Insight Enterprises (NSIT) 10-K 17 Feb 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Feb. 12, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Trading Symbol	NSIT
Entity Registrant Name	INSIGHT ENTERPRISES, INC.
Entity Central Index Key	0000932696
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	true
Entity Interactive Data Current	Yes
Entity File Number	0-25092
Entity Tax Identification Number	86-0766246
Entity Address, Address Line One	6820 South Harl Avenue
Entity Address, City or Town	Tempe
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85283
City Area Code	480
Local Phone Number	333-3000
Document Annual Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	DE
Title of 12(b) Security	Common stock, par value $0.01
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		35,103,074
Entity Public Float			$ 1,692,113,608
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant’s Proxy Statement relating to its 2021 Annual Meeting of Stockholders have been incorporated by reference into Part III, Items 10, 11, 12, 13 and 14 of this Annual Report on Form 10-K.

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 128,313	$ 114,668
Accounts receivable, net	2,685,448	2,511,383
Inventories	185,650	190,833
Other current assets	177,039	231,148
Total current assets	3,176,450	3,048,032
Property and equipment, net	146,016	130,907
Goodwill	429,368	415,149
Intangible assets, net	246,915	278,584
Other assets	311,983	305,507
Total assets	4,310,732	4,178,179
Current liabilities:
Accounts payable—trade	1,461,312	1,275,957
Accounts payable—inventory financing facilities	356,930	253,676
Accrued expenses and other current liabilities	408,117	352,204
Current portion of long-term debt	1,105	1,691
Total current liabilities	2,227,464	1,883,528
Long-term debt	437,581	857,673
Deferred income taxes	33,209	44,633
Other liabilities	270,049	232,027
Total liabilities	2,968,303	3,017,861
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.01 par value, 3,000 shares authorized; no shares issued
Common stock, $0.01 par value, 100,000 shares authorized; 35,103 and 35,263 shares issued and outstanding, respectively	351	353
Additional paid-in capital	364,288	357,032
Retained earnings	993,245	841,097
Accumulated other comprehensive loss – foreign currency translation adjustments	(15,455)	(38,164)
Total stockholders’ equity	1,342,429	1,160,318
Total liabilities and stockholders' equity	$ 4,310,732	$ 4,178,179

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	35,103,000	35,263,000
Common stock, shares outstanding	35,103,000	35,263,000

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net sales:
Total net sales	$ 2,291,315	$ 1,936,478	$ 1,968,735	$ 2,144,051	$ 2,297,156	$ 1,912,547	$ 1,836,021	$ 1,685,466	$ 8,340,579	$ 7,731,190	$ 7,080,136
Costs of goods sold:
Total costs of goods sold	1,948,661	1,628,915	1,644,346	1,818,715	1,959,174	1,636,352	1,560,572	1,436,994	7,040,637	6,593,092	6,086,418
Gross profit	342,654	307,563	324,389	325,336	337,982	276,195	275,449	248,472	1,299,942	1,138,098	993,718
Operating expenses:
Selling and administrative expenses	257,167	245,155	242,580	268,863	266,970	223,215	199,489	191,063	1,013,765	880,737	756,529
Severance and restructuring expenses	2,432	808	7,010	2,144	1,713	2,662	680	370	12,394	5,425	3,424
Acquisition-related expenses	13	118	611	1,466	2,283	5,896	3,163		2,208	11,342	282
Earnings from operations	83,042	61,482	74,188	52,863	67,016	44,422	72,117	57,039	271,575	240,594	233,483
Non-operating (income) expense:
Interest expense, net	10,434	9,115	10,219	11,826	11,897	7,694	4,335	4,552	41,594	28,478	21,737
Other expense (income), net	693	1,301	1,098	(1,563)	(458)	(538)	346	1,050	1,529	400	(156)
Earnings before income taxes	71,915	51,066	62,871	42,600	55,577	37,266	67,436	51,437	228,452	211,716	211,902
Income tax expense	18,527	12,160	16,486	8,639	12,627	10,134	17,438	12,110	55,812	52,309	48,225
Net earnings	$ 53,388	$ 38,906	$ 46,385	$ 33,961	$ 42,950	$ 27,132	$ 49,998	$ 39,327	$ 172,640	$ 159,407	$ 163,677
Net earnings per share:
Basic	$ 1.52	$ 1.11	$ 1.32	$ 0.96	$ 1.22	$ 0.76	$ 1.40	$ 1.10	$ 4.92	$ 4.49	$ 4.60
Diluted	$ 1.50	$ 1.10	$ 1.32	$ 0.95	$ 1.20	$ 0.76	$ 1.38	$ 1.09	$ 4.87	$ 4.43	$ 4.55
Shares used in per share calculations:
Basic	35,098	35,077	35,060	35,233	35,259	35,512	35,772	35,609	35,117	35,538	35,586
Diluted	35,523	35,348	35,260	35,646	35,755	35,868	36,111	36,103	35,444	35,959	36,009
Products [Member]
Net sales:
Total net sales									$ 7,172,155	$ 6,732,121	$ 6,249,938
Costs of goods sold:
Total costs of goods sold									6,497,001	6,125,360	5,711,400
Services [Member]
Net sales:
Total net sales									1,168,424	999,069	830,198
Costs of goods sold:
Total costs of goods sold									$ 543,636	$ 467,732	$ 375,018

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 172,640	$ 159,407	$ 163,677
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	22,710	3,489	(17,389)
Total comprehensive income	$ 195,350	$ 162,896	$ 146,288

