Gibraltar Industries (ROCK) 10-K 23 Feb 22 2021 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Feb. 22, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	000-22462
Entity Registrant Name	GIBRALTAR INDUSTRIES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	16-1445150
Entity Address, Address Line One	3556 Lake Shore Road
Entity Address, Address Line Two	P.O. Box 2028
Entity Address, City or Town	Buffalo ,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	14219-0228
City Area Code	716
Local Phone Number	826-6500
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	ROCK
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 2.5
Entity Common Stock, Shares Outstanding		32,699,296
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the Registrant’s Definitive Proxy Statement to be filed for its 2022 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K.
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Central Index Key	0000912562

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2021
Audit Information [Abstract]
Auditor Name	Ernst & Young LLP
Auditor Location	Boston, Massachusetts
Auditor Firm ID	42

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales:	$ 1,339,783	$ 1,032,578	$ 898,233
Cost of sales	1,049,772	776,235	678,336
Gross profit	290,011	256,343	219,897
Selling, general, and administrative expense	184,723	149,153	139,085
Intangible asset impairment	8,300	0	0
Income from operations	96,988	107,190	80,812
Interest expense, net	1,639	703	2,323
Other (income) expense	(4,213)	(1,272)	408
Income before taxes	99,562	107,759	78,081
Provision for income taxes	25,046	24,468	18,153
Income from continuing operations	74,516	83,291	59,928
Discontinued operations:
Income (loss) before taxes	1,479	(16,602)	6,682
Provision for income taxes	366	2,123	1,519
Income (loss) from discontinued operations	1,113	(18,725)	5,163
Net income	$ 75,629	$ 64,566	$ 65,091
Net earnings per share – Basic:
Income from continuing operations (in dollars per share)	$ 2.27	$ 2.55	$ 1.85
(Loss) income from discontinued operations (in dollars per share)	0.03	(0.57)	0.16
Net income (in dollars per share)	$ 2.30	$ 1.98	$ 2.01
Weighted average shares outstanding – Basic (in shares)	32,873	32,664	32,389
Net earnings per share – Diluted:
Income from continuing operations (in dollars per share)	$ 2.25	$ 2.53	$ 1.83
(Loss) income from discontinued operations (in dollars per share)	0.04	(0.57)	0.16
Net income (in dollars per share)	$ 2.29	$ 1.96	$ 1.99
Weighted average shares outstanding – Diluted (in shares)	33,054	32,918	32,722

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net income	$ 75,629	$ 64,566	$ 65,091
Other comprehensive income (loss):
Foreign currency translation adjustment	2,512	3,301	1,766
Adjustment to post-retirement benefit liability, net of tax	136	(371)	77
Other comprehensive income	2,648	2,930	1,843
Total comprehensive income	$ 78,277	$ 67,496	$ 66,934

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 12,849	$ 32,054
Accounts receivable, net of allowance of $3,738 and $3,529, respectively	236,444	197,990
Inventories, net	176,207	98,307
Prepaid expenses and other current assets	21,467	19,671
Assets of discontinued operations	0	77,438
Total current assets	446,967	425,460
Property, plant, and equipment, net	96,885	89,562
Operating lease assets	18,120	25,229
Goodwill	510,942	514,279
Acquired intangibles	141,504	156,365
Other assets	483	1,599
Total assets	1,214,901	1,212,494
Current liabilities:
Accounts payable	172,286	134,738
Accrued expenses	67,993	83,505
Billings in excess of cost	46,711	34,702
Liabilities of discontinued operations	0	49,295
Total current liabilities	286,990	302,240
Long-term debt	23,781	85,636
Deferred income taxes	40,278	39,057
Non-current operating lease liabilities	11,390	17,730
Other non-current liabilities	27,204	24,026
Stockholders’ equity:
Preferred stock, $0.01 par value; authorized 10,000 shares; none outstanding	0	0
Common stock, $0.01 par value; authorized 100,000 and 50,000 shares in 2021 and 2020; 33,799 and 33,568 shares issued and outstanding in 2021 and 2020	338	336
Additional paid-in capital	314,541	304,870
Retained earnings	545,572	469,943
Accumulated other comprehensive income (loss)	187	(2,461)
Cost of 1,107 and 1,028 common shares held in treasury in 2021 and 2020	(35,380)	(28,883)
Total stockholders’ equity	825,258	743,805
Total liabilities and shareholders' equity	$ 1,214,901	$ 1,212,494

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowance for credit loss	$ 3,738	$ 3,529
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	50,000,000
Common stock, shares issued (in shares)	33,799,000	33,568,000
Common stock, shares outstanding (in shares)	33,799,000	33,568,000
Treasury stock, shares (in shares)	1,107,000	1,028,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net income	$ 75,629	$ 64,566	$ 65,091
Income (loss) from discontinued operations	1,113	(18,725)	5,163
Income from continuing operations	74,516	83,291	59,928
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	31,966	20,915	17,557
Intangible asset impairment	8,300	0	0
Gain on sale of business	0	(1,881)	0
Stock compensation expense	8,652	8,173	12,570
Exit activity costs, non-cash	1,193	493	408
Provision for deferred income taxes	2,968	3,786	4,120
Other, net	1,570	1,944	5,399
Changes in operating assets and liabilities (excluding the effects of acquisitions):
Accounts receivable	(41,887)	2,277	(11,256)
Inventories	(85,763)	(5,719)	14,272
Other current assets and other assets	(426)	5,467	(9,306)
Accounts payable	38,367	(1,160)	4,804
Accrued expenses and other non-current liabilities	(14,384)	(44,570)	14,040
Net cash provided by operating activities of continuing operations	25,072	73,016	112,536
Net cash (used in) provided by operating activities of discontinued operations	(2,002)	16,088	17,399
Net cash provided by operating activities	23,070	89,104	129,935
Cash Flows from Investing Activities
Purchases of property, plant, and equipment	(17,705)	(13,068)	(8,776)
Acquisitions, net of cash acquired	4,143	(313,686)	(8,595)
Net proceeds from sale of property and equipment	214	77	92
Net proceeds from sale of business	38,062	2,000	0
Net cash provided by (used in) investing activities of continuing operations	24,714	(324,677)	(17,279)
Net cash used in investing activities of discontinued operations	(176)	(2,033)	(2,394)
Net cash provided by (used in) investing activities	24,538	(326,710)	(19,673)
Cash Flows from Financing Activities
Long-term debt payments	(120,636)	0	(212,000)
Proceeds from long-term debt	59,500	85,000	0
Payment of debt issuance costs	0	0	(1,235)
Purchase of common stock at market prices	(6,497)	(6,656)	(4,305)
Net proceeds from issuance of common stock	1,021	1,119	490
Net cash (used in) provided by financing activities	(66,612)	79,463	(217,050)
Effect of exchange rate changes on cash	(201)	(1,166)	1,145
Net decrease in cash and cash equivalents	(19,205)	(159,309)	(105,643)
Cash and cash equivalents at beginning of year	32,054	191,363	297,006
Cash and cash equivalents at end of year	$ 12,849	$ 32,054	$ 191,363

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained EarningsCumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) IncomeCumulative Effect, Period of Adoption, Adjustment	Treasury Stock
Balance, shares at Dec. 31, 2018			32,887,000						796,000
Balance at Dec. 31, 2018	$ 596,693	$ 1,582	$ 329	$ 282,525	$ 338,995	$ 1,582	$ (7,234)	$ 0	$ (17,922)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	65,091				65,091
Foreign currency translation adjustment	1,766						1,766
Adjustment to post-retirement healthcare benefit liability, net of taxes	77						77
Stock compensation expense	$ 12,570			12,570
Accounting standards update	Accounting Standards Update 2016-02 [Member]
Net settlement of restricted stock units, shares			255,000						110,000
Net settlement of restricted stock units	$ (4,305)		$ 3	(3)					$ (4,305)
Issuance of restricted stock, shares			8,000
Stock options exercised, shares	42,350		42,000
Stock options exercised	$ 490			490
Balance, shares at Dec. 31, 2019			33,192,000						906,000
Balance at Dec. 31, 2019	673,964	$ (291)	$ 332	295,582	405,668	$ (291)	(5,391)		$ (22,227)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	64,566				64,566
Foreign currency translation adjustment	3,301						3,301
Adjustment to post-retirement healthcare benefit liability, net of taxes	(371)						(371)
Stock compensation expense	8,173			8,173
Net settlement of restricted stock units, shares			296,000						122,000
Net settlement of restricted stock units	(6,656)		$ 4	(4)					$ (6,656)
Issuance of restricted stock, shares			4,000
Stock options exercised, shares			76,000
Stock options exercised	1,119			1,119
Balance, shares at Dec. 31, 2020			33,568,000						1,028,000
Balance at Dec. 31, 2020	743,805		$ 336	304,870	469,943		(2,461)		$ (28,883)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	75,629				75,629
Foreign currency translation adjustment	2,512						2,512
Adjustment to post-retirement healthcare benefit liability, net of taxes	136						136
Stock compensation expense	8,652			8,652
Net settlement of restricted stock units, shares			192,000						79,000
Net settlement of restricted stock units	$ (6,497)		$ 2	(2)					$ (6,497)
Issuance of restricted stock, shares			3,000
Stock options exercised, shares	36,500		36,000
Stock options exercised	$ 1,021			1,021
Balance, shares at Dec. 31, 2021			33,799,000						1,107,000
Balance at Dec. 31, 2021	$ 825,258		$ 338	$ 314,541	$ 545,572		$ 187		$ (35,380)

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Minimum pension and post retirement benefit plan adjustments, net of taxes	$ (43)	$ (116)	$ 24

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of consolidation The consolidated financial statements include the accounts of Gibraltar Industries, Inc. and subsidiaries (the "Company"). All intercompany accounts and transactions have been eliminated in consolidation. Use of estimates The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates due to uncertainty in current economic environment. Segment Reporting The Company has four reportable segments: Renewables, Residential, Agtech and Infrastructure. In 2021, the Company's former Renewable Energy and Conservation segment was divided into two segments, Renewables and Agtech. For further disclosure regarding the Company's reportable segments, refer to Note 20 "Segment Information." Revenue recognition Revenue is recognized when, or as, the Company transfers control of promised products or service to a customer in an amount that reflects the consideration the Company expects to be entitled in exchange for transferring those products or service. Performance obligations satisfied at a point in time and significant judgments The majority of the Company's revenue from contracts with customers is recognized when the Company transfers control of the promised product at a point in time, which is determined when the customer has legal title and the significant risks and rewards of ownership of the asset, and the Company has a present right to payment for the product. The Company allocates the transaction price, which is generally the quoted price per terms of the contract and the consideration the Company expects to receive, to each performance obligation. These products are generally sold with rights of return and these contracts may provide other credits or incentives, which are accounted for as variable consideration. Sales returns, allowances, and customer incentives, including rebates, are treated as reductions to the sales transaction price and based largely 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. Performance obligations satisfied over time and significant judgments For a contract to construct an asset that the customer controls as it is being created or enhanced, or a promise to provide a product that has no alternative use to the Company and the Company has enforceable rights to payment, the Company recognizes revenue over time. For the contracts to construct a certain asset, the Company determines that the customer controls the asset while it is being constructed. For the contracts for products that have no alternative use and for which the Company has an enforceable right to payment, the Company identifies these products as products that are not a standard inventory item or the Company cannot readily direct the product to another customer for use without incurring a significant economic loss, or significant costs to rework the product. The Company determines the transaction price for each contract based on the consideration the Company expects to receive for the promised products and services under the entire contract, which is generally the stated contract price based on an expected cost plus a margin. For the above contracts with customers with respect to which the Company satisfies a performance obligation over time, the Company recognizes revenue based on the extent of progress towards completion of the performance obligation using the cost-to-cost measure of progress. Under the cost-to-cost measure of progress, for which the extent of progress toward completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recognized proportionally as costs are incurred. Costs to fulfill a contract include all direct costs related to contract performance. Selling and administrative expenses are charged to operations as incurred. Provision for loss on an uncompleted performance obligation is recognized in the period in which such loss is determined. The Company regularly reviews the progress under the cost-to-cost method and any adjustments are recognized as necessary. Changes in estimates are recognized as they become known using cumulative catch-up basis. The Company also recognizes revenues from services contracts 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 recognizes revenue on a straight-line basis throughout the contract period. Contract assets and contract liabilities Contract assets primarily represents revenue recognized for performance obligations that have been satisfied but for which amounts receivable have not been billed. These are included as current assets and included within accounts receivable on the Company's consolidated balance sheet. Contract liabilities include payments received from customers in advance of the satisfaction of performance obligations for a contract. The Company does not consider contract advances to be significant financing components as the intent of these payments in advance are for reasons other than providing a significant financing benefit and are customary in the Company's industry. Unearned revenue relates to payments received in advance of performance under the contract and is recognized when the Company performs under the contract. Unearned revenue is presented within accrued expenses in the Company's consolidated balance sheets. Costs to obtain a contract with a customer The Company recognizes an asset for the incremental costs of obtaining a contract with a customer if the Company expects the benefit of those costs to be longer than one year. If the amortization period of the asset is one year or less, the Company recognizes the incremental costs of obtaining a contract as an expense when incurred. These incremental costs include, but are not limited to, sales commissions incurred to obtain a contract with a customer. Cash and cash equivalents All highly liquid investments with a maturity of three months or less are considered cash equivalents. Accounts receivable and allowance for doubtful accounts and contract assets Accounts receivable are composed of trade and contract receivables recorded at either the invoiced amount or costs in excess of billings, are expected to be collected within one year, and do not bear interest. The Company’s expected loss allowance methodology for accounts receivable and costs in excess of billings (collectively "accounts receivable") is developed using historical collection experience, current and future economic and market conditions, and a review of the current status of customers' accounts receivables. The Company is exposed to credit losses through sales of products and services. Due to the short-term nature of such accounts receivable, the estimated amount of accounts receivable that may not be collected is based on aging of the accounts receivable balances. Additionally, specific allowance amounts are established to record the appropriate provision for customers that no longer share risk characteristics similar with other accounts receivable. The Company’s monitoring activities include timely account reconciliation, dispute resolution, payment confirmation, consideration of customers' financial condition and macroeconomic conditions. Balances are written off when determined to be u ncollectible after all means of collection have been exhausted and the potential for recovery is considered remote. Estimates are used to determine the allowance. These estimates are based on assessment of anticipated payment and all other historical, current and future information that is reasonably available. The following table summarizes activity recorded within the allowance for doubtful accounts and contract assets balances for the years ended December 31 (in thousands): 2021 2020 2019 Beginning balance $ 3,529 $ 5,951 $ 6,170 Adoption of ASU 2016-13, cumulative-effect adjustment to retained earnings at January 1, 2020 — 385 — Bad debt expense, net of recoveries 898 1,321 2,577 Accounts written off against allowance and other adjustments (689) (4,128) (2,796) Ending balance $ 3,738 $ 3,529 $ 5,951 Concentrations of credit risk in accounts receivable are limited to those from significant customers that are believed to be financially sound. As of December 31, 2021 and 2020, the Company's most significant customer is a home improvement retailer. The home improvement retailer purchases from the Residential segment. Accounts receivable as a percentage of consolidated accounts receivable from the home improvement retailer was 14% and 11% as of December 31, 2021 and 2020, respectively. Net sales to the home improvement retailer as a percentage of consolidated net sales were 13% during the year ended December 31, 2021 and 14% during each of the years ended December 31, 2020 and 2019. Inventories Inventories are valued at the lower of cost, determined using the first-in, first-out method, or net realizable value. Shipping and handling costs are recognized as a component of cost of sales. Property, plant, and equipment Property, plant, and equipment are stated at cost and depreciated over their estimated useful lives using the straight-line method. Interest is capitalized in connection with construction of qualified assets. Expenditures that exceed an established dollar threshold and that extend the useful lives of assets are capitalized, while repair and maintenance costs are expensed as incurred. The estimated useful lives of land improvements, buildings, and building improvements are 15 to 40 years, while the estimated useful lives for machinery and equipment are 3 to 20 years. The table below sets forth the depreciation expense recognized during the years ended December 31 (in thousands): 2021 2020 2019 Depreciation expense $ 13,110 $ 11,252 $ 10,666 Acquisition related assets and liabilities Accounting for the acquisition of a business as a purchase transaction requires an allocation of the purchase price to the assets acquired and the liabilities assumed in the transaction at their respective estimated fair values. The most complex estimations of individual fair values are those involving long-lived assets, such as property, plant, and equipment and intangible assets. The Company uses all available information to make these fair value determinations and engages independent valuation specialists to assist in the fair value determination of the acquired long-lived assets. Goodwill and other intangible assets The Company tests goodwill for impairment at the reporting unit level on an annual basis at October 31, or more frequently if an event occurs, or circumstances change, that indicate that the fair value of a reporting unit could be below its carrying value. The reporting units are at the component level, or one level below the operating segment level. Goodwill is assigned to each reporting unit as of the date the reporting unit is acquired and based upon the expected synergies of the acquisition. The Company may elect to perform a qualitative assessment that considers economic, industry and company-specific factors for some or all of our selected reporting units. If, after completing the assessment, it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying value, the Company proceeds to a quantitative test. The Company may also elect to perform a quantitative test instead of a qualitative test for any or all of the Company's reporting units. The quantitative impairment test consists of comparing the fair value of a reporting unit, determined using two valuation techniques, to its carrying value. If the carrying value of the reporting unit exceeds its fair value, goodwill is considered impaired, and a loss measured by the excess of the carrying value of the reporting unit over the fair value of the reporting unit must be recorded. The Company also tests its indefinite-lived intangible assets for impairment on an annual basis as of October 31, or more frequently if an event occurs, or circumstances change, that indicate that the fair value of an indefinite-lived intangible asset could be below its carrying value. The impairment test consists of comparing the fair value of the indefinite-lived intangible asset, determined using discounted cash flows on a relief-from-royalty basis, with its carrying amount. An impairment loss would be recognized for the carrying amount in excess of its fair value. Acquired identifiable intangible assets are recorded at cost. Identifiable intangible assets with finite useful lives are amortized over their estimated useful lives. For additional disclosure of the Company's goodwill and other intangible assets refer to Note 7 "Goodwill and Related Intangible Assets." Impairment of long-lived assets Long-lived assets, including acquired identifiable intangible assets with finite useful lives, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of those assets may not be recoverable. In specific situations, when the Company has selected individual assets to be sold or scrapped, the Company obtains market value data for those specific assets and measures and records the impairment loss based on such data. Otherwise, the Company uses undiscounted cash flows to determine whether impairment exists and measures any impairment loss by approximating fair value using acceptable valuation techniques, including discounted cash flow models and third-party appraisals. For additional disclosure on impairment of the Company's long-lived assets refer to Note 7 "Goodwill and Related Intangible Assets" and Note 15 "Exit Activity Costs and Asset Impairments." Leases The Company determines if an agreement is, or contains, a lease at the inception of the agreement. At lease commencement, the Company recognizes a right-of-use asset and a lease liability for leases with terms greater than twelve months. The initial lease liability is recognized at the present value of remaining lease payments over the lease term. Leases with an initial term of twelve months or less are not recorded on the Company's consolidated balance sheet. The Company recognizes lease expense for operating leases on a straight-line basis over the lease term. The Company combines lease and non-lease components, such as common area maintenance costs, in calculating the related asset and lease liabilities for all underlying asset groups. Operating lease cost is included in income from operations and includes short-term leases and variable lease costs which are immaterial. Deferred charges Deferred charges associated with initial costs incurred to enter into new debt arrangements are included as a component of long-term debt and are amortized as a part of interest expense over the terms of the associated debt agreements. Advertising The Company expenses advertising costs as incurred. For the years ended December 31, 2021, 2020 and 2019, advertising costs were $8.0 million, $7.2 million, and $5.7 million, respectively. Foreign currency transactions and translation The assets and liabilities of the Company’s foreign subsidiaries are translated into U.S. dollars at the rate of exchange in effect at the balance sheet date. Income and expense items are translated at the average exchange rates prevailing during the period. Income taxes The provision for income taxes is determined using the asset and liability approach. Under this approach, deferred income taxes represent the expected future tax consequences of temporary differences between the carrying amounts and tax basis of assets and liabilities. The Company records a valuation allowance to reduce deferred tax assets when uncertainty exists regarding their realization. Equity-based compensation The Company measures the cost of equity-based compensation based on grant date fair value and recognizes the cost over the period in which the employee is required to provide service in exchange for the award reduced by forfeitures. Equity-based compensation consists of grants of stock options, deferred stock units, common stock, restricted stock units, and performance stock units. Equity-based compensation expense is included as a component of selling, general, and administrative expenses. Recent accounting pronouncements Recent Accounting Pronouncements Adopted Standard Description Financial Statement Effect or Other Significant Matters ASU No. 2019-12 Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes The amendments in this update simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740 and improve consistent application by clarifying and amending existing guidance. The amendments of this standard are effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The standard was effective for the Company as of January 1, 2021. The Company adopted the amendments in this update and the adoption did not have a material impact to the Company’s financial statements. Date of adoption: Q1 2021 Recent Accounting Pronouncements Not Yet Adopted Standard Description Financial Statement Effect or Other Significant Matters ASU No. 2020-04 Reference Rate Reform (Topic 842), Facilitation of Effects of Reference Rate Reform on Financial Reporting , and ASU No. 2021-01 Reference Rate Reform (Topic 842), Scope The amendments in ASU 2020-04 provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met, and apply only to contracts, hedging relationships, and other transactions that reference the London Interbank Offered Rate ("LIBOR") or another reference rate expected to be discontinued as a result of reference rate reform. The expedients and exceptions provided by the amendments in ASU 2020-04 do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022 The amendments in ASU 2021-01 clarify that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. The amendments in these updates are effective as of March 12, 2020 through December 31, 2020, and may be applied retrospectively to contract modifications and hedging relationships from the beginning of an interim period that includes or is subsequent to March 12, 2020, or on a prospective basis to new modifications from any date within an interim period that includes or is subsequent to the date of the issuance of a final update, up to the date the financial statements are available to be issued. The adoption of the amendments in these updates are not expected to have a material impact on the Company's financial statements. The Company considers the applicability and impact of all ASUs. ASUs not listed above were assessed and determined to be either not applicable, or had or are expected to have minimal impact on our financial statements and related disclosures.

