10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

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

For the quarterly period ended June 30, 2018

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 0-7087

ASTRONICS CORPORATION

(Exact name of registrant as specified in its charter)

New York (State or other jurisdiction of incorporation or organization)	16-0959303 (IRS Employer Identification Number)
130 Commerce Way, East Aurora, New York (Address of principal executive offices)	14052 (Zip code)

(716) 805-1599

(Registrant’s telephone number, including area code)

NOT APPLICABLE

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(g) of the Act:

$.01 par value Common Stock, $.01 par value Class B Stock

(Title of Class)

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, and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “large accelerated filer”, an “accelerated filer”, a “non-accelerated filer” and a “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	ý	Accelerated filer	¨	Emerging growth company	¨
Non-accelerated filer	¨	Smaller Reporting Company	¨

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

of the Exchange Act. ¨

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

As of June 30, 2018, 28,101,498 shares of common stock were outstanding consisting of 21,543,627 shares of common stock ($.01 par value) and 6,557,871 shares of Class B common stock ($.01 par value).

TABLE OF CONTENTS

			PAGE
PART I	FINANCIAL INFORMATION
	Item 1	Financial Statements:
		•      Consolidated Condensed Balance Sheets as of June 30, 2018 and December 31, 2017	3
		•      Consolidated Condensed Statements of Operations for the Three and Six Months Ended June 30, 2018 and July 1, 2017	4
		•      Consolidated Condensed Statements of Comprehensive Income for the Three and Six Months Ended June 30, 2018 and July 1, 2017	5
		•      Consolidated Condensed Statements of Cash Flows for the Six Months Ended June 30, 2018 and July 1, 2017	6
		•     Notes to Consolidated Condensed Financial Statements	7
	Item 2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	23
	Item 3	Quantitative and Qualitative Disclosures about Market Risk	30
	Item 4	Controls and Procedures	30
PART II	OTHER INFORMATION
	Item 1	Legal Proceedings	31
	Item 1a	Risk Factors	32
	Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	32
	Item 3	Defaults Upon Senior Securities	32
	Item 4	Mine Safety Disclosures	32
	Item 5	Other Information	32
	Item 6	Exhibits	33
SIGNATURES			34

2

Part I – Financial Information

Item 1. Financial Statements

ASTRONICS CORPORATION

Consolidated Condensed Balance Sheets

June 30, 2018 with Comparative Figures for December 31, 2017

(In thousands)

	June 30, 2018			December 31, 2017
	(Unaudited)
Current Assets:
Cash and Cash Equivalents	$	10,608		$	17,914
Accounts Receivable, Net of Allowance for Doubtful Accounts	169,496			132,633
Inventories	159,479			150,196
Prepaid Expenses and Other Current Assets	13,912			14,586
Total Current Assets	353,495			315,329
Property, Plant and Equipment, Net of Accumulated Depreciation	124,696			125,830
Other Assets	18,451			15,659
Intangible Assets, Net of Accumulated Amortization	142,544			153,493
Goodwill	125,237			125,645
Total Assets	$	764,423		$	735,956
Current Liabilities:
Current Maturities of Long-term Debt	$	2,190		$	2,689
Accounts Payable	49,580			41,846
Accrued Expenses and Other Current Liabilities	38,590			38,749
Customer Advance Payments and Deferred Revenue	25,429			19,607
Total Current Liabilities	115,789			102,891
Long-term Debt	263,155			269,078
Other Liabilities	34,189			34,060
Total Liabilities	413,133			406,029
Shareholders’ Equity:
Common Stock	298			297
Accumulated Other Comprehensive Loss	(15,867		)	(13,352		)
Other Shareholders’ Equity	366,859			342,982
Total Shareholders’ Equity	351,290			329,927
Total Liabilities and Shareholders’ Equity	$	764,423		$	735,956

See notes to consolidated condensed financial statements.

3

ASTRONICS CORPORATION

Consolidated Condensed Statements of Operations

Three and Six Months Ended June 30, 2018 With Comparative Figures for 2017

(Unaudited)

(In thousands, except per share data)

	Six Months Ended				Three Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Sales	$	387,665	$	303,510	$	208,606	$	151,114
Cost of Products Sold	300,961		231,043		159,034		116,964
Gross Profit	86,704		72,467		49,572		34,150
Selling, General and Administrative Expenses	59,943		43,474		29,443		22,091
Income from Operations	26,761		28,993		20,129		12,059
Other Expense, Net of Other Income	838		620		463		310
Interest Expense, Net of Interest Income	4,815		2,313		2,484		1,180
Income Before Income Taxes	21,108		26,060		17,182		10,569
Provision for Income Taxes	3,789		6,788		3,157		2,884
Net Income	$	17,319	$	19,272	$	14,025	$	7,685
Earnings Per Share:
Basic	$	0.62	$	0.66	$	0.50	$	0.27
Diluted	$	0.60	$	0.64	$	0.49	$	0.26

See notes to consolidated condensed financial statements.

4

ASTRONICS CORPORATION

Consolidated Condensed Statements of Comprehensive Income

Three and Six Months Ended June 30, 2018 With Comparative Figures for 2017

(Unaudited)

(In thousands)

	Six Months Ended					Three Months Ended
	June 30, 2018			July 1, 2017		June 30, 2018			July 1, 2017
Net Income	$	17,319		$	19,272	$	14,025		$	7,685
Other Comprehensive (Loss) Income:
Foreign Currency Translation Adjustments	(1,572		)	2,491		(1,805		)	2,096
Retirement Liability Adjustment – Net of Tax	430			262		215			131
Total Other Comprehensive (Loss) Income	(1,142		)	2,753		(1,590		)	2,227
Comprehensive Income	$	16,177		$	22,025	$	12,435		$	9,912

See notes to consolidated condensed financial statements.

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ASTRONICS CORPORATION

Consolidated Condensed Statements of Cash Flows

Six Months Ended June 30, 2018

With Comparative Figures for 2017

(Unaudited)

(In thousands)

	Six Months Ended
	June 30, 2018			July 1, 2017
Cash Flows From Operating Activities:
Net Income	$	17,319		$	19,272
Adjustments to Reconcile Net Income to Cash Provided By Operating Activities:
Depreciation and Amortization	18,584			12,587
Provisions for Non-Cash Losses on Inventory and Receivables	1,819			918
Stock Compensation Expense	1,637			1,456
Deferred Tax Benefit	(516		)	(536		)
Other	(431		)	(804		)
Cash Flows from Changes in Operating Assets and Liabilities:
Accounts Receivable	(33,347		)	(7,076		)
Inventories	(19,761		)	(10,453		)
Accounts Payable	7,981			3,349
Accrued Expenses	53			(7,106		)
Other Current Assets and Liabilities	(404		)	(2,668		)
Customer Advanced Payments and Deferred Revenue	14,469			(4,143		)
Income Taxes	(189		)	(1,028		)
Supplemental Retirement and Other Liabilities	896			758
Cash Provided By Operating Activities	8,110			4,526
Cash Flows From Investing Activities:
Acquisition of Business, Net of Cash Acquired	—			(10,223		)
Capital Expenditures	(8,495		)	(5,750		)
Other Investing Activities	—			186
Cash Used For Investing Activities	(8,495		)	(15,787		)
Cash Flows From Financing Activities:
Proceeds from Long-term Debt	30,015			22,000
Payments for Long-term Debt	(36,416		)	(7,341		)
Purchase of Outstanding Shares for Treasury	—			(13,524		)
Debt Acquisition Costs	(516		)	—
Proceeds from Exercise of Stock Options	281			317
Cash (Used For) Provided By Financing Activities	(6,636		)	1,452
Effect of Exchange Rates on Cash	(285		)	176
Decrease in Cash and Cash Equivalents	(7,306		)	(9,633		)
Cash and Cash Equivalents at Beginning of Period	17,914			17,901
Cash and Cash Equivalents at End of Period	$	10,608		$	8,268

See notes to consolidated condensed financial statements.

6

ASTRONICS CORPORATION

Notes to Consolidated Condensed Financial Statements

June 30, 2018

(Unaudited)

1) Basis of Presentation

The accompanying unaudited statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation have been included.

Operating Results

The results of operations for any interim period are not necessarily indicative of results for the full year. Operating results for the six months ended June 30, 2018 are not necessarily indicative of the results that may be expected for the year ending December 31, 2018.

The balance sheet at December 31, 2017 has been derived from the audited financial statements at that date, but does not include all of the information and footnotes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements.

For further information, refer to the financial statements and footnotes thereto included in Astronics Corporation’s 2017 annual report on Form 10-K.

Description of the Business

Astronics Corporation (“Astronics” or the “Company”) is a leading provider of advanced technologies to the global aerospace, defense, electronics and semiconductor industries. Our products and services include advanced, high-performance electrical power generation, distribution and motion systems, lighting and safety systems, avionics products, systems and certification, aircraft structures and automated test systems.

We have operations in the United States (“U.S.”), Canada and France. We design and build our products through our wholly owned subsidiaries Astronics Advanced Electronic Systems Corp. (“AES”); Astronics AeroSat Corporation (“AeroSat”); Armstrong Aerospace, Inc. (“Armstrong”); Astronics Test Systems, Inc. (“ATS”); Ballard Technology, Inc. (“Ballard”); Astronics Connectivity Systems and Certification Corp. (“CSC”); Astronics Custom Control Concepts Inc. (“CCC”); Astronics DME LLC (“DME”); Luminescent Systems, Inc. (“LSI”); Luminescent Systems Canada, Inc. (“LSI Canada”); Max-Viz, Inc. (“Max-Viz”); Peco, Inc. (“Peco”); and PGA Electronic s.a. (“PGA”).

On April 3, 2017, Astronics Custom Control Concepts Inc., a wholly owned subsidiary of the Company acquired substantially all the assets and certain liabilities of Custom Control Concepts LLC, located in Kent, Washington. CCC is a provider of cabin management and in-flight entertainment systems for a range of aircraft. CCC is included in our Aerospace segment.

On December 1, 2017, Astronics acquired substantially all of the assets of Telefonix Inc. and a related company, Product Development Technologies, LLC and its subsidiaries, to become CSC, primarily located in Waukegan and Lake Zurich, Illinois. CSC designs and manufactures advanced in-flight entertainment and connectivity equipment, and provides industry leading design consultancy services for the global aerospace industry. CSC is included in our Aerospace Segment.

For additional information regarding these acquisitions see Note 18.

Cost of Products Sold, Engineering and Development and Selling, General and Administrative Expenses

Cost of products sold includes the costs to manufacture products such as direct materials and labor and manufacturing overhead as well as all engineering and development costs. The Company is engaged in a variety of engineering and design activities as well as basic research and development activities directed to the substantial improvement or new application of the Company’s existing technologies. These costs are expensed when incurred and included in cost of products sold. Research and development, design and related engineering amounted to $28.9 million and $23.0 million for the three months ended and $57.8 million and $45.8 million for the six months ended June 30, 2018 and July 1, 2017, respectively. Selling, general and administrative expenses include costs primarily related to our sales and marketing departments and administrative departments. Interest expense is shown net of interest income. Interest income was insignificant for the three and six months ended June 30, 2018 and July 1, 2017.

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Foreign Currency Translation

The aggregate transaction gain or loss included in operations was insignificant for the three and six months ended June 30, 2018 and July 1, 2017.

Precontract Costs

The Company may, from time to time, incur costs in excess of the amounts required for existing contracts. If it is determined the costs are probable of recovery from future orders, the precontract costs incurred are capitalized, excluding start-up costs which are expensed as incurred. Capitalized precontract costs are included in Inventories in the accompanying Consolidated Balance Sheets. Should future orders not materialize or it is determined the costs are no longer probable of recovery, the capitalized costs are written off.  Included in inventories at June 30, 2018 are capitalized precontract costs of $9.5 million.

Newly Adopted and Recent Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), that, together with several subsequent updates, outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance. ASU 2014-09 is based on the principle that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  ASU 2014-09 also provides for enhanced disclosure requirements surrounding revenue recognition. 

Prior to the adoption of ASU 2014-09, revenue on a significant portion of our contracts had been recognized at the time of shipment of goods, transfer of title and customer acceptance, as required. Our revenue transactions generally consist of a single performance obligation to transfer promised goods and are not accounted for under industry-specific guidance. We have retained much of the same accounting treatment used to recognize revenue under the prior standard. However, the adoption of ASU 2014-09 required us to accelerate the recognition of revenue as compared to the prior standard for certain customers, in cases where we produce products unique to those customers, and for which we would have an enforceable right of payment, inclusive of profit, for production completed to date.

We adopted ASU 2014-09 on January 1, 2018 using the modified retrospective method, which required the recognition of the cumulative effect of the transition as an adjustment to retained earnings. The Company elected to apply the standard only to open contracts as of January 1, 2018. Based on the application of the changes described above, we recognized a transition adjustment of $3.3 million, net of tax effects, which increased our January 1, 2018 retained earnings. Based on our existing operations, ASU 2014-09 is not expected to have a material impact to net earnings for the year ended December 31, 2018. Refer to Note 2 for additional information.

During the first quarter of 2018, the Company early-adopted ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows for a reclassification from accumulated other comprehensive income (loss) to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. The Company applied the guidance as of the beginning of the period of adoption and reclassified approximately $1.4 million from accumulated other comprehensive loss to retained earnings due to the change in federal corporate tax rate.

In February 2016, the FASB issued ASU No. 2016-02, Leases. The new standard is effective for reporting periods beginning after December 15, 2018. Early adoption is permitted. The standard will require lessees to report most leases as assets and liabilities on the balance sheet, while lessor accounting will remain substantially unchanged. The standard requires a modified retrospective transition approach for existing leases, whereby the new rules will be applied to the earliest year presented. The Company is currently evaluating the impact of ASU 2016-02 on our financial statements.

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfer of Assets Other Than Inventory, which requires entities to recognize income tax consequences of intra-entity transfers of assets, other than inventory, when the transfer occurs rather than when the asset is sold to a third party as is the case under current GAAP. The Company adopted ASU 2016-16 effective January 1, 2018, and such adoption did not have a material impact on the consolidated financial statements

In January 2017, the FASB issued ASU No. 2017-01, Clarifying the Definition of a Business, which narrows the existing definition of a business and provides a framework for evaluating whether a transaction should be accounted for as an acquisition (or disposal) of assets or a business. The ASU requires an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets; if so, the set of transferred assets and activities (collectively, the set) is not a business. To be considered a business, the set would need to

8

include an input and a substantive process that together significantly contribute to the ability to create outputs. The standard also narrows the definition of outputs. The definition of a business affects areas of accounting such as acquisitions, disposals and goodwill. Under the new guidance, fewer acquired sets are expected to be considered businesses. The Company adopted ASU 2017-01 effective January 1, 2018. The Company will apply this guidance to applicable transactions after the adoption date on a prospective basis. No applicable transactions have occurred as of June 30, 2018.

In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. This ASU changes how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. This ASU was adopted as of January 1, 2018 on a retrospective basis. Under the new standard, only the service cost component of net periodic benefit cost would be included in operating expenses. All other net periodic benefit costs components (such as interest cost, prior service cost amortization and actuarial gain/loss amortization) would be reported outside of operating income. These include components totaling $0.5 million and $0.4 million for the three months ended and $1.0 million and $0.9 million for the six months ended June 30, 2018 and July 1, 2017, respectively, that no longer are included within Selling, General and Administrative Expenses and instead are reported outside of income from operations, within Other Expense, Net of Other Income in our Consolidated Statements of Operations.

In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting, that clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as a modification. The general model for accounting for modifications of share-based payment awards is to record the incremental value arising from the changes as additional compensation cost. Under the new standard, fewer changes to the terms of an award would require accounting under this modification model. This ASU was adopted as of January 1, 2018. As the Company has not made changes to the terms or conditions of its issued share-based payment awards, this ASU had no impact on our consolidated results of operations and financial condition.

2) Revenue

As discussed in Note 1, ASU 2014-09 was adopted on January 1, 2018 using the modified retrospective method, which required the recognition of the cumulative effect of the transition as an adjustment to retained earnings.

Revenue is recognized when, or as, the Company transfers control of promised products or services to a customer in an amount that reflects the consideration the Company expects to be entitled in exchange for transferring those products or service.

Payment terms and conditions vary by contract, although terms generally include a requirement of payment within a range from 30 to 60 days, or in certain cases, up-front deposits. In circumstances where the timing of revenue recognition differs from the timing of invoicing, the Company has determined that the Company's contracts generally do not include a significant financing component. Taxes collected from customers, which are subsequently remitted to governmental authorities, are excluded from sales.

The Company recognizes an asset for the incremental, material costs of obtaining a contract with a customer if the Company expects the benefit of those costs to be longer than one year and the costs are expected to be recovered. As of June 30, 2018, the Company does not have such incremental, material costs on any open contracts with an original expected duration of greater than one year, and therefore such costs are expensed as incurred. These incremental costs include, but are not limited to, sales commissions incurred to obtain a contract with a customer.

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. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, 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 is not separately identifiable from other promises in the contracts which are, therefore, not distinct. Promised goods or services that are immaterial in the context of the contract are not separately assessed as performance obligations.

Some of our contracts have multiple performance obligations, most commonly due to the contract covering multiple phases of the product lifecycle (development, production, maintenance and support). For contracts with multiple performance obligations, the contract’s transaction price is allocated 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 standalone selling price is the expected cost plus a margin approach, under which expected costs are forecast to satisfy a performance obligation and then an appropriate margin is added for that distinct good or service. Shipping and handling activities that occur after the customer has obtained control of the good are considered fulfillment activities, not performance obligations.

9

Some of our contracts offer price discounts or free units after a specified volume has been purchased.  The Company evaluates these options to determine whether they provide a material right to the customer, or represent a separate performance obligation. If the option provides a material right to the customer, revenue is allocated to these rights and recognized when those future goods or services are transferred, or when the option expires.

Contract modifications are routine in the performance of our contracts. Contracts are often modified to account for changes in contract specifications or requirements. In most instances, contract modifications are for goods or services that are not distinct, and, therefore, are accounted for as part of the existing contract. The aggregate effect of all modifications as of the period beginning January 1, 2018 has been reflected when identifying the satisfied and unsatisfied performance obligations, determining the transaction price and allocating the transaction price. Contracts modified prior to January 1, 2018 have not been retrospectively restated.

The vast majority of the Company’s revenue from contracts with customers is recognized at a point in time, when the customer obtains control of the promised product, which is generally upon delivery and acceptance by the customer.  These contracts may provide credits or incentives, which may be accounted for as variable consideration.  Variable consideration is estimated at the most likely amount to predict the consideration to which the Company will be entitled, and only to the extent it is probable that a subsequent change in estimate will not result in a significant revenue reversal when estimating the amount of revenue to recognize.  Variable consideration is treated as a change to the sales transaction price and based on an assessment of all information (i.e., historical, current and forecasted) that is reasonably available to the Company, and estimated at contract inception and updated at the end of each reporting period as additional information becomes available. Most of our contracts do not contain rights to return product; where this right does exist, it is evaluated as possible variable consideration.

For contracts with customers in which the Company satisfies a promise to the customer to provide a product that has no alternative use to the Company and the Company has enforceable rights to payment for progress completed to date inclusive of profit, the Company satisfies the performance obligation and recognizes revenue over time, using costs incurred to date relative to total estimated costs at completion to measure progress toward satisfying our performance obligations.  Incurred cost represents work performed, which corresponds with, and thereby best depicts, the transfer of control to the customer.  Contract costs include labor, material and overhead. 

The Company also recognizes revenue from service contracts (including service-type warranties) over time.  The Company recognizes revenue over time during the term of the agreement as the customer is simultaneously receiving and consuming the benefits provided throughout the Company’s performance.  Therefore, due to control transferring over time, the Company typically recognizes revenue on a straight-line basis throughout the contract period.

On June 30, 2018, we had $376.9 million of remaining performance obligations, which we refer to as total backlog. We expect to recognize approximately $309.1 million of our remaining performance obligations as revenue in 2018.

We recognized the cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of retained earnings. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

The cumulative effect of the changes made to our consolidated January 1, 2018 balance sheet for the adoption of  ASU 2014-09, were as follows (in thousands):

Balance Sheet	Balance at December 31, 2017		Adjustments Due to ASU 2014-09			Balance at January 1, 2018
Assets
Accounts Receivable, Net of Allowance for Doubtful Accounts	$	132,633	$	4,005		$	136,638
Inventories	$	150,196	$	(7,957	)	$	142,239
Liabilities
Accrued Income Taxes	$	261	$	1,028		$	1,289
Customer Advance Payments and Deferred Revenue	$	19,607	$	(8,176	)	$	11,431
Deferred Income Taxes	$	5,121	$	(72	)	$	5,049
Equity
Retained Earnings	$	325,191	$	3,268		$	328,459

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In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on our consolidated income statement and balance sheet was as follows (in thousands):

	For the Six Months Ended June 30, 2018							For the Three Months Ended June 30, 2018
Income Statement	As Reported		Effect of Change Higher/(Lower)			Balances Without Adoption of ASU 2014-09		As Reported		Effect of Change Higher/(Lower)			Balances Without Adoption of ASU 2014-09
Revenues
Aerospace	$	330,804	$	(771	)	$	331,575	$	166,204	$	(1,429	)	$	167,633
Test Systems	$	56,861	$	(575	)	$	57,436	$	42,402	$	(2,536	)	$	44,938
Costs and Expenses
Cost of Products Sold	$	300,961	$	(1,467	)	$	302,428	$	159,034	$	(2,814	)	$	161,848
Provision for Income Taxes	$	3,789	$	21		$	3,768	$	3,157	$	(272	)	$	3,429
Net Income	$	17,319	$	100		$	17,219	$	14,025	$	(879	)	$	14,904

	June 30, 2018
Balance Sheet	As Reported		Effect of Change Higher/(Lower)			Balances Without Adoption of ASU 2014-09
Assets
Accounts Receivable, Net of Allowance for Doubtful Accounts	$	169,496	$	6,330		$	163,166
Inventories	$	159,479	$	(6,490	)	$	165,969
Liabilities
Accrued Expenses and Other Current Liabilities	$	38,590	$	1,295		$	37,295
Customer Advance Payments and Deferred Revenue	$	25,429	$	(4,505	)	$	29,934
Other Liabilities	$	34,189	$	(318	)	$	34,507
Equity
Other Shareholders' Equity	$	366,859	$	3,368		$	363,491

Costs in excess of billings includes unbilled amounts resulting from revenues under contracts with customers that are satisfied over time and when the cost-to-cost measurement method of revenue recognition is utilized and revenue recognized exceeds the amount billed to the customer, and right to payment is not just subject to the passage of time. Amounts may not exceed their net realizable value. Costs in excess of billings are classified as current assets, within Accounts Receivable, Net of Allowance for Doubtful Accounts on our Consolidated Balance Sheet.