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]Revision of Prior Period, Adjustment [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Retained Earnings [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]Revision of Prior Period, Adjustment [Member]
Beginning Balance at Dec. 31, 2017	$ 843,469	$ 7,176	$ 358		$ 317,155	$ (24,264)	$ 550,220	$ 7,176
Beginning Balance, Shares at Dec. 31, 2017			35,829
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Value	(3,230)		$ 3		(3,233)
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Shares			(294)
Stock-based compensation expense	15,355				15,355
Repurchase of treasury stock, Amount	(22,069)			$ (22,069)
Repurchase of treasury stock, Shares				(641)
Retirement of treasury stock, Amount			$ (6)	$ 22,069	(5,655)		(16,408)
Retirement of treasury stock, Shares			641	(641)
Foreign currency translation adjustments, net of tax	(17,389)					(17,389)
Net earnings	163,677						163,677
Ending Balance at Dec. 31, 2018	986,989		$ 355		323,622	(41,653)	704,665
Ending Balance, Shares at Dec. 31, 2018			35,482
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Value	(6,572)		$ 3		(6,575)
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Shares			(322)
Stock-based compensation expense	16,011				16,011
Equity component of convertible senior notes,net of deferred tax of $14,819 and issuance costs of $1,700	44,731				44,731
Issuance of warrants related to convertible senior notes	34,440				34,440
Purchase of note hedge related to convertible senior notes, net of deferred tax of $16,047	(50,278)				(50,278)
Repurchase of treasury stock, Amount	(27,899)			$ (27,899)
Repurchase of treasury stock, Shares				(541)
Retirement of treasury stock, Amount			$ (5)	$ 27,899	(4,919)		(22,975)
Retirement of treasury stock, Shares			541	(541)
Foreign currency translation adjustments, net of tax	3,489					3,489
Net earnings	159,407						159,407
Ending Balance at Dec. 31, 2019	1,160,318		$ 353		357,032	(38,164)	841,097
Ending Balance, Shares at Dec. 31, 2019			35,263
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Value	(5,964)		$ 3		(5,967)
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Shares			(285)
Stock-based compensation expense	17,727				17,727
Repurchase of treasury stock, Amount	(25,000)			$ (25,000)
Repurchase of treasury stock, Shares				(445)
Retirement of treasury stock, Amount	(2)		$ (5)	$ 25,000	(4,504)	(1)	(20,492)
Retirement of treasury stock, Shares			445	(445)
Foreign currency translation adjustments, net of tax	22,710					22,710
Net earnings	172,640						172,640
Ending Balance at Dec. 31, 2020	$ 1,342,429		$ 351		$ 364,288	$ (15,455)	$ 993,245
Ending Balance, Shares at Dec. 31, 2020			35,103

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Statement Of Stockholders Equity [Abstract]
Equity component of convertible senior notes, Deferred tax	$ 14,819
Equity component of convertible senior notes, issuance cost	1,700
Purchase of note hedge related to convertible senior notes, deferred tax	$ 16,047

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net earnings	$ 172,640	$ 159,407	$ 163,677
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	65,560	46,209	37,458
Provision for losses on accounts receivable	10,163	5,079	4,776
Non-cash stock-based compensation	17,727	16,011	15,355
Deferred income taxes	(13,246)	7,418	9,126
Amortization of debt discount and issuance costs	16,217	6,652
Other adjustments	6,272	4,894	3,929
Changes in assets and liabilities:
Increase in accounts receivable	(132,599)	(118,971)	(46,883)
Decrease in inventories	1,029	11,944	46,534
Decrease (increase) in other assets	7,367	(129,745)	12,424
Increase (decrease) in accounts payable	152,235	(612)	29,844
Increase in accrued expenses and other liabilities	52,217	119,590	16,407
Net cash provided by operating activities	355,582	127,876	292,647
Cash flows from investing activities:
Proceeds from sale of assets held for sale	40,295
Acquisitions, net of cash and cash equivalents acquired	(6,405)	(664,287)	(74,938)
Purchases of property and equipment	(24,184)	(69,086)	(17,251)
Proceeds from sale of foreign entity			479
Net cash provided by (used in) investing activities	9,706	(733,373)	(91,710)
Cash flows from financing activities:
Borrowings on senior revolving credit facility		242,936	569,232
Repayments on senior revolving credit facility		(242,936)	(686,732)
Borrowings on accounts receivable securitization financing facility		2,364,500	3,357,000
Repayments on accounts receivable securitization financing facility		(2,558,500)	(3,188,000)
Repayments under Term Loan A			(166,250)
Net borrowing (repayments) under inventory financing facility	103,254	(50,454)	(15,338)
Proceeds from issuance of convertible senior notes		341,250
Proceeds from issuance of warrants		34,440
Purchase of note hedge related to convertible senior notes		(66,325)
Repurchases of treasury stock	(25,000)	(27,899)	(22,069)
Other payments	(8,661)	(9,396)	(6,871)
Net cash (used in) provided by financing activities	(361,791)	577,587	(159,028)
Foreign currency exchange effect on cash, cash equivalents and restricted cash balances	10,788	(86)	(5,061)
Increase (decrease) in cash, cash equivalents and restricted cash	14,285	(27,996)	36,848
Cash, cash equivalents and restricted cash at beginning of year	116,297	144,293	107,445
Cash, cash equivalents and restricted cash at end of year	130,582	116,297	$ 144,293
ABL Facility [Member]
Cash flows from financing activities:
Borrowings on senior revolving credit facility	3,030,679	1,680,515
Repayments on senior revolving credit facility	$ (3,462,063)	$ (1,130,544)