Revenue (Notes)

Revenue (Notes)	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue	REVENUE Sales includes revenue from contracts with customers for designing, engineering, manufacturing and installation of solar racking systems; electrical balance of systems; roof and foundation ventilation products; centralized mail systems and electronic package solutions; retractable awnings; gutter guards; rain dispersion products; trims and flashings and other accessories; designing, engineering, manufacturing and installation of greenhouses; botanical extraction systems; structural bearings; expansion joints; pavement sealant; elastomeric concrete; and bridge cable protection systems. Refer to Note 20 "Segment Information" for additional information related to revenue recognized by timing of transfer of control by reportable segment. 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. As of December 31, 2021, the Company's remaining performance obligations are part of contracts that have an original expected duration of one year or less. Additionally, as of December 31, 2021 and 2020, there were no assets recognized related to incremental costs of obtaining a contract with a customer as the benefits of these costs are not expected to exceed one year. Contract assets consist of costs in excess of billings presented within accounts receivable in the Company's consolidated balance sheets. Contract liabilities consist of billings in excess of cost, classified as current liabilities, and unearned revenue, presented within accrued expenses, in the Company's consolidated balance sheets. The following table presents the ending and beginning balances of costs in excess of billings, billings in excess of cost and unearned revenue, respectively, as of December 31, (in thousands): 2021 2020 2019 Costs in excess of billings $ 54,437 $ 26,915 $ 20,607 Billings in excess of cost (46,711) (34,702) (47,598) Unearned revenue (3,681) (21,325) (15,389) Revenue recognized during the years ended December 31, 2021, 2020, and 2019 that was in contract liabilities at the beginning of the respective periods was $53.0 million, $57.8 million, and $27.5 million, respectively. The increase in costs in excess of billings as of December 31, 2021 compared to December 31, 2020 was primarily due to the timing of the Company's right to invoice customers for performance satisfied by the Company for significant contracts in the Renewables and Agtech segments near the end of December 31, 2021. At December 31, 2020, costs in excess of billings, billings in excess of cost, and unearned revenue included approximately

Accounts Receivable

Accounts Receivable	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Accounts Receivable	ACCOUNTS RECEIVABLE, NET Accounts receivable at December 31 consisted of the following (in thousands): 2021 2020 Trade accounts receivable $ 185,745 $ 174,604 Costs in excess of billings 54,437 26,915 Total accounts receivables 240,182 201,519 Less allowance for doubtful accounts (3,738) (3,529) Accounts receivable, net $ 236,444 $ 197,990 Refer to Note 3 "Revenue" concerning the Company's costs in excess of billings.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2021
Inventory Disclosure [Abstract]
Inventories	INVENTORIES Inventories at December 31 consisted of the following (in thousands): 2021 2020 Raw material $ 135,558 $ 66,018 Work-in-process 5,858 5,382 Finished goods 39,256 31,205 Gross inventory $ 180,672 $ 102,605 Less reserves (4,465) (4,298) Total inventories $ 176,207 $ 98,307 The Company's gross inventory balances are reduced by reserves for excess, obsolete and slow moving inventory and estimates for determining net realizable value of the inventory that are reported on a net basis on the Company's consolidated balance sheet. The increase in the Company's total inventories balance as of December 31, 2021 from December 31, 2020 was largely the result of higher input costs, including raw material costs and in-bound freight, as compared to prior year, along with higher levels of inventory carried to accommodate for supply chain challenges in procuring adequate inventory to meet customer needs. The following table summarizes activity recorded within the reserve for excess, obsolete and slow moving inventory for the years ended December 31 (in thousands): 2021 2020 2019 Beginning balance $ 4,161 $ 3,463 $ 2,971 Excess, obsolete and slow moving inventory expense 215 355 1,134 Scrapped inventory and other adjustments 24 343 (642) Ending balance $ 4,400 $ 4,161 $ 3,463

Property, Plant, and Equipment

Property, Plant, and Equipment	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property, Plant, and Equipment	PROPERTY, PLANT, AND EQUIPMENT Components of property, plant, and equipment at December 31 consisted of the following (in thousands): 2021 2020 Land and land improvements $ 4,634 $ 4,605 Building and improvements 42,526 41,164 Machinery and equipment 194,015 188,853 Construction in progress 20,293 10,458 Property, plant, and equipment, gross 261,468 245,080 Less: accumulated depreciation (164,583) (155,518) Property, plant, and equipment, net $ 96,885 $ 89,562

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2021
Business Combinations [Abstract]
Acquisitions	ACQUISITIONS 2020 Acquisitions During the year ended December 31, 2020, the Company acquired five businesses in separate transactions, described further below, two of which are included within the Company's Renewables segment, two in our Agtech segment, and one in our Residential segment. The purchase consideration for each acquisition was allocated to the assets acquired and liabilities assumed based upon their respective fair values. On December 31, 2020, the Company purchased all the outstanding membership interests of TerraSmart LLC and TerraTrak LLC (collectively, "TerraSmart"), a leading provider of screw-based, ground-mount solar racking technology, particularly used for solar projects installed on challenging terrain. The results of TerraSmart have been included in the Company's consolidated financial results since the date of acquisition within the Company's Renewables segment. The purchase consideration for the acquisition of TerraSmart was $223.9 million, which includes a working capital adjustment and certain other adjustments provided for in the equity purchase agreement. The purchase price for the TerraSmart acquisition was allocated to the assets acquired and liabilities assumed based upon their respective fair values estimated as of the date of acquisition. The Company has completed the process to confirm the existence, condition and completeness of assets acquired and liabilities assumed to establish fair values of the assets acquired and liabilities assumed to determine the amount of goodwill to be recognized as of the date of acquisition. The final determination of the fair value of certain assets and liabilities was completed within a measurement period of up to one year from the date of acquisition. The excess consideration was recorded as goodwill and approximated $141.0 million, all of which is deductible for tax purposes. Goodwill represents future economic benefits arising from other assets acquired that could not be individually identified including workforce additions, growth opportunities, and increased presence in the domestic solar energy market. The allocation of the TerraSmart purchase consideration to the estimated fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands): Cash $ 1,491 Working capital 5,569 Property, plant and equipment 11,446 Acquired intangible assets 64,150 Other assets 1,854 Other liabilities (1,640) Goodwill 140,997 Fair value of purchase consideration $ 223,867 The intangible assets acquired in the TerraSmart acquisition consisted of the following (in thousands): Fair Value Weighted-Average Amortization Period Trademarks $ 20,830 Indefinite Technology 1,940 12 years Customer relationships 35,110 12 years Backlog 6,270 Less than 1 year Total $ 64,150 On December 11, 2020, the Company purchased all the outstanding stock of Sunfig Corporation ("Sunfig"), a provider of software solutions that optimize solar energy investments through upstream design, performance and financial modeling, for a purchase consideration of $3.8 million, which includes a working capital adjustment and certain other adjustments provided for in the stock purchase agreement. The results of Sunfig have been included in the Company's consolidated financial results since the date of acquisition within the Company's Renewables segment. The excess consideration was recorded as goodwill and approximated $3.5 million, all of which is deductible for tax purposes. On October 15, 2020, the Company purchased substantially all of the assets of Architectural Mailboxes LLC ("Architectural Mailboxes"), a complementary addition to Gibraltar's existing mail and package solutions business within the Residential segment, for a purchase consideration of $26.9 million, which includes a working capital adjustment and certain other adjustments provided for in the asset purchase agreement. The results of Architectural Mailboxes have been included in the Company's consolidated financial results since the date of acquisition within the Company's Residential segment. The excess consideration was recorded as goodwill and approximated $7.4 million, all of which is deductible for tax purposes. On February 13, 2020, the Company purchased substantially all of the assets of Delta Separations, LLC, a California limited liability company, and Teaching Tech, LLC, a California limited liability company (collectively, "Delta Separations") for a purchase consideration of $47.1 million, which includes a working capital adjustment and certain other adjustments provided for in the asset purchase agreement. Delta Separations was a privately-held engineering company primarily engaged in the assembly and sale of centrifugal ethanol-based extraction systems. The results of Delta Separations have been included in the Company's consolidated financial results since the date of acquisition within the Company's Agtech segment. The excess consideration was recorded as goodwill and approximated $32.2 million, all of which is deductible for tax purposes. On January 15, 2020, the Company purchased substantially all of the assets of Thermo Energy Systems Inc. ("Thermo"), a Canadian-based, privately held provider of commercial greenhouse solutions in North America providing growing infrastructure for the plant based organic food market, for a purchase consideration of $7.3 million. The results of Thermo have been included in the Company's consolidated financial results since the date of acquisition within the Company's Agtech segment. The excess consideration recorded as goodwill approximated $19.1 million, all of which is deductible for tax purposes. The allocation of the purchase consideration to the estimated fair value of the assets acquired and liabilities assumed in the acquisitions of Sunfig, Architectural Mailboxes, Delta Separations and Thermo is as follows as of the respective date of the acquisition (in thousands): Cash $ 179 Working capital (15,377) Property, plant and equipment 1,740 Acquired intangible assets 38,066 Other current assets 1,528 Other assets 2,381 Other liabilities (5,576) Goodwill 62,161 Fair value of purchase consideration $ 85,102 Goodwill represents future economic benefits arising from other assets acquired that could not be individually identified including workforce additions, growth opportunities, and increased presence in the respective markets. The intangible assets acquired in the acquisitions of Sunfig, Architectural Mailboxes, Delta Separations and Thermo consisted of the following as of the respective date of the acquisition (in thousands): Fair Value Weighted-Average Amortization Period Trademarks $ 8,100 Indefinite Trademarks 1,177 3 years Technology 8,345 5 - 15 years Customer relationships 18,480 11 - 13 years Non-compete agreements 1,036 5 years Backlog 928 Less than 1 year Total $ 38,066 2019 Acquisition On August 30, 2019, the Company acquired all of the outstanding membership interests of Apeks LLC ("Apeks"), a designer and manufacturer of botanical oil extraction systems and equipment. The results of Apeks have been included in the Company's consolidated financial results since the date of acquisition within the Company's Agtech segment. The aggregate purchase consideration for the acquisition of Apeks was $12.6 million, which includes a working capital adjustment and certain other adjustments provided for in the membership interest purchase agreement. The purchase price for the acquisition was allocated to the assets acquired and liabilities assumed based upon their respective fair values. The excess consideration was recorded as goodwill and approximated $6.4 million, all of which is deductible for tax purposes. Goodwill represents future economic benefits arising from other assets acquired that could not be individually identified including workforce additions, growth opportunities, and presence in the extraction processing markets. The allocation of the purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands): Cash $ 4,154 Working capital (1,515) Property, plant and equipment 1,059 Acquired intangible assets 3,000 Other assets 508 Other liabilities (1,081) Goodwill 6,436 Fair value of purchase consideration $ 12,561 The intangible assets acquired in this acquisition consisted of the following as of the date of the acquisition (in thousands): Fair Value Weighted-Average Amortization Period Trademarks $ 1,400 Indefinite Technology 900 7 years Customer relationships 700 6 years Total $ 3,000 The acquisition of TerraSmart was financed through a combination of cash on hand and borrowings under the Company's revolving credit facility. The acquisitions of Sunfig, Architectural Mailboxes, Delta Separations, Thermo and Apeks were funded from cash on hand. The Company recognized costs as a component of cost of sales related to the sale of inventory at fair value as a result of allocating the purchase price of recent acquisitions. The Company also incurred certain acquisition-related costs composed of legal and consulting fees. These costs were recognized as a component of selling, general, and administrative expenses in the consolidated statements of operations. The acquisition-related costs consisted of the following for the years ended December 31 (in thousands): 2021 2020 2019 Cost of sales $ — $ 634 $ 401 Selling, general and administrative costs 949 3,230 1,517 Total acquisition related costs $ 949 $ 3,864 $ 1,918

Goodwill and Related Intangible

Goodwill and Related Intangible Assets	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Related Intangible Assets	GOODWILL AND RELATED INTANGIBLE ASSETS Goodwill The changes in the carrying amount of goodwill for the years ended December 31 were as follows (in thousands): Renewables Residential Agtech Infrastructure Total Balance at December 31, 2019 $ 44,816 $ 198,075 $ 32,786 $ 31,678 $ 307,355 Acquired goodwill 147,004 7,377 50,862 — 205,243 Adjustments to prior year acquisitions — — 578 — 578 Foreign currency translation 707 — 396 — 1,103 Balance at December 31, 2020 $ 192,527 $ 205,452 $ 84,622 31,678 $ 514,279 Adjustments to prior year acquisitions (2,433) — 323 — (2,110) Foreign currency translation (1,414) — 187 — (1,227) Balance at December 31, 2021 $ 188,680 $ 205,452 $ 85,132 31,678 $ 510,942 Goodwill is recognized net of accumulated impairment losses of $133.2 million as of December 31, 2021 and 2020, respectively. No goodwill impairment charges were recognized by the Company during 2021 or 2020. Annual and Interim Impairment Testing The Company tests goodwill and indefinite-lived intangible assets for impairment on an annual basis as of October 31 and at interim dates when indicators of impairment are present. In 2021, 2020 and 2019, no indicators of impairment were identified as of interim dates; therefore, no interim tests were performed. During the October 31, 2021 impairment test, the Company conducted a quantitative analysis for all eight of the Company’s reporting units. The quantitative impairment test consists of comparing the fair value of a reporting unit with its carrying value including goodwill. The fair value of each reporting unit evaluated under the quantitative test was determined using two valuation techniques: an income approach and a market approach. Each valuation approach relies on significant assumptions including a weighted average cost of capital ("WACC") based upon the capital structure of market participants in the Company’s peer groups, projected revenue growth, forecasted cash flows, and earnings multiples based on the market value of the Company and market participants within its peer groups. As a result of the Company's annual testing for 2021, 2020 and 2019, none of the reporting units with goodwill as of the testing date had carrying values in excess of their fair values. Acquired Intangible Assets Acquired intangible assets consist of the following (in thousands): December 31, 2021 December 31, 2020 Gross Accumulated Gross Accumulated Indefinite-lived intangible assets: Trademarks $ 52,700 $ — $ 56,570 $ — Finite-lived intangible assets: Trademarks 5,521 4,011 5,818 3,385 Unpatented technology 38,474 20,656 38,752 17,765 Customer relationships 108,591 39,832 98,500 31,580 Non-compete agreements 2,686 1,969 4,885 1,747 Backlog 7,200 7,200 7,228 911 162,472 73,668 155,183 55,388 Total acquired intangible assets $ 215,172 $ 73,668 $ 211,753 $ 55,388 During the year ended December 31, 2021, the Company recognized impairment charges of $8.3 million related to indefinite-lived trademark intangible assets due to a rebranding initiative that resulted in the discontinuation of certain indefinite-lived trademarks in the Company's Agtech segment. The Company did not recognize impairment charges related to indefinite-lived trademark intangible assets for the year ended December 31, 2020. The Company recognized amortization expense related to the definite-lived intangible assets. The following table summarizes amortization expense for the years ended December 31 (in thousands): 2021 2020 2019 Amortization expense $ 18,856 $ 9,663 $ 6,891 Amortization expense related to acquired intangible assets for the next five years ended December 31 is estimated as follows (in thousands): 2022 2023 2024 2025 2026 Amortization expense $ 12,124 $ 11,195 $ 11,014 $ 10,780 $ 9,161

Accrued Expenses

Accrued Expenses	12 Months Ended
	Dec. 31, 2021
Accrued Liabilities, Current [Abstract]
Accrued Expenses	ACCRUED EXPENSES Accrued expenses at December 31 consist of the following (in thousands): 2021 2020 Compensation $ 15,293 $ 18,131 Customer rebates 15,253 11,575 Insurance 7,310 6,915 Current operating lease liability 7,239 8,034 Interest and taxes 5,463 1,850 Unearned revenue 3,681 21,325 Current portion of cash-settled share-based liabilities 2,947 3,504 Other 10,807 12,171 Total accrued expenses $ 67,993 $ 83,505 Accrued expenses for insurance are primarily for general liability, workers’ compensation and employee healthcare policies for which the Company is self-insured up to certain per-occurrence and aggregate limits. The amounts

Debt

Debt	12 Months Ended
	Dec. 31, 2021
Long-term Debt, Unclassified [Abstract]
Debt	DEBT Long-term debt consists of the following (in thousands): December 31, 2021 December 31, 2020 Revolving credit facility $ 24,500 $ 85,000 Other debt — 636 Less unamortized debt issuance costs (719) — Total debt $ 23,781 $ 85,636 Senior Credit Agreement On January 24, 2019, the Company entered into the Sixth Amended and Restated Credit Agreement ("Senior Credit Agreement"), which amended and restated the Company’s Fifth Amended and Restated Credit Agreement dated December 9, 2015, and provided a revolving credit facility and letters of credit in an aggregate amount equal to $400 million. The Company can request additional financing to increase the revolving credit facility to $700 million or enter into a term loan of up to $300 million subject to conditions set forth in the Senior Credit Agreement. The Senior Credit Agreement contains three financial covenants. As of December 31, 2021, the Company was in compliance with all three covenants. Interest rates on the revolving credit facility are based on LIBOR plus an additional margin that ranges from 1.125% to 2.00%. In addition, the revolving credit facility is subject to an undrawn commitment fee ranging between 0.15% and 0.25% based on the Total Leverage Ratio and the daily average undrawn balance. The Senior Credit Agreement terminates on January 23, 2024. Borrowings under the Senior Credit Agreement are secured by the trade receivables, inventory, personal property, equipment, and general intangibles of the Company’s significant domestic subsidiaries. Capital distributions are subject to certain Total Leverage Ratio requirements and capped by an annual aggregate limit under the Senior Credit Agreement. Standby letters of credit of $6.2 million have been issued under the Senior Credit Agreement to third parties on behalf of the Company as of December 31, 2021. These letters of credit reduce the amount otherwise available under the revolving credit facility. The Company had $369.3 million and $309.2 million of availability under the revolving credit facility as of December 31, 2021 and 2020, respectively. Total cash paid for interest in the years ended December 31 was (in thousands): 2021 2020 2019 Interest expense, net $ 1,639 $ 703 $ 2,323 Interest income 269 276 764 Other non-cash adjustments (345) (345) (380) Cash paid for interest $ 1,563 $ 634 $ 2,707