Billings in excess of cost includes billings in excess of revenue recognized as well as deferred revenue, which includes advanced payments, up-front payments, and progress billing payments. Billings in excess of cost are classified as current liabilities, reported in our Consolidated Balance Sheet within Customer Advance Payments and Deferred Revenue. To determine the revenue recognized in the period from the beginning balance of billings in excess of cost, the contract liability as of the beginning of the period is recognized as revenue on a contract-by-contract basis when the Company incurs costs to satisfy the performance obligation related to the individual contract. Once the beginning contract liability balance for an individual contract has been fully recognized as revenue, any additional payments received in the period are recognized as revenue once the related costs have been incurred.

During the three months ended and six months ended June 30, 2018, we recognized $8.4 million and $11.6 million, respectively, in revenues that were included in the contract liability balance at the adoption date.

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The Company's contract assets and contract liabilities consist of costs in excess of billings and billings in excess of cost, respectively. The following table presents the beginning and ending balances of contract assets and contract liabilities during the six months ended June 30, 2018 (in thousands):

	Contract Assets		Contract Liabilities
Beginning Balance, January 1, 2018 (1)	$	24,423	$	11,431
Ending Balance, June 30, 2018	$	20,672	$	25,429
(1) Due to the adoption of ASU 2014-09 effective January 1, 2018, the Company recorded a transition adjustment to the opening balance of Contract Assets and Contract Liabilities at January 1, 2018. Refer to the cumulative effect of the changes table above for further explanation of the changes made to our consolidated January 1, 2018 balance sheet.

The following table presents our revenue disaggregated by Market Segments (in thousands):

	Six Months Ended				Three Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Aerospace Segment
Commercial Transport	$	265,847	$	208,079	$	132,797	$	98,355
Military	30,285		30,931		16,270		15,785
Business Jet	21,002		18,251		10,338		10,716
Other	13,670		9,113		6,799		4,691
Aerospace Total	330,804		266,374		166,204		129,547
Test Systems Segment
Semiconductor	38,465		11,711		31,405		7,080
Aerospace & Defense	18,396		25,425		10,997		14,487
Test Systems Total	56,861		37,136		42,402		21,567
Total	$	387,665	$	303,510	$	208,606	$	151,114

The following table presents our revenue disaggregated by Product Lines (in thousands):

	Six Months Ended				Three Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Aerospace Segment
Electrical Power & Motion	$	140,321	$	135,040	$	67,643	$	62,597
Lighting & Safety	85,763		85,316		44,121		42,646
Avionics	69,295		20,076		36,272		10,940
Systems Certification	9,655		4,952		4,872		2,793
Structures	12,100		11,877		6,497		5,880
Other	13,670		9,113		6,799		4,691
Aerospace Total	330,804		266,374		166,204		129,547
Test Systems	56,861		37,136		42,402		21,567
Total	$	387,665	$	303,510	$	208,606	$	151,114

3) Inventories

Inventories are as follows:

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(In thousands)	June 30, 2018		December 31, 2017
Finished Goods	$	29,276	$	35,193
Work in Progress	40,560		33,219
Raw Material	89,643		81,784
	$	159,479	$	150,196

4) Property, Plant and Equipment

The following table summarizes Property, Plant and Equipment as follows:

(In thousands)	June 30, 2018		December 31, 2017
Land	$	11,212	$	11,237
Buildings and Improvements	82,000		81,872
Machinery and Equipment	105,991		105,827
Construction in Progress	8,356		9,761
	207,559		208,697
Less Accumulated Depreciation	82,863		82,867
	$	124,696	$	125,830

5) Intangible Assets

The following table summarizes acquired intangible assets as follows:

		June 30, 2018				December 31, 2017
(In thousands)	Weighted Average Life	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Patents	11 Years	$	2,146	$	1,672	$	2,146	$	1,629
Non-compete Agreement	4 Years	10,900		3,184		10,900		1,687
Trade Names	10 Years	11,471		4,648		11,492		4,114
Completed and Unpatented Technology	10 Years	38,078		13,945		38,114		11,931
Backlog	2 Years	14,424		14,424		14,424		12,184
Customer Relationships	15 Years	137,902		34,504		137,967		30,005
Total Intangible Assets	12 Years	$	214,921	$	72,377	$	215,043	$	61,550

All acquired intangible assets other than goodwill and one trade name are being amortized. Amortization expense for acquired intangibles is summarized as follows:

	Six Months Ended				Three Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Amortization Expense	$	10,868	$	5,340	$	4,867	$	2,722

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Amortization expense for acquired intangible assets expected for 2018 and for each of the next five years is summarized as follows:

(In thousands)
2018	$	19,384
2019	16,700
2020	15,975
2021	14,065
2022	13,631
2023	12,463

6) Goodwill

The following table summarizes the changes in the carrying amount of goodwill for the six months ended June 30, 2018:

(In thousands)	December 31, 2017		Acquisition/Adjustments			Foreign Currency Translation			June 30, 2018
Aerospace	$	125,645	$	(141	)	$	(267	)	$	125,237
Test Systems	—		—			—			—
	$	125,645	$	(141	)	$	(267	)	$	125,237

7) Long-term Debt and Notes Payable

The Company's Fourth Amended and Restated Credit Agreement (the “Original Facility”) provided for a $350 million revolving credit line with the option to increase the line by up to $150 million. The maturity date of the Original Facility was January 13, 2021. On February 16, 2018, the Company modified and extended the Original Facility by entering into the Fifth Amended and Restated Credit Agreement (the “Agreement”), which provides for a $500 million revolving credit line with the option to increase the line by up to $150 million. A new lender was added to the facility as well. The outstanding balance of the Original Facility was rolled into the Agreement on the date of closing. The maturity date of the loans under the Agreement is February 16, 2023. At June 30, 2018, there was $257.0 million outstanding on the revolving credit facility and there remains $241.9 million available, net of outstanding letters of credit. The credit facility allocates up to $20 million of the $500 million revolving credit line for the issuance of letters of credit, including certain existing letters of credit. At June 30, 2018, outstanding letters of credit totaled $1.1 million.

The maximum permitted leverage ratio of funded debt to Adjusted EBITDA (as defined in the Agreement) is 3.75 to 1, increasing to 4.50 to 1 for up to four fiscal quarters following the closing of an acquisition permitted under the Agreement, subject to limitations. The Company’s leverage ratio was 2.80 to 1 at June 30, 2018. The Company will pay interest on the unpaid principal amount of the facility at a rate equal to one-, three- or six-month LIBOR plus between 1.00% and 1.50% based upon the Company’s leverage ratio. The Company will also pay a commitment fee to the lenders in an amount equal to between 0.10% and 0.20% on the undrawn portion of the credit facility, based upon the Company’s leverage ratio.

The Company’s obligations under the Credit Agreement as amended are jointly and severally guaranteed by each domestic subsidiary of the Company other than a non-material subsidiary. The obligations are secured by a first priority lien on substantially all of the Company’s and the guarantors’ assets.

In the event of voluntary or involuntary bankruptcy of the Company or any subsidiary, all unpaid principal and other amounts owing under the Agreement automatically become due and payable. Other events of default, such as failure to make payments as they become due and breach of financial and other covenants, change of control, judgments over a certain amount, and cross default under other agreements give the Agent the option to declare all such amounts immediately due and payable.

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8) Product Warranties

In the ordinary course of business, the Company warrants its products against defects in design, materials and workmanship typically over periods ranging from 12 to 60 months. The Company determines warranty reserves needed by product line based on experience and current facts and circumstances. Activity in the warranty accrual is summarized as follows: 

	Six Months Ended						Three Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Balance at Beginning of Period	$	5,136		$	4,675		$	5,115		$	4,357
Acquisitions	—			359			—			359
Warranties Issued	1,301			832			734			365
Warranties Settled	(1,285		)	(1,224		)	(645		)	(517		)
Reassessed Warranty Exposure	28			(5		)	(24		)	73
Balance at End of Period	$	5,180		$	4,637		$	5,180		$	4,637

9) Income Taxes

The effective tax rates were approximately 18.0% and 26.0% for the six months ended and 18.4% and 27.3% for the three months ended June 30, 2018 and July 1, 2017, respectively. The 2018 tax rates were favorably impacted relative to the applicable year's statutory rate by the federal research and development tax credit, the impact of which was partially offset by state tax expense.

On December 22, 2017, the President of the United States signed into law the Tax Cuts and Jobs Act (the “Act”). The legislation significantly changed U.S. tax law by, among other things, lowering corporate income tax rates, implementing a territorial tax system and imposing a repatriation tax on deemed repatriated earnings of foreign subsidiaries. The Act permanently reduced the U.S. corporate income tax rate from a maximum of 35% to a 21% rate, effective January 1, 2018.

While the Tax Cuts and Jobs Act provides for a territorial tax system, beginning in 2018, it includes the foreign-derived intangible income (“FDII”) and global intangible low-taxed income (“GILTI”) provisions. The Company elected to account for GILTI tax in the period in which it is incurred. The GILTI provisions require the Company to include in its U.S. income tax return foreign subsidiary earnings in excess of an allowable return on the foreign subsidiary’s tangible assets. The GILTI tax expense resulted from required allocations of interest expense to the GILTI income, which created a U.S. foreign tax credit limitation. The FDII provisions allow for a deduction equal to a percentage of the foreign-derived intangible income of a domestic corporation. As a result of these provisions, net, the Company’s effective tax rate decreased approximately 0.3% and increased approximately 0.2% for the six months and three months ended June 30, 2018, respectively.

On December 22, 2017, the SEC staff issued Staff Accounting Bulletin No. 118 (“SAB 118”) to address the application of GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Act. The Company recognized provisional tax impacts related to the deemed repatriated earnings and the revaluation of deferred tax assets and liabilities in its consolidated financial statements for the year ended December 31, 2017. During the six months and three months ended June 30, 2018, the Company did not make any adjustments to its provisional amounts included in its consolidated financial statements for the year ended December 31, 2017. The company is still obtaining and analyzing historical records and finalizing its calculation of these provisional amounts. The accounting is expected to be completed in the fourth quarter of 2018 after the 2017 U.S. corporate income tax return is filed.

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10) Shareholders’ Equity

The changes in shareholders’ equity for the six months ended June 30, 2018 are summarized as follows:

				Number of Shares
(Dollars and Shares in thousands)	Amount			Common Stock			Convertible Class B Stock
Shares Authorized				40,000			15,000
Share Par Value				$	0.01		$	0.01
COMMON STOCK
Beginning of Period	$	297		22,861			6,852
Conversion of Class B Shares to Common Shares	—			332			(332		)
Exercise of Stock Options	1			26			38
End of Period	$	298		23,219			6,558
ADDITIONAL PAID IN CAPITAL
Beginning of Period	$	67,791
Stock Compensation Expense	1,637
Exercise of Stock Options	280
End of Period	$	69,708
ACCUMULATED OTHER COMPREHENSIVE LOSS
Beginning of Period	$	(13,352	)
Adoption of ASU 2018-02	(1,373		)
Foreign Currency Translation Adjustment	(1,572		)
Retirement Liability Adjustment – Net of Tax	430
End of Period	$	(15,867	)
RETAINED EARNINGS
Beginning of Period	$	325,191
Adoption of ASU 2014-09	3,268
Adoption of ASU 2018-02	1,373
Net Income	17,319
End of Period	$	347,151
TREASURY STOCK
Beginning of Period	$	(50,000	)	(1,675		)
Purchase	—			—
End of Period	$	(50,000	)	(1,675		)
TOTAL SHAREHOLDERS’ EQUITY
Beginning of Period	$	329,927
End of Period	$	351,290		21,544			6,558

On February 24, 2016, the Company’s Board of Directors authorized the repurchase of up to $50 million of common stock (the “Buyback Program”). The Buyback Program allowed the Company to purchase shares of its common stock in accordance with applicable securities laws on the open market or through privately negotiated transactions. The Company has repurchased approximately 1,675,000 shares and has completed that program. On December 12, 2017, the Company’s Board of Directors authorized an additional repurchase of up to $50 million. No amounts have been repurchased under the new program as of June 30, 2018.

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11) Earnings Per Share

Basic and diluted weighted-average shares outstanding are as follows:

	Six Months Ended		Three Months Ended
(In thousands)	June 30, 2018	July 1, 2017	June 30, 2018	July 1, 2017
Weighted Average Shares - Basic	28,085	29,007	28,098	28,911
Net Effect of Dilutive Stock Options	670	1,128	704	1,178
Weighted Average Shares - Diluted	28,755	30,135	28,802	30,089

Stock options with exercise prices greater than the average market price of the underlying common shares are excluded from the computation of diluted earnings per share because they are out-of-the-money and the effect of their inclusion would be anti-dilutive. The number of common shares covered by out-of-the-money stock options was approximately 139,000 shares as of June 30, 2018.

12) Accumulated Other Comprehensive Loss and Other Comprehensive Income

The components of accumulated other comprehensive loss are as follows:

(In thousands)	June 30, 2018			December 31, 2017
Foreign Currency Translation Adjustments	$	(6,037	)	$	(4,465	)
Retirement Liability Adjustment – Before Tax	(12,443		)	(12,988		)
Tax Benefit of Retirement Liability Adjustment	3,986			4,101
Adoption of ASU 2018-02	(1,373		)	—
Retirement Liability Adjustment – After Tax	(9,830		)	(8,887		)
Accumulated Other Comprehensive Loss	$	(15,867	)	$	(13,352	)

The components of other comprehensive (loss) income are as follows:

	Six Months Ended						Three Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Foreign Currency Translation Adjustments	$	(1,572	)	$	2,491		$	(1,805	)	$	2,096
Retirement Liability Adjustments:
Reclassifications to General and Administrative Expense:
Amortization of Prior Service Cost	202			202			101			102
Amortization of Net Actuarial Losses	343			201			172			99
Tax Benefit	(115		)	(141		)	(58		)	(70		)
Retirement Liability Adjustment	430			262			215			131
Other Comprehensive (Loss) Income	$	(1,142	)	$	2,753		$	(1,590	)	$	2,227

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13) Supplemental Retirement Plan and Related Post Retirement Benefits

The Company has two non-qualified supplemental retirement defined benefit plans (“SERP” and “SERP II”) for certain executive officers. The following table sets forth information regarding the net periodic pension cost for the plans.

	Six Months Ended				Three Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Service Cost	$	100	$	92	$	50	$	46
Interest Cost	450		448		225		224
Amortization of Prior Service Cost	194		194		97		97
Amortization of Net Actuarial Losses	314		186		157		93
Net Periodic Cost	$	1,058	$	920	$	529	$	460

Participants in the SERP are entitled to paid medical, dental and long-term care insurance benefits upon retirement under the plan. The following table sets forth information regarding the net periodic cost recognized for those benefits:

	Six Months Ended				Three Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Service Cost	$	8	$	4	$	4	$	2
Interest Cost	23		20		12		10
Amortization of Prior Service Cost	8		8		4		5
Amortization of Net Actuarial Losses	29		15		15		6
Net Periodic Cost	$	68	$	47	$	35	$	23

14) Sales to Major Customers

The Company has a significant concentration of business with two major customers, each in excess of 10% of consolidated sales. The loss of either of these customers would significantly, negatively impact our sales and earnings.

Sales to these two customers represented 16% and 15% of consolidated sales for the six months ended and 12% and 14% for the three months ended June 30, 2018. Sales to these customers were in the Aerospace segment. Accounts receivable from these customers at June 30, 2018 was approximately $31.5 million. Sales to these two customers represented 20% and 18% of consolidated sales for the six months and 16% and 18% for the three months ended July 1, 2017.

15) Legal Proceedings

The Company is subject to various legal proceedings, claims, and litigation arising in the ordinary course of business. While the outcome of these matters is currently not determinable, we do not expect these matters will have a material adverse effect on our business, financial position, results of operations, or cash flows. However, the results of these matters cannot be predicted with certainty. Should the Company fail to prevail in any legal matter or should several legal matters be resolved against the Company in the same reporting period, then the financial results of that particular reporting period could be materially adversely affected.

On December 29, 2010, Lufthansa Technik AG (“Lufthansa”) filed a Statement of Claim in the Regional State Court of Mannheim, Germany. Lufthansa’s claim asserts that our subsidiary, AES, sold, marketed, and brought into use in Germany a power supply system that infringes upon a German patent held by Lufthansa. Lufthansa sought an order requiring AES to stop selling and marketing the allegedly infringing power supply system, a recall of allegedly infringing products sold to commercial customers in Germany since November 26, 2003, and compensation for damages related to direct sales of the allegedly infringing power supply system in Germany (referred to as “direct sales”). The claim does not specify an estimate of damages and a related damages claim is being pursued by Lufthansa in separate court proceedings in an action filed in July 2017, as further discussed below.

In February 2015, the Regional State Court of Mannheim, Germany rendered its decision that the patent was infringed. The judgment does not require AES to recall products that are already installed in aircraft or have been sold to other end users. On

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July 15, 2015, Lufthansa advised AES of their intention to enforce the accounting provisions of the decision, which required AES to provide certain financial information regarding direct sales of the infringing product in Germany to enable Lufthansa to make an estimate of requested damages. Additionally, if Lufthansa provides the required bank guarantee specified in the decision, the Company may be required to offer a recall of products that are in the distribution channels in Germany. No such bank guarantee has been issued to date. As of June 30, 2018, there are no products subject to the order in the distribution channels in Germany.

The Company appealed to the Higher Regional Court of Karlsruhe. On November 15, 2016, the Court issued its ruling and upheld the lower court’s decision. The Company submitted a petition to grant AES leave for appeal to the German Federal Supreme Court. On April 18, 2018, the German Federal Supreme Court granted Astronics’ petition in part, namely with respect to the part concerning the amount of damages. We estimate that the German Federal Supreme Court will provide its ruling on this issue in late 2018 or in early 2019.

In July 2017, Lufthansa filed an action in the Regional State Court of Mannheim for payment of damages caused by the alleged patent infringement of AES, related to direct sales of the allegedly infringing product in Germany (associated with the original December 2010 action discussed above). In this action, which was served on AES on April 11, 2018, Lufthansa claims payment of approximately $6.2 million plus interest. According to AES's assessment, this claim is significantly higher than justified. We estimate AES’s potential exposure to be approximately $1 million to $3 million, and have recorded a reserve of $1 million associated with this matter, which is management's best estimate of the probable exposure. Such amount is recorded within Other Accrued Expenses and Selling, General and Administrative Expenses in the accompanying financial statements as of and for the six month period ended June 30, 2018. An oral hearing has been scheduled on November 16, 2018. A first instance decision is in this matter is expected in early 2019.

On December 29, 2017, Lufthansa filed another infringement action against AES in the Regional State Court of Mannheim claiming that sales by AES to its international customers have infringed Lufthansa's patent if AES's customers later shipped the products to Germany (referred to as "indirect sales"). This action, therefore, addresses sales other than those covered by the action filed on December 29, 2010, discussed above. In this action, served on April 11, 2018, Lufthansa seeks an injunction, an order obliging AES to provide information and accounting and a finding that AES owes damages for the attacked indirect sales. AES will vigorously defend against the action. No amount of claimed damages has been specified by Lufthansa and such amount is not quantifiable at this time. An oral hearing in this matter has been scheduled on March 22, 2019. A first instance decision is in this matter is expected in mid 2019. As loss exposure is neither probable nor estimable at this time, the Company has not recorded any liability with respect to this litigation as of June 30, 2018.

In December 2017, Lufthansa filed patent infringement cases in the United Kingdom and in France against AES. The Lufthansa patent expired in May 2018. In those cases, Lufthansa accuses AES of having manufactured, used, sold and offered for sale a power supply system, and offered and supplied parts for a power supply system, that infringed upon a Lufthansa patent in those respective countries. As loss exposure is neither probable nor estimable at this time, the Company has not recorded any liability with respect to these matters as of June 30, 2018.

On November 26, 2014, Lufthansa filed a complaint in the United States District for the Western District of Washington. Lufthansa’s complaint in that action alleges that AES manufactures, uses, sells and offers for sale a power supply system that infringes upon a U.S. patent held by Lufthansa. The patent at issue in the U.S. action is based on technology similar to that involved in the German action. On April 25, 2016, the Court issued its ruling on claim construction, holding that the sole independent claim in the patent is indefinite, rendering all claims in the patent indefinite. Based on this ruling, AES filed a motion for summary judgment on the grounds that the Court’s ruling that the patent is indefinite renders the patent invalid and unenforceable. On July 20, 2016, the U.S. District Court granted the motion for summary judgment and issued an order dismissing all claims against AES with prejudice.