Operations and Summary of Signi

Operations and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Operations and Summary of Significant Accounting Policies	(1) Operations and Summary of Significant Accounting Policies Description of Business We empower organizations of all sizes with Intelligent Technology Solutions TM Operating Segment Geography North America United States ("U.S.") and Canada EMEA Europe, Middle East and Africa APAC Asia-Pacific Our offerings in North America and certain countries in EMEA and APAC include hardware, software and services. Our offerings in the remainder of our EMEA and APAC segments are largely software and certain software-related services. Acquisitions Effective February 28, 2020, we acquired vNext SAS (“vNext”), a French digital consulting services and managed services provider. The acquisition was funded using cash on hand. Effective August 30, 2019, we acquired PCM, Inc. (“PCM”), a provider of multi-vendor technology offerings, including hardware, software and services, for a purchase price of approximately $745,562,000, including cash and cash equivalents of $84,637,000 and the payment of PCM’s outstanding debt. The acquisition was funded through a combination of using cash on hand and borrowings under our senior secured revolving credit facility (the “ABL facility”). Effective August 1, 2018, we acquired Cardinal Solutions Group, Inc. (“Cardinal”), a digital solutions provider, for a purchase price, net of cash acquired, of approximately $78,400,000, including the final working capital adjustment and tax gross up adjustments. The acquisition was funded using cash on hand. Our results of operations include the results of vNext, PCM and Cardinal from their respective acquisition dates. (See Note 20 for a discussion of our acquisitions). Principles of Consolidation and Presentation The consolidated financial statements include the accounts of Insight Enterprises, Inc. and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. Included in our accounts receivable, net balance at December 31, 2020 and 2019 is $8,398,000 and $15,078,000, respectively, of accounts receivable from an unconsolidated affiliate. References to “the Company,” “Insight,” “we,” “us,” “our” and other similar words refer to Insight Enterprises, Inc. and its consolidated subsidiaries, unless the context suggests otherwise. Acquisition Accounting The Company accounts for all business combinations using the acquisition method of accounting, which allocates the fair value of the purchase consideration to the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values. The excess of the purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. When determining the fair values of assets acquired and liabilities assumed, management makes estimates and assumptions. Initial purchase price allocations are subject to revision within the measurement period, not to exceed one year from the date of acquisition. Acquisition-related expenses and transaction costs associated with business combinations are expensed as incurred. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements. Additionally, these estimates and assumptions affect the reported amounts of net sales and expenses during the reporting period. Actual results could differ from those estimates. On an ongoing basis, we evaluate our estimates, including those related to sales recognition, anticipated achievement levels under partner funding programs, assumptions related to stock-based compensation valuation, allowances for doubtful accounts, valuation of inventories, litigation-related obligations, valuation allowances for deferred tax assets and impairment of long-lived assets, including purchased intangibles and goodwill, if indicators of potential impairment exist. Cash, Cash Equivalents and Restricted Cash We consider all highly liquid investments with maturities at the date of purchase of three months or less to be cash equivalents. Book overdrafts represent the amount by which outstanding checks issued, but not yet presented to our banks for disbursement, exceed balances on deposit in applicable bank accounts and a legal right of offset with our positive cash balances in other financial institution accounts does not exist. Our book overdrafts, which are not directly linked to a credit facility or other bank overdraft arrangement, do not result in an actual bank financing, but rather constitute normal unpaid trade payables at the end of a reporting period. These amounts are included within our accounts payable balance in our consolidated balance sheets. The changes in these book overdrafts are included within the changes in accounts payable line item as a component of cash flows from operating activities in our consolidated statements of cash flows. Restricted cash generally includes any cash that is restricted as to withdrawal or usage. These amounts are included with cash and cash equivalents on the consolidated statement of cash flows. All cash receipts/payments with third parties directly to/from restricted cash accounts are reported as an operating, investing or financing cash flow, based on the nature of the transaction. Allowance for Doubtful Accounts We establish an allowance for doubtful accounts to reflect our best estimate of probable losses inherent in our accounts receivable balance. The allowance is based on our evaluation of the aging of the receivables, historical write-offs and the current economic environment. We write off individual accounts against the reserve when we no longer believe that it is probable that we will collect the receivable because we become aware of a client’s or partner’s inability to meet its financial obligations. Such awareness may be as a result of bankruptcy filings, or deterioration in the client’s or partner’s operating results or financial position. Inventories We state inventories, principally purchased IT hardware, at the lower of weighted average cost (which approximates cost under the first-in, first-out method) or net realizable value. We evaluate inventories for excess, obsolescence or other factors that may render inventories unmarketable at normal margins. Write-downs are recorded so that inventories reflect the approximate net realizable value and take into account contractual provisions with our partners governing price protection, stock rotation and return privileges relating to obsolescence. Because of the large number of transactions and the complexity of managing the price protection and stock rotation process, estimates are made regarding write-downs of the carrying amount of inventories. Additionally, assumptions about future demand, market conditions and decisions by manufacturers/publishers to discontinue certain products or product lines can affect our decision to write down inventories. Property and Equipment We record property and equipment at cost. We capitalize major improvements and betterments, while maintenance, repairs and minor replacements are expensed as incurred. Depreciation or amortization is provided using the straight-line method over the following estimated economic lives of the assets: Estimated Economic Life Leasehold improvements Shorter of underlying lease term or asset life Furniture and fixtures 2 – 7 years Equipment 3 – 5 years Software 3 – 10 years Buildings 29 years External direct costs of materials and services consumed in developing or obtaining internal-use computer software and payroll and payroll-related costs for teammates who are directly associated with and who devote time to internal-use computer software development projects, to the extent of the time spent