Pension and Other Postretiremen

Pension and Other Postretirement Benefits	12 Months Ended
	Dec. 31, 2021
Other Postretirement Benefits [Abstract]
Pension and Other Postretirement Benefits	PENSION AND OTHER POSTRETIREMENT BENEFITSThe Company has a 401(k) plan which all employees of U.S. subsidiaries are eligible to participate. The Company contributes to a multiemployer defined benefit pension plan under the terms of a collective-bargaining agreement that covers union-represented employees. The Company has an unfunded postretirement healthcare plan which provides health insurance to certain employees and their spouses upon retirement. This plan has been frozen and no additional participants will be added to the plan in the future. Total expense for all retirement plans for the years ended December 31 was (in thousands): 2021 2020 2019 401(k) plan $ 3,196 $ 2,403 $ 2,031 Multiemployer and other defined benefit and pension plans 78 70 195 Postretirement healthcare plan 411 351 346 Total retirement plan expense $ 3,685 $ 2,824 $ 2,572 The Company's one multiemployer plan is underfunded and has a rehabilitation plan in place. The rehabilitation plan requires minimum contributions from the Company. Given the status of this plan, it is reasonably possible that future contributions to the plan will increase although the Company cannot reasonably estimate a possible range of increased contributions as of December 31, 2021. The following table presents the changes in the accumulated postretirement benefit obligation related to the Company’s unfunded postretirement healthcare benefits at December 31 (in thousands): 2021 2020 Projected benefit obligation at January 1 $ 6,443 $ 6,024 Service cost — 10 Interest cost 125 172 Plan amendments 162 — Actuarial (gain) loss (200) 580 Benefits paid, net of contributions (328) (343) Projected benefit obligation at December 31 6,202 6,443 Fair value of plan assets — — Under funded status (6,202) (6,443) Unamortized prior service cost 412 294 Unrecognized actuarial loss 1,530 1,843 Net amount recognized $ (4,260) $ (4,306) Amounts recognized in the consolidated financial statements consisted of (in thousands): 2021 2020 Accrued postretirement benefit liability Current portion $ 358 $ 335 Long term portion 5,844 6,108 Pre-tax accumulated other comprehensive loss – unamortized post-retirement healthcare costs (1,942) (2,137) Net amount recognized $ 4,260 $ 4,306 The measurement date used to determine postretirement benefit obligation measures was December 31. Components of net periodic postretirement benefit cost charged to expense for the years ended December 31 were as follows (in thousands): 2021 2020 2019 Service cost $ — $ 10 $ 17 Interest cost 125 172 234 Amortization of unrecognized prior service cost 44 44 44 Loss amortization ( 2 ) 113 64 51 Net periodic benefit cost $ 282 $ 290 $ 346 Assumptions used to calculate the benefit obligation: Discount rate 2.4 % 2.0 % 2.9 % Annual rate of increase in the per capita cost of: Medical costs before age 65 ( 1) 7.0 % 7.0 % 6.8 % Medical costs after age 65 ( 1) 4.5 % 4.5 % 4.5 % Prescription drug costs ( 1) 7.0 % 7.0 % 7.0 % (1) It was assumed that these rates would gradually decline to 3.8% by 2075. (2) Actuarial (gains)/losses are amortized utilizing the corridor approach. Differences between actual experience and the actuarial assumptions are reflected in (gain)/loss. If the total net (gain) or loss exceeds 10 percent of the greater of the accumulated postretirement benefit obligation or plan assets, this excess must be amortized over the average remaining service period of the active plan participants. If most of the plan participants are inactive, the amortization period is the expected future lifetime of inactive plan participants. Expected benefit payments from the plan for the years ended December 31 are as follows (in thousands): 2022 2023 2024 2025 2026 Years 2027 - 2031 Expected benefit payments $ 358 $ 369 $ 377 $ 389 $ 401 $ 1,961

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The cumulative balance of each component of accumulated other comprehensive income (loss) is as follows (in thousands): Foreign Currency Translation Adjustment Minimum post retirement benefit plan adjustments Total Pre-Tax Amount Tax (Benefit) Expense Accumulated Other Comprehensive Income (Loss) Balance at December 31, 2019 $ (4,173) $ (1,939) $ (6,112) $ (721) $ (5,391) Minimum post retirement benefit plan adjustments — (487) (487) (116) (371) Foreign currency translation adjustment 3,301 — 3,301 — 3,301 Balance at December 31, 2020 $ (872) $ (2,426) $ (3,298) $ (837) $ (2,461) Minimum post retirement benefit plan adjustments — 179 179 43 136 Foreign currency translation adjustment 2,512 — 2,512 — 2,512 Balance at December 31, 2021 $ 1,640 $ (2,247) $ (607) $ (794) $ 187

Equity-Based Compensation

Equity-Based Compensation	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]
Equity-Based Compensation	EQUITY-BASED COMPENSATION The Company awards equity-based compensation to employees and directors, which is recognized in the statements of operations based on the grant-date fair value of the award. The Company uses the straight-line method for recording compensation expense over a vesting period generally up to four years with either graded or cliff vesting. Stock compensation expense recognized during the period is based on the value of the portion of equity-based awards that is ultimately expected to vest during the period reduced by the expense on unvested awards forfeited during the period. On May 4, 2018, the shareholders of the Company approved the adoption of the Gibraltar Industries, Inc. 2018 Equity Incentive Plan (the "2018 Plan"). The 2018 Plan provides for the issuance of up to 1,000,000 shares of common stock and supplements the remaining shares available for issuance under the existing Gibraltar Industries, Inc. 2015 Equity Incentive Plan (the "2015 Plan"). The Company's 2005 Equity Incentive Plan (the "Prior Plan") was amended in 2015 to terminate issuance of further awards from the Prior Plan. Both the 2018 Plan and the 2015 Plan allow the Company to grant equity-based incentive compensation awards, in the form of non-qualified options, restricted shares, restricted stock units, performance shares, performance stock units, and stock rights to eligible participants. In 2016, the shareholders of the Company approved the adoption of the Gibraltar Industries, Inc. 2016 Stock Plan for Non-Employee Directors ("Non-Employee Directors Plan") which allows the Company to grant awards of shares of the Company's common stock to non-employee Directors of the Company and permits the Directors to defer receipt of such shares pursuant to the terms of the Non-Employee Directors Plan. At December 31, 2021, approximately 393,000 and 120,000 shares were available for issuance under the 2018 Plan and 2015 Plan, respectively, as incentive stock options or other stock awards, and approximately 19,000 shares were available for issuance under the Non-Employee Directors Plan as awards of shares of the Company's common stock. The Company recognized the following compensation expense in connection with awards that vested under the 2018 Plan, the 2015 Plan, the Prior Plan, and the Non-Employee Directors Plan along with the related tax benefits recognized during the years ended December 31 (in thousands): 2021 2020 2019 Expense recognized under the Prior Plan $ 29 $ 40 $ 192 Expense recognized under the 2015 Plan 1,186 1,932 5,077 Expense recognized under the 2018 Plan 6,597 5,441 6,731 Expense recognized under the Non-Employee Directors Plan 840 760 570 Total stock compensation expense $ 8,652 $ 8,173 $ 12,570 Tax benefits recognized related to stock compensation expense $ 2,189 $ 2,272 $ 3,136 Equity Based Awards - Settled in Stock The following table provides the number of stock units and common stock granted during the years ended December 31, along with the weighted-average grant-date fair value of each award: 2021 2020 2019 Awards Number of Weighted Number of Weighted Number of Weighted Deferred stock units 7,536 $ 83.58 12,402 $ 45.98 7,509 $ 37.95 Common stock 2,512 $ 83.58 4,134 $ 45.98 7,509 $ 37.95 Restricted stock units 72,243 $ 79.28 81,397 $ 56.81 152,472 $ 39.73 Performance stock units 62,778 $ 87.84 160,426 $ 55.98 183,908 $ 40.49 Stock Options No options were granted in 2021, 2020 and 2019. The Company determines the fair value of stock options granted based on the Black-Scholes option pricing model on the date of grant, and the expected stock volatility is based on volatility of the Company’s stock price using a historical period commensurate with the expected life of the options. The following table summarizes the ranges of outstanding and exercisable options at December 31, 2021: Range of Exercise Prices Options Weighted Average Weighted Options Weighted $39.00– $44.00 5,000 5.33 $ 39.55 5,000 $ 39.55 The following table summarizes information about stock option transactions: Options Weighted Weighted Average Aggregate Balance at January 1, 2019 159,759 $ 17.70 Exercised (42,350) 11.57 Balance at December 31, 2019 117,409 $ 19.91 Exercised (75,909) 14.73 Balance at December 31, 2020 41,500 $ 29.38 Exercised (36,500) 27.99 Balance at December 31, 2021 5,000 $ 39.55 5.33 $ 135,650 The aggregate intrinsic value in the preceding table represents the total pre-tax intrinsic value, based on the $66.68 per share market price of the Company’s common stock as of December 31, 2021, which would have been received by the option holders had all option holders with an exercise price below the per share market price on December 31, 2021, exercised their options as of that date. Stock Units and Common Stock The following table summarizes information about non-vested restricted stock units, performance stock units (that will convert to shares upon vesting) and common stock: Restricted Weighted Common Stock Weighted Performance Stock Units (1) (2) Weighted Average Grant Date Fair Value Deferred Stock Units (3) Weighted Average Grant Date Fair Value Balance at December 31, 2020 237,442 $ 41.15 — $ — 407,289 $ 45.00 47,154 $ 37.30 Granted 72,243 $ 79.28 2,512 $ 83.58 62,778 $ 87.84 7,536 $ 83.58 Adjustments — $ — — $ — 7,400 $ 52.40 — $ — Vested (83,028) $ 43.09 (2,512) $ 83.58 (106,826) $ 35.06 (2,218) $ 36.47 Forfeited (22,073) $ 49.78 — $ — (7,167) $ 46.87 — $ — Balance at December 31, 2021 204,584 $ 52.90 — $ — 363,474 $ 55.44 52,472 $ 43.99 (1) The Company’s performance stock units (“PSUs”) represent shares granted for which the final number of shares earned depends on financial performance or market conditions. The number of shares to be issued may vary between 0% and 200% of the number of PSUs granted depending on the relative achievement to targeted thresholds. The Company's PSUs with a financial performance condition are based on either the Company’s return on invested capital (“ROIC”) over a one-year period performance period or other criteria such as revenue, gross profit, and operating profit thresholds over a two-year or three-year performance period. The Company's PSUs with a market condition are based on the ranking of the Company’s total shareholder return (“TSR”) performance, on a percentile basis, over a three year performance period compared to the S&P Small Cap Industrial sector, over the same three year performance period. (2) The Company's PSU adjustments during 2021 represent shares earned for achievement in excess of targeted thresholds at the end of the performance period. The Company's PSUs with a financial performance condition, based on the Company ROIC, granted in 2020 accounted for the 7,400 PSUs that will be converted to shares and issued to recipients in the first quarter of 2023 at 109.5% of the target amount granted, based on the Company's actual ROIC compared to ROIC target for the performance period ended December 31, 2020. (3) Vested and issuable upon termination from service as a member of the Company's Board of Directors. The fair value of the common stock, restricted stock units, and deferred stock units, as well as the performance stock units with a financial performance condition granted during the three years ended December 31, 2021 was based on the Company stock price at grant date of the award. The fair value of the performance stock units with a market condition granted during the three years ended December 31, 2021 were determined using a Monte Carlo simulation as of the grant date of the award. The Company granted performance units with a market condition during 2020, however, no such awards were granted in 2021 and 2019. The following table sets forth the aggregate intrinsic value of options exercised and aggregate fair value of restricted stock units and restricted shares that vested during the years ended December 31 (in thousands): 2021 2020 2019 Aggregate intrinsic value of options exercised $ 2,103 $ 3,812 $ 1,371 Aggregate fair value of vested restricted stock units $ 6,320 $ 11,851 $ 10,017 Aggregate fair value of vested common and restricted shares $ 370 $ 190 $ 285 Aggregate fair value of vested deferred stock units $ 630 $ 570 $ 285 As of December 31, 2021, there was $10.3 million of total unrecognized compensation cost related to non-vested restricted and performance stock units. That cost is expected to be recognized over a weighted average period of 2.1 years. Equity Based Awards - Settled in Cash Management Stock Purchase Plan At December 31, 2021, the Company's equity based awards that are settled in cash are the awards under the Management Stock Purchase Plan ("MSPP"). The total of these share-based liabilities recorded on the consolidated balance sheet as of December 31, 2021 was $22.6 million, of which $2.9 million was included in current accrued expenses and $19.7 million was included in non-current liabilities. Total share-based liabilities as of December 31, 2020 were $18.2 million, of which $14.7 million was included in non-current liabilities. The MSPP provides participants the ability to defer a portion of their compensation, convertible to unrestricted investments, restricted stock units, or a combination of both, or defer a portion of their Directors’ fees, convertible to restricted stock units. Employees eligible to defer a portion of their compensation also receive a company-matching award in restricted stock units equal to a percentage of their deferred compensation. The deferrals and related company match are credited to an account that represents a share-based liability. The portion of the account deferred to unrestricted investments is measured at fair market value of the unrestricted investments, and the portion of the account deferred to restricted stock units and company-matching restricted stock units is measured at a 200-day average of the Company stock price. The account will be converted to and settled in cash payable to participants upon retirement or a termination of their service to the Company. The following table provides the number of restricted stock units credited to active participant accounts, balance of vested and unvested restricted stock units within active participant accounts, payments made with respect to restricted stock units issued under the MSPP, and MSPP expense during years ended December 31: 2021 2020 2019 Restricted stock units credited 30,475 57,046 61,369 Restricted stock units balance, vested and unvested 223,892 231,343 415,760 Share-based liabilities paid, in thousands $ 4,915 $ 15,401 $ 6,543 MSPP expense, in thousands $ 6,034 $ 4,518 $ 2,699

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, various techniques and assumptions can be used to estimate fair value. 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 as follows: • Level 1 - Quoted prices in active markets for identical assets or liabilities. • Level 2 - Observable inputs other than quoted prices in active markets for similar assets and liabilities. • Level 3 - Inputs that are unobservable inputs for the asset or liability. The Company had no financial assets or liabilities measured at fair value on a recurring basis and did not have any financial instruments for which carrying value differed from its fair value at December 31, 2021 and 2020. As of December 31, 2021, the Company had $24.5 million outstanding on its revolving credit facility under its Senior Credit Agreement. The Company determined the carrying value of the outstanding balance on its revolving credit facility approximates fair value due to the variable market interest rate terms of the credit facility. The Company had $85 million outstanding on its revolving credit facility as of December 31, 2020. The Company’s other financial instruments primarily consist of cash and cash equivalents, accounts receivable, notes receivable, and accounts payable. The carrying values for these financial instruments approximate fair value. The Company did not have any other material assets or liabilities carried at fair value and measured on a recurring basis as of December 31, 2021 and 2020. Other non-recurring fair value measurements The Company recognized impairment charges related to certain intangible assets during the year ended December 31, 2021, and recorded impairment of property, plant, and equipment during the year ended December 31, 2020. The Company did not recognize any impairment charges related to certain intangible assets or property, plant, and equipment during the year ended December 31, 2019. The Company uses unobservable inputs, classified as Level 3 inputs, in determining the fair value of these assets. See Note 7 "Goodwill and Related Intangible Assets" and Note 15 "Exit Activity Costs and Asset Impairments" for more disclosure regarding the impairment of certain intangible assets and property, plant, and equipment, respectively. The Company also applied fair value principles for the goodwill impairment tests performed during 2021, 2020, and 2019. The Company used two valuation models to estimate the fair values of its reporting units, both of which primarily use Level 3 inputs. See Note 7 of the consolidated financial statements for the results of the Company’s goodwill impairment tests.

Discontinued Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
DISCONTINUED OPERATIONS	DISCONTINUED OPERATIONS On February 23, 2021, the Company sold the stock of its Industrial business which had been classified as held for sale and reported as a discontinued operation in the Company’s consolidated financial statements for the year ended December 31, 2020. Net proceeds of $38 million, consisting of cash and a $13 million seller note, resulted in an estimated pre-tax loss of $30 million, subject to working capital and other adjustments, of which $29.6 million was recorded when the assets of the Industrial business were written down to fair market value during the fourth quarter of 2020. The seller note was paid in full to the Company during the second quarter of 2021. The results of operations and financial position of the Industrial business have been presented as a discontinued operation in the Company's consolidated financial statements for all periods presented. The Company allocates interest to its discontinued operations in accordance with ASC Subtopic 205-20, “Presentation of Financial Statements – Discontinued Operations.” Interest was allocated based on the amount of net assets held by the discontinued operation in comparison to consolidated net assets. The following carrying amounts of the major classes of assets and liabilities included in discontinued operations related to the Industrial business have been segregated from the Company's continuing operations and are reported as assets and liabilities of discontinued operations held for sale, respectively, in the consolidated balance sheet at December 31, 2020 (in thousands): December 31, 2020 Assets Accounts receivable, net $ 11,261 Inventories, net 13,041 Prepaid expenses and other current assets 21,310 Total current assets (1) 45,612 Property, plant, and equipment, net 16,999 Operating lease assets 6,470 Goodwill 22,475 Acquired intangibles 15,482 Loss recognized on classification as held for sale (29,600) Total noncurrent assets (1) 31,826 Total assets classified as held for sale $ 77,438 Liabilities Accounts payable $ 10,708 Accrued expenses 9,274 Total current liabilities (1) 19,982 Deferred income taxes 24,657 Non-current operating lease liabilities 4,639 Other non-current liabilities 17 Total noncurrent liabilities (1) 29,313 Total liabilities classified as held for sale $ 49,295 (1) The assets and liabilities of the discontinued operations were classified as current on the December 31, 2020 consolidated balance sheet, as it was probable that the sale would occur and proceeds would be collected within one year. Components of the income (loss) from discontinued operations before taxes, including the interest allocated to discontinued operations, for the years ended December 31 were as follows (in thousands): 2021 2020 2019 Net sales $ 20,391 $ 128,915 $ 150,225 Operating expenses 17,493 115,822 143,335 Loss and adjustments to loss on disposal 1,419 29,600 — Interest expense allocation — 95 208 Income (loss) from discontinued operations before taxes $ 1,479 $ (16,602) $ 6,682 On June 30, 2020, the Company sold its self-guided apartment tour application business to a third party from its Residential segment. The $2.0 million net proceeds from the sale resulted in pre-tax net gain of $1.9 million and has been presented within other (income) expense in the consolidated statements of income. This divestiture does not meet the criteria to be reported as a discontinued operation nor did it have a major effect on the Company's operations.