Lufthansa appealed the District Court's decision to the United States Court of Appeals for the Federal Circuit. On October 19, 2017, the Federal Circuit affirmed the district court’s decision, holding that the sole independent claim of the patent is indefinite, rending all claims on the patent indefinite. Lufthansa did not file a petition for en banc rehearing or petition the U.S. Supreme Court for a writ of certiorari. Therefore, there is no longer a risk of exposure from that lawsuit.

16) Segment Information

Below are the sales and operating profit by segment for the six months ended June 30, 2018 and July 1, 2017 and a reconciliation of segment operating profit to income before income taxes. Operating profit is net sales less cost of products sold

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and other operating expenses excluding interest and corporate expenses. Cost of products sold and other operating expenses are directly identifiable to the respective segment.

	Six Months Ended						Three Months Ended
(Dollars in thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Sales
Aerospace	$	330,857		$	266,374		$	166,257		$	129,547
Less Intersegment Sales	(53		)	—			(53		)	—
Total Aerospace Sales	330,804			266,374			166,204			129,547
Test Systems	56,861			37,136			$	42,402		$	21,567
Total Consolidated Sales	$	387,665		$	303,510		$	208,606		$	151,114
Operating Profit and Margins
Aerospace	$	31,315		$	33,738		$	18,200		$	13,984
	9.5		%	12.7		%	11.0		%	10.8		%
Test Systems	4,318			1,750			6,247			1,432
	7.6		%	4.7		%	14.7		%	6.6		%
Total Operating Profit	35,633			35,488			24,447			15,416
	9.2		%	11.7		%	11.7		%	10.2		%
Deductions from Operating Profit
Interest Expense, Net of Interest Income	4,815			2,313			2,484			1,180
Corporate Expenses and Other	9,710			7,115			4,781			3,667
Income Before Income Taxes	$	21,108		$	26,060		$	17,182		$	10,569

Total Assets:

(In thousands)	June 30, 2018		December 31, 2017
Aerospace	$	632,365	$	621,047
Test Systems	110,903		90,859
Corporate	21,155		24,050
Total Assets	$	764,423	$	735,956

17) Fair Value

A fair value measurement assumes that the transaction to sell an asset or transfer a liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. Fair value is based upon an exit price model. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and involves consideration of factors specific to the asset or liability.

The Company follows a valuation hierarchy for disclosure of the inputs to valuation used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows:

Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities.

Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.

Level 3 inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value.

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On a Recurring Basis:

A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. There were no financial assets or liabilities carried at fair value measured on a recurring basis at December 31, 2017 or June 30, 2018.

On a Non-recurring Basis:

The Company estimates the fair value of reporting units, utilizing unobservable Level 3 inputs. Level 3 inputs require significant management judgment due to the absence of quoted market prices or observable inputs for assets of a similar nature. The Company utilizes a discounted cash flow analysis to estimate the fair value of reporting units utilizing unobservable inputs. The fair value measurement of the reporting unit under the step-one and step-two analysis of the quantitative goodwill impairment test are classified as Level 3 inputs.

Intangible assets that are amortized are evaluated for recoverability whenever adverse effects or changes in circumstances indicate that the carrying value may not be recoverable. The recoverability test consists of comparing the undiscounted projected cash flows with the carrying amount. Should the carrying amount exceed undiscounted projected cash flows, an impairment loss would be recognized to the extent the carrying amount exceeds fair value. For the Company’s indefinite-lived intangible asset, the impairment test consists of comparing the fair value, determined using the relief from royalty method, with its carrying amount. An impairment loss would be recognized for the carrying amount in excess of its fair value.

Due to their short-term nature, the carrying value of cash and equivalents, accounts receivable, accounts payable, and notes payable approximate fair value. The carrying value of the Company’s variable rate long-term debt instruments also approximates fair value due to the variable rate feature of these instruments. As of June 30, 2018, the Company concluded that no indicators of impairment relating to intangible assets or goodwill existed and an interim test was not performed.

18) Acquisitions

Astronics Custom Control Concepts, Inc.

On April 3, 2017, Astronics Custom Control Concepts Inc., a wholly owned subsidiary of the Company, acquired substantially all the assets and certain liabilities of Custom Control Concepts LLC (“CCC”), located in Kent, Washington. CCC is a provider of cabin management and in-flight entertainment systems for a range of aircraft. The total consideration for the transaction was approximately $10.2 million, net of $0.5 million in cash acquired. All of the goodwill and purchased intangible assets are expected to be deductible for tax purposes over 15 years. The purchase price allocation for this acquisition has been finalized. CCC is included in our Aerospace segment.

Astronics Connectivity Systems and Certifications Corp.

On December 1, 2017, Astronics acquired substantially all of the assets of Telefonix Inc. and a related company, Product Development Technologies, LLC and its subsidiaries, to become Astronics Connectivity Systems and Certifications Corp. ("CSC"), primarily located in Waukegan and Lake Zurich, Illinois. CSC designs and manufactures advanced in-flight entertainment and connectivity equipment, and provides industry-leading design consultancy services for the global aerospace industry. The total consideration for the transaction was approximately $103.8 million, net of $0.2 million in cash acquired. All of the goodwill and purchased intangible assets are expected to be deductible for tax purposes over 15 years. CSC is included in our Aerospace Segment. The purchase price allocation for this acquisition has not yet been finalized.

Refer to the Company's annual report on form 10-K for the fiscal year ended December 31, 2017 for further details on the assets acquired and liabilities assumed.  There have been no significant changes to the preliminary allocation of purchase price in the three months ended June 30, 2018.

The following summary, prepared on a pro forma basis, combines the consolidated results of operations of the Company with those of CSC as if the acquisition took place on January 1, 2017. The pro forma consolidated results include the impact of certain adjustments, including increased interest expense on acquisition debt, amortization of purchased intangible assets and income taxes.

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Unaudited	Six Months Ended				Three Months Ended
(in thousands, except earnings per share)	July 1, 2017 as reported		July 1, 2017 Pro Forma		July 1, 2017 as reported		July 1, 2017 Pro Forma
Sales	$	303,510	$	333,169	$	151,114	$	168,565
Net income	$	19,272	$	18,232	$	7,685	$	7,880
Basic earnings per share	$	0.66	$	0.63	$	0.27	$	0.27
Diluted earnings per share	$	0.64	$	0.61	$	0.26	$	0.26

The pro forma results are not necessarily indicative of what actually would have occurred if the acquisition had been in effect for the three and six months ended July 1, 2017. In addition, they are not intended to be a projection of future results.

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

(The following should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in the Company’s Form 10-K for the year ended December 31, 2017.)

OVERVIEW

Astronics Corporation (“Astronics” or the “Company”) is a leading provider of advanced technologies to the global aerospace, defense, electronics and semiconductor industries. Our products and services include advanced, high-performance electrical power generation, distribution and motion systems, lighting and safety systems, avionics products, aircraft structures, systems certification, aircraft structures, and automated test systems.

Our Aerospace segment designs and manufactures products for the global aerospace industry. Product lines include lighting and safety systems, electrical power generation, distribution and motion systems, aircraft structures, avionics products, systems certification, connectivity and other products. Our Aerospace customers are the airframe manufacturers ("OEM") that build aircraft for the commercial, military and general aviation markets, suppliers to those OEM’s, aircraft operators such as airlines and branches of the U.S. Department of Defense as well as the Federal Aviation Administration and airport operators. Our Test Systems segment designs, develops, manufactures and maintains automated test systems that support the semiconductor, aerospace, communications and weapons test systems as well as training and simulation devices for both commercial and military applications. In the Test Systems segment, Astronics’ products are sold to a global customer base including OEM's and prime government contractors for both electronics and military products.

Our strategy is to increase our value by developing technologies and capabilities either internally or through acquisition, and using those capabilities to provide innovative solutions to the aerospace and defense, semiconductor and other markets where our technology can be beneficial.

Important factors affecting our growth and profitability are the rate at which new aircraft are produced, government funding of military programs, our ability to have our products designed into new aircraft and the rates at which aircraft owners, including commercial airlines, refurbish or install upgrades to their aircraft. New aircraft build rates and aircraft owners spending on upgrades and refurbishments is cyclical and dependent on the strength of the global economy. Once designed into a new aircraft, the spare parts business is frequently retained by the Company. Future growth and profitability of the Test Systems business is dependent on developing and procuring new and follow-on business in commercial electronics and semiconductor markets as well as with the military. The nature of our Test Systems business is such that it pursues large multi-year projects. There can be significant periods of time between orders in this business which may result in large fluctuations of sales and profit levels and backlog from period to period.

ACQUISITIONS

Astronics Custom Control Concepts, Inc.

On April 3, 2017, Astronics Custom Control Concepts Inc., a wholly owned subsidiary of the Company, acquired substantially all the assets and certain liabilities of Custom Control Concepts LLC (“CCC”), located in Kent, Washington. CCC is a provider of cabin management and in-flight entertainment systems for a range of aircraft. The total consideration for the transaction was approximately $10.2 million, net of $0.5 million in cash acquired. The purchase price allocation for this acquisition has been finalized. CCC is included in our Aerospace segment.

Astronics Connectivity Systems and Certifications Corp.

On December 1, 2017, Astronics acquired substantially all of the assets of Telefonix Inc. and a related company, Product Development Technologies, LLC and its subsidiaries, to become Astronics Connectivity Systems and Certifications Corp. ("CSC"), primarily located in Waukegan and Lake Zurich, Illinois. CSC designs and manufactures advanced in-flight entertainment and connectivity equipment, and provides industry leading design consultancy services for the global aerospace industry. Under the terms of the Agreement, the total consideration for the transaction was approximately $103.8 million, net of $0.2 million in cash acquired. The purchase price allocation for this acquisition has not been finalized. CSC is included in our Aerospace segment.

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CONSOLIDATED RESULTS OF OPERATIONS AND OUTLOOK

	Six Months Ended						Three Months Ended
(Dollars in thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Sales	$	387,665		$	303,510		$	208,606		$	151,114
Gross Profit (sales less cost of products sold)	$	86,704		$	72,467		$	49,572		$	34,150
Gross Margin	22.4		%	23.9		%	23.8		%	22.6		%
Selling, General and Administrative Expenses	$	59,943		$	43,474		$	29,443		$	22,091
SG&A Expenses as a Percentage of Sales	15.5		%	14.3		%	14.1		%	14.6		%
Interest Expense, Net of Interest Income	$	4,815		$	2,313		$	2,484		$	1,180
Effective Tax Rate	18.0		%	26.0		%	18.4		%	27.3		%
Net Income	$	17,319		$	19,272		$	14,025		$	7,685

A discussion by segment can be found at “Segment Results of Operations and Outlook” in this MD&A.

CONSOLIDATED SECOND QUARTER RESULTS

Consolidated sales were up 38% or $57.5 million from the same period last year, including $26.9 million in sales from the Telefonix PDT acquisition. Organic revenue was $181.7 million, up 20% compared with the same prior year period, driven by 97% growth in the Test Systems segment and 7.5% organic growth in the Aerospace segment.

Consolidated cost of products sold in the second quarter of 2018 increased $42.0 million to $159.0 million compared with $117.0 million in the second quarter of 2017. The increase in costs of products sold was a result of higher organic sales, as well as the acquired businesses. Consolidated cost of products sold was also impacted by a program charge of $1.5 million recognized due to the revision of estimated costs to complete a long-term contract assumed with the acquisition of the CCC business.

Consolidated Engineering and Development ("E&D") costs were $28.9 million. Organic E&D costs were $25.3 million in the quarter, compared with $23.0 million in last year’s second quarter. As a percent of organic sales, organic E&D costs were 13.9% and 15.2% in the second quarters of 2018 and 2017, respectively.

Selling, general and administrative (“SG&A”) expenses were up $7.4 million to $29.4 million, or 14.1% of sales, in the second quarter of 2018 compared with $22.1 million, or 14.6% of sales, in the same period last year. Telefonix contributed $5.1 million to SG&A, including $2.2 million of intangible asset amortization expense. Consolidated intangible asset amortization expense was $4.9 million in the second quarter of 2018 compared with $2.7 million in the prior year.

The effective tax rate for the quarter was 18.4%, compared with 27.3% in the second quarter of 2017. The 2018second quarter tax rate was favorably impacted by the decrease in the Federal statutory tax rate partially offset by the elimination of the domestic production activities deduction resulting from the Tax Cuts and Jobs Act.

Net income was $14.0 million, or $0.49 per diluted share, compared with $7.7 million, or $0.26 per diluted share in the prior year.

Bookings were up 18% to $186.9 million, for a book-to-bill ratio of 0.90:1. Backlog at the end of the quarter was $376.9 million. Approximately 82% of backlog is expected to ship in 2018.

CONSOLIDATED YEAR-TO-DATE RESULTS

Consolidated sales for the first six months of 2018 increased by $84.2 million, or 27.7%, including $52.0 million in acquired revenue. Aerospace segment sales were up$64.4 million to $330.8 million. Organic Aerospace sales were up 4.7%. Test Systems segment sales were up$19.7 million, or 53.1% to $56.9 million.

Consolidated cost of products sold were $301.0 million in the first six months of 2018 compared with $231.0 million in the first six months of 2017. The increase in consolidated cost of products sold was driven by higher organic sales as well as the acquired business. Expense related to the fair value step-up of acquired inventory was $1.3 million and was fully expensed in the first quarter. Consolidated cost of products sold was negatively impacted by the lower margin profile of CCC due to low volume and a $3.6 million program charge due to the revision of estimated costs associated with the long-term contract, as previously discussed. Organic E&D costs were 14.8% of organic sales, or $49.6 million, compared with $45.8 million, or

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15.1% of sales, in the prior year’s first six months. Acquisitions contributed E&D costs of $8.1 million in the first six months of 2018.

SG&A expenses were $59.9 million, or 15.5% of sales, in the first six months of 2018 compared with $43.5 million, or 14.3% of sales, in the same period last year. Acquisitions contributed $12.3 million to SG&A, including $5.5 million of intangible asset amortization expense. Also contributing to higher SG&A was a $1.0 million litigation reserve recorded during the first six months of 2018 for an ongoing matter. Corporate expenses increased by $2.4 million due to increased headcount, legal and accounting costs.

The effective tax rate for the first six months of 2018 was 18.0%, compared with 26.0% in the first six months of 2017. The tax rate in the first six months of 2018 was favorably impacted by the decrease in the Federal statutory rate partially offset by the elimination of the domestic production activities deduction resulting from the Tax Cuts and Jobs Act, as well as the change in foreign tax rates in the first six months of 2017.

Net income for the first half of 2018 totaled $17.3 million, or $0.60 per diluted share.

CONSOLIDATED OUTLOOK

Consolidated sales in 2018 are forecasted to be in the range of $765 million to $815 million, with $650 million to $680 million expected from the Aerospace segment and $115 million to $135 million from the Test segment.

Consolidated backlog at June 30, 2018 was $376.9 million, compared with $393.7 million at December 31, 2017. Approximately $309.1 million is expected to ship in 2018.

The effective tax rate for 2018 is expected to be in the range of 18% to 21%.

Expectations for capital equipment spending in 2018 are unchanged from a range of $24 million to $28 million.

E&D costs for 2018 continue to be expected in the range of $110 million to $115 million.

SEGMENT RESULTS OF OPERATIONS AND OUTLOOK

Operating profit, as presented below, is sales less cost of products sold and other operating expenses, excluding interest expense and other corporate expenses. Cost of products sold and other operating expenses are directly identifiable to the respective segment. Operating profit is reconciled to earnings before income taxes in Note 16 of the Notes to Consolidated Condensed Financial Statements included in this report.

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AEROSPACE SEGMENT

	Six Months Ended						Three Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Sales	$	330,857		$	266,374		$	166,257		$	129,547
Less Intersegment Sales	(53		)	—			(53		)	—
Total Aerospace Sales	$	330,804		$	266,374		$	166,204		$	129,547
Operating Profit	$	31,315		$	33,738		$	18,200		$	13,984
Operating Margin	9.5		%	12.7		%	11.0		%	10.8		%
Aerospace Sales by Market
(In thousands)
Commercial Transport	$	265,847		$	208,079		$	132,797		$	98,355
Military	30,285			30,931			16,270			15,785
Business Jet	21,002			18,251			10,338			10,716
Other	13,670			9,113			6,799			4,691
	$	330,804		$	266,374		$	166,204		$	129,547
Aerospace Sales by Product Line
(In thousands)
Electrical Power & Motion	$	140,321		$	135,040		$	67,643		$	62,597
Lighting & Safety	85,763			85,316			44,121			42,646
Avionics	69,295			20,076			36,272			10,940
Systems Certification	9,655			4,952			4,872			2,793
Structures	12,100			11,877			6,497			5,880
Other	13,670			9,113			6,799			4,691
	$	330,804		$	266,374		$	166,204		$	129,547

(In thousands)	June 30, 2018		December 31, 2017
Total Assets	$	632,365	$	621,047
Backlog	$	298,643	$	298,604

AEROSPACE SECOND QUARTER RESULTS

Aerospace segment sales increased by $36.7 million, or 28.3%, when compared with the prior year’s second quarter, to $166.2 million. Organic sales increased $9.8 million, or 7.5%, while Telefonix PDT contributed $26.9 million in sales in the 2018 second quarter.

Avionics sales were up $25.3 million, due to the addition of Telefonix PDT, which contributed $23.9 million. Electrical Power & Motion increased by $5.0 million, or 8.1%, due to higher sales of in-seat power and seat motion products. System Certification sales increased by $2.1 million on higher project activity. Sales of other products were up $2.1 million, due primarily to the acquisition.

Aerospace operating profit for the second quarter of 2018 was $18.2 million, or 11.0% of sales, compared with $14.0 million, or 10.8% of sales, in the same period last year. Organic Aerospace E&D costs were $22.7 million compared with $21.0 million in the same period last year. The acquisition added $3.6 million in E&D costs.

Aerospace operating profit benefited from higher organic sales and the addition of Telefonix PDT. This was partially offset by a $1.5 million program charge related to the aforementioned CCC long-term contract. Intangible asset amortization expense for Telefonix PDT was $2.2 million in the second quarter.

Aerospace orders in the second quarter of 2018 were up 18% to $158.9 million compared with the prior year period. The book-to-bill ratio was 0.96:1 for the quarter. Backlog was $298.6 million at the end of the second quarter of 2018.

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AEROSPACE YEAR-TO-DATE RESULTS

Aerospace segment sales increased by $64.4 million, or 24.2%, to $330.8 million, when compared with the prior year’s first six months.

Avionics sales increased by $49.2 million, driven primarily by the addition of Telefonix PDT, which contributed $43.7 million in Avionics sales. Electrical Power & Motion sales increased$5.3 million, or 3.9%, and Systems Certifications sales increased$4.7 million, both for similar reasons as in the quarter. Sales of other products were up $4.6 million to $13.7 million, due primarily to the Telefonix PDT acquisition.

Aerospace operating profit was $31.3 million, or 9.5% of sales, compared with $33.7 million, or 12.7% of sales, in the same period last year. Aerospace operating profit in the first six months of 2018 was negatively impacted by purchase accounting expenses and a $1.0 million litigation reserve, which are expected to decrease or not recur through the remainder of 2018. As is typical during the first few quarters following an acquisition, non-cash costs were higher than what is expected over the long-term, as short-lived intangible assets are amortized and the fair value step-up costs relating to the acquired inventory is expensed. Intangible asset amortization expense for the acquisitions was $5.7 million in the first six months of 2018 and fair value inventory step-up expense of $1.3 million was recorded in the first quarter. Aerospace operating profit was also negatively impacted by the $3.6 million program charge related to the CCC long-term contract previously discussed.

Somewhat offsetting these costs were the operating leverage realized from higher organic sales. E&D costs for Aerospace were $52.2 million and $41.3 million in the first six months of 2018 and 2017, respectively. Acquisitions contributed $8.1 million in 2018 to Aerospace E&D expenses.

AEROSPACE OUTLOOK

We expect 2018 sales for our Aerospace segment to be in the range of $650 million to $680 million. The Aerospace segment’s backlog at the end of the second quarter of 2018 was $298.6 million with approximately $254.5 million expected to be shipped over the remaining part of 2018 and $285.8 million is expected to ship over the next 12 months.

TEST SYSTEMS SEGMENT

	Six Months Ended						Three Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Sales	$	56,861		$	37,136		$	42,402		$	21,567
Operating profit	$	4,318		$	1,750		$	6,247		$	1,432
Operating Margin	7.6		%	4.7		%	14.7		%	6.6		%
Test Systems Sales by Market
(In thousands)
Semiconductor	$	38,465		$	11,711		$	31,405		$	7,080
Aerospace & Defense	18,396			25,425			10,997			14,487
	$	56,861		$	37,136		$	42,402		$	21,567

(In thousands)	June 30, 2018		December 31, 2017
Total Assets	$	110,903	$	90,859
Backlog	$	78,293	$	95,086

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TEST SYSTEMS SECOND QUARTER RESULTS

Sales in the second quarter of 2018increased approximately $20.8 million to $42.4 million compared with the same period in 2017. A $24.3 million increase in sales to the Semiconductor market was offset by a $3.5 million decrease in sales to the Aerospace & Defense market when compared with the prior-year period.

The operating profit was $6.2 million, or 14.7% of sales, compared with $1.4 million, or 6.6% of sales, in last year’s second quarter. Higher margin was driven by the increase in volume and favorable sales mix compared with the same period last year. E&D costs were $2.6 million, up from $2.0 million in the second quarter of 2017.

Orders for the Test Systems segment in the quarter were $28.1 million, for a book-to-bill ratio of 0.66:1 for the quarter. Backlog was $78.3 million at the end of the second quarter of 2018.