directly on the project and specific to application development, are capitalized. Reviews are regularly performed to determine whether facts and circumstances exist which indicate that the economic life is shorter than originally estimated or the carrying amount of assets may not be recoverable. When an indication exists that the carrying amount of long-lived assets may not be recoverable, we assess the recoverability of our assets by comparing the projected undiscounted net cash flows associated with the related asset or group of assets over their remaining lives against their respective carrying amounts. Such impairment test is based on the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets and liabilities. Impairment, if any, is based on the excess of the carrying amount over the estimated fair value of those assets. Goodwill Goodwill is recorded when the purchase price paid for an acquisition exceeds the estimated fair value of net identified tangible and intangible assets acquired. Goodwill is tested for impairment at the reporting unit level on an annual basis in the fourth quarter and between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying value. The Company has three reporting units, which are the same as our operating segments. Multiple valuation techniques would likely be used to assess the fair value of the reporting unit. These techniques include the use of estimates and assumptions that are inherently uncertain. Changes in these estimates and assumptions could materially affect the determination of fair value or goodwill impairment, or both. Intangible Assets We amortize finite lived intangible assets acquired in business combinations using the straight-line method over the estimated economic lives of the intangible assets from the date of acquisition. We regularly perform reviews to determine if facts and circumstances exist which indicate that the economic lives of our intangible assets are shorter than originally estimated or the carrying amount of these assets may not be recoverable. When an indication exists that the carrying amount of intangible assets may not be recoverable, we assess the recoverability of our assets by comparing the projected undiscounted net cash flows associated with the related asset or group of assets over their remaining lives against their respective carrying amounts. Such impairment test is based on the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets and liabilities. Impairment, if any, is based on the excess of the carrying amount over the estimated fair value of those assets. Leases We adopted ASU No. 2016-02, “Leases” (Topic 842) with a date of initial application of January 1, 2019. As a result, we updated our accounting policy for leases. We determine if a contract or arrangement is, or contains, a lease at inception. Balances related to operating leases are included in other assets, other current liabilities, and other liabilities in our consolidated balance sheet. Balances related to financing leases are included in property and equipment, current portion of long-term debt, and long-term debt in our consolidated balance sheet. Right of use (“ROU”) assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities of $65,922,000 and $70,512,000, respectively, were recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. We use the implicit rate when readily determinable. The operating lease ROU asset includes any prepaid lease payments and additional direct costs and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Self-Insurance We are self-insured in the U.S. for medical insurance up to certain annual stop-loss limits and workers’ compensation claims up to certain deductible limits. We establish reserves for claims, both reported and incurred but not reported, using currently available information as well as our historical claims experience. Treasury Stock We record repurchases of our common stock as treasury stock at cost. We also record the subsequent retirement of these treasury shares at cost. The excess of the cost of the shares retired over their par value is allocated between additional paid-in capital and retained earnings. The amount recorded as a reduction of paid-in capital is based on the excess of the average original issue price of the shares over par value. The remaining amount is recorded as a reduction of retained earnings. Sales Recognition Revenue is measured based on the consideration specified in a contract with a client, and excludes any sales incentives and amounts collected on behalf of third parties. The Company recognizes revenue when it satisfies a performance obligation by transferring control of a product or service or by arranging for the sales of a vendor’s products or service to a client. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by the Company from a client, are excluded from revenue. We record the freight we bill to our clients as product net sales and the related freight costs we pay as product costs of goods sold. Nature of Goods and Services We sell hardware and software products on both a stand-alone basis without any services and as solutions bundled with services. When we provide a combination of hardware and software products with the provision of services, we separately identify our performance obligations under our contract with the client as the distinct goods (hardware and/or software products) or services that will be provided. The total transaction price for an arrangement with multiple performance obligations is allocated at contract inception to each distinct performance obligation in proportion to its stand-alone selling price. The stand-alone selling price is the price at which we would sell a promised good or service separately to a client. We estimate the price based on observable inputs, including direct labor hours and allocable costs, or use observable stand-alone prices when they are available. Product Offerings Hardware We recognize hardware product revenue on a gross basis at the point in time when a client takes control of the hardware, which typically occurs when title and risk of loss have passed to the client at its destination. Our selling terms and conditions specify Free On Board (“F.O.B.”) destination contractual terms such that control is transferred from the Company at the point in time when the product is received by the client. The transaction price for hardware sales is adjusted for estimated product returns that we expect to occur under our return policy based upon historical return rates. We leverage drop-shipment arrangements with many of our partners and suppliers to deliver products to our clients without having to physically hold the inventory at our warehouses, thereby increasing efficiency and reducing costs. We recognize revenue for drop-shipment arrangements on a gross basis as the principal in the transaction when the product is received by the client because we control the product prior to transfer to the client. In addition to other factors considered, we assume primary responsibility for fulfillment in the arrangement, we assume inventory risk if the product is returned by the client, we set the price of the product charged to the client and we work closely with our clients to determine their hardware specifications. Bill and Hold Transactions We offer a service to our customers whereby clients may purchase product that we procure on their behalf and, at our clients’ direction, store the product in our warehouse for a designated period of time, with the intention of deploying the product to the clients’ designated locations at a later date. These