Exit Activity Costs and Asset I

Exit Activity Costs and Asset Impairments	12 Months Ended
	Dec. 31, 2021
Restructuring and Related Activities [Abstract]
Exit Activity Costs and Asset Impairments	EXIT ACTIVITY COSTS AND ASSET IMPAIRMENTS The Company has incurred exit activity costs and asset impairment charges as a result of its 80/20 simplification and portfolio management initiatives. These initiatives have resulted in the identification of low-volume, low margin, internally-produced products which have been or will be outsourced or discontinued, the simplification of processes, in the sale and exiting of less profitable businesses or products lines, and the reduction in our manufacturing footprint. Exit activity costs were incurred during 2021 related to moving and closing costs, severance and contract terminations, along with asset impairment charges related to the write-down of inventory and impairment of machinery and equipment associated with discontinued product lines, as a result of process simplification initiatives. In conjunction with these initiatives, in 2021, the Company closed four facilities. In 2020, the Company closed two facilities and, separately, sold a facility closed in 2017. The Company closed and consolidated one facility during 2019. These closures resulted in exit activity costs and asset impairment charges. The following table sets forth the exit activity costs and asset impairment charges incurred by segment during the years ended December 31 related to the restructuring activities described above (in thousands): 2021 2020 2019 Exit activity costs Asset impairment charges Total Exit activity costs Asset impairment charges Total Exit activity costs Asset impairment charges Total Renewables $ 4,769 $ 1,193 $ 5,962 $ 15 $ — $ 15 $ 66 $ — $ 66 Residential 393 — 393 731 9 740 3,440 417 3,857 Agtech 1,687 — 1,687 860 72 932 — (9) (9) Infrastructure 26 — 26 226 — 226 — — — Corporate 145 — 145 375 — 375 1,660 — 1,660 Total exit activity costs & asset impairments $ 7,020 $ 1,193 $ 8,213 $ 2,207 $ 81 $ 2,288 $ 5,166 $ 408 $ 5,574 The following table provides a summary of where the above exit activity costs and asset impairments are recorded in the consolidated statements of operations for the years ended December 31 (in thousands): 2021 2020 2019 Cost of sales $ 6,176 $ 1,059 $ 767 Selling, general, and administrative expense 2,037 1,229 4,807 Total exit activity costs and asset impairments $ 8,213 $ 2,288 $ 5,574 The following table reconciles the beginning and ending liability for exit activity costs relating to the Company’s facility consolidation efforts (in thousands): 2021 2020 Balance as of January 1 $ 1,030 $ 2,083 Exit activity costs recognized 7,020 2,207 Cash payments (7,778) (3,260) Balance as of December 31 $ 272 $ 1,030

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXESThe Company uses the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to reverse. The components of income before taxes from continuing operations consisted of the following for the years ended December 31 (in thousands): 2021 2020 2019 Domestic $ 93,155 $ 108,930 $ 78,351 Foreign 6,407 (1,171) (270) Income before taxes from continuing operations $ 99,562 $ 107,759 $ 78,081 The provision for income taxes from continuing operations for the years ended December 31 consisted of the following (in thousands): 2021 2020 2019 Current: U.S. Federal $ 16,137 $ 16,505 $ 10,394 State 5,009 4,071 3,547 Foreign 932 106 92 Total current 22,078 20,682 14,033 Deferred: U.S. Federal 1,766 3,620 3,740 State 134 672 486 Foreign 1,068 (506) (106) Total deferred 2,968 3,786 4,120 Provision for income taxes $ 25,046 $ 24,468 $ 18,153 The provision for income taxes from discontinued operations for the years ended December 31 consisted of the following (in thousands): 2021 2020 2019 Current: U.S. Federal $ 362 $ 1,345 $ 885 State 139 57 4 Foreign 214 1,725 1,447 Total current 715 3,127 2,336 Deferred: U.S. Federal (340) (876) (823) State 2 10 23 Foreign (11) (138) (17) Total deferred (349) (1,004) (817) Provision for income taxes $ 366 $ 2,123 $ 1,519 The provision for income taxes from continuing operations differs from the federal statutory rate of 21% due to the following (in thousands) for the years ended December 31: 2021 2020 2019 Statutory rate 20,908 21.0 % 22,629 21.0 % 16,397 21.0 % State taxes, less federal effect 4,068 4.1 % 3,650 3.4 % 3,194 4.1 % Federal tax credits (587) (0.6) % (1,064) (1.0) % (1,621) (2.1) % Excess tax benefit on stock based compensation (2,039) (2.0) % (1,674) (1.6) % (871) (1.1) % Uncertain tax positions — — % — — % (260) (0.3) % Executive compensation 1,781 1.8 % 1,114 1.0 % 1,132 1.4 % Change in valuation allowance — — % (130) (0.1) % 88 0.1 % Other 915 0.9 % (57) — % 94 0.1 % $ 25,046 25.2 % $ 24,468 22.7 % $ 18,153 23.2 % Deferred tax liabilities at December 31 consist of the following (in thousands): 2021 2020 Depreciation $ 9,633 $ 7,697 Goodwill 48,265 41,842 Intangible assets 1,657 5,632 Other 5,298 6,878 Gross deferred tax liabilities 64,853 62,049 Capital loss carryforward (27,328) — Equity compensation (8,236) (7,496) Other (15,641) (15,682) Gross deferred tax assets (51,205) (23,178) Valuation allowances 26,581 111 Deferred tax assets, net of valuation allowances (24,624) (23,067) Net deferred tax liabilities $ 40,229 $ 38,982 At December 31, 2021, the Company had total net operating loss carry forwards of $15.1 million, which included $0.4 million for federal, $14.3 million for state, and $0.4 million for foreign income tax purposes. The federal and state net operating loss carry forwards expire between 2022 and 2041. The foreign net operating loss carry forwards expire between 2022 and 2030. The Company recognized a total of $0.7 million of deferred tax assets, net of the federal tax benefit, related to these net operating losses prior to any valuation allowances, which included $0.1 million of federal and $0.5 million of state deferred tax assets and $0.1 million of foreign deferred tax assets. As a result of the sale of the Industrial business during 2021, the Company will generate a capital loss of $113.8 million for federal and state purposes to the extent allowable under state tax regulations. The capital loss carryforward will expire in 2026. The Company recognized a total of $27.3 million of deferred tax assets, net of the federal benefit, related to this carryforward prior to any valuation allowances, which included $23.0 million of federal and $4.3 million of state deferred tax assets. Deferred taxes include net deferred tax assets relating to certain state and foreign tax jurisdictions. A reduction of the carrying amount of deferred tax assets by a valuation allowance is required if it is more likely than not that such assets will not be realized. In 2019, a valuation allowance was recorded in China. In 2020, the valuation allowance in China was reversed and a tax attribute valuation allowance was also reversed as the Company expects to utilize the attribute. In 2021, a valuation allowance was recorded on federal and state capital loss carry forwards which are not expected to be utilized before expiration. The following sets forth a reconciliation of the beginning and ending amount of the Company’s valuation allowance (in thousands): 2021 2020 2019 Balance as of January 1 $ 111 $ 298 $ 206 Cost charged to the tax provision 13 70 100 Reductions (41) (248) (10) Reclassification from discontinued operations upon sale of industrial group 26,498 — — Currency translation — (9) 2 Balance as of December 31 $ 26,581 $ 111 $ 298 The Company made net payments for income taxes for the following amounts for the years ended December 31 (in thousands): 2021 2020 2019 Payments made for income taxes, net $ 22,076 $ 21,351 $ 16,744 At December 31, 2021, the Company had approximately $4.2 million of undistributed earnings of foreign subsidiaries. The Company continues to maintain its assertion that all remaining foreign earnings will be indefinitely reinvested. Any excess earnings could be used to grow the Company's foreign operations through launches of new capital projects or additional acquisitions. Determination of the amount of unrecognized deferred U.S. income tax liability related to the Company's remaining unremitted foreign earnings is not practicable due to the complexities associated with its hypothetical calculation. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands): 2021 2020 2019 Balance as of January 1 $ — $ — $ 329 Additions for tax positions of the current year — — — Additions for tax positions of prior years — — — Reductions for tax positions of prior years for: Settlements and changes in judgment — — — Lapses of applicable statute of limitations — — (329) Divestitures and foreign currency translation — — — Balance as of December 31 $ — $ — $ — In 2021 and 2020, the Company did not have any unrecognized tax benefits. In 2019, unrecognized tax benefit of $0.3 million was reversed as a result of the lapse of the statute of limitations. The Company classifies accrued interest and penalties related to unrecognized tax benefits in income tax expense. No interest or penalties have been recognized during the years ended December 31, 2021, 2020 or 2019. The Company and its U.S. subsidiaries file a U.S. federal consolidated income tax return. Foreign and U.S. state jurisdictions have statute of limitations generally ranging from four U.S. federal consolidated income tax return for 2015 through 2018 was closed during 2021 with no changes. No other open periods are currently under examination.

Earnings per Share

Earnings per Share	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings per Share	EARNINGS PER SHARE Basic earnings per share is based on the weighted average number of common shares outstanding. Diluted earnings per share is based on the weighted average number of common shares outstanding, as well as dilutive common shares which include shares issuable pursuant to equity based incentive compensation awards under the equity compensation plans described in Note 12 of the consolidated financial statements. The weighted average number of diluted shares does not include potential anti-dilutive common shares issuable pursuant to equity based incentive compensation awards. There were no anti-dilutive shares outstanding at December 31, 2021. There were 13,000 and 30,000 shares issuable pursuant to equity based incentive compensation awards excluded from the diluted earnings calculation because the effect of their inclusion would be anti-dilutive for the years ended December 31, 2020 and 2019, respectively. The treasury stock method is used to calculate dilutive shares, which reduces the gross number of dilutive shares by the number of shares purchasable from the proceeds of the options assumed to be exercised and the unrecognized expense related to the options, restricted shares, restricted stock units, and performance stock units assumed to have vested. Weighted average shares outstanding for basic and diluted earnings are as follows for the years ended December 31 (in thousands): 2021 2020 2019 Numerator: Income from continuing operations $ 74,516 $ 83,291 $ 59,928 Income (loss) from discontinued operations 1,113 (18,725) 5,163 Net income available to common shareholders $ 75,629 $ 64,566 $ 65,091 Denominator for basic earnings per share: Weighted average shares outstanding 32,873 32,664 32,389 Denominator for diluted earnings per share: Common stock options and stock units 181 254 333 Weighted average shares and conversions 33,054 32,918 32,722

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Leases	LEASES The Company's leases are classified as operating leases and consist of manufacturing facilities, distribution centers, office space, vehicles and equipment. Most of the Company's leases include one or more options to renew, with renewal terms that can extend the respective lease term from one month to fifteen years. The exercise of lease renewal options is at the Company's sole discretion. As of December 31, 2021, the Company's renewal options are not part of the Company's operating lease assets and operating lease liabilities. Certain leases also include options to purchase at fair value the underlying leased asset at the Company's sole discretion. Amounts recognized in the Company's consolidated balance sheet at December 31 were as follows (in thousands): 2021 2020 Assets Operating lease assets $ 18,120 $ 25,229 Liabilities Current Accrued expenses $ 7,239 $ 8,034 Non-current Non-current operating lease liabilities 11,390 17,730 $ 18,629 $ 25,764 The components of lease costs for the years ended December 31 were as follows (in thousands): 2021 2020 2019 Operating lease cost $ 10,977 $ 10,005 $ 10,006 Short-term lease cost 7,153 996 435 Total lease cost $ 18,130 $ 11,001 $ 10,441 Information related to the Company's operating right-of-use assets and related operating lease liabilities for the years ended December 31 were as follows (in thousands): 2021 2020 2019 Cash paid for amounts included in the measurement of operating liabilities $ 9,431 $ 9,502 $ 9,238 Right-of-use assets obtained in exchange for new lease liabilities $ 1,084 $ 12,745 $ 6,364 Information related to the Company's lease terms and discount rates as of December 31 were as follows: 2021 2020 Weighted-average remaining lease term - operating leases 3.0 years 3.6 years Weighted-average discount rate - operating leases 5.2 % 5.2 % The future maturity of the Company's lease liabilities as of December 31, 2021 were as follows (in thousands): 2022 $ 7,931 2023 6,703 2024 3,443 2025 1,155 2026 300 After 2026 492 Total lease payments 20,024 Less: present value discount (1,395) Present value of lease liabilities $ 18,629

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIESThe Company is a party to certain claims and legal actions generally incidental to its business. For certain divestiture transactions completed in prior years, the Company has agreed to indemnify the buyer for various liabilities that may arise after the disposal date. The Company is a party to certain claims made under these indemnification provisions. As of December 31, 2021, the Company has a contingent liability recorded for such provisions related to discontinued operations. Management does not believe that the outcome of this claim, or other claims which are not clearly determinable at the present time, would significantly affect the Company's financial condition or results of operation.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2021
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Segment Information	SEGMENT INFORMATION The Company is organized into four reportable segments on the basis of the production processes, products and services provided by each segment, identified as follows: (i) Renewables, which primarily includes designing, engineering, manufacturing and installation of solar racking and electrical balance of systems; (ii) Residential, which primarily includes roof and foundation ventilation products, centralized mail systems and electronic package solutions, retractable awnings and gutter guards, and rain dispersion products, trims and flashings and other accessories; (iii) Agtech, which provides growing and processing solutions including the designing, engineering, manufacturing and installation of greenhouses, and botanical extraction systems; and (iv) Infrastructure, which primarily includes structural bearings, expansion joints and pavement sealant for bridges, airport runways and roadways, elastomeric concrete, and bridge cable protection systems. When determining the reportable segments, the Company aggregated operating segments based on their similar economic and operating characteristics. During the first quarter of 2021, the Company reassessed its reportable segments. As a result, the Company's former Renewable Energy and Conservation segment was divided into two reportable segments: Renewables and Agtech. The following table illustrates certain measurements used by management to assess the performance of the segments described above as of and for the years ended December 31 (in thousands): 2021 2020 2019 Net sales: Renewables $ 432,096 $ 238,107 $ 229,755 Residential 635,505 522,814 461,630 Agtech 199,161 209,460 143,268 Infrastructure 73,021 62,197 63,580 Total consolidated net sales $ 1,339,783 $ 1,032,578 $ 898,233 Income from operations: Renewables $ 20,158 $ 30,105 $ 24,788 Residential 105,821 94,430 63,047 Agtech (931) 10,633 22,770 Infrastructure 8,911 7,233 6,428 Segments income from operations 133,959 142,401 117,033 Unallocated corporate expenses (36,971) (35,211) (36,221) Total income from operations $ 96,988 $ 107,190 $ 80,812 Depreciation and Amortization Renewables $ 14,682 $ 3,377 $ 3,480 Residential 8,694 8,110 7,906 Agtech 5,279 6,068 2,652 Infrastructure 3,092 3,060 3,129 Unallocated corporate expenses 219 300 390 $ 31,966 $ 20,915 $ 17,557 Total assets Renewables $ 445,486 $ 402,797 $ 127,856 Residential 453,469 407,132 359,657 Agtech 212,038 216,274 118,997 Infrastructure 82,662 80,796 110,611 Unallocated corporate assets 21,246 28,057 174,475 Assets of discontinued operations — 77,438 92,854 $ 1,214,901 $ 1,212,494 $ 984,450 Capital expenditures Renewables $ 4,268 $ 423 $ 252 Residential 4,182 3,313 4,968 Agtech 3,289 720 1,947 Infrastructure 2,097 1,511 1,028 Unallocated corporate expenditures 3,869 7,101 581 $ 17,705 $ 13,068 $ 8,776 The following tables illustrate revenue disaggregated by timing of transfer of control to the customer for the years ended December 31 (in thousands): 2021 Renewables Residential Agtech Infrastructure Total Net sales: Point in Time $ 28,630 $ 630,494 $ 20,157 $ 32,512 $ 711,793 Over Time 403,466 5,011 179,004 40,509 627,990 Total $ 432,096 $ 635,505 $ 199,161 $ 73,021 $ 1,339,783 2020 Renewables Residential Agtech Infrastructure Total Net sales: Point in Time $ 22,833 $ 518,281 $ 52,894 $ 22,781 $ 616,789 Over Time 215,274 4,533 156,566 39,416 415,789 Total $ 238,107 $ 522,814 $ 209,460 $ 62,197 $ 1,032,578 2019 Renewables Residential Agtech Infrastructure Total Net sales: Point in Time $ 2,677 $ 458,006 $ 39,919 $ 26,490 $ 527,092 Over Time 227,078 3,624 103,349 37,090 371,141 Total $ 229,755 $ 461,630 $ 143,268 $ 63,580 $ 898,233 Net sales by region or origin and long-lived assets by region of domicile for the years ended and as of December 31 are as follows (in thousands): 2021 2020 2019 Net sales North America $ 1,318,795 $ 1,018,406 $ 881,432 Asia 20,988 14,172 16,801 Total $ 1,339,783 $ 1,032,578 $ 898,233 Long-lived assets North America $ 97,003 $ 90,685 $ 79,590 Asia 365 476 542 Total $ 97,368 $ 91,161 $ 80,132

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Principles of consolidation	Principles of consolidation The consolidated financial statements include the accounts of Gibraltar Industries, Inc. and subsidiaries (the "Company"). All intercompany accounts and transactions have been eliminated in consolidation.
Use of estimates	Use of estimates The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates due to uncertainty in current economic environment.
Segment Reporting	Segment ReportingThe Company has four reportable segments: Renewables, Residential, Agtech and Infrastructure. In 2021, the Company's former Renewable Energy and Conservation segment was divided into two segments, Renewables and Agtech.
Revenue recognition	Revenue recognition Revenue is recognized when, or as, the Company transfers control of promised products or service to a customer in an amount that reflects the consideration the Company expects to be entitled in exchange for transferring those products or service. Performance obligations satisfied at a point in time and significant judgments The majority of the Company's revenue from contracts with customers is recognized when the Company transfers control of the promised product at a point in time, which is determined when the customer has legal title and the significant risks and rewards of ownership of the asset, and the Company has a present right to payment for the product. The Company allocates the transaction price, which is generally the quoted price per terms of the contract and the consideration the Company expects to receive, to each performance obligation. These products are generally sold with rights of return and these contracts may provide other credits or incentives, which are accounted for as variable consideration. Sales returns, allowances, and customer incentives, including rebates, are treated as reductions to the sales transaction price and based largely 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. Performance obligations satisfied over time and significant judgments For a contract to construct an asset that the customer controls as it is being created or enhanced, or a promise to provide a product that has no alternative use to the Company and the Company has enforceable rights to payment, the Company recognizes revenue over time. For the contracts to construct a certain asset, the Company determines that the customer controls the asset while it is being constructed. For the contracts for products that have no alternative use and for which the Company has an enforceable right to payment, the Company identifies these products as products that are not a standard inventory item or the Company cannot readily direct the product to another customer for use without incurring a significant economic loss, or significant costs to rework the product. The Company determines the transaction price for each contract based on the consideration the Company expects to receive for the promised products and services under the entire contract, which is generally the stated contract price based on an expected cost plus a margin. For the above contracts with customers with respect to which the Company satisfies a performance obligation over time, the Company recognizes revenue based on the extent of progress towards completion of the performance obligation using the cost-to-cost measure of progress. Under the cost-to-cost measure of progress, for which the extent of progress toward completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recognized proportionally as costs are incurred. Costs to fulfill a contract include all direct costs related to contract performance. Selling and administrative expenses are charged to operations as incurred. Provision for loss on an uncompleted performance obligation is recognized in the period in which such loss is determined. The Company regularly reviews the progress under the cost-to-cost method and any adjustments are recognized as necessary. Changes in estimates are recognized as they become known using cumulative catch-up basis. The Company also recognizes revenues from services contracts 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 recognizes revenue on a straight-line basis throughout the contract period. Contract assets and contract liabilities Contract assets primarily represents revenue recognized for performance obligations that have been satisfied but for which amounts receivable have not been billed. These are included as current assets and included within accounts receivable on the Company's consolidated balance sheet. Contract liabilities include payments received from customers in advance of the satisfaction of performance obligations for a contract. The Company does not consider contract advances to be significant financing components as the intent of these payments in advance are for reasons other than providing a significant financing benefit and are customary in the Company's industry. Unearned revenue relates to payments received in advance of performance under the contract and is recognized when the Company performs under the contract. Unearned revenue is presented within accrued expenses in the Company's consolidated balance sheets. Costs to obtain a contract with a customer The Company recognizes an asset for the incremental costs of obtaining a contract with a customer if the Company expects the benefit of those costs to be longer than one year. If the amortization period of the asset is one year or less, the Company recognizes the incremental costs of obtaining a contract as an expense when incurred. These incremental costs include, but are not limited to, sales commissions incurred to obtain a contract with a customer.
Cash and cash equivalents	Cash and cash equivalents All highly liquid investments with a maturity of three months or less are considered cash equivalents.
Accounts receivable and allowance for doubtful accounts and contract assets	Accounts receivable and allowance for doubtful accounts and contract assets Accounts receivable are composed of trade and contract receivables recorded at either the invoiced amount or costs in excess of billings, are expected to be collected within one year, and do not bear interest. The Company’s expected loss allowance methodology for accounts receivable and costs in excess of billings (collectively "accounts receivable") is developed using historical collection experience, current and future economic and market conditions, and a review of the current status of customers' accounts receivables. The Company is exposed to credit losses through sales of products and services. Due to the short-term nature of such accounts receivable, the estimated amount of accounts receivable that may not be collected is based on aging of the accounts receivable balances. Additionally, specific allowance amounts are established to record the appropriate provision for customers that no longer share risk characteristics similar with other accounts receivable. The Company’s monitoring activities include timely account reconciliation, dispute resolution, payment confirmation, consideration of customers' financial condition and macroeconomic conditions. Balances are written off when determined to be u ncollectible after all means of collection have been exhausted and the potential for recovery is considered remote. Estimates are used to determine the allowance. These estimates are based on assessment of anticipated payment and all other historical, current and future information that is reasonably available. The following table summarizes activity recorded within the allowance for doubtful accounts and contract assets balances for the years ended December 31 (in thousands): 2021 2020 2019 Beginning balance $ 3,529 $ 5,951 $ 6,170 Adoption of ASU 2016-13, cumulative-effect adjustment to retained earnings at January 1, 2020 — 385 — Bad debt expense, net of recoveries 898 1,321 2,577 Accounts written off against allowance and other adjustments (689) (4,128) (2,796) Ending balance $ 3,738 $ 3,529 $ 5,951 Concentrations of credit risk in accounts receivable are limited to those from significant customers that are believed to be financially sound. As of December 31, 2021 and 2020, the Company's most significant customer is a home improvement retailer. The
Inventories	InventoriesInventories are valued at the lower of cost, determined using the first-in, first-out method, or net realizable value. Shipping and handling costs are recognized as a component of cost of sales.
Property, plant, and equipment	Property, plant, and equipmentProperty, plant, and equipment are stated at cost and depreciated over their estimated useful lives using the straight-line method. Interest is capitalized in connection with construction of qualified assets. Expenditures that exceed an established dollar threshold and that extend the useful lives of assets are capitalized, while repair and maintenance costs are expensed as incurred. The estimated useful lives of land improvements, buildings, and building improvements are 15 to 40 years, while the estimated useful lives for machinery and equipment are 3 to 20 years.
Acquisition related assets and liabilities	Acquisition related assets and liabilities Accounting for the acquisition of a business as a purchase transaction requires an allocation of the purchase price to the assets acquired and the liabilities assumed in the transaction at their respective estimated fair values. The most complex estimations of individual fair values are those involving long-lived assets, such as property, plant, and equipment and intangible assets. The Company uses all available information to make these fair value determinations and engages independent valuation specialists to assist in the fair value determination of the acquired long-lived assets.
Goodwill and other intangible assets	Goodwill and other intangible assets The Company tests goodwill for impairment at the reporting unit level on an annual basis at October 31, or more frequently if an event occurs, or circumstances change, that indicate that the fair value of a reporting unit could be below its carrying value. The reporting units are at the component level, or one level below the operating segment level. Goodwill is assigned to each reporting unit as of the date the reporting unit is acquired and based upon the expected synergies of the acquisition. The Company may elect to perform a qualitative assessment that considers economic, industry and company-specific factors for some or all of our selected reporting units. If, after completing the assessment, it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying value, the Company proceeds to a quantitative test. The Company may also elect to perform a quantitative test instead of a qualitative test for any or all of the Company's reporting units. The quantitative impairment test consists of comparing the fair value of a reporting unit, determined using two valuation techniques, to its carrying value. If the carrying value of the reporting unit exceeds its fair value, goodwill is
Impairment of long-lived assets	Impairment of long-lived assetsLong-lived assets, including acquired identifiable intangible assets with finite useful lives, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of those assets may not be recoverable. In specific situations, when the Company has selected individual assets to be sold or scrapped, the Company obtains market value data for those specific assets and measures and records the impairment loss based on such data. Otherwise, the Company uses undiscounted cash flows to determine whether impairment exists and measures any impairment loss by approximating fair value using acceptable valuation techniques, including discounted cash flow models and third-party appraisals. For additional disclosure on impairment of the Company's long-lived assets refer to Note 7 "Goodwill and Related Intangible Assets" and Note 15 "Exit Activity Costs and Asset Impairments."
Leases	Leases The Company determines if an agreement is, or contains, a lease at the inception of the agreement. At lease commencement, the Company recognizes a right-of-use asset and a lease liability for leases with terms greater than twelve months. The initial lease liability is recognized at the present value of remaining lease payments over the lease term. Leases with an initial term of twelve months or less are not recorded on the Company's consolidated balance sheet. The Company recognizes lease expense for operating leases on a straight-line basis over the lease term. The Company combines lease and non-lease components, such as common area maintenance costs, in calculating the related asset and lease liabilities for all underlying asset groups. Operating lease cost is included in income from operations and includes short-term leases and variable lease costs which are immaterial.
Deferred charges	Deferred chargesDeferred charges associated with initial costs incurred to enter into new debt arrangements are included as a component of long-term debt and are amortized as a part of interest expense over the terms of the associated debt agreements.
Advertising	AdvertisingThe Company expenses advertising costs as incurred.
Foreign currency transactions and translation	Foreign currency transactions and translationThe assets and liabilities of the Company’s foreign subsidiaries are translated into U.S. dollars at the rate of exchange in effect at the balance sheet date. Income and expense items are translated at the average exchange rates prevailing during the period.
Income taxes	Income taxesThe provision for income taxes is determined using the asset and liability approach. Under this approach, deferred income taxes represent the expected future tax consequences of temporary differences between the carrying amounts and tax basis of assets and liabilities. The Company records a valuation allowance to reduce deferred tax assets when uncertainty exists regarding their realization.
Equity-based compensation	Equity-based compensationThe Company measures the cost of equity-based compensation based on grant date fair value and recognizes the cost over the period in which the employee is required to provide service in exchange for the award reduced by forfeitures. Equity-based compensation consists of grants of stock options, deferred stock units, common stock, restricted stock units, and performance stock units. Equity-based compensation expense is included as a component of selling, general, and administrative expenses.
Recent accounting pronouncements	Recent accounting pronouncements Recent Accounting Pronouncements Adopted Standard Description Financial Statement Effect or Other Significant Matters ASU No. 2019-12 Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes The amendments in this update simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740 and improve consistent application by clarifying and amending existing guidance. The amendments of this standard are effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The standard was effective for the Company as of January 1, 2021. The Company adopted the amendments in this update and the adoption did not have a material impact to the Company’s financial statements. Date of adoption: Q1 2021 Recent Accounting Pronouncements Not Yet Adopted