TEST SYSTEMS YEAR-TO-DATE RESULTS

Sales in the first six months of 2018increased53.1% to $56.9 million compared with sales of $37.1 million for the same period in 2017. The growth was driven by a $26.8 million increase in sales to the Semiconductor market. This was somewhat offset by a decrease in Aerospace & Defense sales of $7.0 million.

Operating profit increased $2.6 million to $4.3 million, or 7.6% of sales, as a result of increased sales volume and improved product mix. E&D costs were $5.6 million in the first six months of 2018 compared with $4.5 million in the prior year period.

TEST SYSTEMS OUTLOOK

We expect sales for the Test Systems segment for 2018 to be in the range of $115 million to $135 million. The Test Systems segment’s backlog at the end of the second quarter of 2018 was $78.3 million, with approximately $54.6 million expected to be shipped over the remaining part of 2018 and approximately $65.3 million scheduled to ship over the next 12 months.

LIQUIDITY AND CAPITAL RESOURCES

Operating Activities:

Cash provided by operating activities totaled $8.1 million for the first six months of 2018, as compared with $4.5 million during the same period in 2017. Cash flow from operating activities increased compared with the same period of 2017 as lower net income was more than offset by higher non-cash depreciation and amortization expenses in the first six months of 2018 when compared with the first six months of 2017.

Investing Activities:

Cash used for investing activities was $8.5 million for the first six months of 2018 compared with $15.8 million used in the same period of 2017. The decrease was a result of business acquisitions in the prior year, offset by increased capital expenditures in the current year. The Company expects capital spending in 2018 to be in the range of $24 million to $28 million.

Financing Activities:

The primary financing activities in the first six months of 2018 related to net payments on our senior credit facility of $5.0 million and $0.5 million of costs incurred related to the execution of the Agreement in February 2018. The primary financing activities in the first six months of 2017 related to net borrowings on our senior credit facility to fund operations, the acquisition of CCC and purchases of treasury stock as part of the buyback program announced on February 24, 2016, under which the Board of Directors authorized the repurchase of up to $50 million of common stock.

The Company’s cash needs for working capital, debt service and capital equipment during the remainder of 2018 is expected to be met by cash flows from operations and cash balances and, if necessary, utilization of the revolving credit facility.

On February 24, 2016, the Company’s Board of Directors authorized the repurchase of up to $50 million of common stock (the “Buyback Program”). The Buyback Program allowed the Company to purchase shares of its common stock in accordance with applicable securities laws on the open market or through privately negotiated transactions. The Company has repurchased approximately 1,675,000 shares and has completed that program. On December 12, 2017, the Company’s Board of Directors authorized an additional repurchase of up to $50 million of common stock. No amounts have been repurchased under the new program as of June 30, 2018.

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The Company's Fourth Amended and Restated Credit Agreement (the “Original Facility”) provided for a $350 million revolving credit line with the option to increase the line by up to $150 million. The maturity date of the original facility was January 13, 2021. On February 16, 2018, the Company modified and extended the Original Facility by entering into the Fifth Amended and Restated Credit Agreement (the “Agreement”), which provides for a $500 million revolving credit line with the option to increase the line by up to $150 million. A new lender was added to the facility as well. The outstanding balance in the Original Facility were rolled into the Agreement on the date of closing. The maturity date of the loans under the Agreement is February 16, 2023. At June 30, 2018, there was $257.0 million outstanding on the revolving credit facility and there remains $241.9 million available, net of outstanding letters of credit. The credit facility allocates up to $20 million of the $500 million revolving credit line for the issuance of letters of credit, including certain existing letters of credit. At June 30, 2018, outstanding letters of credit totaled $1.1 million.

The maximum permitted leverage ratio of funded debt to Adjusted EBITDA (as defined in the Agreement) is 3.75 to 1, increasing to 4.50 to 1 for up to four fiscal quarters following the closing of an acquisition permitted under the Agreement, subject to limitations. The Company’s leverage ratio was 2.80 to 1 at June 30, 2018. The Company will pay interest on the unpaid principal amount of the facility at a rate equal to one-, three- or six-month LIBOR plus between 1.00% and 1.50% based upon the Company’s leverage ratio. The Company will also pay a commitment fee to the lenders in an amount equal to between 0.10% and 0.20% on the undrawn portion of the credit facility, based upon the Company’s leverage ratio.

The Company’s obligations under the Credit Agreement as amended are jointly and severally guaranteed by each domestic subsidiary of the Company other than a non-material subsidiary. The obligations are secured by a first priority lien on substantially all of the Company’s and the guarantors’ assets.

In the event of voluntary or involuntary bankruptcy of the Company or any subsidiary, all unpaid principal and other amounts owing under the Agreement automatically become due and payable. Other events of default, such as failure to make payments as they become due and breach of financial and other covenants, change of control, judgments over a certain amount, and cross default under other agreements give the Agent the option to declare all such amounts immediately due and payable.

BACKLOG

The Company’s backlog at June 30, 2018 was $376.9 million compared with $393.7 million at December 31, 2017 and $265.6 million at July 1, 2017.

CONTRACTUAL OBLIGATIONS AND COMMITMENTS

The following table represents contractual obligations as of June 30, 2018:

	Payments Due by Period
(In thousands)	Total		2018		2019-2020		2021-2022		After 2022
Long-term Debt	$	265,345	$	1,354	$	4,012	$	2,979	$	257,000
Purchase Obligations	152,970		135,067		17,748		—		155
Interest on Long-term Debt	45,676		9,159		18,451		17,728		338
Supplemental Retirement Plan and Post Retirement Obligations	13,224		209		417		406		12,192
Operating Leases	18,341		2,301		6,995		4,545		4,500
Other Long-term Liabilities	178		119		13		16		30
Total Contractual Obligations	$	495,734	$	148,209	$	47,636	$	25,674	$	274,215

Notes to Contractual Obligations Table

Purchase Obligations — Purchase obligations are comprised of the Company’s commitments for goods and services in the normal course of business.

Long-Term Debt — See Part 1 Financial Information, Item 1 Financial Statements, Note 7, Long-Term Debt and Notes Payable included in this report.

Operating Leases — Operating lease obligations are primarily related to the Company's facility leases.

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MARKET RISK

The Company believes that there have been no material changes in the current year regarding the market risk information for its exposure to interest rate fluctuations. Although the majority of our sales, expenses and cash flows are transacted in U.S. dollars, we have exposure to changes in foreign currency exchange rates related to the Euro and the Canadian dollar. The Company believes that the impact of changes in foreign currency exchange rates in 2018 have not been significant.

CRITICAL ACCOUNTING POLICIES

Refer to Note 2 of the Notes to Consolidated Condensed Financial Statements included in this report for the Company’s critical accounting policies with respect to revenue recognition.  For a complete discussion of the Company’s other critical accounting policies, refer to the Company’s annual report on Form 10-K for the year ended December 31, 2017.

RECENT ACCOUNTING PRONOUNCEMENTS

Refer to Note 1 of the Notes to Consolidated Condensed Financial Statements included in this report.

FORWARD-LOOKING STATEMENTS

Information included in this report that does not consist of historical facts, including statements accompanied by or containing words such as “may,” “will,” “should,” “believes,” “expects,” “expected,” “intends,” “plans,” “projects,” “approximate,” “estimates,” “predicts,” “potential,” “outlook,” “forecast,” “anticipates,” “presume” and “assume,” are forward-looking statements. Such forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements are not guarantees of future performance and are subject to several factors, risks and uncertainties, the impact or occurrence of which could cause actual results to differ materially from the expected results described in the forward-looking statements. Certain of these factors, risks and uncertainties are discussed in the sections of this report entitled “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” New factors, risks and uncertainties may emerge from time to time that may affect the forward-looking statements made herein. Given these factors, risks and uncertainties, investors should not place undue reliance on forward-looking statements as predictive of future results. We disclaim any obligation to update the forward-looking statements made in this report.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

See Market Risk in Item 2, above.

Item 4. Controls and Procedures

a) Evaluation of Disclosure Controls and Procedures

The Company’s management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the Company’s disclosure controls and procedures as of June 30, 2018. Based on that evaluation, the Company’s Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of June 30, 2018.

b) Changes in Internal Control over Financial Reporting

There have been no changes in our internal control over financial reporting during the most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION

Item 1. Legal Proceedings

The Company is subject to various legal proceedings, claims, and litigation arising in the ordinary course of business. While the outcome of these matters is currently not determinable, we do not expect these matters will have a material adverse effect on our business, financial position, results of operations, or cash flows. However, the results of these matters cannot be predicted with certainty. Should the Company fail to prevail in any legal matter or should several legal matters be resolved against the Company in the same reporting period, then the financial results of that particular reporting period could be materially adversely affected.

On December 29, 2010, Lufthansa Technik AG (“Lufthansa”) filed a Statement of Claim in the Regional State Court of Mannheim, Germany. Lufthansa’s claim asserts that our subsidiary, AES, sold, marketed, and brought into use in Germany a power supply system that infringes upon a German patent held by Lufthansa. Lufthansa sought an order requiring AES to stop selling and marketing the allegedly infringing power supply system, a recall of allegedly infringing products sold to commercial customers in Germany since November 26, 2003, and compensation for damages related to direct sales of the allegedly infringing power supply system in Germany (referred to as “direct sales”). The claim does not specify an estimate of damages and a related damages claim is being pursued by Lufthansa in separate court proceedings in an action filed in July 2017, as further discussed below.

In February 2015, the Regional State Court of Mannheim, Germany rendered its decision that the patent was infringed. The judgment does not require AES to recall products that are already installed in aircraft or have been sold to other end users. On July 15, 2015, Lufthansa advised AES of their intention to enforce the accounting provisions of the decision, which required AES to provide certain financial information regarding direct sales of the infringing product in Germany to enable Lufthansa to make an estimate of requested damages. Additionally, if Lufthansa provides the required bank guarantee specified in the decision, the Company may be required to offer a recall of products that are in the distribution channels in Germany. No such bank guarantee has been issued to date. As of June 30, 2018, there are no products subject to the order in the distribution channels in Germany.

The Company appealed to the Higher Regional Court of Karlsruhe. On November 15, 2016, the Court issued its ruling and upheld the lower court’s decision. The Company submitted a petition to grant AES leave for appeal to the German Federal Supreme Court. On April 18, 2018, the German Federal Supreme Court granted Astronics’ petition in part, namely with respect to the part concerning the amount of damages. We estimate that the German Federal Supreme Court will provide its ruling on this issue in late 2018 or in early 2019.

In July 2017, Lufthansa filed an action in the Regional State Court of Mannheim for payment of damages caused by the alleged patent infringement of AES, related to direct sales of the allegedly infringing product in Germany (associated with the original December 2010 action discussed above). In this action, which was served on AES on April 11, 2018, Lufthansa claims payment of approximately $6.2 million plus interest. According to AES's assessment, this claim is significantly higher than justified. We estimate AES’s potential exposure to be approximately $1 million to $3 million, and have recorded a reserve of $1 million associated with this matter, which is management's best estimate of the probable exposure. Such amount is recorded within Other Accrued Expenses and Selling, General and Administrative Expenses in the accompanying financial statements as of and for the six month period ended June 30, 2018. An oral hearing has been scheduled on November 16, 2018. A first instance decision is in this matter is expected in early 2019.

On December 29, 2017, Lufthansa filed another infringement action against AES in the Regional State Court of Mannheim claiming that sales by AES to its international customers have infringed Lufthansa's patent if AES's customers later shipped the products to Germany (referred to as "indirect sales"). This action, therefore, addresses sales other than those covered by the action filed on December 29, 2010, discussed above. In this action, served on April 11, 2018, Lufthansa seeks an injunction, an order obliging AES to provide information and accounting and a finding that AES owes damages for the attacked indirect sales. AES will vigorously defend against the action. No amount of claimed damages has been specified by Lufthansa and such amount is not quantifiable at this time. An oral hearing in this matter has been scheduled on March 22, 2019. A first instance decision is in this matter is expected in mid 2019. As loss exposure is neither probable nor estimable at this time, the Company has not recorded any liability with respect to this litigation as of June 30, 2018.

In December 2017, Lufthansa filed patent infringement cases in the United Kingdom and in France against AES. The Lufthansa patent expired in May 2018. In those cases, Lufthansa accuses AES of having manufactured, used, sold and offered for sale a power supply system, and offered and supplied parts for a power supply system, that infringed upon a Lufthansa patent in those

31

respective countries. As loss exposure is neither probable nor estimable at this time, the Company has not recorded any liability with respect to these matters as of June 30, 2018.

On November 26, 2014, Lufthansa filed a complaint in the United States District for the Western District of Washington. Lufthansa’s complaint in that action alleges that AES manufactures, uses, sells and offers for sale a power supply system that infringes upon a U.S. patent held by Lufthansa. The patent at issue in the U.S. action is based on technology similar to that involved in the German action. On April 25, 2016, the Court issued its ruling on claim construction, holding that the sole independent claim in the patent is indefinite, rendering all claims in the patent indefinite. Based on this ruling, AES filed a motion for summary judgment on the grounds that the Court’s ruling that the patent is indefinite renders the patent invalid and unenforceable. On July 20, 2016, the U.S. District Court granted the motion for summary judgment and issued an order dismissing all claims against AES with prejudice.

Lufthansa appealed the District Court's decision to the United States Court of Appeals for the Federal Circuit. On October 19, 2017, the Federal Circuit affirmed the district court’s decision, holding that the sole independent claim of the patent is indefinite, rending all claims on the patent indefinite. Lufthansa did not file a petition for en banc rehearing or petition the U.S. Supreme Court for a writ of certiorari. Therefore, there is no longer a risk of exposure from that lawsuit.

Item 1a. Risk Factors

In addition to other information set forth in this report, you should carefully consider the factors discussed in Part 1, Item 1A. “Risk Factors,” in our Annual Report on Form 10-K for the year ended December 31, 2017, which could materially affect our business, financial condition or results of operations. The risks described in our Annual Report on Form 10-K are not the only risks facing us. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or results of operations.

Item 2. Unregistered sales of equity securities and use of proceeds

(c) The following table summarizes our purchases of our common stock for the quarter ended June 30, 2018.

Period	(a) Total Number of Shares Purchased	(b) Average Price Paid Per Share	(c) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	(d) Maximum Dollar Value of Shares that may yet be Purchased Under the Program (2)
April 1, 2018 - April 28, 2018	—	—	—	$50,000,000
April 29, 2018 - May 26, 2018 (1)	2,163	$40.97	—	$50,000,000
May 27, 2018 - June 30, 2018	—	—	—	$50,000,000

In connection with the exercise of stock options, we accept, from time to time, delivery of shares to pay the exercise price of stock options.

(1) On May 16, 2018, we accepted delivery of 2,163 shares at $40.97 in connection with the exercise of stock options.

(2) On December 12, 2017, the Company’s Board of Directors authorized an additional repurchase of up to $50 million in connection with the Buyback Program.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

None.

Item 5. Other Information

None.

32

Item 6. Exhibits

Exhibit 31.1	Section 302 Certification - Chief Executive Officer
Exhibit 31.2	Section 302 Certification - Chief Financial Officer
Exhibit 32.	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
Exhibit 101.1*	Instance Document
Exhibit 101.2*	Schema Document
Exhibit 101.3*	Calculation Linkbase Document
Exhibit 101.4*	Labels Linkbase Document
Exhibit 101.5*	Presentation Linkbase Document
Exhibit 101.6*	Definition Linkbase Document

* Submitted electronically herewith.

33

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.

		ASTRONICS CORPORATION
		(Registrant)
Date:	August 8, 2018	By:	/s/ David C. Burney
			David C. Burney Executive Vice President and Chief Financial Officer (Principal Financial Officer)

34

EX-31.1

Exhibit 31.1

SECTION 302 CERTIFICATION

Certification of Chief Executive Officer pursuant to Exchange Act rule 13a-14(a) as adopted pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, Peter J. Gundermann, President and Chief Executive Officer, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Astronics Corporation;

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

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

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

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

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

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

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

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

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

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

Date: August 8, 2018

/s/ Peter J. Gundermann

Peter J. Gundermann

President and Chief Executive Officer

EX-31.2

Exhibit 31.2

SECTION 302 CERTIFICATION

Certification of Chief Financial Officer pursuant to Exchange Act Rule 13a-14(a) as adopted pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, David C. Burney, Chief Financial Officer, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Astronics Corporation;

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

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

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

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

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

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

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

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

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

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

Date: August 8, 2018

/s/ David C. Burney

David C. Burney

Chief Financial Officer

EX-32

Exhibit 32

Certification pursuant to

18 U.S.C. Section 1350,

as adopted pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officers of Astronics Corporation (the "Company") hereby certify that:

The Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2018 fully complies with the requirements of section 13(a) or 15(d) of the Securities and Exchange Act of 1934 and the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: August 8, 2018	/s/ Peter J. Gundermann
	Peter J. Gundermann
	Title:	Chief Executive Officer
Dated: August 8, 2018	/s/ David C. Burney
	David C. Burney
	Title:	Chief Financial Officer

This certification shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liability of that section. This certification shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent specifically incorporated by the Company into such filing.

XML

Document and Entity Information	6 Months Ended
	Jun. 30, 2018 shares
Document Information
Entity Registrant Name	ASTRONICS CORP
Trading Symbol	ATRO
Entity Central Index Key	0000008063
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Common Class Undefined
Document Information
Entity Common Stock, Shares Outstanding	21,543,627
Convertible Class B Stock
Document Information
Entity Common Stock, Shares Outstanding	6,557,871

XML

Consolidated Condensed Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 10,608	$ 17,914
Accounts Receivable, Net of Allowance for Doubtful Accounts	169,496	132,633
Inventories	159,479	150,196
Prepaid Expenses and Other Current Assets	13,912	14,586
Total Current Assets	353,495	315,329
Property, Plant and Equipment, Net of Accumulated Depreciation	124,696	125,830
Other Assets	18,451	15,659
Intangible Assets, Net of Accumulated Amortization	142,544	153,493
Goodwill	125,237	125,645
Total Assets	764,423	735,956
Current Liabilities:
Current Maturities of Long-term Debt	2,190	2,689
Accounts Payable	49,580	41,846
Accrued Expenses and Other Current Liabilities	38,590	38,749
Customer Advance Payments and Deferred Revenue	25,429	19,607
Total Current Liabilities	115,789	102,891
Long-term Debt	263,155	269,078
Other Liabilities	34,189	34,060
Total Liabilities	413,133	406,029
Shareholders’ Equity:
Common Stock	298	297
Accumulated Other Comprehensive Loss	(15,867)	(13,352)
Other Shareholders’ Equity	366,859	342,982
Total Shareholders’ Equity	351,290	329,927
Total Liabilities and Shareholders’ Equity	$ 764,423	$ 735,956

XML

Consolidated Condensed Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Income Statement [Abstract]
Revenues	$ 208,606	$ 151,114	$ 387,665	$ 303,510
Cost of Products Sold	159,034	116,964	300,961	231,043
Gross Profit	49,572	34,150	86,704	72,467
Selling, General and Administrative Expenses	29,443	22,091	59,943	43,474
Income from Operations	20,129	12,059	26,761	28,993
Other Expense, Net of Other Income	463	310	838	620
Interest Expense, Net of Interest Income	2,484	1,180	4,815	2,313
Income Before Income Taxes	17,182	10,569	21,108	26,060
Provision for Income Taxes	3,157	2,884	3,789	6,788
Net Income	$ 14,025	$ 7,685	$ 17,319	$ 19,272
Earnings Per Share:
Basic (in usd per share)	$ 0.50	$ 0.27	$ 0.62	$ 0.66
Diluted (in usd per share)	$ 0.49	$ 0.26	$ 0.60	$ 0.64

XML

Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Statement of Comprehensive Income [Abstract]
Net Income	$ 14,025	$ 7,685	$ 17,319	$ 19,272
Other Comprehensive (Loss) Income:
Foreign Currency Translation Adjustments	(1,805)	2,096	(1,572)	2,491
Retirement Liability Adjustment – Net of Tax	215	131	430	262
Total Other Comprehensive (Loss) Income	(1,590)	2,227	(1,142)	2,753
Comprehensive Income	$ 12,435	$ 9,912	$ 16,177	$ 22,025

XML

Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017
Cash Flows From Operating Activities:
Net Income	$ 17,319	$ 19,272
Adjustments to Reconcile Net Income to Cash Provided By Operating Activities:
Depreciation and Amortization	18,584	12,587
Provisions for Non-Cash Losses on Inventory and Receivables	1,819	918
Stock Compensation Expense	1,637	1,456
Deferred Tax Benefit	(516)	(536)
Other	(431)	(804)
Cash Flows from Changes in Operating Assets and Liabilities:
Accounts Receivable	(33,347)	(7,076)
Inventories	(19,761)	(10,453)
Accounts Payable	7,981	3,349
Accrued Expenses	53	(7,106)
Other Current Assets and Liabilities	(404)	(2,668)
Customer Advanced Payments and Deferred Revenue	14,469	(4,143)
Income Taxes	(189)	(1,028)
Supplemental Retirement and Other Liabilities	896	758
Cash Provided By Operating Activities	8,110	4,526
Cash Flows From Investing Activities:
Acquisition of Business, Net of Cash Acquired	0	10,223
Capital Expenditures	(8,495)	(5,750)
Other Investing Activities	0	(186)
Cash Used For Investing Activities	(8,495)	(15,787)
Cash Flows From Financing Activities:
Proceeds from Long-term Debt	30,015	22,000
Payments for Long-term Debt	(36,416)	(7,341)
Purchase of Outstanding Shares for Treasury	0	(13,524)
Debt Acquisition Costs	(516)	0
Proceeds from Exercise of Stock Options	281	317
Cash (Used For) Provided By Financing Activities	(6,636)	1,452
Effect of Exchange Rates on Cash	(285)	176
Decrease in Cash and Cash Equivalents	(7,306)	(9,633)
Cash and Cash Equivalents at Beginning of Period	17,914	17,901
Cash and Cash Equivalents at End of Period	$ 10,608	$ 8,268

XML

Basis of Presentation

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation have been included.