warehousing services are designed to help our clients with inventory management challenges associated with technology roll-outs, product that is moving to end of life, or clients needing integrated stock available for immediate deployment. The client is invoiced and title transfers to the client upon receipt of the product at our warehouse. These product contracts are non-cancelable with customary credit terms beginning the date the product is received in our warehouse and the warranty periods begin on the date of invoice. Revenue is recognized for the sale of the product to the client upon receipt of the product at our warehouse. Software We recognize revenue from software sales on a gross basis at the point in time when the client acquires the right to use or copy software under license and control transfers to the client. For renewals, revenue is recognized upon the commencement of the software license agreement or when the renewal term begins, as applicable. A substantial portion of the software licenses we sell are perpetual software licenses and do not require renewal or extension after their initial purchase by the client. Such perpetual licenses are periodically subject to true-up, whereby additional perpetual licenses are sold under the client’s pre-existing master agreement. Such true-ups are generally sold in arrears, and clients are invoiced for the additional licenses they had already been utilizing. Since the client already possessed copies of the licensed software prior to the true-up, software revenue related to the underlying additional licenses is recognized when we agree to the true-up with our client and the partner. For sales transactions for certain security software products that are sold with integral third-party delivered software maintenance, we record the software license on a net basis, as the agent in the arrangement. Services Offerings Software Maintenance Software maintenance agreements provide our clients with the right to obtain any software upgrades, bug fixes and help desk and other support services directly from the software publisher at no additional charge during the term of the software maintenance agreements. We act as the software publisher’s agent in selling these software maintenance agreements and do not assume any performance obligation to the client under the agreements. As a result, we are the agent in these transactions and these sales are recorded on a net sales recognition basis. Under net sales recognition, the cost of the software maintenance agreement is recorded as a reduction to sales, resulting in net sales equal to the gross profit on the transaction, and there are no costs of goods sold. Because we are acting as the software publisher’s agent, revenue is recognized when the parties agree to the initial purchase, renewal or extension as our agency services are then complete. W e report all fees earned from activities reported net within our services net sales category in our consolidated statements of operations. Vendor Direct Support Services Contracts Clients may purchase a vendor direct support services contract through us. Under these contracts, our clients call the manufacturer/publisher or its designated service organization directly for both the initial technical triage and any follow-up assistance. We act as the manufacturer/publisher’s agent in selling these support service contracts and do not assume any performance obligation to the client under the arrangements. As a result, these sales are recorded on a net sales recognition basis similar to software maintenance agreements, as discussed above. Because we are acting as the agent, revenue is recognized when the parties agree to the purchase of the support services contract as our agency services are then complete. Cloud / Software-as-a-Service Offerings Cloud or software-as-a-service (“SaaS”) subscription products provide our clients with access to software products hosted in the public cloud without the client taking possession of the software. We act as the agent in selling these software-as-a service subscription products. We do not take control of the software products or assume any performance obligations to the clients related to the provisioning of the offerings in the cloud. As a result, these sales are recorded on a net sales recognition basis. We report all fees earned from activities recognized net within our services net sales category in our consolidated statements of operations. Because we are acting as the agent in the transaction, revenue is recognized when the parties agree to the purchase of the cloud or SaaS offerings as our agency services are then complete. Often, these agency fees are based on end-client usage and therefore are variable throughout the term of the service contract. Where this variable consideration is uncertain, we recognize our agency revenue to the extent that a significant reversal will not occur. Insight Delivered Services We design, procure, deploy, implement and manage solutions that combine hardware, software and services to help businesses run smarter. Such services are provided by us or third-party sub-contract vendors as part of bundled arrangements, or are provided separately on a stand-alone basis as technical, consulting or managed services engagements. If the services are provided as part of a bundled arrangement with hardware and software, the hardware, software and services are generally distinct performance obligations. In general, we recognize revenue from services engagements as we perform the underlying services and satisfy our performance obligations. We recognize revenue from sales of services by measuring progress toward complete satisfaction of the related service performance obligation. Billings for such services that are made in advance of the related revenue recognized are recorded as a contract liability. Specific revenue recognition practices for certain of our services offerings are described in further detail below. Time and Materials Services Contracts We recognize revenue for professional services engagements that are on a time and materials basis based upon hours incurred for the performance completed to date for which we have the right to consideration, even if such amounts have not yet been invoiced as of period end. Fixed Fee Services Contracts We recognize revenue on fixed fee professional services contracts using a proportional performance method of revenue recognition based on the ratio of direct labor and other allocated costs incurred to total estimated direct labor and other allocated costs. OneCall Support Services Contracts When we sell certain hardware and/or software products to our clients, we also enter into service contracts with them. These contracts are support service agreements for the hardware and/or software products that were purchased from us. Under certain support services contracts, although we purchase third-party support contracts for maintenance on the specific hardware or software products we have sold, our internal support desk assists the client first by performing an initial technical triage to determine the source of the problem and whether we can direct the client on how to fix the problem. We refer to these services as “OneCall.” We act as the principal in the transaction because we perform the OneCall services over the term of the support service contract and we set the price of the service charged to the client . As a result, we recognize revenue from OneCall extended service contracts on a gross sales recognition basis . We recognize the revenue ratably over the contract term of the stand