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Summary Of Activity Recorded Within The Allowance For Doubtful Accounts	The following table summarizes activity recorded within the allowance for doubtful accounts and contract assets balances for the years ended December 31 (in thousands): 2021 2020 2019 Beginning balance $ 3,529 $ 5,951 $ 6,170 Adoption of ASU 2016-13, cumulative-effect adjustment to retained earnings at January 1, 2020 — 385 — Bad debt expense, net of recoveries 898 1,321 2,577 Accounts written off against allowance and other adjustments (689) (4,128) (2,796) Ending balance $ 3,738 $ 3,529 $ 5,951
Property, Plant and Equipment	The table below sets forth the depreciation expense recognized during the years ended December 31 (in thousands): 2021 2020 2019 Depreciation expense $ 13,110 $ 11,252 $ 10,666 Components of property, plant, and equipment at December 31 consisted of the following (in thousands): 2021 2020 Land and land improvements $ 4,634 $ 4,605 Building and improvements 42,526 41,164 Machinery and equipment 194,015 188,853 Construction in progress 20,293 10,458 Property, plant, and equipment, gross 261,468 245,080 Less: accumulated depreciation (164,583) (155,518) Property, plant, and equipment, net $ 96,885 $ 89,562
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	Recent Accounting Pronouncements Adopted Standard Description Financial Statement Effect or Other Significant Matters ASU No. 2019-12 Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes The amendments in this update simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740 and improve consistent application by clarifying and amending existing guidance. The amendments of this standard are effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The standard was effective for the Company as of January 1, 2021. The Company adopted the amendments in this update and the adoption did not have a material impact to the Company’s financial statements. Date of adoption: Q1 2021 Recent Accounting Pronouncements Not Yet Adopted

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset and Liability	The following table presents the ending and beginning balances of costs in excess of billings, billings in excess of cost and unearned revenue, respectively, as of December 31, (in thousands): 2021 2020 2019 Costs in excess of billings $ 54,437 $ 26,915 $ 20,607 Billings in excess of cost (46,711) (34,702) (47,598) Unearned revenue (3,681) (21,325) (15,389)

Accounts Receivable (Tables)

Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Schedule of Accounts Receivable	Accounts receivable at December 31 consisted of the following (in thousands): 2021 2020 Trade accounts receivable $ 185,745 $ 174,604 Costs in excess of billings 54,437 26,915 Total accounts receivables 240,182 201,519 Less allowance for doubtful accounts (3,738) (3,529) Accounts receivable, net $ 236,444 $ 197,990

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2021
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories at December 31 consisted of the following (in thousands): 2021 2020 Raw material $ 135,558 $ 66,018 Work-in-process 5,858 5,382 Finished goods 39,256 31,205 Gross inventory $ 180,672 $ 102,605 Less reserves (4,465) (4,298) Total inventories $ 176,207 $ 98,307
Summary of Activity within the Reserve for Excess, Obsolete, and Slow Moving Inventory	The following table summarizes activity recorded within the reserve for excess, obsolete and slow moving inventory for the years ended December 31 (in thousands): 2021 2020 2019 Beginning balance $ 4,161 $ 3,463 $ 2,971 Excess, obsolete and slow moving inventory expense 215 355 1,134 Scrapped inventory and other adjustments 24 343 (642) Ending balance $ 4,400 $ 4,161 $ 3,463

Property, Plant, and Equipment

Property, Plant, and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Components of Property, Plant, and Equipment	The table below sets forth the depreciation expense recognized during the years ended December 31 (in thousands): 2021 2020 2019 Depreciation expense $ 13,110 $ 11,252 $ 10,666 Components of property, plant, and equipment at December 31 consisted of the following (in thousands): 2021 2020 Land and land improvements $ 4,634 $ 4,605 Building and improvements 42,526 41,164 Machinery and equipment 194,015 188,853 Construction in progress 20,293 10,458 Property, plant, and equipment, gross 261,468 245,080 Less: accumulated depreciation (164,583) (155,518) Property, plant, and equipment, net $ 96,885 $ 89,562

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2021
Business Combinations [Abstract]
Schedule of Allocation of the Purchase Price Consideration of the Fair Value of Assets Acquired and Liabilities Assumed	The allocation of the TerraSmart purchase consideration to the estimated fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands): Cash $ 1,491 Working capital 5,569 Property, plant and equipment 11,446 Acquired intangible assets 64,150 Other assets 1,854 Other liabilities (1,640) Goodwill 140,997 Fair value of purchase consideration $ 223,867 The allocation of the purchase consideration to the estimated fair value of the assets acquired and liabilities assumed in the acquisitions of Sunfig, Architectural Mailboxes, Delta Separations and Thermo is as follows as of the respective date of the acquisition (in thousands): Cash $ 179 Working capital (15,377) Property, plant and equipment 1,740 Acquired intangible assets 38,066 Other current assets 1,528 Other assets 2,381 Other liabilities (5,576) Goodwill 62,161 Fair value of purchase consideration $ 85,102 The allocation of the purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands): Cash $ 4,154 Working capital (1,515) Property, plant and equipment 1,059 Acquired intangible assets 3,000 Other assets 508 Other liabilities (1,081) Goodwill 6,436 Fair value of purchase consideration $ 12,561
Schedule of Acquired Intangible Assets	The intangible assets acquired in the TerraSmart acquisition consisted of the following (in thousands): Fair Value Weighted-Average Amortization Period Trademarks $ 20,830 Indefinite Technology 1,940 12 years Customer relationships 35,110 12 years Backlog 6,270 Less than 1 year Total $ 64,150 The intangible assets acquired in the acquisitions of Sunfig, Architectural Mailboxes, Delta Separations and Thermo consisted of the following as of the respective date of the acquisition (in thousands): Fair Value Weighted-Average Amortization Period Trademarks $ 8,100 Indefinite Trademarks 1,177 3 years Technology 8,345 5 - 15 years Customer relationships 18,480 11 - 13 years Non-compete agreements 1,036 5 years Backlog 928 Less than 1 year Total $ 38,066 The intangible assets acquired in this acquisition consisted of the following as of the date of the acquisition (in thousands): Fair Value Weighted-Average Amortization Period Trademarks $ 1,400 Indefinite Technology 900 7 years Customer relationships 700 6 years Total $ 3,000
Schedule of Business Combination Costs	acquisition-related costs consisted of the following for the years ended December 31 (in thousands): 2021 2020 2019 Cost of sales $ — $ 634 $ 401 Selling, general and administrative costs 949 3,230 1,517 Total acquisition related costs $ 949 $ 3,864 $ 1,918

Goodwill and Related Intangib_2

Goodwill and Related Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill for the years ended December 31 were as follows (in thousands): Renewables Residential Agtech Infrastructure Total Balance at December 31, 2019 $ 44,816 $ 198,075 $ 32,786 $ 31,678 $ 307,355 Acquired goodwill 147,004 7,377 50,862 — 205,243 Adjustments to prior year acquisitions — — 578 — 578 Foreign currency translation 707 — 396 — 1,103 Balance at December 31, 2020 $ 192,527 $ 205,452 $ 84,622 31,678 $ 514,279 Adjustments to prior year acquisitions (2,433) — 323 — (2,110) Foreign currency translation (1,414) — 187 — (1,227) Balance at December 31, 2021 $ 188,680 $ 205,452 $ 85,132 31,678 $ 510,942
Schedule of Acquired Intangible Assets	Acquired intangible assets consist of the following (in thousands): December 31, 2021 December 31, 2020 Gross Accumulated Gross Accumulated Indefinite-lived intangible assets: Trademarks $ 52,700 $ — $ 56,570 $ — Finite-lived intangible assets: Trademarks 5,521 4,011 5,818 3,385 Unpatented technology 38,474 20,656 38,752 17,765 Customer relationships 108,591 39,832 98,500 31,580 Non-compete agreements 2,686 1,969 4,885 1,747 Backlog 7,200 7,200 7,228 911 162,472 73,668 155,183 55,388 Total acquired intangible assets $ 215,172 $ 73,668 $ 211,753 $ 55,388
Schedule of Intangible Assets Amortization Expense	The following table summarizes amortization expense for the years ended December 31 (in thousands): 2021 2020 2019 Amortization expense $ 18,856 $ 9,663 $ 6,891
Schedule of Amortization Expense	Amortization expense related to acquired intangible assets for the next five years ended December 31 is estimated as follows (in thousands): 2022 2023 2024 2025 2026 Amortization expense $ 12,124 $ 11,195 $ 11,014 $ 10,780 $ 9,161

Accrued Expenses (Tables)

Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2021
Accrued Liabilities, Current [Abstract]
Accrued Expenses	Accrued expenses at December 31 consist of the following (in thousands): 2021 2020 Compensation $ 15,293 $ 18,131 Customer rebates 15,253 11,575 Insurance 7,310 6,915 Current operating lease liability 7,239 8,034 Interest and taxes 5,463 1,850 Unearned revenue 3,681 21,325 Current portion of cash-settled share-based liabilities 2,947 3,504 Other 10,807 12,171 Total accrued expenses $ 67,993 $ 83,505

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Long-term Debt, Unclassified [Abstract]
Schedule of Debt	Long-term debt consists of the following (in thousands): December 31, 2021 December 31, 2020 Revolving credit facility $ 24,500 $ 85,000 Other debt — 636 Less unamortized debt issuance costs (719) — Total debt $ 23,781 $ 85,636
Schedule of Cash Paid for Interest	Total cash paid for interest in the years ended December 31 was (in thousands): 2021 2020 2019 Interest expense, net $ 1,639 $ 703 $ 2,323 Interest income 269 276 764 Other non-cash adjustments (345) (345) (380) Cash paid for interest $ 1,563 $ 634 $ 2,707

Pension and Other Postretirem_2

Pension and Other Postretirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Schedule of Total Expense for All Retirement Plans	Total expense for all retirement plans for the years ended December 31 was (in thousands): 2021 2020 2019 401(k) plan $ 3,196 $ 2,403 $ 2,031 Multiemployer and other defined benefit and pension plans 78 70 195 Postretirement healthcare plan 411 351 346 Total retirement plan expense $ 3,685 $ 2,824 $ 2,572
Amounts Recognized in the Consolidated Financial Statements	Amounts recognized in the consolidated financial statements consisted of (in thousands): 2021 2020 Accrued postretirement benefit liability Current portion $ 358 $ 335 Long term portion 5,844 6,108 Pre-tax accumulated other comprehensive loss – unamortized post-retirement healthcare costs (1,942) (2,137) Net amount recognized $ 4,260 $ 4,306
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Changes in the Accumulated Postretirement Benefit Obligation	The following table presents the changes in the accumulated postretirement benefit obligation related to the Company’s unfunded postretirement healthcare benefits at December 31 (in thousands): 2021 2020 Projected benefit obligation at January 1 $ 6,443 $ 6,024 Service cost — 10 Interest cost 125 172 Plan amendments 162 — Actuarial (gain) loss (200) 580 Benefits paid, net of contributions (328) (343) Projected benefit obligation at December 31 6,202 6,443 Fair value of plan assets — — Under funded status (6,202) (6,443) Unamortized prior service cost 412 294 Unrecognized actuarial loss 1,530 1,843 Net amount recognized $ (4,260) $ (4,306)
Schedule of Net Periodic Pension and Other Post-Retirement Benefit Costs	Components of net periodic postretirement benefit cost charged to expense for the years ended December 31 were as follows (in thousands): 2021 2020 2019 Service cost $ — $ 10 $ 17 Interest cost 125 172 234 Amortization of unrecognized prior service cost 44 44 44 Loss amortization ( 2 ) 113 64 51 Net periodic benefit cost $ 282 $ 290 $ 346 Assumptions used to calculate the benefit obligation: Discount rate 2.4 % 2.0 % 2.9 % Annual rate of increase in the per capita cost of: Medical costs before age 65 ( 1) 7.0 % 7.0 % 6.8 % Medical costs after age 65 ( 1) 4.5 % 4.5 % 4.5 % Prescription drug costs ( 1) 7.0 % 7.0 % 7.0 % (1) It was assumed that these rates would gradually decline to 3.8% by 2075. (2) Actuarial (gains)/losses are amortized utilizing the corridor approach. Differences between actual experience and the actuarial assumptions are reflected in (gain)/loss. If the total net (gain) or loss exceeds 10 percent of the greater of the accumulated postretirement benefit obligation or plan assets, this excess must be amortized over the average remaining service period of the active plan participants. If most of the plan participants are inactive, the amortization period is the expected future lifetime of inactive plan participants.
Expected Benefit Payments from the Plan	Expected benefit payments from the plan for the years ended December 31 are as follows (in thousands): 2022 2023 2024 2025 2026 Years 2027 - 2031 Expected benefit payments $ 358 $ 369 $ 377 $ 389 $ 401 $ 1,961

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Components of Accumulated Other Comprehensive Income (Loss)	The cumulative balance of each component of accumulated other comprehensive income (loss) is as follows (in thousands): Foreign Currency Translation Adjustment Minimum post retirement benefit plan adjustments Total Pre-Tax Amount Tax (Benefit) Expense Accumulated Other Comprehensive Income (Loss) Balance at December 31, 2019 $ (4,173) $ (1,939) $ (6,112) $ (721) $ (5,391) Minimum post retirement benefit plan adjustments — (487) (487) (116) (371) Foreign currency translation adjustment 3,301 — 3,301 — 3,301 Balance at December 31, 2020 $ (872) $ (2,426) $ (3,298) $ (837) $ (2,461) Minimum post retirement benefit plan adjustments — 179 179 43 136 Foreign currency translation adjustment 2,512 — 2,512 — 2,512 Balance at December 31, 2021 $ 1,640 $ (2,247) $ (607) $ (794) $ 187

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]
Summary of Compensation Expense Connection with Awards	The Company recognized the following compensation expense in connection with awards that vested under the 2018 Plan, the 2015 Plan, the Prior Plan, and the Non-Employee Directors Plan along with the related tax benefits recognized during the years ended December 31 (in thousands): 2021 2020 2019 Expense recognized under the Prior Plan $ 29 $ 40 $ 192 Expense recognized under the 2015 Plan 1,186 1,932 5,077 Expense recognized under the 2018 Plan 6,597 5,441 6,731 Expense recognized under the Non-Employee Directors Plan 840 760 570 Total stock compensation expense $ 8,652 $ 8,173 $ 12,570 Tax benefits recognized related to stock compensation expense $ 2,189 $ 2,272 $ 3,136
Schedule of Number of Awards and Weighted Average Grant Date Fair Value	The following table provides the number of stock units and common stock granted during the years ended December 31, along with the weighted-average grant-date fair value of each award: 2021 2020 2019 Awards Number of Weighted Number of Weighted Number of Weighted Deferred stock units 7,536 $ 83.58 12,402 $ 45.98 7,509 $ 37.95 Common stock 2,512 $ 83.58 4,134 $ 45.98 7,509 $ 37.95 Restricted stock units 72,243 $ 79.28 81,397 $ 56.81 152,472 $ 39.73 Performance stock units 62,778 $ 87.84 160,426 $ 55.98 183,908 $ 40.49
Summary of Ranges of Outstanding and Exercisable Options	The following table summarizes the ranges of outstanding and exercisable options at December 31, 2021: Range of Exercise Prices Options Weighted Average Weighted Options Weighted $39.00– $44.00 5,000 5.33 $ 39.55 5,000 $ 39.55
Summary of Stock Options Transactions	The following table summarizes information about stock option transactions: Options Weighted Weighted Average Aggregate Balance at January 1, 2019 159,759 $ 17.70 Exercised (42,350) 11.57 Balance at December 31, 2019 117,409 $ 19.91 Exercised (75,909) 14.73 Balance at December 31, 2020 41,500 $ 29.38 Exercised (36,500) 27.99 Balance at December 31, 2021 5,000 $ 39.55 5.33 $ 135,650
Summary of Information About Restricted Stock Units and Weighted Average Grant Date Fair Value	The following table summarizes information about non-vested restricted stock units, performance stock units (that will convert to shares upon vesting) and common stock: Restricted Weighted Common Stock Weighted Performance Stock Units (1) (2) Weighted Average Grant Date Fair Value Deferred Stock Units (3) Weighted Average Grant Date Fair Value Balance at December 31, 2020 237,442 $ 41.15 — $ — 407,289 $ 45.00 47,154 $ 37.30 Granted 72,243 $ 79.28 2,512 $ 83.58 62,778 $ 87.84 7,536 $ 83.58 Adjustments — $ — — $ — 7,400 $ 52.40 — $ — Vested (83,028) $ 43.09 (2,512) $ 83.58 (106,826) $ 35.06 (2,218) $ 36.47 Forfeited (22,073) $ 49.78 — $ — (7,167) $ 46.87 — $ — Balance at December 31, 2021 204,584 $ 52.90 — $ — 363,474 $ 55.44 52,472 $ 43.99 (1) The Company’s performance stock units (“PSUs”) represent shares granted for which the final number of shares earned depends on financial performance or market conditions. The number of shares to be issued may vary between 0% and 200% of the number of PSUs granted depending on the relative achievement to targeted thresholds. The Company's PSUs with a financial performance condition are based on either the Company’s return on invested capital (“ROIC”) over a one-year period performance period or other criteria such as revenue, gross profit, and operating profit thresholds over a two-year or three-year performance period. The Company's PSUs with a market condition are based on the ranking of the Company’s total shareholder return (“TSR”) performance, on a percentile basis, over a three year performance period compared to the S&P Small Cap Industrial sector, over the same three year performance period. (2) The Company's PSU adjustments during 2021 represent shares earned for achievement in excess of targeted thresholds at the end of the performance period. The Company's PSUs with a financial performance condition, based on the Company ROIC, granted in 2020 accounted for the 7,400 PSUs that will be converted to shares and issued to recipients in the first quarter of 2023 at 109.5% of the target amount granted, based on the Company's actual ROIC compared to ROIC target for the performance period ended December 31, 2020. (3) Vested and issuable upon termination from service as a member of the Company's Board of Directors.
Aggregate Intrinsic Value of Options Exercised and Aggregate Fair Value of Restricted Stock Units and Restricted Shares that Vested	The following table sets forth the aggregate intrinsic value of options exercised and aggregate fair value of restricted stock units and restricted shares that vested during the years ended December 31 (in thousands): 2021 2020 2019 Aggregate intrinsic value of options exercised $ 2,103 $ 3,812 $ 1,371 Aggregate fair value of vested restricted stock units $ 6,320 $ 11,851 $ 10,017 Aggregate fair value of vested common and restricted shares $ 370 $ 190 $ 285 Aggregate fair value of vested deferred stock units $ 630 $ 570 $ 285
Cash Paid to Settle Liability Awards	The following table provides the number of restricted stock units credited to active participant accounts, balance of vested and unvested restricted stock units within active participant accounts, payments made with respect to restricted stock units issued under the MSPP, and MSPP expense during years ended December 31: 2021 2020 2019 Restricted stock units credited 30,475 57,046 61,369 Restricted stock units balance, vested and unvested 223,892 231,343 415,760 Share-based liabilities paid, in thousands $ 4,915 $ 15,401 $ 6,543 MSPP expense, in thousands $ 6,034 $ 4,518 $ 2,699

