorporated by reference to Exhibit 10.6 to Form 10-Q for the period ended April 2, 2016.
*10.910.10 Form of Restricted Stock Unit Agreement for 2016 and earlier.2017 through 2019. Incorporated by reference to Exhibit 10.9 to Form 10-K for the year ended December 31, 2016. *10.10 Form of Restricted Stock Unit Agreement for 2017 and after. Incorporated by reference to Exhibit 10.9 to Form 10-K for the year ended December 31, 2016.
*10.11 Form of Directors’ Restricted Stock Unit Agreement. Incorporated by reference to Exhibit 99.1 to Form 8-K dated May 10, 2010.
*10.12 Performance Restricted Stock Unit Agreement dated January 23, 2017 between Ducommun Incorporated and Stephen G. Oswald. Incorporated by reference to Exhibit 10.11 to Form 10-K for the year ended December 31, 2016.

*10.12 Form of Performance Stock Unit Agreement for 2020 and after. Incorporated by reference to Exhibit 10.18 to Form 10-Q for the period ended June 27, 2020.
*10.13 Form of Restricted Stock Unit Agreement for Non-Qualified Deferred Compensation Plan Participants for 2020 and after. Incorporated by reference to Exhibit 10.19 to Form 10-Q for the period ended June 27, 2020.
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Exhibit
No.    Description
*10.14 Form of Restricted Stock Unit Agreement for 2020 and after. Incorporated by reference to Exhibit 10.20 to Form 10-Q for the period ended June 27, 2020.
*10.15 Form of Stock Option Agreement for 2020 and after. Incorporated by reference to Exhibit 10.21 to Form 10-Q for the period ended June 27, 2020.
*10.16 Form of Performance Restricted Stock Unit Agreement for 2020. Incorporated by reference to Exhibit 10.22 to Form 10-Q for the period ended June 27, 2020.
*10.17    Form of Indemnity Agreement entered with all directors and officers of Ducommun. Incorporated by reference to Exhibit 10.8 to Form 10-K for the year ended December 31, 1990. All of the Indemnity Agreements are identical except for the name of the director or officer and the date of the Agreement:
*10.13Form of Indemnity Agreement entered with all directors and officers of Ducommun. Incorporated by reference to Exhibit 10.8 to Form 10-K for the year ended December 31, 1990. All of the Indemnity Agreements are identical except for the name of the director or officer and the date of the Agreement:
Director/OfficerDate of Agreement
Richard A. BaldridgeMarch 19, 2013
Gregory S. ChurchillShirley G. DrazbaMarch 19, 2013October 18, 2018
Robert C. DucommunDecember 31, 1985
Dean M. FlattNovember 5, 2009
Douglas L. GrovesFebruary 12, 2013
Jay L. HaberlandFebruary 2, 2009
Stephen G. OswaldJanuary 23, 2017
Amy M. PaulJanuary 23, 2017
Robert D. PaulsonMarch 25, 2003
Anthony J. ReardonJanuary 8, 2008
Jerry L. RedondoOctober 1, 2015
Rosalie F. RogersJuly 24, 2008
Rajiv A. TataJanuary 24, 2020
Christopher D. WamplerJanuary 1, 2016
PersonDate of Agreement
DouglasJerry L. GrovesRedondoJanuary 23, 2017
Amy M. PaulRosalie F. RogersJanuary 23, 2017
Anthony J. ReardonRajiv A. TataJanuary 24, 2020
Christopher D. WamplerJanuary 23, 2017
Jerry L. RedondoJanuary 23, 2017
Rosalie F. RogersJanuary 23, 2017
Christopher D. WamplerJanuary 23, 2017
31

Exhibit
No.    Description
101.INS     Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL
101.SCH    Inline XBRL Taxonomy Extension Schema
101.CAL    Inline XBRL Taxonomy Extension Calculation Linkbase
101.DEF    Inline XBRL Taxonomy Extension Definition Linkbase
101.LAB    Inline XBRL Taxonomy Extension Label Linkbase
101.PRE    Inline XBRL Taxonomy Extension Presentation Linkbase
104    Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
___________________
* Indicates an executive compensation plan or arrangement.



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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.

Date: May 4, 2021By:/s/ Stephen G. Oswald
Stephen G. Oswald
Chairman, President and Chief Executive Officer
(Principal Executive Officer)
Date: May 4, 2021By:/s/ Christopher D. Wampler
Christopher D. Wampler
Vice President, Chief Financial Officer, Controller and Treasurer
(Principal Financial and Principal Accounting Officer)
Date: November 1, 2017By:/s/ Stephen G. Oswald
Stephen G. Oswald
President and Chief Executive Officer
(Principal Executive Officer)
Date: November 1, 2017By:/s/ Douglas L. Groves
Douglas L. Groves
Vice President, Chief Financial Officer and Treasurer
(Principal Financial Officer)
Date: November 1, 2017By:/s/ Christopher D. Wampler
Christopher D. Wampler
Vice President, Controller and Chief Accounting Officer
(Principal Accounting Officer)





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