ready obligation, generally one to three years . On our consolidated balance sheet, a significant portion of our contract liabilities balance relates to OneCall support services agreements for which clients have paid or have been invoiced but for which we have not yet recognized the applicable services revenue. We also defer incremental direct costs to fulfill our service contracts that we prepay to third parties for direct support of our fulfillment of the service contract to our clients under our contract terms and amortize them into operations over the term of the contracts. Third-party Provided Services A majority of our third-party sub-contractor services contracts are entered into in conjunction with other services contracts under which the services are performed by Insight teammates. We have concluded that we control all services under the contract and can direct the third-party sub-contractor to provide the requested services. As such, we act as the principal in the transaction and record the services under a gross sales recognition basis, with the selling price being recorded in sales and our cost to the third-party service provider being recorded in costs of goods sold. For certain third-party service contracts in which we do not control the services prior to transferring to our clients because we are not responsible for fulfillment of the services, we have concluded that we are an agent in the transaction and record revenue on a net sales recognition basis. Costs of Goods Sold Costs of goods sold include product costs, direct costs incurred associated with delivering services, outbound and inbound freight costs and provisions for inventory reserves. These costs are reduced by provisions for supplier discounts and certain payments and credits received from partners, as described under “Partner Funding” below. Selling and Administrative Expenses Selling and administrative expenses include salaries and wages for teammates who are not directly associated with delivering services, bonuses and incentives, stock-based compensation expense, employee-related expenses, facility-related expenses, marketing and advertising expense, reduced by certain payments and credits received from partners related to shared marketing expense programs, as described under “Partner Funding” below, depreciation of property and equipment, professional fees, amortization of intangible assets, provisions for losses on accounts receivable and other operating expenses. Partner Funding We receive payments and credits from partners, including consideration pursuant to volume sales incentive programs, volume purchase incentive programs and shared marketing expense programs. Partner funding received pursuant to volume sales incentive programs is recognized as it is earned as a reduction to costs of goods sold. Partner funding received pursuant to volume purchase incentive programs is allocated as a reduction to inventories based on the applicable incentives earned from each partner and is recorded in cost of goods sold as the related inventory is sold. Partner funding received pursuant to shared marketing expense programs is recorded as it is earned as a reduction of the related selling and administrative expenses in the period the program takes place if the consideration represents a reimbursement of specific, incremental, identifiable costs. Consideration that exceeds the specific, incremental, identifiable costs is classified as a reduction of costs of goods sold. The amount of partner funding recorded as a reduction of selling and administrative expenses in our statements of operations totaled $85,888,000, $77,668,000 and $68,571,000 in 2020, 2019 and 2018, respectively. Concentrations of Risk Credit Risk Although we are affected by the international economic climate, management does not believe material credit risk concentration existed at December 31, 2020. We monitor our clients’ financial condition and do not require collateral. No single client accounted for more than 10% of our consolidated net sales in 2020. Partner Risk Purchases from Microsoft and Tech Data (a distributor) accounted for approximately 21% and 11%, respectively, of our aggregate purchases in 2020. No other partner accounted for more than 10% of purchases in 2020. Our top five partners as a group for 2020 were Microsoft, Tech Data (a distributor), Dell, Ingram Micro (a distributor) and Cisco Systems, and approximately 56% of our total purchases during 2020 came from this group of partners. Although brand names and individual products are important to our business, we believe that competitive sources of supply are available in substantially all of our product categories such that, with the exception of Microsoft, we are not dependent on any single partner for sourcing products. Advertising Costs Advertising costs are expensed as they are incurred. Advertising expense of $60,865,000, $62,913,000 and $57,448,000 was recorded in 2020, 2019 and Stock-Based Compensation Stock-based compensation is measured based on the fair value of the award on the date of grant and the corresponding expense is recognized over the period during which an employee is required to provide service in exchange for the reward. Stock-based compensation expense is classified in the same line item of our consolidated statements of operations as other payroll-related expenses specific to the employee. Compensation expense related to service-based restricted stock units (“RSUs”) is recognized on a straight-line basis over the requisite service period for the entire award. Compensation expense related to performance-based RSUs is recognized on a straight-line basis over the requisite service period for each separately vesting portion of the award as if the award was, in-substance, multiple awards (i.e., a graded vesting basis). Forfeitures are recognized as they occur. Foreign Currencies We use the U.S. dollar as our reporting currency. The functional currencies of our foreign subsidiaries are the local currencies. Accordingly, assets and liabilities of the subsidiaries are translated into U.S. dollars at the exchange rate in effect at the balance sheet dates. Income and expense items are translated at the average exchange rate for each month within the year. The resulting translation adjustments are recorded directly in accumulated other comprehensive income, net of tax – foreign currency translation adjustments as a separate component of stockholders’ equity. Net foreign currency transaction gains/losses, including transaction gains/losses on intercompany balances that are not of a long-term investment nature and non-functional currency cash balances, are reported in other expense (income), net within non-operating (income) expense in our consolidated statements of operations. Income Taxes Income taxes are accounted for under the asset and liability 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 bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable earnings in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in earnings in the period that includes the enactment date. We recognize net deferred tax assets to the extent that we believe these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies and results of recent operations. If we determine that we would be able to realize our deferred tax assets in the future in excess of their net recorded amount, we would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. We record uncertain tax positions on the basis of a two-step process whereby (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. Interest and penalties related to unrec