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Discontinued Operations	The following carrying amounts of the major classes of assets and liabilities included in discontinued operations related to the Industrial business have been segregated from the Company's continuing operations and are reported as assets and liabilities of discontinued operations held for sale, respectively, in the consolidated balance sheet at December 31, 2020 (in thousands): December 31, 2020 Assets Accounts receivable, net $ 11,261 Inventories, net 13,041 Prepaid expenses and other current assets 21,310 Total current assets (1) 45,612 Property, plant, and equipment, net 16,999 Operating lease assets 6,470 Goodwill 22,475 Acquired intangibles 15,482 Loss recognized on classification as held for sale (29,600) Total noncurrent assets (1) 31,826 Total assets classified as held for sale $ 77,438 Liabilities Accounts payable $ 10,708 Accrued expenses 9,274 Total current liabilities (1) 19,982 Deferred income taxes 24,657 Non-current operating lease liabilities 4,639 Other non-current liabilities 17 Total noncurrent liabilities (1) 29,313 Total liabilities classified as held for sale $ 49,295 (1) The assets and liabilities of the discontinued operations were classified as current on the December 31, 2020 consolidated balance sheet, as it was probable that the sale would occur and proceeds would be collected within one year. Components of the income (loss) from discontinued operations before taxes, including the interest allocated to discontinued operations, for the years ended December 31 were as follows (in thousands): 2021 2020 2019 Net sales $ 20,391 $ 128,915 $ 150,225 Operating expenses 17,493 115,822 143,335 Loss and adjustments to loss on disposal 1,419 29,600 — Interest expense allocation — 95 208 Income (loss) from discontinued operations before taxes $ 1,479 $ (16,602) $ 6,682 On June 30, 2020, the Company sold its self-guided apartment tour application business to a third party from its Residential segment. The $2.0 million net proceeds from the sale resulted in pre-tax net gain of $1.9 million and has been presented within other (income) expense in the consolidated statements of income. This divestiture does not meet the criteria to be reported as a discontinued operation nor did it have a major effect on the Company's operations.

Exit Activity Costs and Asset_2

Exit Activity Costs and Asset Impairments (Tables)	12 Months Ended
	Dec. 31, 2021
Restructuring and Related Activities [Abstract]
Reconciliation of Liability for Exit Activity Costs Relating to Facility Consolidation Efforts	The following table sets forth the exit activity costs and asset impairment charges incurred by segment during the years ended December 31 related to the restructuring activities described above (in thousands): 2021 2020 2019 Exit activity costs Asset impairment charges Total Exit activity costs Asset impairment charges Total Exit activity costs Asset impairment charges Total Renewables $ 4,769 $ 1,193 $ 5,962 $ 15 $ — $ 15 $ 66 $ — $ 66 Residential 393 — 393 731 9 740 3,440 417 3,857 Agtech 1,687 — 1,687 860 72 932 — (9) (9) Infrastructure 26 — 26 226 — 226 — — — Corporate 145 — 145 375 — 375 1,660 — 1,660 Total exit activity costs & asset impairments $ 7,020 $ 1,193 $ 8,213 $ 2,207 $ 81 $ 2,288 $ 5,166 $ 408 $ 5,574 The following table reconciles the beginning and ending liability for exit activity costs relating to the Company’s facility consolidation efforts (in thousands): 2021 2020 Balance as of January 1 $ 1,030 $ 2,083 Exit activity costs recognized 7,020 2,207 Cash payments (7,778) (3,260) Balance as of December 31 $ 272 $ 1,030
Summary of Exit Activity Costs and Asset Impairments Recorded in the Consolidated Statements of Operations	The following table provides a summary of where the above exit activity costs and asset impairments are recorded in the consolidated statements of operations for the years ended December 31 (in thousands): 2021 2020 2019 Cost of sales $ 6,176 $ 1,059 $ 767 Selling, general, and administrative expense 2,037 1,229 4,807 Total exit activity costs and asset impairments $ 8,213 $ 2,288 $ 5,574

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Components of Income (Loss) Before Taxes from Continuing Operations	The components of income before taxes from continuing operations consisted of the following for the years ended December 31 (in thousands): 2021 2020 2019 Domestic $ 93,155 $ 108,930 $ 78,351 Foreign 6,407 (1,171) (270) Income before taxes from continuing operations $ 99,562 $ 107,759 $ 78,081
Summary of Provision for Income Taxes for Continuing Operations	The provision for income taxes from continuing operations for the years ended December 31 consisted of the following (in thousands): 2021 2020 2019 Current: U.S. Federal $ 16,137 $ 16,505 $ 10,394 State 5,009 4,071 3,547 Foreign 932 106 92 Total current 22,078 20,682 14,033 Deferred: U.S. Federal 1,766 3,620 3,740 State 134 672 486 Foreign 1,068 (506) (106) Total deferred 2,968 3,786 4,120 Provision for income taxes $ 25,046 $ 24,468 $ 18,153
(Benefit of) Provision for Income Taxes from Discontinued Operations	The provision for income taxes from discontinued operations for the years ended December 31 consisted of the following (in thousands): 2021 2020 2019 Current: U.S. Federal $ 362 $ 1,345 $ 885 State 139 57 4 Foreign 214 1,725 1,447 Total current 715 3,127 2,336 Deferred: U.S. Federal (340) (876) (823) State 2 10 23 Foreign (11) (138) (17) Total deferred (349) (1,004) (817) Provision for income taxes $ 366 $ 2,123 $ 1,519
Provision for Income Taxes from Continuing Operations Differs from the Federal Statutory Rate	The provision for income taxes from continuing operations differs from the federal statutory rate of 21% due to the following (in thousands) for the years ended December 31: 2021 2020 2019 Statutory rate 20,908 21.0 % 22,629 21.0 % 16,397 21.0 % State taxes, less federal effect 4,068 4.1 % 3,650 3.4 % 3,194 4.1 % Federal tax credits (587) (0.6) % (1,064) (1.0) % (1,621) (2.1) % Excess tax benefit on stock based compensation (2,039) (2.0) % (1,674) (1.6) % (871) (1.1) % Uncertain tax positions — — % — — % (260) (0.3) % Executive compensation 1,781 1.8 % 1,114 1.0 % 1,132 1.4 % Change in valuation allowance — — % (130) (0.1) % 88 0.1 % Other 915 0.9 % (57) — % 94 0.1 % $ 25,046 25.2 % $ 24,468 22.7 % $ 18,153 23.2 %
Deferred Tax Liabilities (Assets)	Deferred tax liabilities at December 31 consist of the following (in thousands): 2021 2020 Depreciation $ 9,633 $ 7,697 Goodwill 48,265 41,842 Intangible assets 1,657 5,632 Other 5,298 6,878 Gross deferred tax liabilities 64,853 62,049 Capital loss carryforward (27,328) — Equity compensation (8,236) (7,496) Other (15,641) (15,682) Gross deferred tax assets (51,205) (23,178) Valuation allowances 26,581 111 Deferred tax assets, net of valuation allowances (24,624) (23,067) Net deferred tax liabilities $ 40,229 $ 38,982
Summary of Valuation Allowance	The following sets forth a reconciliation of the beginning and ending amount of the Company’s valuation allowance (in thousands): 2021 2020 2019 Balance as of January 1 $ 111 $ 298 $ 206 Cost charged to the tax provision 13 70 100 Reductions (41) (248) (10) Reclassification from discontinued operations upon sale of industrial group 26,498 — — Currency translation — (9) 2 Balance as of December 31 $ 26,581 $ 111 $ 298
Interest (Net of Federal Tax Benefit) and Penalties Recognized
Income Taxes Paid, Net of Tax Refunds	The Company made net payments for income taxes for the following amounts for the years ended December 31 (in thousands): 2021 2020 2019 Payments made for income taxes, net $ 22,076 $ 21,351 $ 16,744
Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands): 2021 2020 2019 Balance as of January 1 $ — $ — $ 329 Additions for tax positions of the current year — — — Additions for tax positions of prior years — — — Reductions for tax positions of prior years for: Settlements and changes in judgment — — — Lapses of applicable statute of limitations — — (329) Divestitures and foreign currency translation — — — Balance as of December 31 $ — $ — $ —

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Schedule of Computation of Basic and Diluted Earnings per Share	Weighted average shares outstanding for basic and diluted earnings are as follows for the years ended December 31 (in thousands): 2021 2020 2019 Numerator: Income from continuing operations $ 74,516 $ 83,291 $ 59,928 Income (loss) from discontinued operations 1,113 (18,725) 5,163 Net income available to common shareholders $ 75,629 $ 64,566 $ 65,091 Denominator for basic earnings per share: Weighted average shares outstanding 32,873 32,664 32,389 Denominator for diluted earnings per share: Common stock options and stock units 181 254 333 Weighted average shares and conversions 33,054 32,918 32,722

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Assets And Liabilities, Lessee	Amounts recognized in the Company's consolidated balance sheet at December 31 were as follows (in thousands): 2021 2020 Assets Operating lease assets $ 18,120 $ 25,229 Liabilities Current Accrued expenses $ 7,239 $ 8,034 Non-current Non-current operating lease liabilities 11,390 17,730 $ 18,629 $ 25,764
Lease, Cost	The components of lease costs for the years ended December 31 were as follows (in thousands): 2021 2020 2019 Operating lease cost $ 10,977 $ 10,005 $ 10,006 Short-term lease cost 7,153 996 435 Total lease cost $ 18,130 $ 11,001 $ 10,441 Information related to the Company's operating right-of-use assets and related operating lease liabilities for the years ended December 31 were as follows (in thousands): 2021 2020 2019 Cash paid for amounts included in the measurement of operating liabilities $ 9,431 $ 9,502 $ 9,238 Right-of-use assets obtained in exchange for new lease liabilities $ 1,084 $ 12,745 $ 6,364 Information related to the Company's lease terms and discount rates as of December 31 were as follows: 2021 2020 Weighted-average remaining lease term - operating leases 3.0 years 3.6 years Weighted-average discount rate - operating leases 5.2 % 5.2 %
Lessee, Operating Lease, Liability, Maturity	The future maturity of the Company's lease liabilities as of December 31, 2021 were as follows (in thousands): 2022 $ 7,931 2023 6,703 2024 3,443 2025 1,155 2026 300 After 2026 492 Total lease payments 20,024 Less: present value discount (1,395) Present value of lease liabilities $ 18,629

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Measurements Used by Management to Assess Performance of Segments	The following table illustrates certain measurements used by management to assess the performance of the segments described above as of and for the years ended December 31 (in thousands): 2021 2020 2019 Net sales: Renewables $ 432,096 $ 238,107 $ 229,755 Residential 635,505 522,814 461,630 Agtech 199,161 209,460 143,268 Infrastructure 73,021 62,197 63,580 Total consolidated net sales $ 1,339,783 $ 1,032,578 $ 898,233 Income from operations: Renewables $ 20,158 $ 30,105 $ 24,788 Residential 105,821 94,430 63,047 Agtech (931) 10,633 22,770 Infrastructure 8,911 7,233 6,428 Segments income from operations 133,959 142,401 117,033 Unallocated corporate expenses (36,971) (35,211) (36,221) Total income from operations $ 96,988 $ 107,190 $ 80,812 Depreciation and Amortization Renewables $ 14,682 $ 3,377 $ 3,480 Residential 8,694 8,110 7,906 Agtech 5,279 6,068 2,652 Infrastructure 3,092 3,060 3,129 Unallocated corporate expenses 219 300 390 $ 31,966 $ 20,915 $ 17,557 Total assets Renewables $ 445,486 $ 402,797 $ 127,856 Residential 453,469 407,132 359,657 Agtech 212,038 216,274 118,997 Infrastructure 82,662 80,796 110,611 Unallocated corporate assets 21,246 28,057 174,475 Assets of discontinued operations — 77,438 92,854 $ 1,214,901 $ 1,212,494 $ 984,450 Capital expenditures Renewables $ 4,268 $ 423 $ 252 Residential 4,182 3,313 4,968 Agtech 3,289 720 1,947 Infrastructure 2,097 1,511 1,028 Unallocated corporate expenditures 3,869 7,101 581 $ 17,705 $ 13,068 $ 8,776
Disaggregation of Revenue	The following tables illustrate revenue disaggregated by timing of transfer of control to the customer for the years ended December 31 (in thousands): 2021 Renewables Residential Agtech Infrastructure Total Net sales: Point in Time $ 28,630 $ 630,494 $ 20,157 $ 32,512 $ 711,793 Over Time 403,466 5,011 179,004 40,509 627,990 Total $ 432,096 $ 635,505 $ 199,161 $ 73,021 $ 1,339,783 2020 Renewables Residential Agtech Infrastructure Total Net sales: Point in Time $ 22,833 $ 518,281 $ 52,894 $ 22,781 $ 616,789 Over Time 215,274 4,533 156,566 39,416 415,789 Total $ 238,107 $ 522,814 $ 209,460 $ 62,197 $ 1,032,578 2019 Renewables Residential Agtech Infrastructure Total Net sales: Point in Time $ 2,677 $ 458,006 $ 39,919 $ 26,490 $ 527,092 Over Time 227,078 3,624 103,349 37,090 371,141 Total $ 229,755 $ 461,630 $ 143,268 $ 63,580 $ 898,233
Net Sales by Region or Origin and Long-Lived Assets by Region of Domicile	Net sales by region or origin and long-lived assets by region of domicile for the years ended and as of December 31 are as follows (in thousands): 2021 2020 2019 Net sales North America $ 1,318,795 $ 1,018,406 $ 881,432 Asia 20,988 14,172 16,801 Total $ 1,339,783 $ 1,032,578 $ 898,233 Long-lived assets North America $ 97,003 $ 90,685 $ 79,590 Asia 365 476 542 Total $ 97,368 $ 91,161 $ 80,132

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Summary of Activity Recorded within the Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 3,529	$ 5,951	$ 6,170
Bad debt expense, net of recoveries	898	1,321	2,577
Accounts written off against allowance and other adjustments	(689)	(4,128)	(2,796)
Ending balance	3,738	3,529	5,951
Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 0	385	0
Ending balance		$ 0	$ 385

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2021segment	Dec. 31, 2021USD ($)segment	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Sale Leaseback Transaction [Line Items]
Number of reportable segments		4
Advertising costs | $		$ 8	$ 7.2	$ 5.7
Minimum | Land, Buildings and Improvements
Sale Leaseback Transaction [Line Items]
Estimated useful lives		15 years
Minimum | Machinery and Equipment
Sale Leaseback Transaction [Line Items]
Estimated useful lives		3 years
Maximum | Land, Buildings and Improvements
Sale Leaseback Transaction [Line Items]
Estimated useful lives		40 years
Maximum | Machinery and Equipment
Sale Leaseback Transaction [Line Items]
Estimated useful lives		20 years
Residential | Home Improvement Retail Company | Accounts Receivable | Customer Concentration Risk
Sale Leaseback Transaction [Line Items]
Concentrations of credit risk		14.00%	11.00%
Residential | Home Improvement Retail Company | Net sales | Customer Concentration Risk
Sale Leaseback Transaction [Line Items]
Concentrations of credit risk		13.00%	14.00%	14.00%
Renewables and Agtech
Sale Leaseback Transaction [Line Items]
Number of reportable segments	2	2

Summary of Significant Accoun_6

Summary of Significant Accounting Policies (Summary of Interest Capitalized and Depreciation Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Depreciation expense	$ 13,110	$ 11,252	$ 10,666

Revenue - Narrative (Details)

Revenue - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Asset recognized related to incremental costs of obtaining a contract	$ 0	$ 0
Costs in excess of billings	54,437,000	26,915,000	$ 20,607,000
Unearned revenue	3,681,000	21,325,000	15,389,000
Revenue recognized which was in contract liabilities	53,000,000	57,800,000	27,500,000
Billings in excess of cost
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Unearned revenue	$ 46,711,000	34,702,000	$ 47,598,000
Thermo Energy Systems Inc., Delta Separations, LLC, Architectural Mailboxes LLC , Sunfig Corporation, and TerraSmart LLC
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Costs in excess of billings		6,800,000
Unearned revenue		9,000,000
Thermo Energy Systems Inc., Delta Separations, LLC, Architectural Mailboxes LLC , Sunfig Corporation, and TerraSmart LLC | Billings in excess of cost
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Unearned revenue		$ 12,400,000
Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract payment terms	30 days
Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract payment terms	60 days
Remaining performance obligation expected timing of satisfaction	1 year

Revenue - Contract Assets and L

Revenue - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Costs in excess of billings	$ 54,437	$ 26,915	$ 20,607
Contract with customer liability	(3,681)	(21,325)	(15,389)
Billings in excess of cost
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer liability	$ (46,711)	$ (34,702)	$ (47,598)

Accounts Receivable (Details)

Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 185,745	$ 174,604
Costs in excess of billings	54,437	26,915
Total contract receivables	240,182	201,519
Less allowance for doubtful accounts	(3,738)	(3,529)	$ (5,951)	$ (6,170)
Accounts receivable	$ 236,444	$ 197,990

Inventories (Schedule of Invent

Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Inventory [Line Items]
Raw material	$ 135,558	$ 66,018
Work-in-process	5,858	5,382
Finished goods	39,256	31,205
Gross inventory	180,672	102,605
Less reserves	(4,465)	(4,298)
Total inventories	$ 176,207	$ 98,307

Inventories (Summary of Activit

Inventories (Summary of Activity within the Reserve for Excess, Obsolete, and Slow Moving Inventory) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Inventory [Roll Forward]
Beginning balance	$ 4,161	$ 3,463	$ 2,971
Excess, obsolete and slow moving inventory expense	215	355	1,134
Scrapped inventory and other adjustments	(24)	(343)	642
Ending balance	$ 4,400	$ 4,161	$ 3,463

Property, Plant, and Equipmen_2

Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Land and land improvements	$ 4,634	$ 4,605
Building and improvements	42,526	41,164
Machinery and equipment	194,015	188,853
Construction in progress	20,293	10,458
Property, plant, and equipment, gross	261,468	245,080
Less: accumulated depreciation	(164,583)	(155,518)
Property, plant, and equipment, net	$ 96,885	$ 89,562