Operating Results

The results of operations for any interim period are not necessarily indicative of results for the full year. Operating results for the six months ended June 30, 2018 are not necessarily indicative of the results that may be expected for the year ending December 31, 2018.

The balance sheet at December 31, 2017 has been derived from the audited financial statements at that date, but does not include all of the information and footnotes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements.

For further information, refer to the financial statements and footnotes thereto included in Astronics Corporation’s 2017 annual report on Form 10-K.

Description of the Business

Astronics Corporation (“Astronics” or the “Company”) is a leading provider of advanced technologies to the global aerospace, defense, electronics and semiconductor industries. Our products and services include advanced, high-performance electrical power generation, distribution and motion systems, lighting and safety systems, avionics products, systems and certification, aircraft structures and automated test systems.

We have operations in the United States (“U.S.”), Canada and France. We design and build our products through our wholly owned subsidiaries Astronics Advanced Electronic Systems Corp. (“AES”); Astronics AeroSat Corporation (“AeroSat”); Armstrong Aerospace, Inc. (“Armstrong”); Astronics Test Systems, Inc. (“ATS”); Ballard Technology, Inc. (“Ballard”); Astronics Connectivity Systems and Certification Corp. (“CSC”); Astronics Custom Control Concepts Inc. (“CCC”); Astronics DME LLC (“DME”); Luminescent Systems, Inc. (“LSI”); Luminescent Systems Canada, Inc. (“LSI Canada”); Max-Viz, Inc. (“Max-Viz”); Peco, Inc. (“Peco”); and PGA Electronic s.a. (“PGA”).

On April 3, 2017, Astronics Custom Control Concepts Inc., a wholly owned subsidiary of the Company acquired substantially all the assets and certain liabilities of Custom Control Concepts LLC, located in Kent, Washington. CCC is a provider of cabin management and in-flight entertainment systems for a range of aircraft. CCC is included in our Aerospace segment.

On December 1, 2017, Astronics acquired substantially all of the assets of Telefonix Inc. and a related company, Product Development Technologies, LLC and its subsidiaries, to become CSC, primarily located in Waukegan and Lake Zurich, Illinois. CSC designs and manufactures advanced in-flight entertainment and connectivity equipment, and provides industry leading design consultancy services for the global aerospace industry. CSC is included in our Aerospace Segment.

For additional information regarding these acquisitions see Note 18.

Cost of Products Sold, Engineering and Development and Selling, General and Administrative Expenses

Cost of products sold includes the costs to manufacture products such as direct materials and labor and manufacturing overhead as well as all engineering and development costs. The Company is engaged in a variety of engineering and design activities as well as basic research and development activities directed to the substantial improvement or new application of the Company’s existing technologies. These costs are expensed when incurred and included in cost of products sold. Research and development, design and related engineering amounted to $28.9 million and $23.0 million for the three months ended and $57.8 million and $45.8 million for the six months ended June 30, 2018 and July 1, 2017, respectively. Selling, general and administrative expenses include costs primarily related to our sales and marketing departments and administrative departments. Interest expense is shown net of interest income. Interest income was insignificant for the three and six months ended June 30, 2018 and July 1, 2017.

Foreign Currency Translation

The aggregate transaction gain or loss included in operations was insignificant for the three and six months ended June 30, 2018 and July 1, 2017.

Precontract Costs

The Company may, from time to time, incur costs in excess of the amounts required for existing contracts. If it is determined the costs are probable of recovery from future orders, the precontract costs incurred are capitalized, excluding start-up costs which are expensed as incurred. Capitalized precontract costs are included in Inventories in the accompanying Consolidated Balance Sheets. Should future orders not materialize or it is determined the costs are no longer probable of recovery, the capitalized costs are written off.  Included in inventories at June 30, 2018 are capitalized precontract costs of $9.5 million.

Newly Adopted and Recent Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), that, together with several subsequent updates, outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance. ASU 2014-09 is based on the principle that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  ASU 2014-09 also provides for enhanced disclosure requirements surrounding revenue recognition. 

Prior to the adoption of ASU 2014-09, revenue on a significant portion of our contracts had been recognized at the time of shipment of goods, transfer of title and customer acceptance, as required. Our revenue transactions generally consist of a single performance obligation to transfer promised goods and are not accounted for under industry-specific guidance. We have retained much of the same accounting treatment used to recognize revenue under the prior standard. However, the adoption of ASU 2014-09 required us to accelerate the recognition of revenue as compared to the prior standard for certain customers, in cases where we produce products unique to those customers, and for which we would have an enforceable right of payment, inclusive of profit, for production completed to date.

We adopted ASU 2014-09 on January 1, 2018 using the modified retrospective method, which required the recognition of the cumulative effect of the transition as an adjustment to retained earnings. The Company elected to apply the standard only to open contracts as of January 1, 2018. Based on the application of the changes described above, we recognized a transition adjustment of $3.3 million, net of tax effects, which increased our January 1, 2018 retained earnings. Based on our existing operations, ASU 2014-09 is not expected to have a material impact to net earnings for the year ended December 31, 2018. Refer to Note 2 for additional information.

During the first quarter of 2018, the Company early-adopted ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows for a reclassification from accumulated other comprehensive income (loss) to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. The Company applied the guidance as of the beginning of the period of adoption and reclassified approximately $1.4 million from accumulated other comprehensive loss to retained earnings due to the change in federal corporate tax rate.

In February 2016, the FASB issued ASU No. 2016-02, Leases. The new standard is effective for reporting periods beginning after December 15, 2018. Early adoption is permitted. The standard will require lessees to report most leases as assets and liabilities on the balance sheet, while lessor accounting will remain substantially unchanged. The standard requires a modified retrospective transition approach for existing leases, whereby the new rules will be applied to the earliest year presented. The Company is currently evaluating the impact of ASU 2016-02 on our financial statements.

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfer of Assets Other Than Inventory, which requires entities to recognize income tax consequences of intra-entity transfers of assets, other than inventory, when the transfer occurs rather than when the asset is sold to a third party as is the case under current GAAP. The Company adopted ASU 2016-16 effective January 1, 2018, and such adoption did not have a material impact on the consolidated financial statements

In January 2017, the FASB issued ASU No. 2017-01, Clarifying the Definition of a Business, which narrows the existing definition of a business and provides a framework for evaluating whether a transaction should be accounted for as an acquisition (or disposal) of assets or a business. The ASU requires an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets; if so, the set of transferred assets and activities (collectively, the set) is not a business. To be considered a business, the set would need to include an input and a substantive process that together significantly contribute to the ability to create outputs. The standard also narrows the definition of outputs. The definition of a business affects areas of accounting such as acquisitions, disposals and goodwill. Under the new guidance, fewer acquired sets are expected to be considered businesses. The Company adopted ASU 2017-01 effective January 1, 2018. The Company will apply this guidance to applicable transactions after the adoption date on a prospective basis. No applicable transactions have occurred as of June 30, 2018.

In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. This ASU changes how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. This ASU was adopted as of January 1, 2018 on a retrospective basis. Under the new standard, only the service cost component of net periodic benefit cost would be included in operating expenses. All other net periodic benefit costs components (such as interest cost, prior service cost amortization and actuarial gain/loss amortization) would be reported outside of operating income. These include components totaling $0.5 million and $0.4 million for the three months ended and $1.0 million and $0.9 million for the six months ended June 30, 2018 and July 1, 2017, respectively, that no longer are included within Selling, General and Administrative Expenses and instead are reported outside of income from operations, within Other Expense, Net of Other Income in our Consolidated Statements of Operations.

In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting, that clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as a modification. The general model for accounting for modifications of share-based payment awards is to record the incremental value arising from the changes as additional compensation cost. Under the new standard, fewer changes to the terms of an award would require accounting under this modification model. This ASU was adopted as of January 1, 2018. As the Company has not made changes to the terms or conditions of its issued share-based payment awards, this ASU had no impact on our consolidated results of operations and financial condition.

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Revenue

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

As discussed in Note 1, ASU 2014-09 was adopted on January 1, 2018 using the modified retrospective method, which required the recognition of the cumulative effect of the transition as an adjustment to retained earnings.

Revenue is recognized when, or as, the Company transfers control of promised products or services to a customer in an amount that reflects the consideration the Company expects to be entitled in exchange for transferring those products or service.

Payment terms and conditions vary by contract, although terms generally include a requirement of payment within a range from 30 to 60 days, or in certain cases, up-front deposits. In circumstances where the timing of revenue recognition differs from the timing of invoicing, the Company has determined that the Company's contracts generally do not include a significant financing component. Taxes collected from customers, which are subsequently remitted to governmental authorities, are excluded from sales.

The Company recognizes an asset for the incremental, material costs of obtaining a contract with a customer if the Company expects the benefit of those costs to be longer than one year and the costs are expected to be recovered. As of June 30, 2018, the Company does not have such incremental, material costs on any open contracts with an original expected duration of greater than one year, and therefore such costs are expensed as incurred. These incremental costs include, but are not limited to, sales commissions incurred to obtain a contract with a customer.

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. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, 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 is not separately identifiable from other promises in the contracts which are, therefore, not distinct. Promised goods or services that are immaterial in the context of the contract are not separately assessed as performance obligations.

Some of our contracts have multiple performance obligations, most commonly due to the contract covering multiple phases of the product lifecycle (development, production, maintenance and support). For contracts with multiple performance obligations, the contract’s transaction price is allocated 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 standalone selling price is the expected cost plus a margin approach, under which expected costs are forecast to satisfy a performance obligation and then an appropriate margin is added for that distinct good or service. Shipping and handling activities that occur after the customer has obtained control of the good are considered fulfillment activities, not performance obligations.

Some of our contracts offer price discounts or free units after a specified volume has been purchased.  The Company evaluates these options to determine whether they provide a material right to the customer, or represent a separate performance obligation. If the option provides a material right to the customer, revenue is allocated to these rights and recognized when those future goods or services are transferred, or when the option expires.

Contract modifications are routine in the performance of our contracts. Contracts are often modified to account for changes in contract specifications or requirements. In most instances, contract modifications are for goods or services that are not distinct, and, therefore, are accounted for as part of the existing contract. The aggregate effect of all modifications as of the period beginning January 1, 2018 has been reflected when identifying the satisfied and unsatisfied performance obligations, determining the transaction price and allocating the transaction price. Contracts modified prior to January 1, 2018 have not been retrospectively restated.

The vast majority of the Company’s revenue from contracts with customers is recognized at a point in time, when the customer obtains control of the promised product, which is generally upon delivery and acceptance by the customer.  These contracts may provide credits or incentives, which may be accounted for as variable consideration.  Variable consideration is estimated at the most likely amount to predict the consideration to which the Company will be entitled, and only to the extent it is probable that a subsequent change in estimate will not result in a significant revenue reversal when estimating the amount of revenue to recognize.  Variable consideration is treated as a change to the sales transaction price and based on an assessment of all information (i.e., historical, current and forecasted) that is reasonably available to the Company, and estimated at contract inception and updated at the end of each reporting period as additional information becomes available. Most of our contracts do not contain rights to return product; where this right does exist, it is evaluated as possible variable consideration.

For contracts with customers in which the Company satisfies a promise to the customer to provide a product that has no alternative use to the Company and the Company has enforceable rights to payment for progress completed to date inclusive of profit, the Company satisfies the performance obligation and recognizes revenue over time, using costs incurred to date relative to total estimated costs at completion to measure progress toward satisfying our performance obligations.  Incurred cost represents work performed, which corresponds with, and thereby best depicts, the transfer of control to the customer.  Contract costs include labor, material and overhead. 

The Company also recognizes revenue from service contracts (including service-type warranties) over time.  The Company recognizes revenue over time during the term of the agreement as the customer is simultaneously receiving and consuming the benefits provided throughout the Company’s performance.  Therefore, due to control transferring over time, the Company typically recognizes revenue on a straight-line basis throughout the contract period.

On June 30, 2018, we had $376.9 million of remaining performance obligations, which we refer to as total backlog. We expect to recognize approximately $309.1 million of our remaining performance obligations as revenue in 2018.

We recognized the cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of retained earnings. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

The cumulative effect of the changes made to our consolidated January 1, 2018 balance sheet for the adoption of  ASU 2014-09, were as follows (in thousands):

Balance Sheet	Balance at December 31, 2017		Adjustments Due to ASU 2014-09			Balance at January 1, 2018
Assets
Accounts Receivable, Net of Allowance for Doubtful Accounts	$	132,633	$	4,005		$	136,638
Inventories	$	150,196	$	(7,957	)	$	142,239
Liabilities
Accrued Income Taxes	$	261	$	1,028		$	1,289
Customer Advance Payments and Deferred Revenue	$	19,607	$	(8,176	)	$	11,431
Deferred Income Taxes	$	5,121	$	(72	)	$	5,049
Equity
Retained Earnings	$	325,191	$	3,268		$	328,459

In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on our consolidated income statement and balance sheet was as follows (in thousands):

	For the Six Months Ended June 30, 2018							For the Three Months Ended June 30, 2018
Income Statement	As Reported		Effect of Change Higher/(Lower)			Balances Without Adoption of ASU 2014-09		As Reported		Effect of Change Higher/(Lower)			Balances Without Adoption of ASU 2014-09
Revenues
Aerospace	$	330,804	$	(771	)	$	331,575	$	166,204	$	(1,429	)	$	167,633
Test Systems	$	56,861	$	(575	)	$	57,436	$	42,402	$	(2,536	)	$	44,938
Costs and Expenses
Cost of Products Sold	$	300,961	$	(1,467	)	$	302,428	$	159,034	$	(2,814	)	$	161,848
Provision for Income Taxes	$	3,789	$	21		$	3,768	$	3,157	$	(272	)	$	3,429
Net Income	$	17,319	$	100		$	17,219	$	14,025	$	(879	)	$	14,904

	June 30, 2018
Balance Sheet	As Reported		Effect of Change Higher/(Lower)			Balances Without Adoption of ASU 2014-09
Assets
Accounts Receivable, Net of Allowance for Doubtful Accounts	$	169,496	$	6,330		$	163,166
Inventories	$	159,479	$	(6,490	)	$	165,969
Liabilities
Accrued Expenses and Other Current Liabilities	$	38,590	$	1,295		$	37,295
Customer Advance Payments and Deferred Revenue	$	25,429	$	(4,505	)	$	29,934
Other Liabilities	$	34,189	$	(318	)	$	34,507
Equity
Other Shareholders' Equity	$	366,859	$	3,368		$	363,491

Costs in excess of billings includes unbilled amounts resulting from revenues under contracts with customers that are satisfied over time and when the cost-to-cost measurement method of revenue recognition is utilized and revenue recognized exceeds the amount billed to the customer, and right to payment is not just subject to the passage of time. Amounts may not exceed their net realizable value. Costs in excess of billings are classified as current assets, within Accounts Receivable, Net of Allowance for Doubtful Accounts on our Consolidated Balance Sheet.

Billings in excess of cost includes billings in excess of revenue recognized as well as deferred revenue, which includes advanced payments, up-front payments, and progress billing payments. Billings in excess of cost are classified as current liabilities, reported in our Consolidated Balance Sheet within Customer Advance Payments and Deferred Revenue. To determine the revenue recognized in the period from the beginning balance of billings in excess of cost, the contract liability as of the beginning of the period is recognized as revenue on a contract-by-contract basis when the Company incurs costs to satisfy the performance obligation related to the individual contract. Once the beginning contract liability balance for an individual contract has been fully recognized as revenue, any additional payments received in the period are recognized as revenue once the related costs have been incurred.

During the three months ended and six months ended June 30, 2018, we recognized $8.4 million and $11.6 million, respectively, in revenues that were included in the contract liability balance at the adoption date.

The Company's contract assets and contract liabilities consist of costs in excess of billings and billings in excess of cost, respectively. The following table presents the beginning and ending balances of contract assets and contract liabilities during the six months ended June 30, 2018 (in thousands):

	Contract Assets		Contract Liabilities
Beginning Balance, January 1, 2018 (1)	$	24,423	$	11,431
Ending Balance, June 30, 2018	$	20,672	$	25,429
(1) Due to the adoption of ASU 2014-09 effective January 1, 2018, the Company recorded a transition adjustment to the opening balance of Contract Assets and Contract Liabilities at January 1, 2018. Refer to the cumulative effect of the changes table above for further explanation of the changes made to our consolidated January 1, 2018 balance sheet.

The following table presents our revenue disaggregated by Market Segments (in thousands):

	Six Months Ended				Three Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Aerospace Segment
Commercial Transport	$	265,847	$	208,079	$	132,797	$	98,355
Military	30,285		30,931		16,270		15,785
Business Jet	21,002		18,251		10,338		10,716
Other	13,670		9,113		6,799		4,691
Aerospace Total	330,804		266,374		166,204		129,547
Test Systems Segment
Semiconductor	38,465		11,711		31,405		7,080
Aerospace & Defense	18,396		25,425		10,997		14,487
Test Systems Total	56,861		37,136		42,402		21,567
Total	$	387,665	$	303,510	$	208,606	$	151,114

The following table presents our revenue disaggregated by Product Lines (in thousands):

	Six Months Ended				Three Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Aerospace Segment
Electrical Power & Motion	$	140,321	$	135,040	$	67,643	$	62,597
Lighting & Safety	85,763		85,316		44,121		42,646
Avionics	69,295		20,076		36,272		10,940
Systems Certification	9,655		4,952		4,872		2,793
Structures	12,100		11,877		6,497		5,880
Other	13,670		9,113		6,799		4,691
Aerospace Total	330,804		266,374		166,204		129,547
Test Systems	56,861		37,136		42,402		21,567
Total	$	387,665	$	303,510	$	208,606	$	151,114

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Inventories

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are as follows:

(In thousands)	June 30, 2018		December 31, 2017
Finished Goods	$	29,276	$	35,193
Work in Progress	40,560		33,219
Raw Material	89,643		81,784
	$	159,479	$	150,196

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Property, Plant and Equipment

6 Months Ended

Jun. 30, 2018

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

The following table summarizes Property, Plant and Equipment as follows:

(In thousands)	June 30, 2018		December 31, 2017
Land	$	11,212	$	11,237
Buildings and Improvements	82,000		81,872
Machinery and Equipment	105,991		105,827
Construction in Progress	8,356		9,761
	207,559		208,697
Less Accumulated Depreciation	82,863		82,867
	$	124,696	$	125,830

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Intangible Assets

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets

The following table summarizes acquired intangible assets as follows:

		June 30, 2018				December 31, 2017
(In thousands)	Weighted Average Life	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Patents	11 Years	$	2,146	$	1,672	$	2,146	$	1,629
Non-compete Agreement	4 Years	10,900		3,184		10,900		1,687
Trade Names	10 Years	11,471		4,648		11,492		4,114
Completed and Unpatented Technology	10 Years	38,078		13,945		38,114		11,931
Backlog	2 Years	14,424		14,424		14,424		12,184
Customer Relationships	15 Years	137,902		34,504		137,967		30,005
Total Intangible Assets	12 Years	$	214,921	$	72,377	$	215,043	$	61,550

All acquired intangible assets other than goodwill and one trade name are being amortized. Amortization expense for acquired intangibles is summarized as follows:

	Six Months Ended				Three Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Amortization Expense	$	10,868	$	5,340	$	4,867	$	2,722

Amortization expense for acquired intangible assets expected for 2018 and for each of the next five years is summarized as follows:

(In thousands)
2018	$	19,384
2019	16,700
2020	15,975
2021	14,065
2022	13,631
2023	12,463

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Goodwill

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Goodwill

The following table summarizes the changes in the carrying amount of goodwill for the six months ended June 30, 2018:

(In thousands)	December 31, 2017		Acquisition/Adjustments			Foreign Currency Translation			June 30, 2018
Aerospace	$	125,645	$	(141	)	$	(267	)	$	125,237
Test Systems	—		—			—			—
	$	125,645	$	(141	)	$	(267	)	$	125,237

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Long-term Debt and Notes Payable

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Long-term Debt and Notes Payable

Long-term Debt and Notes Payable

The Company's Fourth Amended and Restated Credit Agreement (the “Original Facility”) provided for a $350 million revolving credit line with the option to increase the line by up to $150 million. The maturity date of the Original Facility was January 13, 2021. On February 16, 2018, the Company modified and extended the Original Facility by entering into the Fifth Amended and Restated Credit Agreement (the “Agreement”), which provides for a $500 million revolving credit line with the option to increase the line by up to $150 million. A new lender was added to the facility as well. The outstanding balance of the Original Facility was rolled into the Agreement on the date of closing. The maturity date of the loans under the Agreement is February 16, 2023. At June 30, 2018, there was $257.0 million outstanding on the revolving credit facility and there remains $241.9 million available, net of outstanding letters of credit. The credit facility allocates up to $20 million of the $500 million revolving credit line for the issuance of letters of credit, including certain existing letters of credit. At June 30, 2018, outstanding letters of credit totaled $1.1 million.

The maximum permitted leverage ratio of funded debt to Adjusted EBITDA (as defined in the Agreement) is 3.75 to 1, increasing to 4.50 to 1 for up to four fiscal quarters following the closing of an acquisition permitted under the Agreement, subject to limitations. The Company’s leverage ratio was 2.80 to 1 at June 30, 2018. The Company will pay interest on the unpaid principal amount of the facility at a rate equal to one-, three- or six-month LIBOR plus between 1.00% and 1.50% based upon the Company’s leverage ratio. The Company will also pay a commitment fee to the lenders in an amount equal to between 0.10% and 0.20% on the undrawn portion of the credit facility, based upon the Company’s leverage ratio.