Sales Recognition

Sales Recognition	12 Months Ended
	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Sales Recognition	(2) Sales Recognition Disaggregation of Revenue In the following table, revenue is disaggregated by our reportable operating segments, which are primarily defined by Year Ended December 31, 2020 North America EMEA APAC Consolidated Major Offerings Hardware $ 4,418,295 $ 617,825 $ 31,953 $ 5,068,073 Software 1,260,757 760,562 82,763 2,104,082 Services 935,980 176,838 55,606 1,168,424 $ 6,615,032 $ 1,555,225 $ 170,322 $ 8,340,579 Major Client Groups Large Enterprise / Corporate $ 4,507,041 $ 1,101,557 $ 62,734 $ 5,671,332 Small and Medium-Sized Businesses 1,395,298 61,535 60,740 1,517,573 Public Sector 712,693 392,133 46,848 1,151,674 $ 6,615,032 $ 1,555,225 $ 170,322 $ 8,340,579 Revenue Recognition based on acting as Principal or Agent in the Transaction Gross revenue recognition (Principal) $ 6,284,948 $ 1,452,115 $ 146,770 $ 7,883,833 Net revenue recognition (Agent) 330,084 103,110 23,552 456,746 $ 6,615,032 $ 1,555,225 $ 170,322 $ 8,340,579 Year Ended December 31, 2019 North America EMEA APAC Consolidated Major Offerings Hardware $ 3,957,507 $ 622,949 $ 34,965 $ 4,615,421 Software 1,269,983 753,729 92,988 2,116,700 Services 796,815 149,966 52,288 999,069 $ 6,024,305 $ 1,526,644 $ 180,241 $ 7,731,190 Major Client Groups Large Enterprise / Corporate $ 4,466,384 $ 1,126,388 $ 59,786 $ 5,652,558 Small and Medium-Sized Businesses 960,432 76,666 65,033 1,102,131 Public Sector 597,489 323,590 55,422 976,501 $ 6,024,305 $ 1,526,644 $ 180,241 $ 7,731,190 Revenue Recognition based on acting as Principal or Agent in the Transaction Gross revenue recognition (Principal) $ 5,759,247 $ 1,432,300 $ 156,279 $ 7,347,826 Net revenue recognition (Agent) 265,058 94,344 23,962 383,364 $ 6,024,305 $ 1,526,644 $ 180,241 $ 7,731,190 Year Ended December 31, 2018 North America EMEA APAC Consolidated Major Offerings Hardware $ 3,610,356 $ 653,499 $ 29,496 $ 4,293,351 Software 1,112,715 736,509 107,363 1,956,587 Services 639,910 140,233 50,055 830,198 $ 5,362,981 $ 1,530,241 $ 186,914 $ 7,080,136 Major Client Groups Large Enterprise / Corporate $ 3,951,900 $ 1,134,696 $ 49,826 $ 5,136,422 Small and Medium-Sized Businesses 912,208 67,727 60,521 1,040,456 Public Sector 498,873 327,818 76,567 903,258 $ 5,362,981 $ 1,530,241 $ 186,914 $ 7,080,136 Revenue Recognition based on acting as Principal or Agent in the Transaction Gross revenue recognition (Principal) $ 5,143,228 $ 1,439,979 $ 164,394 $ 6,747,601 Net revenue recognition (Agent) 219,753 90,262 22,520 332,535 $ 5,362,981 $ 1,530,241 $ 186,914 $ 7,080,136 Contract Balances The following table provides information about receivables and contract liabilities as of December 31, 2020 and 2019 (in thousands): December 31, December 31, 2020 2019 Current receivables, which are included in “Accounts receivable, net” $ 2,685,448 $ 2,511,383 Non-current receivables, which are included in “Other assets” 154,662 154,417 Contract liabilities, which are included in “Accrued expenses and other current liabilities” and “Other liabilities” 107,158 84,814 Significant changes in the contract liabilities balances during the year ended December 31, 2020 are as follows (in thousands): Increase (Decrease) Balances at December 31, 2018 $ 82,117 Recognition of the beginning contract liabilities to revenue, as the result of performance obligations satisfied (73,750 ) Cash received in advance and not recognized as revenue 69,376 Contract liabilities assumed in an acquisition 7,071 Balances at December 31, 2019 $ 84,814 Recognition of the beginning contract liabilities to revenue, as the result of performance obligations satisfied (59,553 ) Cash received in advance and not recognized as revenue 81,897 Balances at December 31, 2020 $ 107,158 Transaction price allocated to the remaining performance obligations The following table includes estimated net sales related to performance obligations that are unsatisfied (or partially unsatisfied) as of December 31, 2020 that are expected to be recognized in the future (in thousands): Services 2021 111,295 2022 34,948 2023 14,105 2024 and thereafter 6,631 Total remaining performance obligations $ 166,979 With the exception of remaining performance obligations associated with our OneCall Support Services contracts which are included in the table above regardless of original duration, remaining performance obligations that have original expected duration of one year or less are not included in the table above. Amounts not included in the table above have an average original expected duration of nine months. Additionally, for our time and material services contracts, whereby we have the right to consideration from a client in an amount that corresponds directly with the value to the client of our performance completed to date, we recognized revenue in the amount to which we have a right to invoice as of December 31, 2020 and do not disclose information about related remaining performance obligations in the table above. Our open time and material contracts at December 31, 2020, have an average expected duration of 21 months. The majority of our backlog historically has been and continues to be open cancelable purchase orders. We do not believe that backlog as of any particular date is predictive of future results, therefore we do not include performance obligations under open cancelable purchase orders, which do not qualify for revenue recognition as of December 31, 2020, in the table above.

Assets Held for Sale

Assets Held for Sale	12 Months Ended
	Dec. 31, 2020
Property Plant And Equipment Assets Held For Sale Disclosure [Abstract]
Assets Held For Sale	(3) Assets Held for Sale During 2020, we completed the sale of our properties in Irvine, California and El Segundo, California for approximately $14,218,000 and $26,404,000, respectively. Our property in Santa Monica, California was reclassified as held-in-use as we reevaluate our sale options. Our properties in Tempe, Arizona and Woodbridge, Illinois continued to be classified as held-for-sale for the remainder of 2020. During 2019, we completed the purchase of real estate in Chandler, Arizona that we intend to use as our global corporate headquarters. See note 22 for additional information on the subsequent event regarding the sale of our Tempe, Arizona and Woodbridge, Illinois properties.