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) $ in Thousands	Dec. 11, 2020USD ($)	Oct. 15, 2020USD ($)	Feb. 13, 2020USD ($)	Jan. 15, 2020USD ($)	Aug. 30, 2019USD ($)	Dec. 31, 2021USD ($)business	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Business Acquisition [Line Items]
Number of businesses acquired | business						5
Goodwill						$ 510,942	$ 514,279	$ 307,355
Renewables
Business Acquisition [Line Items]
Number of businesses acquired | business						2
Goodwill						$ 188,680	192,527	44,816
Agtech
Business Acquisition [Line Items]
Number of businesses acquired | business						2
Goodwill						$ 85,132	84,622	32,786
Residential
Business Acquisition [Line Items]
Number of businesses acquired | business						1
Goodwill						$ 205,452	$ 205,452	$ 198,075
Apeks
Business Acquisition [Line Items]
Acquisition purchase price					$ 12,600
Goodwill					$ 6,436
TerraSmart LLC
Business Acquisition [Line Items]
Acquisition purchase price						223,900
Goodwill						$ 140,997
Sunfig Corporation
Business Acquisition [Line Items]
Acquisition purchase price	$ 3,800
Goodwill	$ 3,500
Architectural Mailboxes LLC
Business Acquisition [Line Items]
Acquisition purchase price		$ 26,900
Goodwill		$ 7,400
Delta Separations, LLC
Business Acquisition [Line Items]
Acquisition purchase price			$ 47,100
Goodwill			$ 32,200
Thermo Energy Systems
Business Acquisition [Line Items]
Acquisition purchase price				$ 7,300
Goodwill				$ 19,100

Acquisitions (Schedule of Alloc

Acquisitions (Schedule of Allocation of the Purchase Price Consideration of the Fair Value of Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Jan. 15, 2020	Dec. 31, 2019	Aug. 30, 2019
Business Acquisition [Line Items]
Goodwill	$ 510,942	$ 514,279		$ 307,355
TerraSmart LLC
Business Acquisition [Line Items]
Cash	1,491
Working capital	5,569
Property, plant, and equipment	11,446
Acquired intangible assets	64,150
Other assets	1,854
Other liabilities	(1,640)
Goodwill	140,997
Fair value of purchase consideration	$ 223,867
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc.
Business Acquisition [Line Items]
Cash			$ 179
Working capital			(15,377)
Property, plant, and equipment			1,740
Acquired intangible assets			38,066
Other current assets			1,528
Other assets			2,381
Other liabilities			(5,576)
Goodwill			62,161
Fair value of purchase consideration			$ 85,102
Apeks
Business Acquisition [Line Items]
Cash					$ 4,154
Working capital					(1,515)
Property, plant, and equipment					1,059
Acquired intangible assets					3,000
Other assets					508
Other liabilities					(1,081)
Goodwill					6,436
Fair value of purchase consideration					$ 12,561

Acquisitions (Schedule of Acqui

Acquisitions (Schedule of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	Aug. 30, 2019	Dec. 31, 2021
TerraSmart LLC
Business Acquisition [Line Items]
Fair Value		$ 64,150
TerraSmart LLC | Trademarks
Business Acquisition [Line Items]
Fair Value		20,830
TerraSmart LLC | Technology
Business Acquisition [Line Items]
Fair Value		$ 1,940
Weighted-Average Amortization Period		12 years
TerraSmart LLC | Customer relationships
Business Acquisition [Line Items]
Fair Value		$ 35,110
Weighted-Average Amortization Period		12 years
TerraSmart LLC | Backlog
Business Acquisition [Line Items]
Fair Value		$ 6,270
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc.
Business Acquisition [Line Items]
Fair Value		38,066
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc. | Trademarks
Business Acquisition [Line Items]
Fair Value		8,100
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc. | Trademarks
Business Acquisition [Line Items]
Fair Value		$ 1,177
Weighted-Average Amortization Period		3 years
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc. | Technology
Business Acquisition [Line Items]
Fair Value		$ 8,345
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc. | Technology | Minimum
Business Acquisition [Line Items]
Weighted-Average Amortization Period		5 years
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc. | Technology | Maximum
Business Acquisition [Line Items]
Weighted-Average Amortization Period		15 years
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc. | Customer relationships
Business Acquisition [Line Items]
Fair Value		$ 18,480
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc. | Customer relationships | Minimum
Business Acquisition [Line Items]
Weighted-Average Amortization Period		11 years
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc. | Customer relationships | Maximum
Business Acquisition [Line Items]
Weighted-Average Amortization Period		13 years
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc. | Non-compete agreements
Business Acquisition [Line Items]
Fair Value		$ 1,036
Weighted-Average Amortization Period		5 years
Sunfig Corporation, Architectural Mailboxes, LLC, Delta Separations, LLC, and Thermo Energy Systems Inc. | Backlog
Business Acquisition [Line Items]
Fair Value		$ 928
Weighted-Average Amortization Period		1 year
Apeks
Business Acquisition [Line Items]
Fair Value	$ 3,000
Apeks | Trademarks
Business Acquisition [Line Items]
Fair Value	1,400
Apeks | Technology
Business Acquisition [Line Items]
Fair Value	$ 900
Weighted-Average Amortization Period	7 years
Apeks | Customer relationships
Business Acquisition [Line Items]
Fair Value	$ 700
Weighted-Average Amortization Period	6 years

Acquisitions (Acquisition Relat

Acquisitions (Acquisition Related Costs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Total acquisition related costs	$ 949	$ 3,864	$ 1,918
Cost of sales
Business Acquisition [Line Items]
Total acquisition related costs	0	634	401
Selling, general and administrative costs
Business Acquisition [Line Items]
Total acquisition related costs	$ 949	$ 3,230	$ 1,517

Goodwill and Related Intangib_3

Goodwill and Related Intangible Assets (Schedule of Changes in Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Balance at	$ 514,279	$ 307,355
Acquired goodwill		205,243
Adjustments to prior year acquisitions	(2,110)	578
Foreign currency translation	(1,227)	1,103
Balance at	510,942	514,279
Renewables
Goodwill [Roll Forward]
Balance at	192,527	44,816
Acquired goodwill		147,004
Adjustments to prior year acquisitions	(2,433)	0
Foreign currency translation	(1,414)	707
Balance at	188,680	192,527
Residential
Goodwill [Roll Forward]
Balance at	205,452	198,075
Acquired goodwill		7,377
Adjustments to prior year acquisitions	0	0
Foreign currency translation	0	0
Balance at	205,452	205,452
Agtech
Goodwill [Roll Forward]
Balance at	84,622	32,786
Acquired goodwill		50,862
Adjustments to prior year acquisitions	323	578
Foreign currency translation	187	396
Balance at	85,132	84,622
Infrastructure
Goodwill [Roll Forward]
Balance at	31,678	31,678
Acquired goodwill		0
Adjustments to prior year acquisitions	0	0
Foreign currency translation	0	0
Balance at	$ 31,678	$ 31,678

Goodwill and Related Intangib_4

Goodwill and Related Intangible Assets (Narrative) (Details)	Oct. 31, 2021reporting_unit	Dec. 31, 2021USD ($)reporting_unit	Dec. 31, 2020USD ($)reporting_unit	Dec. 31, 2019reporting_unit
Goodwill [Line Items]
Accumulated impairment losses		$ 133,200,000	$ 133,200,000
Goodwill impairment		$ 0	$ 0
Number of reporting units | reporting_unit	8
Carrying amount in excess of fair value, number of reporting units | reporting_unit		0	0	0
Trademarks
Goodwill [Line Items]
Impairment of indefinite-lived intangibles		$ 8,300,000	$ 0

Goodwill and Related Intangib_5

Goodwill and Related Intangible Assets (Schedule of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	$ 162,472	$ 155,183
Total acquired intangible assets, Gross Carrying Amount	215,172	211,753
Accumulated Amortization, Finite-lived intangible assets	73,668	55,388
Total acquired intangible assets, Accumulated Amortization	73,668	55,388
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	5,521	5,818
Accumulated Amortization, Finite-lived intangible assets	4,011	3,385
Unpatented technology and patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	38,474	38,752
Accumulated Amortization, Finite-lived intangible assets	20,656	17,765
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	108,591	98,500
Accumulated Amortization, Finite-lived intangible assets	39,832	31,580
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	2,686	4,885
Accumulated Amortization, Finite-lived intangible assets	1,969	1,747
Backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	7,200	7,228
Accumulated Amortization, Finite-lived intangible assets	7,200	911
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Indefinite-lived intangible assets	52,700	56,570
Accumulated Amortization, Indefinite-lived intangible assets	$ 0	$ 0

Goodwill and Related Intangib_6

Goodwill and Related Intangible Assets (Schedule of Impairment Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Trademarks
Finite-Lived Intangible Assets [Line Items]
Impairment of indefinite-lived intangibles	$ 8.3	$ 0

Goodwill and Related Intangib_7

Goodwill and Related Intangible Assets (Schedule of Amortization Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$ 18,856	$ 9,663	$ 6,891

Goodwill and Related Intangib_8

Goodwill and Related Intangible Assets (Schedule of Future Amortization Expense) (Details) $ in Thousands	Dec. 31, 2021USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2020	$ 12,124
2021	11,195
2022	11,014
2023	10,780
2024	$ 9,161

Accrued Expenses (Details)

Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accrued Liabilities, Current [Abstract]
Compensation	$ 15,293	$ 18,131
Current portion of cash-settled share-based liabilities	2,947	3,504
Interest and taxes	5,463	1,850
Customer rebates	15,253	11,575
Insurance	7,310	6,915
Current operating lease liability	7,239	8,034
Unearned revenue	3,681	21,325	$ 15,389
Other	10,807	12,171
Total accrued expenses	$ 67,993	$ 83,505
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued expenses	Accrued expenses

Debt (Schedule of Long-term Deb

Debt (Schedule of Long-term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Less unamortized debt issuance costs	$ (719)	$ 0
Total debt	23,781	85,636
Other Debt
Debt Instrument [Line Items]
Long term debt gross	0	636
Revolving Credit Facility | 2019 Senior Credit Agreement
Debt Instrument [Line Items]
Long term debt gross	$ 24,500	$ 85,000

Debt (Narrative) (Details)

Debt (Narrative) (Details)	Jan. 24, 2019USD ($)	Dec. 31, 2021USD ($)debtCovenant	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Carrying value of outstanding debt		$ 23,781,000	$ 85,636,000
Number of debt covenants | debtCovenant		3
Revolving Credit Facility | 2019 Senior Credit Agreement
Debt Instrument [Line Items]
Current borrowing capacity	$ 400,000,000
Maximum borrowing capacity under the revolving credit facility	$ 700,000,000
Revolving Credit Facility | 2019 Senior Credit Agreement | Minimum
Debt Instrument [Line Items]
Annual commitment fee	0.15%
Revolving Credit Facility | 2019 Senior Credit Agreement | Minimum | LIBOR
Debt Instrument [Line Items]
LIBOR floor, plus	1.125%
Revolving Credit Facility | 2019 Senior Credit Agreement | Maximum
Debt Instrument [Line Items]
Annual commitment fee	0.25%
Revolving Credit Facility | 2019 Senior Credit Agreement | Maximum | LIBOR
Debt Instrument [Line Items]
LIBOR floor, plus	2.00%
Term Loan | 2019 Senior Credit Agreement
Debt Instrument [Line Items]
Term loan (up to)	$ 300,000,000
Standby Letters of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity under the revolving credit facility		$ 6,200,000
Revolving Credit Facility | Senior Credit Agreement
Debt Instrument [Line Items]
Carrying value of outstanding debt		24,500,000	85,000,000
Availability amount		$ 369,300,000	$ 309,200,000

Debt (Schedule of Cash Paid for

Debt (Schedule of Cash Paid for Interest) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Long-term Debt, Unclassified [Abstract]
Interest expense, net	$ (1,639)	$ (703)	$ (2,323)
Interest income	269	276	764
Other non-cash adjustments	(345)	(345)	(380)
Cash paid for interest	$ 1,563	$ 634	$ 2,707

Pension and Other Postretirem_3

Pension and Other Postretirement Benefits (Schedule of Total Expense for All Retirement Plans) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)plan	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Defined Benefit Plan Disclosure [Line Items]
Total retirement plan expense	$ 3,685	$ 2,824	$ 2,572
401(k) plan
Defined Benefit Plan Disclosure [Line Items]
Total retirement plan expense	3,196	2,403	2,031
Multiemployer and other defined benefit and pension plans
Defined Benefit Plan Disclosure [Line Items]
Total retirement plan expense	$ 78	70	195
Number of plans | plan	1
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total retirement plan expense	$ 411	$ 351	$ 346

Pension and Other Postretirem_4

Pension and Other Postretirement Benefits (Changes in the Accumulated Postretirement Benefit Obligation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Plan amendments	$ 162	$ 0
Other Postretirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at	6,443	6,024
Service cost	0	10	$ 17
Interest cost	125	172	234
Actuarial losses (gains)	(200)	580
Benefits paid	(328)	(343)
Projected benefit obligation at	6,202	6,443	$ 6,024
Fair value of plan assets	0	0
Under funded status	(6,202)	(6,443)
Unamortized prior service cost	412	294
Unrecognized actuarial gain	1,530	1,843
Net amount recognized	$ (4,260)	$ (4,306)

Pension and Other Postretirem_5

Pension and Other Postretirement Benefits (Amounts Recognized in the Consolidated Financial Statements) (Details) - Other Postretirement Benefits - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accrued post retirement liability: Current portion	$ 358	$ 335
Accrued post retirement liability: Long term portion	5,844	6,108
Pre-tax accumulated other comprehensive loss – unamortized post-retirement healthcare costs	1,942	2,137
Net amount recognized	$ 4,260	$ 4,306

Pension and Other Postretirem_6

Pension and Other Postretirement Benefits (Components of Net Periodic Postretirement Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Ultimate healthcare trend rates	3.80%
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 0	$ 10	$ 17
Interest cost	125	172	234
Amortization of unrecognized prior service cost	44	44	44
Loss amortization (2)	113	64	51
Net periodic pension cost	$ 282	$ 290	$ 346
Discount rate	2.40%	2.00%	2.90%
Annual rate of increase in the per capita cost of: Medical costs before age 65	7.00%	7.00%	6.80%
Annual rate of increase in the per capita cost of: Medical costs after age 65	4.50%	4.50%	4.50%
Annual rate of increase in the per capita cost of: Prescription drug costs	7.00%	7.00%	7.00%

Pension and Other Postretirem_7

Pension and Other Postretirement Benefits (Expected Benefit Payments from the Plan) (Details) - Unamortized Post-Retirement Health Care Costs $ in Thousands	Dec. 31, 2021USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2022	$ 358
2023	369
2024	377
2025	389
2026	401
Years 2027 - 2031	$ 1,961

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (3,298)	$ (6,112)
Balance at end of period	(607)	(3,298)	$ (6,112)
Tax (Benefit) Expense
Balance at beginning of period	(837)	(721)
Tax (Benefit) Expense	43	(116)
Balance at end of period	(794)	(837)	(721)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(2,461)	(5,391)
Minimum post retirement benefit plan adjustments	136	(371)
Foreign currency translation adjustment	(2,648)	(2,930)	(1,843)
Balance at end of period	187	(2,461)	(5,391)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(872)	(4,173)
Other Comprehensive Income (Loss), before Tax	2,512	3,301
Balance at end of period	1,640	(872)	(4,173)
Tax (Benefit) Expense
Tax (Benefit) Expense	0	0
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Foreign currency translation adjustment	2,512	3,301
Minimum post retirement benefit plan adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(2,426)	(1,939)
Other Comprehensive Income (Loss), before Tax	(179)	487
Balance at end of period	$ (2,247)	$ (2,426)	$ (1,939)

Equity-Based Compensation (Narr

Equity-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	May 04, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	0	0	0
Market price of common stock, per share	$ 66.68
Unrecognized compensation cost	$ 10.3
Weighted average cost recognition period, in years	2 years 1 month 6 days
Accrued equity based compensation	$ 22.6	$ 18.2
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Typical vesting period, in years	4 years
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded (in shares)	62,778
Forfeited in period (in shares)	7,167
Performance stock units outstanding (in shares)	363,474	407,289
Performance Shares, Market Condition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded (in shares)	0		0
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded (in shares)	72,243
Forfeited in period (in shares)	22,073
Performance stock units outstanding (in shares)	204,584	237,442
Stock price average period	200 days
2018 Plan | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized				1,000,000
2015 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance under the Plan	393,000
2015 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance under the Plan	120,000
Non-Employee Directors Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance under the Plan	19,000
Accrued Expenses, Current
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accrued equity based compensation	$ 2.9
Non Current Liabilities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accrued equity based compensation	$ 19.7	$ 14.7

Equity-Based Compensation (Summ

Equity-Based Compensation (Summary of Compensation Expense Connection with Awards) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense recognized under the Prior Plan	$ 29	$ 40	$ 192
Expense recognized under the Non-Employee Directors Plan	840	760	570
Total stock compensation expense	8,652	8,173	12,570
Tax benefits recognized related to stock compensation expense	2,189	2,272	3,136
2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense recognized under the Plan	1,186	1,932	5,077
2018 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense recognized under the Plan	$ 6,597	$ 5,441	$ 6,731

Equity-Based Compensation (Sche

Equity-Based Compensation (Schedule of Number of Awards and Weighted Average Grant Date Fair Value) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	7,536
Weighted Average Grant Date Fair Value (in USD per share)	$ 83.58
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	2,512
Weighted Average Grant Date Fair Value (in USD per share)	$ 83.58
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	72,243
Weighted Average Grant Date Fair Value (in USD per share)	$ 79.28
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	62,778
Weighted Average Grant Date Fair Value (in USD per share)	$ 87.84
2019 | Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	7,536
Weighted Average Grant Date Fair Value (in USD per share)	$ 83.58
2019 | Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	2,512
Weighted Average Grant Date Fair Value (in USD per share)	$ 83.58
2019 | Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	72,243
Weighted Average Grant Date Fair Value (in USD per share)	$ 79.28
2019 | Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)	62,778
Weighted Average Grant Date Fair Value (in USD per share)	$ 87.84
2018 | Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)		12,402
Weighted Average Grant Date Fair Value (in USD per share)		$ 45.98
2018 | Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)		4,134
Weighted Average Grant Date Fair Value (in USD per share)		$ 45.98
2018 | Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)		81,397
Weighted Average Grant Date Fair Value (in USD per share)		$ 56.81
2018 | Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)		160,426
Weighted Average Grant Date Fair Value (in USD per share)		$ 55.98
2017 | Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)			7,509
Weighted Average Grant Date Fair Value (in USD per share)			$ 37.95
2017 | Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)			7,509
Weighted Average Grant Date Fair Value (in USD per share)			$ 37.95
2017 | Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)			152,472
Weighted Average Grant Date Fair Value (in USD per share)			$ 39.73
2017 | Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards (in shares)			183,908
Weighted Average Grant Date Fair Value (in USD per share)			$ 40.49

Equity-Based Compensation (Su_2

Equity-Based Compensation (Summary of Ranges of Outstanding and Exercisable Options) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2018
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding	5,000	117,409	41,500	159,759
Weighted Average Remaining Contractual Life (in years)	5 years 3 months 29 days
Weighted Average Exercise Price	$ 27.99	$ 11.57
$39.00– $44.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	39
Exercise Price Range, Upper Range Limit	$ 44
Options Outstanding	5,000
Weighted Average Remaining Contractual Life (in years)	5 years 3 months 29 days
Weighted Average Exercise Price	$ 39.55
Options Exercisable	5,000
Weighted Average Exercise Price	$ 39.55

Equity-Based Compensation (Su_3

Equity-Based Compensation (Summary of Stock Option Transactions) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Options (in shares):
Beginning balance (in shares)	41,500	117,409	159,759
Exercised (in shares)	(36,500)		(42,350)
Forfeited (in shares)		(75,909)
Ending balance (in shares)	5,000	41,500	117,409
Weighted Average Exercise Price (in dollars per share)
Begininng balance (in dollars per share)	$ 29.38	$ 19.91	$ 17.70
Exercised (in dollars per share)	27.99		11.57
Forfeited (in dollars per share)		14.73
Ending balance (in dollars per share)	$ 39.55	$ 29.38	$ 19.91
Weighted Average Remaining Contractual Life (in years)	5 years 3 months 29 days
Aggregate Intrinsic Value	$ 135,650