The Company’s obligations under the Credit Agreement as amended are jointly and severally guaranteed by each domestic subsidiary of the Company other than a non-material subsidiary. The obligations are secured by a first priority lien on substantially all of the Company’s and the guarantors’ assets.

In the event of voluntary or involuntary bankruptcy of the Company or any subsidiary, all unpaid principal and other amounts owing under the Agreement automatically become due and payable. Other events of default, such as failure to make payments as they become due and breach of financial and other covenants, change of control, judgments over a certain amount, and cross default under other agreements give the Agent the option to declare all such amounts immediately due and payable.

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Product Warranties

6 Months Ended

Jun. 30, 2018

Product Warranties Disclosures [Abstract]

Product Warranties

Product Warranties

In the ordinary course of business, the Company warrants its products against defects in design, materials and workmanship typically over periods ranging from 12 to 60 months. The Company determines warranty reserves needed by product line based on experience and current facts and circumstances. Activity in the warranty accrual is summarized as follows: 

	Six Months Ended						Three Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Balance at Beginning of Period	$	5,136		$	4,675		$	5,115		$	4,357
Acquisitions	—			359			—			359
Warranties Issued	1,301			832			734			365
Warranties Settled	(1,285		)	(1,224		)	(645		)	(517		)
Reassessed Warranty Exposure	28			(5		)	(24		)	73
Balance at End of Period	$	5,180		$	4,637		$	5,180		$	4,637

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Income Taxes

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The effective tax rates were approximately 18.0% and 26.0% for the six months ended and 18.4% and 27.3% for the three months ended June 30, 2018 and July 1, 2017, respectively. The 2018 tax rates were favorably impacted relative to the applicable year's statutory rate by the federal research and development tax credit, the impact of which was partially offset by state tax expense.

On December 22, 2017, the President of the United States signed into law the Tax Cuts and Jobs Act (the “Act”). The legislation significantly changed U.S. tax law by, among other things, lowering corporate income tax rates, implementing a territorial tax system and imposing a repatriation tax on deemed repatriated earnings of foreign subsidiaries. The Act permanently reduced the U.S. corporate income tax rate from a maximum of 35% to a 21% rate, effective January 1, 2018.

While the Tax Cuts and Jobs Act provides for a territorial tax system, beginning in 2018, it includes the foreign-derived intangible income (“FDII”) and global intangible low-taxed income (“GILTI”) provisions. The Company elected to account for GILTI tax in the period in which it is incurred. The GILTI provisions require the Company to include in its U.S. income tax return foreign subsidiary earnings in excess of an allowable return on the foreign subsidiary’s tangible assets. The GILTI tax expense resulted from required allocations of interest expense to the GILTI income, which created a U.S. foreign tax credit limitation. The FDII provisions allow for a deduction equal to a percentage of the foreign-derived intangible income of a domestic corporation. As a result of these provisions, net, the Company’s effective tax rate decreased approximately 0.3% and increased approximately 0.2% for the six months and three months ended June 30, 2018, respectively.

On December 22, 2017, the SEC staff issued Staff Accounting Bulletin No. 118 (“SAB 118”) to address the application of GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Act. The Company recognized provisional tax impacts related to the deemed repatriated earnings and the revaluation of deferred tax assets and liabilities in its consolidated financial statements for the year ended December 31, 2017. During the six months and three months ended June 30, 2018, the Company did not make any adjustments to its provisional amounts included in its consolidated financial statements for the year ended December 31, 2017. The company is still obtaining and analyzing historical records and finalizing its calculation of these provisional amounts. The accounting is expected to be completed in the fourth quarter of 2018 after the 2017 U.S. corporate income tax return is filed.

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Shareholders' Equity

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Shareholders' Equity

Shareholders’ Equity

The changes in shareholders’ equity for the six months ended June 30, 2018 are summarized as follows:

				Number of Shares
(Dollars and Shares in thousands)	Amount			Common Stock			Convertible Class B Stock
Shares Authorized				40,000			15,000
Share Par Value				$	0.01		$	0.01
COMMON STOCK
Beginning of Period	$	297		22,861			6,852
Conversion of Class B Shares to Common Shares	—			332			(332		)
Exercise of Stock Options	1			26			38
End of Period	$	298		23,219			6,558
ADDITIONAL PAID IN CAPITAL
Beginning of Period	$	67,791
Stock Compensation Expense	1,637
Exercise of Stock Options	280
End of Period	$	69,708
ACCUMULATED OTHER COMPREHENSIVE LOSS
Beginning of Period	$	(13,352	)
Adoption of ASU 2018-02	(1,373		)
Foreign Currency Translation Adjustment	(1,572		)
Retirement Liability Adjustment – Net of Tax	430
End of Period	$	(15,867	)
RETAINED EARNINGS
Beginning of Period	$	325,191
Adoption of ASU 2014-09	3,268
Adoption of ASU 2018-02	1,373
Net Income	17,319
End of Period	$	347,151
TREASURY STOCK
Beginning of Period	$	(50,000	)	(1,675		)
Purchase	—			—
End of Period	$	(50,000	)	(1,675		)
TOTAL SHAREHOLDERS’ EQUITY
Beginning of Period	$	329,927
End of Period	$	351,290		21,544			6,558

On February 24, 2016, the Company’s Board of Directors authorized the repurchase of up to $50 million of common stock (the “Buyback Program”). The Buyback Program allowed the Company to purchase shares of its common stock in accordance with applicable securities laws on the open market or through privately negotiated transactions. The Company has repurchased approximately 1,675,000 shares and has completed that program. On December 12, 2017, the Company’s Board of Directors authorized an additional repurchase of up to $50 million. No amounts have been repurchased under the new program as of June 30, 2018.

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Earnings Per Share

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Basic and diluted weighted-average shares outstanding are as follows:

	Six Months Ended		Three Months Ended
(In thousands)	June 30, 2018	July 1, 2017	June 30, 2018	July 1, 2017
Weighted Average Shares - Basic	28,085	29,007	28,098	28,911
Net Effect of Dilutive Stock Options	670	1,128	704	1,178
Weighted Average Shares - Diluted	28,755	30,135	28,802	30,089

Stock options with exercise prices greater than the average market price of the underlying common shares are excluded from the computation of diluted earnings per share because they are out-of-the-money and the effect of their inclusion would be anti-dilutive. The number of common shares covered by out-of-the-money stock options was approximately 139,000 shares as of June 30, 2018.

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Accumulated Other Comprehensive Loss and Other Comprehensive Income

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Accumulated Other Comprehensive Loss and Other Comprehensive Income

Accumulated Other Comprehensive Loss and Other Comprehensive Income

The components of accumulated other comprehensive loss are as follows:

(In thousands)	June 30, 2018			December 31, 2017
Foreign Currency Translation Adjustments	$	(6,037	)	$	(4,465	)
Retirement Liability Adjustment – Before Tax	(12,443		)	(12,988		)
Tax Benefit of Retirement Liability Adjustment	3,986			4,101
Adoption of ASU 2018-02	(1,373		)	—
Retirement Liability Adjustment – After Tax	(9,830		)	(8,887		)
Accumulated Other Comprehensive Loss	$	(15,867	)	$	(13,352	)

The components of other comprehensive (loss) income are as follows:

	Six Months Ended						Three Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Foreign Currency Translation Adjustments	$	(1,572	)	$	2,491		$	(1,805	)	$	2,096
Retirement Liability Adjustments:
Reclassifications to General and Administrative Expense:
Amortization of Prior Service Cost	202			202			101			102
Amortization of Net Actuarial Losses	343			201			172			99
Tax Benefit	(115		)	(141		)	(58		)	(70		)
Retirement Liability Adjustment	430			262			215			131
Other Comprehensive (Loss) Income	$	(1,142	)	$	2,753		$	(1,590	)	$	2,227

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Supplemental Retirement Plan and Related Post Retirement Benefits

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

Supplemental Retirement Plan and Related Post Retirement Benefits

Supplemental Retirement Plan and Related Post Retirement Benefits

The Company has two non-qualified supplemental retirement defined benefit plans (“SERP” and “SERP II”) for certain executive officers. The following table sets forth information regarding the net periodic pension cost for the plans.

	Six Months Ended				Three Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Service Cost	$	100	$	92	$	50	$	46
Interest Cost	450		448		225		224
Amortization of Prior Service Cost	194		194		97		97
Amortization of Net Actuarial Losses	314		186		157		93
Net Periodic Cost	$	1,058	$	920	$	529	$	460

Participants in the SERP are entitled to paid medical, dental and long-term care insurance benefits upon retirement under the plan. The following table sets forth information regarding the net periodic cost recognized for those benefits:

	Six Months Ended				Three Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Service Cost	$	8	$	4	$	4	$	2
Interest Cost	23		20		12		10
Amortization of Prior Service Cost	8		8		4		5
Amortization of Net Actuarial Losses	29		15		15		6
Net Periodic Cost	$	68	$	47	$	35	$	23

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Sales to Major Customers

6 Months Ended

Jun. 30, 2018

Risks and Uncertainties [Abstract]

Sales to Major Customers

Sales to Major Customers

The Company has a significant concentration of business with two major customers, each in excess of 10% of consolidated sales. The loss of either of these customers would significantly, negatively impact our sales and earnings.

Sales to these two customers represented 16% and 15% of consolidated sales for the six months ended and 12% and 14% for the three months ended June 30, 2018. Sales to these customers were in the Aerospace segment. Accounts receivable from these customers at June 30, 2018 was approximately $31.5 million. Sales to these two customers represented 20% and 18% of consolidated sales for the six months and 16% and 18% for the three months ended July 1, 2017.

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Legal Proceedings

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Legal Proceedings

Legal Proceedings

The Company is subject to various legal proceedings, claims, and litigation arising in the ordinary course of business. While the outcome of these matters is currently not determinable, we do not expect these matters will have a material adverse effect on our business, financial position, results of operations, or cash flows. However, the results of these matters cannot be predicted with certainty. Should the Company fail to prevail in any legal matter or should several legal matters be resolved against the Company in the same reporting period, then the financial results of that particular reporting period could be materially adversely affected.

On December 29, 2010, Lufthansa Technik AG (“Lufthansa”) filed a Statement of Claim in the Regional State Court of Mannheim, Germany. Lufthansa’s claim asserts that our subsidiary, AES, sold, marketed, and brought into use in Germany a power supply system that infringes upon a German patent held by Lufthansa. Lufthansa sought an order requiring AES to stop selling and marketing the allegedly infringing power supply system, a recall of allegedly infringing products sold to commercial customers in Germany since November 26, 2003, and compensation for damages related to direct sales of the allegedly infringing power supply system in Germany (referred to as “direct sales”). The claim does not specify an estimate of damages and a related damages claim is being pursued by Lufthansa in separate court proceedings in an action filed in July 2017, as further discussed below.

In February 2015, the Regional State Court of Mannheim, Germany rendered its decision that the patent was infringed. The judgment does not require AES to recall products that are already installed in aircraft or have been sold to other end users. On July 15, 2015, Lufthansa advised AES of their intention to enforce the accounting provisions of the decision, which required AES to provide certain financial information regarding direct sales of the infringing product in Germany to enable Lufthansa to make an estimate of requested damages. Additionally, if Lufthansa provides the required bank guarantee specified in the decision, the Company may be required to offer a recall of products that are in the distribution channels in Germany. No such bank guarantee has been issued to date. As of June 30, 2018, there are no products subject to the order in the distribution channels in Germany.

The Company appealed to the Higher Regional Court of Karlsruhe. On November 15, 2016, the Court issued its ruling and upheld the lower court’s decision. The Company submitted a petition to grant AES leave for appeal to the German Federal Supreme Court. On April 18, 2018, the German Federal Supreme Court granted Astronics’ petition in part, namely with respect to the part concerning the amount of damages. We estimate that the German Federal Supreme Court will provide its ruling on this issue in late 2018 or in early 2019.

In July 2017, Lufthansa filed an action in the Regional State Court of Mannheim for payment of damages caused by the alleged patent infringement of AES, related to direct sales of the allegedly infringing product in Germany (associated with the original December 2010 action discussed above). In this action, which was served on AES on April 11, 2018, Lufthansa claims payment of approximately $6.2 million plus interest. According to AES's assessment, this claim is significantly higher than justified. We estimate AES’s potential exposure to be approximately $1 million to $3 million, and have recorded a reserve of $1 million associated with this matter, which is management's best estimate of the probable exposure. Such amount is recorded within Other Accrued Expenses and Selling, General and Administrative Expenses in the accompanying financial statements as of and for the six month period ended June 30, 2018. An oral hearing has been scheduled on November 16, 2018. A first instance decision is in this matter is expected in early 2019.

On December 29, 2017, Lufthansa filed another infringement action against AES in the Regional State Court of Mannheim claiming that sales by AES to its international customers have infringed Lufthansa's patent if AES's customers later shipped the products to Germany (referred to as "indirect sales"). This action, therefore, addresses sales other than those covered by the action filed on December 29, 2010, discussed above. In this action, served on April 11, 2018, Lufthansa seeks an injunction, an order obliging AES to provide information and accounting and a finding that AES owes damages for the attacked indirect sales. AES will vigorously defend against the action. No amount of claimed damages has been specified by Lufthansa and such amount is not quantifiable at this time. An oral hearing in this matter has been scheduled on March 22, 2019. A first instance decision is in this matter is expected in mid 2019. As loss exposure is neither probable nor estimable at this time, the Company has not recorded any liability with respect to this litigation as of June 30, 2018.

In December 2017, Lufthansa filed patent infringement cases in the United Kingdom and in France against AES. The Lufthansa patent expired in May 2018. In those cases, Lufthansa accuses AES of having manufactured, used, sold and offered for sale a power supply system, and offered and supplied parts for a power supply system, that infringed upon a Lufthansa patent in those respective countries. As loss exposure is neither probable nor estimable at this time, the Company has not recorded any liability with respect to these matters as of June 30, 2018.

On November 26, 2014, Lufthansa filed a complaint in the United States District for the Western District of Washington. Lufthansa’s complaint in that action alleges that AES manufactures, uses, sells and offers for sale a power supply system that infringes upon a U.S. patent held by Lufthansa. The patent at issue in the U.S. action is based on technology similar to that involved in the German action. On April 25, 2016, the Court issued its ruling on claim construction, holding that the sole independent claim in the patent is indefinite, rendering all claims in the patent indefinite. Based on this ruling, AES filed a motion for summary judgment on the grounds that the Court’s ruling that the patent is indefinite renders the patent invalid and unenforceable. On July 20, 2016, the U.S. District Court granted the motion for summary judgment and issued an order dismissing all claims against AES with prejudice.

Lufthansa appealed the District Court's decision to the United States Court of Appeals for the Federal Circuit. On October 19, 2017, the Federal Circuit affirmed the district court’s decision, holding that the sole independent claim of the patent is indefinite, rending all claims on the patent indefinite. Lufthansa did not file a petition for en banc rehearing or petition the U.S. Supreme Court for a writ of certiorari. Therefore, there is no longer a risk of exposure from that lawsuit.

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Segment Information

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Segment Information

Segment Information

Below are the sales and operating profit by segment for the six months ended June 30, 2018 and July 1, 2017 and a reconciliation of segment operating profit to income before income taxes. Operating profit is net sales less cost of products sold and other operating expenses excluding interest and corporate expenses. Cost of products sold and other operating expenses are directly identifiable to the respective segment.

	Six Months Ended						Three Months Ended
(Dollars in thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Sales
Aerospace	$	330,857		$	266,374		$	166,257		$	129,547
Less Intersegment Sales	(53		)	—			(53		)	—
Total Aerospace Sales	330,804			266,374			166,204			129,547
Test Systems	56,861			37,136			$	42,402		$	21,567
Total Consolidated Sales	$	387,665		$	303,510		$	208,606		$	151,114
Operating Profit and Margins
Aerospace	$	31,315		$	33,738		$	18,200		$	13,984
	9.5		%	12.7		%	11.0		%	10.8		%
Test Systems	4,318			1,750			6,247			1,432
	7.6		%	4.7		%	14.7		%	6.6		%
Total Operating Profit	35,633			35,488			24,447			15,416
	9.2		%	11.7		%	11.7		%	10.2		%
Deductions from Operating Profit
Interest Expense, Net of Interest Income	4,815			2,313			2,484			1,180
Corporate Expenses and Other	9,710			7,115			4,781			3,667
Income Before Income Taxes	$	21,108		$	26,060		$	17,182		$	10,569

Total Assets:

(In thousands)	June 30, 2018		December 31, 2017
Aerospace	$	632,365	$	621,047
Test Systems	110,903		90,859
Corporate	21,155		24,050
Total Assets	$	764,423	$	735,956

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Fair Value

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value

Fair Value

A fair value measurement assumes that the transaction to sell an asset or transfer a liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. Fair value is based upon an exit price model. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and involves consideration of factors specific to the asset or liability.

The Company follows a valuation hierarchy for disclosure of the inputs to valuation used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows:

Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities.

Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.

Level 3 inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value.

On a Recurring Basis:

A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. There were no financial assets or liabilities carried at fair value measured on a recurring basis at December 31, 2017 or June 30, 2018.

On a Non-recurring Basis:

The Company estimates the fair value of reporting units, utilizing unobservable Level 3 inputs. Level 3 inputs require significant management judgment due to the absence of quoted market prices or observable inputs for assets of a similar nature. The Company utilizes a discounted cash flow analysis to estimate the fair value of reporting units utilizing unobservable inputs. The fair value measurement of the reporting unit under the step-one and step-two analysis of the quantitative goodwill impairment test are classified as Level 3 inputs.

Intangible assets that are amortized are evaluated for recoverability whenever adverse effects or changes in circumstances indicate that the carrying value may not be recoverable. The recoverability test consists of comparing the undiscounted projected cash flows with the carrying amount. Should the carrying amount exceed undiscounted projected cash flows, an impairment loss would be recognized to the extent the carrying amount exceeds fair value. For the Company’s indefinite-lived intangible asset, the impairment test consists of comparing the fair value, determined using the relief from royalty method, with its carrying amount. An impairment loss would be recognized for the carrying amount in excess of its fair value.

Due to their short-term nature, the carrying value of cash and equivalents, accounts receivable, accounts payable, and notes payable approximate fair value. The carrying value of the Company’s variable rate long-term debt instruments also approximates fair value due to the variable rate feature of these instruments. As of June 30, 2018, the Company concluded that no indicators of impairment relating to intangible assets or goodwill existed and an interim test was not performed.

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Acquisitions

6 Months Ended

Jun. 30, 2018

Business Combinations [Abstract]

Acquisitions

Acquisitions

Astronics Custom Control Concepts, Inc.

On April 3, 2017, Astronics Custom Control Concepts Inc., a wholly owned subsidiary of the Company, acquired substantially all the assets and certain liabilities of Custom Control Concepts LLC (“CCC”), located in Kent, Washington. CCC is a provider of cabin management and in-flight entertainment systems for a range of aircraft. The total consideration for the transaction was approximately $10.2 million, net of $0.5 million in cash acquired. All of the goodwill and purchased intangible assets are expected to be deductible for tax purposes over 15 years. The purchase price allocation for this acquisition has been finalized. CCC is included in our Aerospace segment.

Astronics Connectivity Systems and Certifications Corp.

On December 1, 2017, Astronics acquired substantially all of the assets of Telefonix Inc. and a related company, Product Development Technologies, LLC and its subsidiaries, to become Astronics Connectivity Systems and Certifications Corp. ("CSC"), primarily located in Waukegan and Lake Zurich, Illinois. CSC designs and manufactures advanced in-flight entertainment and connectivity equipment, and provides industry-leading design consultancy services for the global aerospace industry. The total consideration for the transaction was approximately $103.8 million, net of $0.2 million in cash acquired. All of the goodwill and purchased intangible assets are expected to be deductible for tax purposes over 15 years. CSC is included in our Aerospace Segment. The purchase price allocation for this acquisition has not yet been finalized.

Refer to the Company's annual report on form 10-K for the fiscal year ended December 31, 2017 for further details on the assets acquired and liabilities assumed.  There have been no significant changes to the preliminary allocation of purchase price in the three months ended June 30, 2018.

The following summary, prepared on a pro forma basis, combines the consolidated results of operations of the Company with those of CSC as if the acquisition took place on January 1, 2017. The pro forma consolidated results include the impact of certain adjustments, including increased interest expense on acquisition debt, amortization of purchased intangible assets and income taxes.

Unaudited	Six Months Ended				Three Months Ended
(in thousands, except earnings per share)	July 1, 2017 as reported		July 1, 2017 Pro Forma		July 1, 2017 as reported		July 1, 2017 Pro Forma
Sales	$	303,510	$	333,169	$	151,114	$	168,565
Net income	$	19,272	$	18,232	$	7,685	$	7,880
Basic earnings per share	$	0.66	$	0.63	$	0.27	$	0.27
Diluted earnings per share	$	0.64	$	0.61	$	0.26	$	0.26

The pro forma results are not necessarily indicative of what actually would have occurred if the acquisition had been in effect for the three and six months ended July 1, 2017. In addition, they are not intended to be a projection of future results.

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Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation have been included.

Operating Results

Operating Results

The results of operations for any interim period are not necessarily indicative of results for the full year. Operating results for the six months ended June 30, 2018 are not necessarily indicative of the results that may be expected for the year ending December 31, 2018.

The balance sheet at December 31, 2017 has been derived from the audited financial statements at that date, but does not include all of the information and footnotes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements.

Description of the Business

Description of the Business

Astronics Corporation (“Astronics” or the “Company”) is a leading provider of advanced technologies to the global aerospace, defense, electronics and semiconductor industries. Our products and services include advanced, high-performance electrical power generation, distribution and motion systems, lighting and safety systems, avionics products, systems and certification, aircraft structures and automated test systems.

Cost of Products Sold, Engineering and Development and Selling, General and Administrative Expenses

Cost of Products Sold, Engineering and Development and Selling, General and Administrative Expenses

Cost of products sold includes the costs to manufacture products such as direct materials and labor and manufacturing overhead as well as all engineering and development costs. The Company is engaged in a variety of engineering and design activities as well as basic research and development activities directed to the substantial improvement or new application of the Company’s existing technologies. These costs are expensed when incurred and included in cost of products sold.

Foreign Currency Translation

Foreign Currency Translation

The aggregate transaction gain or loss included in operations was insignificant for the three and six months ended June 30, 2018 and July 1, 2017.

Newly Adopted and Recent Accounting Pronouncements

Newly Adopted and Recent Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), that, together with several subsequent updates, outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance. ASU 2014-09 is based on the principle that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  ASU 2014-09 also provides for enhanced disclosure requirements surrounding revenue recognition. 

Prior to the adoption of ASU 2014-09, revenue on a significant portion of our contracts had been recognized at the time of shipment of goods, transfer of title and customer acceptance, as required. Our revenue transactions generally consist of a single performance obligation to transfer promised goods and are not accounted for under industry-specific guidance. We have retained much of the same accounting treatment used to recognize revenue under the prior standard. However, the adoption of ASU 2014-09 required us to accelerate the recognition of revenue as compared to the prior standard for certain customers, in cases where we produce products unique to those customers, and for which we would have an enforceable right of payment, inclusive of profit, for production completed to date.

We adopted ASU 2014-09 on January 1, 2018 using the modified retrospective method, which required the recognition of the cumulative effect of the transition as an adjustment to retained earnings. The Company elected to apply the standard only to open contracts as of January 1, 2018. Based on the application of the changes described above, we recognized a transition adjustment of $3.3 million, net of tax effects, which increased our January 1, 2018 retained earnings. Based on our existing operations, ASU 2014-09 is not expected to have a material impact to net earnings for the year ended December 31, 2018. Refer to Note 2 for additional information.

During the first quarter of 2018, the Company early-adopted ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows for a reclassification from accumulated other comprehensive income (loss) to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. The Company applied the guidance as of the beginning of the period of adoption and reclassified approximately $1.4 million from accumulated other comprehensive loss to retained earnings due to the change in federal corporate tax rate.

In February 2016, the FASB issued ASU No. 2016-02, Leases. The new standard is effective for reporting periods beginning after December 15, 2018. Early adoption is permitted. The standard will require lessees to report most leases as assets and liabilities on the balance sheet, while lessor accounting will remain substantially unchanged. The standard requires a modified retrospective transition approach for existing leases, whereby the new rules will be applied to the earliest year presented. The Company is currently evaluating the impact of ASU 2016-02 on our financial statements.

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfer of Assets Other Than Inventory, which requires entities to recognize income tax consequences of intra-entity transfers of assets, other than inventory, when the transfer occurs rather than when the asset is sold to a third party as is the case under current GAAP. The Company adopted ASU 2016-16 effective January 1, 2018, and such adoption did not have a material impact on the consolidated financial statements

In January 2017, the FASB issued ASU No. 2017-01, Clarifying the Definition of a Business, which narrows the existing definition of a business and provides a framework for evaluating whether a transaction should be accounted for as an acquisition (or disposal) of assets or a business. The ASU requires an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets; if so, the set of transferred assets and activities (collectively, the set) is not a business. To be considered a business, the set would need to include an input and a substantive process that together significantly contribute to the ability to create outputs. The standard also narrows the definition of outputs. The definition of a business affects areas of accounting such as acquisitions, disposals and goodwill. Under the new guidance, fewer acquired sets are expected to be considered businesses. The Company adopted ASU 2017-01 effective January 1, 2018. The Company will apply this guidance to applicable transactions after the adoption date on a prospective basis. No applicable transactions have occurred as of June 30, 2018.

In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. This ASU changes how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. This ASU was adopted as of January 1, 2018 on a retrospective basis. Under the new standard, only the service cost component of net periodic benefit cost would be included in operating expenses. All other net periodic benefit costs components (such as interest cost, prior service cost amortization and actuarial gain/loss amortization) would be reported outside of operating income. These include components totaling $0.5 million and $0.4 million for the three months ended and $1.0 million and $0.9 million for the six months ended June 30, 2018 and July 1, 2017, respectively, that no longer are included within Selling, General and Administrative Expenses and instead are reported outside of income from operations, within Other Expense, Net of Other Income in our Consolidated Statements of Operations.

In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting, that clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as a modification. The general model for accounting for modifications of share-based payment awards is to record the incremental value arising from the changes as additional compensation cost. Under the new standard, fewer changes to the terms of an award would require accounting under this modification model. This ASU was adopted as of January 1, 2018. As the Company has not made changes to the terms or conditions of its issued share-based payment awards, this ASU had no impact on our consolidated results of operations and financial condition.

Fair Value

Fair Value

A fair value measurement assumes that the transaction to sell an asset or transfer a liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. Fair value is based upon an exit price model. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and involves consideration of factors specific to the asset or liability.

The Company follows a valuation hierarchy for disclosure of the inputs to valuation used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows:

Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities.

Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.

Level 3 inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value.

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Revenue (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Impact of Adoption of Standards Related to Revenue Recognition and Leases

The cumulative effect of the changes made to our consolidated January 1, 2018 balance sheet for the adoption of  ASU 2014-09, were as follows (in thousands):

Balance Sheet	Balance at December 31, 2017		Adjustments Due to ASU 2014-09			Balance at January 1, 2018
Assets
Accounts Receivable, Net of Allowance for Doubtful Accounts	$	132,633	$	4,005		$	136,638
Inventories	$	150,196	$	(7,957	)	$	142,239
Liabilities
Accrued Income Taxes	$	261	$	1,028		$	1,289
Customer Advance Payments and Deferred Revenue	$	19,607	$	(8,176	)	$	11,431
Deferred Income Taxes	$	5,121	$	(72	)	$	5,049
Equity
Retained Earnings	$	325,191	$	3,268		$	328,459

In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on our consolidated income statement and balance sheet was as follows (in thousands):

	For the Six Months Ended June 30, 2018							For the Three Months Ended June 30, 2018
Income Statement	As Reported		Effect of Change Higher/(Lower)			Balances Without Adoption of ASU 2014-09		As Reported		Effect of Change Higher/(Lower)			Balances Without Adoption of ASU 2014-09
Revenues
Aerospace	$	330,804	$	(771	)	$	331,575	$	166,204	$	(1,429	)	$	167,633
Test Systems	$	56,861	$	(575	)	$	57,436	$	42,402	$	(2,536	)	$	44,938
Costs and Expenses
Cost of Products Sold	$	300,961	$	(1,467	)	$	302,428	$	159,034	$	(2,814	)	$	161,848
Provision for Income Taxes	$	3,789	$	21		$	3,768	$	3,157	$	(272	)	$	3,429
Net Income	$	17,319	$	100		$	17,219	$	14,025	$	(879	)	$	14,904

	June 30, 2018
Balance Sheet	As Reported		Effect of Change Higher/(Lower)			Balances Without Adoption of ASU 2014-09
Assets
Accounts Receivable, Net of Allowance for Doubtful Accounts	$	169,496	$	6,330		$	163,166
Inventories	$	159,479	$	(6,490	)	$	165,969
Liabilities
Accrued Expenses and Other Current Liabilities	$	38,590	$	1,295		$	37,295
Customer Advance Payments and Deferred Revenue	$	25,429	$	(4,505	)	$	29,934
Other Liabilities	$	34,189	$	(318	)	$	34,507
Equity
Other Shareholders' Equity	$	366,859	$	3,368		$	363,491

Summary of Contract Assets and Liabilities

The following table presents the beginning and ending balances of contract assets and contract liabilities during the six months ended June 30, 2018 (in thousands):

	Contract Assets		Contract Liabilities
Beginning Balance, January 1, 2018 (1)	$	24,423	$	11,431
Ending Balance, June 30, 2018	$	20,672	$	25,429
(1) Due to the adoption of ASU 2014-09 effective January 1, 2018, the Company recorded a transition adjustment to the opening balance of Contract Assets and Contract Liabilities at January 1, 2018. Refer to the cumulative effect of the changes table above for further explanation of the changes made to our consolidated January 1, 2018 balance sheet.

Disaggregation of Revenue

The following table presents our revenue disaggregated by Market Segments (in thousands):

	Six Months Ended				Three Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Aerospace Segment
Commercial Transport	$	265,847	$	208,079	$	132,797	$	98,355
Military	30,285		30,931		16,270		15,785
Business Jet	21,002		18,251		10,338		10,716
Other	13,670		9,113		6,799		4,691
Aerospace Total	330,804		266,374		166,204		129,547
Test Systems Segment
Semiconductor	38,465		11,711		31,405		7,080
Aerospace & Defense	18,396		25,425		10,997		14,487
Test Systems Total	56,861		37,136		42,402		21,567
Total	$	387,665	$	303,510	$	208,606	$	151,114

The following table presents our revenue disaggregated by Product Lines (in thousands):

	Six Months Ended				Three Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Aerospace Segment
Electrical Power & Motion	$	140,321	$	135,040	$	67,643	$	62,597
Lighting & Safety	85,763		85,316		44,121		42,646
Avionics	69,295		20,076		36,272		10,940
Systems Certification	9,655		4,952		4,872		2,793
Structures	12,100		11,877		6,497		5,880
Other	13,670		9,113		6,799		4,691
Aerospace Total	330,804		266,374		166,204		129,547
Test Systems	56,861		37,136		42,402		21,567
Total	$	387,665	$	303,510	$	208,606	$	151,114

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Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Summary of Inventories

(In thousands)	June 30, 2018		December 31, 2017
Finished Goods	$	29,276	$	35,193
Work in Progress	40,560		33,219
Raw Material	89,643		81,784
	$	159,479	$	150,196

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Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2018

Property, Plant and Equipment [Abstract]

Summary of Property, Plant and Equipment

The following table summarizes Property, Plant and Equipment as follows:

(In thousands)	June 30, 2018		December 31, 2017
Land	$	11,212	$	11,237
Buildings and Improvements	82,000		81,872
Machinery and Equipment	105,991		105,827
Construction in Progress	8,356		9,761
	207,559		208,697
Less Accumulated Depreciation	82,863		82,867
	$	124,696	$	125,830

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Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Acquired Intangible Assets

The following table summarizes acquired intangible assets as follows:

		June 30, 2018				December 31, 2017
(In thousands)	Weighted Average Life	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Patents	11 Years	$	2,146	$	1,672	$	2,146	$	1,629
Non-compete Agreement	4 Years	10,900		3,184		10,900		1,687
Trade Names	10 Years	11,471		4,648		11,492		4,114
Completed and Unpatented Technology	10 Years	38,078		13,945		38,114		11,931
Backlog	2 Years	14,424		14,424		14,424		12,184
Customer Relationships	15 Years	137,902		34,504		137,967		30,005
Total Intangible Assets	12 Years	$	214,921	$	72,377	$	215,043	$	61,550

Summary of Amortization Expense for Acquired Intangibles

All acquired intangible assets other than goodwill and one trade name are being amortized. Amortization expense for acquired intangibles is summarized as follows:

	Six Months Ended				Three Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Amortization Expense	$	10,868	$	5,340	$	4,867	$	2,722

Summary of Amortization Expense for Intangible Assets for Each of Next Five Years

Amortization expense for acquired intangible assets expected for 2018 and for each of the next five years is summarized as follows:

(In thousands)
2018	$	19,384
2019	16,700
2020	15,975
2021	14,065
2022	13,631
2023	12,463

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Goodwill (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amount of Goodwill

The following table summarizes the changes in the carrying amount of goodwill for the six months ended June 30, 2018:

(In thousands)	December 31, 2017		Acquisition/Adjustments			Foreign Currency Translation			June 30, 2018
Aerospace	$	125,645	$	(141	)	$	(267	)	$	125,237
Test Systems	—		—			—			—
	$	125,645	$	(141	)	$	(267	)	$	125,237

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Product Warranties (Tables)

6 Months Ended

Jun. 30, 2018

Product Warranties Disclosures [Abstract]

Summary of Activity in Warranty Accrual

Activity in the warranty accrual is summarized as follows: 

	Six Months Ended						Three Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Balance at Beginning of Period	$	5,136		$	4,675		$	5,115		$	4,357
Acquisitions	—			359			—			359
Warranties Issued	1,301			832			734			365
Warranties Settled	(1,285		)	(1,224		)	(645		)	(517		)
Reassessed Warranty Exposure	28			(5		)	(24		)	73
Balance at End of Period	$	5,180		$	4,637		$	5,180		$	4,637

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Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Summary of Changes in Shareholder's Equity

The changes in shareholders’ equity for the six months ended June 30, 2018 are summarized as follows:

				Number of Shares
(Dollars and Shares in thousands)	Amount			Common Stock			Convertible Class B Stock
Shares Authorized				40,000			15,000
Share Par Value				$	0.01		$	0.01
COMMON STOCK
Beginning of Period	$	297		22,861			6,852
Conversion of Class B Shares to Common Shares	—			332			(332		)
Exercise of Stock Options	1			26			38
End of Period	$	298		23,219			6,558
ADDITIONAL PAID IN CAPITAL
Beginning of Period	$	67,791
Stock Compensation Expense	1,637
Exercise of Stock Options	280
End of Period	$	69,708
ACCUMULATED OTHER COMPREHENSIVE LOSS
Beginning of Period	$	(13,352	)
Adoption of ASU 2018-02	(1,373		)
Foreign Currency Translation Adjustment	(1,572		)
Retirement Liability Adjustment – Net of Tax	430
End of Period	$	(15,867	)
RETAINED EARNINGS
Beginning of Period	$	325,191
Adoption of ASU 2014-09	3,268
Adoption of ASU 2018-02	1,373
Net Income	17,319
End of Period	$	347,151
TREASURY STOCK
Beginning of Period	$	(50,000	)	(1,675		)
Purchase	—			—
End of Period	$	(50,000	)	(1,675		)
TOTAL SHAREHOLDERS’ EQUITY
Beginning of Period	$	329,927
End of Period	$	351,290		21,544			6,558

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Summary of Basic and Diluted Weighted-Average Shares Outstanding

Basic and diluted weighted-average shares outstanding are as follows:

	Six Months Ended		Three Months Ended
(In thousands)	June 30, 2018	July 1, 2017	June 30, 2018	July 1, 2017
Weighted Average Shares - Basic	28,085	29,007	28,098	28,911
Net Effect of Dilutive Stock Options	670	1,128	704	1,178
Weighted Average Shares - Diluted	28,755	30,135	28,802	30,089

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Accumulated Other Comprehensive Loss and Other Comprehensive Income (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Components of Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss are as follows:

(In thousands)	June 30, 2018			December 31, 2017
Foreign Currency Translation Adjustments	$	(6,037	)	$	(4,465	)
Retirement Liability Adjustment – Before Tax	(12,443		)	(12,988		)
Tax Benefit of Retirement Liability Adjustment	3,986			4,101
Adoption of ASU 2018-02	(1,373		)	—
Retirement Liability Adjustment – After Tax	(9,830		)	(8,887		)
Accumulated Other Comprehensive Loss	$	(15,867	)	$	(13,352	)

Components of Other Comprehensive Income

The components of other comprehensive (loss) income are as follows:

	Six Months Ended						Three Months Ended
(In thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Foreign Currency Translation Adjustments	$	(1,572	)	$	2,491		$	(1,805	)	$	2,096
Retirement Liability Adjustments:
Reclassifications to General and Administrative Expense:
Amortization of Prior Service Cost	202			202			101			102
Amortization of Net Actuarial Losses	343			201			172			99
Tax Benefit	(115		)	(141		)	(58		)	(70		)
Retirement Liability Adjustment	430			262			215			131
Other Comprehensive (Loss) Income	$	(1,142	)	$	2,753		$	(1,590	)	$	2,227

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Supplemental Retirement Plan and Related Post Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

Summary of the Components of Net Periodic Cost

The following table sets forth information regarding the net periodic pension cost for the plans.

	Six Months Ended				Three Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Service Cost	$	100	$	92	$	50	$	46
Interest Cost	450		448		225		224
Amortization of Prior Service Cost	194		194		97		97
Amortization of Net Actuarial Losses	314		186		157		93
Net Periodic Cost	$	1,058	$	920	$	529	$	460

Participants in the SERP are entitled to paid medical, dental and long-term care insurance benefits upon retirement under the plan. The following table sets forth information regarding the net periodic cost recognized for those benefits:

	Six Months Ended				Three Months Ended
(In thousands)	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Service Cost	$	8	$	4	$	4	$	2
Interest Cost	23		20		12		10
Amortization of Prior Service Cost	8		8		4		5
Amortization of Net Actuarial Losses	29		15		15		6
Net Periodic Cost	$	68	$	47	$	35	$	23

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Segment Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Summary of Segment Reporting Information

Below are the sales and operating profit by segment for the six months ended June 30, 2018 and July 1, 2017 and a reconciliation of segment operating profit to income before income taxes. Operating profit is net sales less cost of products sold and other operating expenses excluding interest and corporate expenses. Cost of products sold and other operating expenses are directly identifiable to the respective segment.

	Six Months Ended						Three Months Ended
(Dollars in thousands)	June 30, 2018			July 1, 2017			June 30, 2018			July 1, 2017
Sales
Aerospace	$	330,857		$	266,374		$	166,257		$	129,547
Less Intersegment Sales	(53		)	—			(53		)	—
Total Aerospace Sales	330,804			266,374			166,204			129,547
Test Systems	56,861			37,136			$	42,402		$	21,567
Total Consolidated Sales	$	387,665		$	303,510		$	208,606		$	151,114
Operating Profit and Margins
Aerospace	$	31,315		$	33,738		$	18,200		$	13,984
	9.5		%	12.7		%	11.0		%	10.8		%
Test Systems	4,318			1,750			6,247			1,432
	7.6		%	4.7		%	14.7		%	6.6		%
Total Operating Profit	35,633			35,488			24,447			15,416
	9.2		%	11.7		%	11.7		%	10.2		%
Deductions from Operating Profit
Interest Expense, Net of Interest Income	4,815			2,313			2,484			1,180
Corporate Expenses and Other	9,710			7,115			4,781			3,667
Income Before Income Taxes	$	21,108		$	26,060		$	17,182		$	10,569

Total Assets:

(In thousands)	June 30, 2018		December 31, 2017
Aerospace	$	632,365	$	621,047
Test Systems	110,903		90,859
Corporate	21,155		24,050
Total Assets	$	764,423	$	735,956

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Acquisitions Acquisitions (Tables)

6 Months Ended

Jun. 30, 2018

Business Combinations [Abstract]

Summary of Pro Forma Results

The following summary, prepared on a pro forma basis, combines the consolidated results of operations of the Company with those of CSC as if the acquisition took place on January 1, 2017. The pro forma consolidated results include the impact of certain adjustments, including increased interest expense on acquisition debt, amortization of purchased intangible assets and income taxes.