Equity-Based Compensation (Su_4

Equity-Based Compensation (Summary of Information about Restricted Stock Units and Weighted Average Grant Date Fair Value) (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2021
Restricted stock units
Restricted Stock Units / Restricted Stock (in shares)
Balance at beginning of period (in shares)		237,442
Granted (in shares)		72,243
Adjustments (in shares)		0
Vested (in shares)		(83,028)
Forfeited (in shares)		(22,073)
Balance at end of period (in shares)		204,584
Weighted Average Grant Date Fair Value (in dollars per share)
Balance at beginning of period (in USD per share)		$ 41.15
Granted (in USD per share)		79.28
Adjustments (in USD per share)		0
Vested (in USD per share)		43.09
Forfeited (in USD per share)		49.78
Balance at end of period (in USD per share)		$ 52.90
Common stock
Restricted Stock Units / Restricted Stock (in shares)
Balance at beginning of period (in shares)		0
Granted (in shares)		2,512
Adjustments (in shares)		0
Vested (in shares)		(2,512)
Forfeited (in shares)		0
Balance at end of period (in shares)		0
Weighted Average Grant Date Fair Value (in dollars per share)
Balance at beginning of period (in USD per share)		$ 0
Granted (in USD per share)		83.58
Adjustments (in USD per share)		0
Vested (in USD per share)		83.58
Forfeited (in USD per share)		0
Balance at end of period (in USD per share)		$ 0
Performance stock units
Restricted Stock Units / Restricted Stock (in shares)
Balance at beginning of period (in shares)		407,289
Granted (in shares)		62,778
Adjustments (in shares)		7,400
Vested (in shares)		(106,826)
Forfeited (in shares)		(7,167)
Balance at end of period (in shares)		363,474
Weighted Average Grant Date Fair Value (in dollars per share)
Balance at beginning of period (in USD per share)		$ 45
Granted (in USD per share)		87.84
Adjustments (in USD per share)		52.40
Vested (in USD per share)		35.06
Forfeited (in USD per share)		46.87
Balance at end of period (in USD per share)		$ 55.44
Deferred Stock Units
Restricted Stock Units / Restricted Stock (in shares)
Balance at beginning of period (in shares)		47,154
Granted (in shares)		7,536
Adjustments (in shares)		0
Vested (in shares)		(2,218)
Forfeited (in shares)		0
Balance at end of period (in shares)		52,472
Weighted Average Grant Date Fair Value (in dollars per share)
Balance at beginning of period (in USD per share)		$ 37.30
Granted (in USD per share)		83.58
Adjustments (in USD per share)		0
Vested (in USD per share)		36.47
Forfeited (in USD per share)		0
Balance at end of period (in USD per share)		$ 43.99
Minimum | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Percent of grants awarded based on target threshold		0.00%
Maximum | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Percent of grants awarded based on target threshold		200.00%
2015 Equity Incentive Plan | Return On Invested Capital | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Award performance period		1 year
2015 Equity Incentive Plan | Gross Profit Threshold | Minimum | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Award performance period		2 years
2015 Equity Incentive Plan | Gross Profit Threshold | Maximum | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Award performance period		3 years
2015 Equity Incentive Plan | Total Shareholder Return | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Award performance period		3 years
2018 Plan | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Shares to be issued on conversion as percentage of total award		109.50%
2018 Plan | Performance stock units | Forecast
Weighted Average Grant Date Fair Value (in dollars per share)
Shares to be issued on conversion (in shares)	7,400

Equity-Based Compensation (Aggr

Equity-Based Compensation (Aggregate Intrinsic Value of Options Exercised and Aggregate Fair Value of Restricted Stock Units and Restricted Shares that Vested) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options exercised	$ 2,103	$ 3,812	$ 1,371
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value	6,320	11,851	10,017
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value	370	190	285
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value	$ 630	$ 570	$ 285

Equity-Based Compensation (Cash

Equity-Based Compensation (Cash Paid to Settle Liability Awards) (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
MSPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units credited	$ 4,915	$ 15,401	$ 6,543
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units credited (in shares)	30,475	57,046	61,369
Restricted stock units balance, vested and unvested (in shares)	223,892	231,343	415,760
Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
MSPP expense, in thousands	$ 6,034	$ 4,518	$ 2,699

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Extinguishment of Debt [Line Items]
Carrying value of outstanding debt	$ 23,781,000	$ 85,636,000
Revolving Credit Facility | Senior Credit Agreement
Extinguishment of Debt [Line Items]
Carrying value of outstanding debt	$ 24,500,000	$ 85,000,000

Discontinued Operations (Narrat

Discontinued Operations (Narrative) (Details) - USD ($) $ in Thousands	Feb. 23, 2021	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on disposal			$ 0	$ 1,881	$ 0
Apartment Tour Application Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on disposal		$ 1,900
Cash proceeds from sale of business		$ 2,000
Discontinued Operations, Disposed of by Sale | Industrial Business Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds of sale of business	$ 38,000
Seller note principal amount	13,000
Estimated pre-tax loss	30,000
Gain (loss) on disposal	$ (29,600)

Discontinued Operations (Detail

Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Assets of discontinued operations	$ 0	$ 77,438
Liabilities
Total current liabilities	0	49,295
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Loss and adjustments to loss on disposal	0	(1,881)	$ 0
Income (loss) from discontinued operations before taxes	1,479	(16,602)	6,682
Industrial Business Segment
Assets
Total assets classified as held for sale		77,438
Liabilities
Total liabilities classified as held for sale		49,295
Discontinued Operations, Held-for-sale | Industrial Business Segment
Assets
Accounts receivable, net		11,261
Inventories, net		13,041
Prepaid expenses and other current assets		21,310
Assets of discontinued operations		45,612
Property, plant, and equipment, net		16,999
Operating lease assets		6,470
Goodwill		22,475
Acquired intangibles		15,482
Loss recognized on classification as held for sale		(29,600)
Total noncurrent assets		31,826
Liabilities
Accounts payable		10,708
Accrued expenses		9,274
Total current liabilities		19,982
Deferred income taxes		24,657
Non-current operating lease liabilities		4,639
Other non-current liabilities		17
Total noncurrent liabilities		29,313
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net sales	20,391	128,915	150,225
Operating expenses	17,493	115,822	143,335
Loss and adjustments to loss on disposal	1,419	29,600	0
Interest expense allocation	0	95	208
Income (loss) from discontinued operations before taxes	$ 1,479	$ (16,602)	$ 6,682

Exit Activity Costs and Asset_3

Exit Activity Costs and Asset Impairments (Narrative) (Details) $ in Thousands	Jun. 30, 2020USD ($)	Dec. 31, 2021USD ($)facility	Dec. 31, 2020USD ($)facility	Dec. 31, 2019USD ($)facility
Restructuring Cost and Reserve [Line Items]
Number of consolidated facilities to be closed | facility		4	2	1
Gain on sale of business		$ 0	$ 1,881	$ 0
Apartment Tour Application Business
Restructuring Cost and Reserve [Line Items]
Cash proceeds from sale of business	$ 2,000
Gain on sale of business	$ 1,900

Exit Activity Costs and Asset_4

Exit Activity Costs and Asset Impairments (Schedule Of Asset Impairment Charges Related To Restructuring Activities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Exit activity costs	$ 7,020	$ 2,207	$ 5,166
Asset impairment charges	1,193	81	408
Restructuring charges	8,213	2,288	5,574
Corporate
Restructuring Cost and Reserve [Line Items]
Exit activity costs	145	375	1,660
Asset impairment charges	0	0	0
Restructuring charges	145	375	1,660
Renewables | Operating Segments
Restructuring Cost and Reserve [Line Items]
Exit activity costs	4,769	15	66
Asset impairment charges	1,193	0	0
Restructuring charges	5,962	15	66
Residential | Operating Segments
Restructuring Cost and Reserve [Line Items]
Exit activity costs	393	731	3,440
Asset impairment charges	0	9	417
Restructuring charges	393	740	3,857
Infrastructure | Operating Segments
Restructuring Cost and Reserve [Line Items]
Exit activity costs	26	226	0
Asset impairment charges	0	0	0
Restructuring charges	26	226	0
Agtech | Operating Segments
Restructuring Cost and Reserve [Line Items]
Exit activity costs	1,687	860	0
Asset impairment charges	0	72	(9)
Restructuring charges	$ 1,687	$ 932	$ (9)

Exit Activity Costs and Asset_5

Exit Activity Costs and Asset Impairments (Summary Of Exit Activity Costs And Asset Impairments Recorded in the Consolidated Statements of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 8,213	$ 2,288	$ 5,574
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6,176	1,059	767
Selling, general, and administrative expense
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,037	$ 1,229	$ 4,807

Exit Activity Costs and Asset_6

Exit Activity Costs and Asset Impairments (Reconciles Of Liability For Exit Activity Costs Relating To Facility Consolidation Efforts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Balance as of	$ 1,030	$ 2,083
Exit activity costs recognized	7,020	2,207	$ 5,166
Cash payments	(7,778)	(3,260)
Balance as of	$ 272	$ 1,030	$ 2,083

Income Taxes (Components of Inc

Income Taxes (Components of Income (Loss) before Taxes from Continuing Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ 93,155	$ 108,930	$ 78,351
Foreign	6,407	(1,171)	(270)
Income before taxes	$ 99,562	$ 107,759	$ 78,081

Income Taxes (Benefit of) Provi

Income Taxes (Benefit of) Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Provision for income taxes	$ 366	$ 2,123	$ 1,519
Deferred:
Total deferred	2,968	3,786	4,120
Provision for income taxes	25,046	24,468	18,153
Continuing Operations
Current:
U.S. Federal	16,137	16,505	10,394
State	5,009	4,071	3,547
Foreign	932	106	92
Total current	22,078	20,682	14,033
Deferred:
U.S. Federal	1,766	3,620	3,740
State	134	672	486
Foreign	1,068	(506)	(106)
Total deferred	2,968	3,786	4,120
Provision for income taxes	25,046	24,468	18,153
Discontinued Operations
Current:
U.S. Federal	362	1,345	885
State	139	57	4
Foreign	214	1,725	1,447
Total current	715	3,127	2,336
Provision for income taxes	366	2,123	1,519
Deferred:
U.S. Federal	(340)	(876)	(823)
State	2	10	23
Foreign	(11)	(138)	(17)
Total deferred	$ (349)	$ (1,004)	$ (817)

Income Taxes (Provision for Inc

Income Taxes (Provision for Income Taxes from Continuing Operations Differs from the Federal Statutory Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Statutory rate	$ 20,908	$ 22,629	$ 16,397
State taxes, less federal effect	4,068	3,650	3,194
Federal tax credits	(587)	(1,064)	(1,621)
Excess tax benefit on stock based compensation	(2,039)	(1,674)	(871)
Uncertain tax positions	0	0	(260)
Executive compensation	1,781	1,114	1,132
Change in valuation allowance	0	(130)	88
Other	915	(57)	94
Provision for income taxes	$ 25,046	$ 24,468	$ 18,153
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory rate	21.00%	21.00%	21.00%
State taxes, less federal effect	4.10%	3.40%	4.10%
Federal tax credits	(0.60%)	(1.00%)	(2.10%)
Excess tax benefit on stock based compensation	(2.00%)	(1.60%)	(1.10%)
Uncertain tax positions	0.00%	0.00%	(0.30%)
Executive compensation	1.80%	1.00%	1.40%
Change in valuation allowance	0.00%	(0.10%)	0.10%
Other	0.90%	0.00%	0.10%
Effective income tax rate, percentage	25.20%	22.70%	23.20%

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Statutory tax rate, percentage	21.00%	21.00%	21.00%
Deferred tax assets, net of operating losses	$ 15,100,000
Deferred tax assets, net of operating losses	700,000
Undistributed earnings of foreign subsidiaries	4,200,000
Lapses of applicable statute of limitations	0	$ 0	$ 329,000
Capital loss carryforward	113,800,000
Deferred tax assets, capital loss carryforwards	27,300,000
Interest and penalties recognized	$ 0	$ 0	$ 0
Minimum
Operating Loss Carryforwards [Line Items]
Statute of limitations expiration period, in years	4 years
Maximum
Operating Loss Carryforwards [Line Items]
Statute of limitations expiration period, in years	10 years
Federal
Operating Loss Carryforwards [Line Items]
Deferred tax assets, net of operating losses	$ 400,000
Deferred tax assets, net of operating losses	100,000
Deferred tax assets, capital loss carryforwards	23,000,000
State
Operating Loss Carryforwards [Line Items]
Deferred tax assets, net of operating losses	14,300,000
Deferred tax assets, net of operating losses	500,000
Deferred tax assets, capital loss carryforwards	4,300,000
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Deferred tax assets, net of operating losses	400,000
Deferred tax assets, net of operating losses	$ 100,000

Income Taxes (Deferred Tax Liab

Income Taxes (Deferred Tax Liabilities (Assets)) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Depreciation	$ 9,633	$ 7,697
Goodwill	48,265	41,842
Intangible assets	1,657	5,632
Other	5,298	6,878
Gross deferred tax liabilities	64,853	62,049
Capital loss carryforward	(27,328)	0
Equity compensation	(8,236)	(7,496)
Other	(15,641)	(15,682)
Gross deferred tax assets	(51,205)	(23,178)
Valuation allowances	26,581	111
Deferred tax assets, net of valuation allowances	(24,624)	(23,067)
Net deferred tax liabilities	$ 40,229	$ 38,982

Income Taxes (Summary of Valuat

Income Taxes (Summary of Valuation Allowance) (Details) - Deferred Tax Valuation Allowance - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of January 1	$ 111	$ 298	$ 206
Cost charged to the tax provision	13	70	100
Currency translation	(41)	(248)	(10)
Currency translation	0	(9)	2
Reclassification from discontinued operations upon sale of industrial group	26,498	0	0
Balance as of December 31	$ 26,581	$ 111	$ 298

Income Taxes (Income Taxes Paid

Income Taxes (Income Taxes Paid, Net of Tax Refunds) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Payments made for income taxes, net	$ 22,076	$ 21,351	$ 16,744

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance as of January 1	$ 0	$ 0	$ 329
Additions for tax positions of the current year	0	0	0
Additions for tax positions of prior years	0	0	0
Settlements and changes in judgment	0	0	0
Lapses of applicable statute of limitations	0	0	(329)
Divestitures and foreign currency translation	0	0	0
Balance as of December 31	$ 0	$ 0	$ 0

Earnings per Share (Narrative)

Earnings per Share (Narrative) (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive number of shares	0	13,000	30,000

Earnings per Share (Schedule of

Earnings per Share (Schedule of Computation of Basic and Diluted Earnings per Share) (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Income from continuing operations	$ 74,516	$ 83,291	$ 59,928
Income (loss) from discontinued operations	1,113	(18,725)	5,163
Net income	$ 75,629	$ 64,566	$ 65,091
Weighted average shares outstanding (in shares)	32,873	32,664	32,389
Common stock options and restricted stock (in shares)	181	254	333
Weighted average shares and conversions (in shares)	33,054	32,918	32,722

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Cumulative effect of new accounting principle in period of adoption	$ 825,258	$ 743,805	$ 673,964	$ 596,693
Cumulative Effect, Period of Adoption, Adjustment
Lessee, Lease, Description [Line Items]
Cumulative effect of new accounting principle in period of adoption			(291)	1,582
Minimum
Lessee, Lease, Description [Line Items]
Lease renewal term	1 month
Maximum
Lessee, Lease, Description [Line Items]
Lease renewal term	15 years
Retained Earnings
Lessee, Lease, Description [Line Items]
Cumulative effect of new accounting principle in period of adoption	$ 545,572	$ 469,943	405,668	338,995
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment
Lessee, Lease, Description [Line Items]
Cumulative effect of new accounting principle in period of adoption			$ (291)	$ 1,582

Leases - Assets and Liabilities

Leases - Assets and Liabilities of Lessee (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease assets	$ 18,120	$ 25,229
Current operating lease liability	7,239	8,034
Non-current operating lease liabilities	11,390	17,730
Total operating lease liability	$ 18,629	$ 25,764

Leases - Schedule of Lease Cost

Leases - Schedule of Lease Cost and Assumptions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 10,977	$ 10,005	$ 10,006
Short-term lease cost	7,153	996	435
Total lease cost	18,130	11,001	10,441
Cash paid for amounts included in the measurement of operating liabilities	9,431	9,502	9,238
Right-of-use assets obtained in exchange for new lease liabilities	$ 1,084	$ 12,745	$ 6,364
Weighted-average remaining lease term - operating leases	3 years	3 years 7 months 6 days
Weighted-average discount rate - operating leases	520.00%	520.00%

Leases - Maturity of Lease Paym

Leases - Maturity of Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
2022	$ 7,931
2023	6,703
2024	3,443
2025	1,155
2026	300
After 2026	492
Total lease payments	20,024
Less: present value discount	(1,395)
Present value of lease liabilities	$ 18,629	$ 25,764

Segment Information (Narrative)

Segment Information (Narrative) (Details)	12 Months Ended
	Dec. 31, 2021segment
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Number of reportable segments	4

Segment Information (Measuremen

Segment Information (Measurements Used by Management to Assess Performance of Segments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	$ 1,339,783	$ 1,032,578	$ 898,233
Income from operations:	96,988	107,190	80,812
Depreciation and amortization	31,966	20,915	17,557
Total assets	1,214,901	1,212,494	984,450
Capital expenditures	17,705	13,068	8,776
Discontinued Operations
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	0	77,438	92,854
Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Income from operations:	133,959	142,401	117,033
Unallocated Corporate Expenses
Segment Reporting, Other Significant Reconciling Item [Line Items]
Income from operations:	(36,971)	(35,211)	(36,221)
Depreciation and amortization	219	300	390
Total assets	21,246	28,057	174,475
Capital expenditures	3,869	7,101	581
Renewables
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	432,096	238,107	229,755
Renewables | Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	432,096	238,107	229,755
Income from operations:	20,158	30,105	24,788
Depreciation and amortization	14,682	3,377	3,480
Total assets	445,486	402,797	127,856
Capital expenditures	4,268	423	252
Residential
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	635,505	522,814	461,630
Residential | Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	635,505	522,814	461,630
Income from operations:	105,821	94,430	63,047
Depreciation and amortization	8,694	8,110	7,906
Total assets	453,469	407,132	359,657
Capital expenditures	4,182	3,313	4,968
Agtech
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	199,161	209,460	143,268
Agtech | Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	199,161	209,460	143,268
Income from operations:	(931)	10,633	22,770
Depreciation and amortization	5,279	6,068	2,652
Total assets	212,038	216,274	118,997
Capital expenditures	3,289	720	1,947
Infrastructure
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	73,021	62,197	63,580
Infrastructure | Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	73,021	62,197	63,580
Income from operations:	8,911	7,233	6,428
Depreciation and amortization	3,092	3,060	3,129
Total assets	82,662	80,796	110,611
Capital expenditures	$ 2,097	$ 1,511	$ 1,028

Segment Information (Net Sales

Segment Information (Net Sales by Contract Type) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales:	$ 1,339,783	$ 1,032,578	$ 898,233
Renewables
Disaggregation of Revenue [Line Items]
Net sales:	432,096	238,107	229,755
Residential
Disaggregation of Revenue [Line Items]
Net sales:	635,505	522,814	461,630
Agtech
Disaggregation of Revenue [Line Items]
Net sales:	199,161	209,460	143,268
Infrastructure
Disaggregation of Revenue [Line Items]
Net sales:	73,021	62,197	63,580
Point in Time
Disaggregation of Revenue [Line Items]
Net sales:	711,793	616,789	527,092
Point in Time | Renewables
Disaggregation of Revenue [Line Items]
Net sales:	28,630	22,833	2,677
Point in Time | Residential
Disaggregation of Revenue [Line Items]
Net sales:	630,494	518,281	458,006
Point in Time | Agtech
Disaggregation of Revenue [Line Items]
Net sales:	20,157	52,894	39,919
Point in Time | Infrastructure
Disaggregation of Revenue [Line Items]
Net sales:	32,512	22,781	26,490
Over Time
Disaggregation of Revenue [Line Items]
Net sales:	627,990	415,789	371,141
Over Time | Renewables
Disaggregation of Revenue [Line Items]
Net sales:	403,466	215,274	227,078
Over Time | Residential
Disaggregation of Revenue [Line Items]
Net sales:	5,011	4,533	3,624
Over Time | Agtech
Disaggregation of Revenue [Line Items]
Net sales:	179,004	156,566	103,349
Over Time | Infrastructure
Disaggregation of Revenue [Line Items]
Net sales:	$ 40,509	$ 39,416	$ 37,090

Segment Information (Net Sale_2

Segment Information (Net Sales by Region or Origin and Long-Lived Assets by Region of Domicile) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales:	$ 1,339,783	$ 1,032,578	$ 898,233
Long-lived assets	97,368	91,161	80,132
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales:	1,318,795	1,018,406	881,432
Long-lived assets	97,003	90,685	79,590
Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales:	20,988	14,172	16,801
Long-lived assets	$ 365	$ 476	$ 542