Unaudited	Six Months Ended				Three Months Ended
(in thousands, except earnings per share)	July 1, 2017 as reported		July 1, 2017 Pro Forma		July 1, 2017 as reported		July 1, 2017 Pro Forma
Sales	$	303,510	$	333,169	$	151,114	$	168,565
Net income	$	19,272	$	18,232	$	7,685	$	7,880
Basic earnings per share	$	0.66	$	0.63	$	0.27	$	0.27
Diluted earnings per share	$	0.64	$	0.61	$	0.26	$	0.26

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Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Jan. 01, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Research and development, design and related engineering	$ 28,900		$ 23,000	$ 57,800	$ 45,800
Capitalized precontract cost	9,500			9,500
Adoption of ASU 2018-02		$ 1,400
ACCUMULATED OTHER COMPREHENSIVE LOSS
Business Acquisition [Line Items]
Adoption of ASU 2018-02				(1,373)
RETAINED EARNINGS
Business Acquisition [Line Items]
Adoption of ASU 2018-02				1,373
Accounting Standards Update 2014-09 | RETAINED EARNINGS
Business Acquisition [Line Items]
Adoption of ASU 2014-09						$ 3,300	$ 3,268
Selling, General and Administrative Expenses | Accounting Standards Update 2017-07
Business Acquisition [Line Items]
Other net periodic benefit costs	500		400	1,000	900
Other Expense | Accounting Standards Update 2017-07
Business Acquisition [Line Items]
Other net periodic benefit costs	$ (500)		$ (400)	$ (1,000)	$ (900)

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Revenue - Cumulative Effect of Changes (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts Receivable, Net of Allowance for Doubtful Accounts	$ 169,496	$ 136,638	$ 132,633
Inventories	159,479	142,239	150,196
Accrued Income Taxes		1,289
Contract Liabilities	25,429	11,431	19,607
Deferred Income Taxes		5,049
Retained Earnings		328,459
Calculated under Revenue Guidance in Effect before Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts Receivable, Net of Allowance for Doubtful Accounts	163,166		132,633
Inventories	165,969		150,196
Accrued Income Taxes			261
Contract Liabilities	29,934		19,607
Deferred Income Taxes			5,121
Retained Earnings			$ 325,191
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts Receivable, Net of Allowance for Doubtful Accounts	6,330	4,005
Inventories	(6,490)	(7,957)
Accrued Income Taxes		1,028
Contract Liabilities	$ (4,505)	(8,176)
Deferred Income Taxes		(72)
Retained Earnings		$ 3,268

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Revenue - Impact on Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Jan. 01, 2018	Dec. 31, 2017
Income Statement
Revenues	$ 208,606	$ 151,114	$ 387,665	$ 303,510
Cost of Products Sold	159,034	116,964	300,961	231,043
Provision for Income Taxes	3,157	2,884	3,789	6,788
Net Income	14,025	7,685	17,319	19,272
Balance Sheet
Accounts Receivable, Net of Allowance for Doubtful Accounts	169,496		169,496		$ 136,638	$ 132,633
Inventories	159,479		159,479		142,239	150,196
Accrued Expenses and Other Current Liabilities	38,590		38,590			38,749
Contract Liabilities	25,429		25,429		11,431	19,607
Other Liabilities	34,189		34,189			34,060
Other Shareholders’ Equity	366,859		366,859			342,982
Calculated under Revenue Guidance in Effect before Topic 606
Income Statement
Cost of Products Sold	161,848		302,428
Provision for Income Taxes	3,429		3,768
Net Income	14,904		17,219
Balance Sheet
Accounts Receivable, Net of Allowance for Doubtful Accounts	163,166		163,166			132,633
Inventories	165,969		165,969			150,196
Accrued Expenses and Other Current Liabilities	37,295		37,295
Contract Liabilities	29,934		29,934			$ 19,607
Other Liabilities	34,507		34,507
Other Shareholders’ Equity	363,491		363,491
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
Income Statement
Cost of Products Sold	(2,814)		(1,467)
Provision for Income Taxes	(272)		21
Net Income	(879)		100
Balance Sheet
Accounts Receivable, Net of Allowance for Doubtful Accounts	6,330		6,330		4,005
Inventories	(6,490)		(6,490)		(7,957)
Accrued Expenses and Other Current Liabilities	1,295		1,295
Contract Liabilities	(4,505)		(4,505)		$ (8,176)
Other Liabilities	(318)		(318)
Other Shareholders’ Equity	3,368		3,368
Aerospace
Income Statement
Revenues	166,204	129,547	330,804	266,374
Aerospace | Calculated under Revenue Guidance in Effect before Topic 606
Income Statement
Revenues	167,633		331,575
Aerospace | Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
Income Statement
Revenues	(1,429)		(771)
Test Systems
Income Statement
Revenues	42,402	$ 21,567	56,861	$ 37,136
Test Systems | Calculated under Revenue Guidance in Effect before Topic 606
Income Statement
Revenues	44,938		57,436
Test Systems | Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
Income Statement
Revenues	$ (2,536)		$ (575)

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Revenue - Narrative (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized included in contract liability balance	$ 8.4	$ 11.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	376.9	$ 376.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Period of recognition		6 months
Remaining performance obligation	$ 309.1	$ 309.1

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Revenue - Summary of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Contract Assets	$ 20,672	$ 24,423
Contract Liabilities	$ 25,429	$ 11,431	$ 19,607

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Revenue - Disaggregated Revenue by Market (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 208,606	$ 151,114	$ 387,665	$ 303,510
Commercial Transport
Disaggregation of Revenue [Line Items]
Revenues	132,797	98,355	265,847	208,079
Military Aircraft
Disaggregation of Revenue [Line Items]
Revenues	16,270	15,785	30,285	30,931
Business Jet
Disaggregation of Revenue [Line Items]
Revenues	10,338	10,716	21,002	18,251
Other
Disaggregation of Revenue [Line Items]
Revenues	6,799	4,691	13,670	9,113
Aerospace
Disaggregation of Revenue [Line Items]
Revenues	166,204	129,547	330,804	266,374
Semiconductor
Disaggregation of Revenue [Line Items]
Revenues	31,405	7,080	38,465	11,711
Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenues	10,997	14,487	18,396	25,425
Test Systems
Disaggregation of Revenue [Line Items]
Revenues	$ 42,402	$ 21,567	$ 56,861	$ 37,136

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Revenue - Disaggregated Revenue by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 208,606	$ 151,114	$ 387,665	$ 303,510
Aerospace
Disaggregation of Revenue [Line Items]
Revenues	166,204	129,547	330,804	266,374
Test Systems
Disaggregation of Revenue [Line Items]
Revenues	42,402	21,567	56,861	37,136
Electrical Power & Motion
Disaggregation of Revenue [Line Items]
Revenues	67,643	62,597	140,321	135,040
Lighting & Safety
Disaggregation of Revenue [Line Items]
Revenues	44,121	42,646	85,763	85,316
Avionics
Disaggregation of Revenue [Line Items]
Revenues	36,272	10,940	69,295	20,076
Systems Certification
Disaggregation of Revenue [Line Items]
Revenues	4,872	2,793	9,655	4,952
Structures
Disaggregation of Revenue [Line Items]
Revenues	6,497	5,880	12,100	11,877
Other
Disaggregation of Revenue [Line Items]
Revenues	$ 6,799	$ 4,691	$ 13,670	$ 9,113

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Inventories - Summary of Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Finished Goods	$ 29,276		$ 35,193
Work in Progress	40,560		33,219
Raw Material	89,643		81,784
Inventory, net	$ 159,479	$ 142,239	$ 150,196

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Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment
Property, plant and equipment, gross	$ 207,559	$ 208,697
Less Accumulated Depreciation	82,863	82,867
Property, plant and equipment, net	124,696	125,830
Land
Property, Plant and Equipment
Property, plant and equipment, gross	11,212	11,237
Buildings and Improvements
Property, Plant and Equipment
Property, plant and equipment, gross	82,000	81,872
Machinery and Equipment
Property, Plant and Equipment
Property, plant and equipment, gross	105,991	105,827
Construction in Progress
Property, Plant and Equipment
Property, plant and equipment, gross	$ 8,356	$ 9,761

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Intangible Assets - Summary of Acquired Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets
Weighted Average Life	12 years
Gross Carrying Amount	$ 214,921	$ 215,043
Accumulated Amortization	$ 72,377	61,550
Patents
Finite-Lived Intangible Assets
Weighted Average Life	11 years
Gross Carrying Amount	$ 2,146	2,146
Accumulated Amortization	$ 1,672	1,629
Non-compete Agreement
Finite-Lived Intangible Assets
Weighted Average Life	4 years
Gross Carrying Amount	$ 10,900	10,900
Accumulated Amortization	$ 3,184	1,687
Trade Names
Finite-Lived Intangible Assets
Weighted Average Life	10 years
Gross Carrying Amount	$ 11,471	11,492
Accumulated Amortization	$ 4,648	4,114
Completed and Unpatented Technology
Finite-Lived Intangible Assets
Weighted Average Life	10 years
Gross Carrying Amount	$ 38,078	38,114
Accumulated Amortization	$ 13,945	11,931
Backlog
Finite-Lived Intangible Assets
Weighted Average Life	2 years
Gross Carrying Amount	$ 14,424	14,424
Accumulated Amortization	$ 14,424	12,184
Customer Relationships
Finite-Lived Intangible Assets
Weighted Average Life	15 years
Gross Carrying Amount	$ 137,902	137,967
Accumulated Amortization	$ 34,504	$ 30,005

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Intangible Assets - Summary of Amortization Expense for Acquired Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization Expense	$ 4,867	$ 2,722	$ 10,868	$ 5,340

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Intangible Assets - Summary of Amortization Expense for Intangible Assets for Each of Next Five Years (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2018	$ 19,384
2019	16,700
2020	15,975
2021	14,065
2022	13,631
2023	$ 12,463

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Goodwill - Summary of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 125,645
Acquisition/Adjustments	(141)
Foreign Currency Translation	(267)
Balance at end of period	125,237
Operating Segments | Aerospace
Goodwill [Roll Forward]
Balance at beginning of period	125,645
Acquisition/Adjustments	(141)
Foreign Currency Translation	(267)
Balance at end of period	125,237
Operating Segments | Test Systems
Goodwill [Roll Forward]
Balance at beginning of period	0
Acquisition/Adjustments	0
Foreign Currency Translation	0
Balance at end of period	$ 0

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Long-Term Debt and Notes Payable (Details)	6 Months Ended
	Jun. 30, 2018 USD ($) fiscal_quarter
Debt Instrument
Duration of permitted leverage ratio following acquisition, number of fiscal quarters | fiscal_quarter	4
Leverage ratio	2.80
Fourth Amended and Restated Credit Agreement | Line of Credit | Revolving Credit Facility
Debt Instrument
Maximum borrowing capacity	$ 350,000,000
Line of credit facility increase amount	$ 150,000,000
Amended and Restated Credit Agreement
Debt Instrument
Ratio of funded debt to Adjusted EBITDA	3.75
Amended and Restated Credit Agreement | Maximum
Debt Instrument
Ratio of funded debt to Adjusted EBITDA	4.50
Amended and Restated Credit Agreement | Line of Credit | Revolving Credit Facility
Debt Instrument
Maximum borrowing capacity	$ 500,000,000
Line of credit facility increase amount	150,000,000
Credit facility outstanding	257,000,000
Revolving credit facility remaining	$ 241,900,000
Amended and Restated Credit Agreement | Line of Credit | Revolving Credit Facility | Minimum
Debt Instrument
Basis points for commitment fee	0.10%
Amended and Restated Credit Agreement | Line of Credit | Revolving Credit Facility | Minimum | LIBOR
Debt Instrument
Basis points for variable interest rate	1.00%
Amended and Restated Credit Agreement | Line of Credit | Revolving Credit Facility | Maximum
Debt Instrument
Basis points for commitment fee	0.20%
Amended and Restated Credit Agreement | Line of Credit | Revolving Credit Facility | Maximum | LIBOR
Debt Instrument
Basis points for variable interest rate	1.50%
Amended and Restated Credit Agreement | Line of Credit | Letter of Credit
Debt Instrument
Credit facility allocated (up to)	$ 20,000,000
Outstanding letters of credit	$ 1,100,000

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Product Warranties - Summary of Activity in Warranty Accrual (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at Beginning of Period	$ 5,115	$ 4,357	$ 5,136	$ 4,675
Acquisitions	0	359	0	359
Warranties Issued	734	365	1,301	832
Warranties Settled	(645)	(517)	(1,285)	(1,224)
Reassessed Warranty Exposure	(24)	73	28	(5)
Balance at End of Period	$ 5,180	$ 4,637	$ 5,180	$ 4,637
Minimum
Product Liability Contingency [Line Items]
Product warranty period			12 months
Maximum
Product Liability Contingency [Line Items]
Product warranty period			60 months

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Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Income Tax Disclosure [Abstract]
Effective tax rate	18.40%	27.30%	18.00%	26.00%
Effective income tax rate reconciliation, foreign-derived intangible income deduction, percent	0.20%		0.30%

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Shareholders' Equity - Summary of Changes in Shareholders' Equity (Details) - USD ($)		3 Months Ended			6 Months Ended		25 Months Ended
	Dec. 12, 2017	Jun. 30, 2018	Mar. 31, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of Period			$ 329,927,000		$ 329,927,000
Adoption of ASU 2018-02			1,400,000
Foreign Currency Translation Adjustment		$ (1,805,000)		$ 2,096,000	(1,572,000)	$ 2,491,000
Retirement Liability Adjustment – Net of Tax		215,000		131,000	430,000	262,000
Net Income		14,025,000		$ 7,685,000	17,319,000	$ 19,272,000
End of Period		$ 351,290,000			$ 351,290,000
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
End of Period (in shares)		21,544,000			21,544,000
Convertible Class B Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
End of Period (in shares)		6,558,000			6,558,000
COMMON STOCK
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of Period			$ 297,000		$ 297,000
Conversion of Class B Shares to Common Shares					0
Exercise of Stock Options					1,000
End of Period		$ 298,000			$ 298,000
COMMON STOCK | Common Stock
Class of Stock [Line Items]
Shares Authorized (in shares)		40,000,000			40,000,000
Share Par Value (in usd per share)		$ 0.01			$ 0.01
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of Period (in shares)			22,861,000		22,861,000
Conversion of Class B Shares to Common Shares (in shares)					332,000
Exercise of Stock Options (in shares)					26,000
End of Period (in shares)		23,219,000			23,219,000
COMMON STOCK | Convertible Class B Stock
Class of Stock [Line Items]
Shares Authorized (in shares)		15,000,000			15,000,000
Share Par Value (in usd per share)		$ 0.01			$ 0.01
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of Period (in shares)			6,852,000		6,852,000
Conversion of Class B Shares to Common Shares (in shares)					(332,000)
Exercise of Stock Options (in shares)					38,000
End of Period (in shares)		6,558,000			6,558,000
ADDITIONAL PAID IN CAPITAL
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of Period			$ 67,791,000		$ 67,791,000
Exercise of Stock Options					280,000
Stock Compensation Expense					1,637,000
End of Period		$ 69,708,000			69,708,000
ACCUMULATED OTHER COMPREHENSIVE LOSS
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of Period			(13,352,000)		(13,352,000)
Adoption of ASU 2018-02					(1,373,000)
Foreign Currency Translation Adjustment					(1,572,000)
Retirement Liability Adjustment – Net of Tax					430,000
End of Period		(15,867,000)			(15,867,000)
RETAINED EARNINGS
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of Period			325,191,000		325,191,000
Adoption of ASU 2018-02					1,373,000
Net Income					17,319,000
End of Period		347,151,000			347,151,000
RETAINED EARNINGS | Accounting Standards Update 2014-09
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASU 2014-09								$ 3,300,000	$ 3,268,000
TREASURY STOCK
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of Period			$ (50,000,000)		$ (50,000,000)
Beginning of Period (in shares)			(1,675,000)		(1,675,000)
Purchase	$ (50,000,000)				$ 0
Purchase (in shares)					0		1,675,000
End of Period		$ (50,000,000)			$ (50,000,000)
End of Period (in shares)		(1,675,000)			(1,675,000)

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Shareholders' Equity (Details) - USD ($)		6 Months Ended	25 Months Ended
	Dec. 12, 2017	Jun. 30, 2018	Mar. 31, 2018	Feb. 24, 2016
Class of Stock [Line Items]
Authorized repurchase of common stock, amount				$ 50,000,000
Treasury Stock
Class of Stock [Line Items]
Number of shares repurchased (in shares)		0	1,675,000
Repurchase of shares	$ 50,000,000	$ 0

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Earnings Per Share - Summary of Basic and Diluted Weighted-Average Shares Outstanding (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Earnings Per Share [Abstract]
Weighted Average Shares - Basic (in shares)	28,098	28,911	28,085	29,007
Net Effect of Dilutive Stock Options (in shares)	704	1,178	670	1,128
Weighted Average Shares - Diluted (in shares)	28,802	30,089	28,755	30,135
Out-of-the-money stock options			139

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Accumulated Other Comprehensive Loss and Other Comprehensive Income - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2018	Jun. 30, 2018	Jul. 01, 2017	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total Shareholders’ Equity		$ 351,290		$ 329,927
Adoption of ASU 2018-02	$ 1,400
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total Shareholders’ Equity		(6,037)		(4,465)
Retirement Liability Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total Shareholders’ Equity		(9,830)		(8,887)
Retirement Liability Adjustment – Before Tax		(12,443)		(12,988)
Tax Benefit of Retirement Liability Adjustment		3,986		4,101
Adoption of ASU 2018-02		(1,373)	$ 0
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total Shareholders’ Equity		(15,867)		$ (13,352)
Adoption of ASU 2018-02		$ (1,373)

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Accumulated Other Comprehensive Loss and Other Comprehensive Income - Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income	$ (1,590)	$ 2,227	$ (1,142)	$ 2,753
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income	(1,805)	2,096	(1,572)	2,491
Amortization of Prior Service Cost
Reclassifications to General and Administrative Expense:
Reclassifications to General and Administrative Expense	101	102	202	202
Amortization of Net Actuarial Losses
Reclassifications to General and Administrative Expense:
Reclassifications to General and Administrative Expense	172	99	343	201
Retirement Liability Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income	215	131	430	262
Reclassifications to General and Administrative Expense:
Tax Benefit	$ (58)	$ (70)	$ (115)	$ (141)

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Supplemental Retirement Plan and Related Post Retirement Benefits - Summary of the Components of Net Periodic Cost (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jul. 01, 2017 USD ($)	Jun. 30, 2018 USD ($) retirement_plan	Jul. 01, 2017 USD ($)
Retirement Benefits [Abstract]
Number of non-qualified supplemental retirement defined benefit plans | retirement_plan			2
SERP
Defined Benefit Plan Disclosure
Service Cost	$ 50	$ 46	$ 100	$ 92
Interest Cost	225	224	450	448
Amortization of Prior Service Cost	97	97	194	194
Amortization of Net Actuarial Losses	157	93	314	186
Net Periodic Cost	529	460	1,058	920
SERP | SERP Medical
Defined Benefit Plan Disclosure
Service Cost	4	2	8	4
Interest Cost	12	10	23	20
Amortization of Prior Service Cost	4	5	8	8
Amortization of Net Actuarial Losses	15	6	29	15
Net Periodic Cost	$ 35	$ 23	$ 68	$ 47

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Sales to Major Customers (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jul. 01, 2017	Jun. 30, 2018 USD ($) customer	Jul. 01, 2017 customer
Segment Reporting, Asset Reconciling Item
Number of major customers | customer			2	2
Sales Revenue, Net | Customer Concentration Risk | Major Customer One
Segment Reporting, Asset Reconciling Item
Percent of consolidated revenue	12.00%	16.00%	16.00%	20.00%
Sales Revenue, Net | Customer Concentration Risk | Major Customer Two
Segment Reporting, Asset Reconciling Item
Percent of consolidated revenue	14.00%	18.00%	15.00%	18.00%
Sales Revenue, Net | Customer Concentration Risk | Two Major Customers
Segment Reporting, Asset Reconciling Item
Accounts receivable from major customers | $	$ 31.5		$ 31.5

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Legal Proceedings Legal Proceedings (Details) - Germany - Lufthansa Technik AG $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($) product
Loss Contingencies [Line Items]
Number of products in distribution channels | product	0
Patent Infringement | AES
Loss Contingencies [Line Items]
Damages sought	$ 6.2
Recorded reserve	1.0
Patent Infringement | AES | Minimum
Loss Contingencies [Line Items]
Estimate of the value of the dispute	1.0
Patent Infringement | AES | Maximum
Loss Contingencies [Line Items]
Estimate of the value of the dispute	$ 3.0

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Segment Information - Summary of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 31, 2017
Segment Reporting Information
Revenues	$ 208,606	$ 151,114	$ 387,665	$ 303,510
Operating Profit and Margins
Total Operating Profit	20,129	12,059	26,761	28,993
Deductions from Operating Profit
Interest Expense, Net of Interest Income	2,484	1,180	4,815	2,313
Income Before Income Taxes	17,182	10,569	21,108	26,060
Total Assets	764,423		764,423		$ 735,956
Aerospace
Segment Reporting Information
Revenues	166,204	129,547	330,804	266,374
Test Systems
Segment Reporting Information
Revenues	42,402	21,567	56,861	37,136
Operating Segments
Operating Profit and Margins
Total Operating Profit	$ 24,447	$ 15,416	$ 35,633	$ 35,488
Operating margins, percentage	11.70%	10.20%	9.20%	11.70%
Operating Segments | Aerospace
Segment Reporting Information
Revenues	$ 166,257	$ 129,547	$ 330,857	$ 266,374
Operating Profit and Margins
Total Operating Profit	$ 18,200	$ 13,984	$ 31,315	$ 33,738
Operating margins, percentage	11.00%	10.80%	9.50%	12.70%
Deductions from Operating Profit
Total Assets	$ 632,365		$ 632,365		621,047
Operating Segments | Test Systems
Segment Reporting Information
Revenues	42,402	$ 21,567	56,861	$ 37,136
Operating Profit and Margins
Total Operating Profit	$ 6,247	$ 1,432	$ 4,318	$ 1,750
Operating margins, percentage	14.70%	6.60%	7.60%	4.70%
Deductions from Operating Profit
Total Assets	$ 110,903		$ 110,903		90,859
Less Intersegment Sales | Aerospace
Segment Reporting Information
Revenues	(53)	$ 0	(53)	$ 0
Corporate Expenses and Other
Deductions from Operating Profit
Corporate Expenses and Other	4,781	$ 3,667	9,710	$ 7,115
Total Assets	$ 21,155		$ 21,155		$ 24,050

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Fair Value - Financial Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Details) - Recurring Basis - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Financial assets carried at fair value	$ 0	$ 0
Financial liabilities carried at fair value	$ 0	$ 0

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Acquisitions - Narrative (Details) - USD ($) $ in Thousands			6 Months Ended
	Dec. 01, 2017	Apr. 03, 2017	Jun. 30, 2018	Jul. 01, 2017
Business Acquisition [Line Items]
Acquisition of Business, Net of Cash Acquired			$ 0	$ 10,223
Custom Control Concepts LLC | Astronics Custom Control Concepts Inc.
Business Acquisition [Line Items]
Acquisition of Business, Net of Cash Acquired		$ 10,200
Cash acquired		$ 500
Period goodwill and purchased intangible assets are expected to be deductible for tax purposes		15 years
Telefonix, Incorporated | Astronics Custom Control Concepts Inc.
Business Acquisition [Line Items]
Acquisition of Business, Net of Cash Acquired	$ 103,800
Cash acquired	$ 200
Period goodwill and purchased intangible assets are expected to be deductible for tax purposes	15 years

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Acquisitions - CSC Pro-forma Summary (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Business Acquisition [Line Items]
Revenues	$ 208,606	$ 151,114	$ 387,665	$ 303,510
Net Income	$ 14,025	$ 7,685	$ 17,319	$ 19,272
Basic (in usd per share)	$ 0.50	$ 0.27	$ 0.62	$ 0.66
Diluted (in usd per share)	$ 0.49	$ 0.26	$ 0.60	$ 0.64
Pro Forma
Business Acquisition [Line Items]
Revenues		$ 168,565		$ 333,169
Net Income		$ 7,880		$ 18,232
Basic (in usd per share)		$ 0.27		$ 0.63
Diluted (in usd per share)		$ 0.26		$ 0.61