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2020
Property Plant And Equipment [Abstract]
Property and Equipment	(4) Property and Equipment Property and equipment consist of the following (in thousands): December 31, 2020 2019 Software $ 159,413 $ 114,674 Buildings 66,842 92,092 Equipment 62,209 60,661 Furniture and fixtures 38,133 34,768 Leasehold improvements 35,665 33,668 Land 39,819 31,374 402,081 367,237 Accumulated depreciation and amortization (256,065 ) (236,330 ) Property and equipment, net $ 146,016 $ 130,907 Depreciation and amortization expense related to property and equipment was $28,025,000, $22,538,000 and $21,721,000 in 2020, 2019 and 2018, respectively. On November 1, 2019, we completed the purchase of real estate in Chandler, Arizona for approximately $48,000,000 that we intend to use as our global corporate headquarters. The property contains a building and some infrastructure in place that we will complete readying for our use in 2021. We intend to sell our current properties in Tempe, Arizona. See note 22 for additional information on the subsequent event regarding the sale of our Tempe, Arizona and Woodbridge, Illinois properties. In 2020, we completed the sale of our property in Irvine, California and El Segundo, California for approximately $ 14,218,000 and $ 26,404,000 , respectively . Included within the software, buildings and land values presented above are assets in the process of being readied for use in the amounts of approximately $5,650,000, $29,427,000 and $11,700,000, respectively. Depreciation on these assets will commence, as appropriate, when they are ready for use and placed in service.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	(5) Goodwill The changes in the carrying amount of goodwill for the year ended December 31, 2020 are as follows (in thousands): North America EMEA APAC Consolidated Goodwill $ 479,690 $ 155,188 $ 20,797 $ 655,675 Accumulated impairment losses (323,422 ) (151,439 ) (13,973 ) (488,834 ) Goodwill acquired during 2019 240,550 7,910 — 248,460 Foreign currency translation adjustment — (87 ) (65 ) (152 ) Balance at December 31, 2019 $ 396,818 $ 11,572 $ 6,759 $ 415,149 Goodwill acquired during 2020 — 4,865 — 4,865 Measurement period adjustments during 2020 5,711 (677 ) — 5,034 Foreign currency translation adjustment 947 2,767 606 4,320 Balance at December 31, 2020 $ 403,476 $ 18,527 $ 7,365 $ 429,368 On February 28, 2020, we acquired vNext, which has been integrated into our EMEA business. Under the acquisition method of accounting, the purchase price for the acquisition was allocated to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values. The excess purchase price over fair value of net assets acquired was recorded as goodwill in the EMEA reporting unit. The primary driver for this acquisition was to strengthen our capacity to deliver consulting and implementation services to support clients’ digital transformation initiatives. On August 30, 2019, we acquired PCM, which has been integrated into our North America and EMEA businesses. Under the acquisition method of accounting, the preliminary purchase price for the acquisition was allocated to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values. The excess purchase price over fair value of net assets acquired of approximately $253,894,000, net of measurement period adjustment of $5,034,000 recognized in 2020, was recorded as goodwill in the North America and EMEA reporting units (see Note 20). The primary driver for this acquisition was to help existing PCM clients in positioning their businesses for future growth, transforming and securing their data platforms, creating modern and mobile experiences for their workforce and optimizing the procurement of technology. The addition of PCM complements our supply chain optimization solution offering, adding scale and clients in the mid-market and corporate space in North America. On August 1, 2018, we acquired Cardinal, which has been integrated into our North America business. Under the acquisition method of accounting, the purchase price for the acquisition was allocated to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values. The excess purchase price over fair value of net assets acquired of approximately $36,040,000, net of a measurement period adjustment of $400,000 recognized in 2019, was recorded as goodwill in the North America reporting unit (see Note 20). The primary driver for this acquisition was to strengthen our services capabilities and bring value to our clients within our digital innovation services solution offering. During 2020, we periodically assessed whether any indicators of impairment existed which would require us to perform an interim impairment review. As of each interim period end during the year, we concluded that a triggering event had not occurred that would more likely than not reduce the fair value of our reporting units below their carrying values. We performed our annual test of goodwill for impairment during the fourth quarter of 2020. The results of the qualitative goodwill impairment test indicated that the fair value s of our North America , EMEA and APAC reporting unit s w ere in excess of the ir respective carrying value s .

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	(6) Intangible Assets Intangible assets consist of the following (in thousands): December 31, 2020 2019 Customer relationships $ 342,492 $ 336,455 Other 7,906 15,621 350,398 352,076 Accumulated amortization (103,483 ) (73,492 ) Intangible assets, net $ 246,915 $ 278,584 During 2020, we periodically assessed whether any indicators of impairment existed related to our intangible assets. As of each interim period end during the year, we concluded that a triggering event had not occurred that would more likely than not reduce the fair value of our intangible assets below their carrying values. Amortization expense recognized in 2020, 2019 and 2018 was $37,535,000, $23,671,000 and $15,737,000, respectively. Future amortization expense for the remaining unamortized balance as of December 31, 2020 is estimated as follows (in thousands): Years Ending December 31, Amortization Expense 2021 $ 31,957 2022 31,084 2023 29,825 2024 28,344 2025 28,008 Thereafter 97,697 Total amortization expense $ 246,915

Accounts Payable - Inventory Fi

Accounts Payable - Inventory Financing Facilities	12 Months Ended
	Dec. 31, 2020
Payables And Accruals [Abstract]
Accounts Payable - Inventory Financing Facilities	(7) Accounts Payable - Inventory Financing Facilities We have entered into agreements with financial intermediaries to facilitate the purchase of inventory from various suppliers under certain terms and conditions, as described below. These amounts outstanding under these facilities are classified separately as accounts payable - inventory financing facilities in the accompanying consolidated balance sheets. Inventory Financing Facilities During 2020, we increased our maximum availability for vendor purchases under our unsecured inventory financing facility with MUFG Bank Ltd (“MUFG”) from $200,000,000 to $250,000,000. On July 6, 2020, we entered into a new unsecured inventory financing facility with a subsidiary of PNC Bank, N.A. (“PNC”), which replaced our previous facility with Wells Fargo Capital Finance, LLC. The aggregate availability for vendor purchases under the PNC facility is $250,000,000. As of December 31, 2020, our combined inventory financing facilities had a total maximum capacity of $500,000,000, of which $ 356,930,000 was outstanding at December 31, 2020. The facilities remain in effect until they are terminated by any of the parties. If balances are not paid within stated vendor terms, they will accrue interest at prime plus 2.00% and LIBOR plus 4.50% on the MUFG and PNC facilities, respectively. The PNC facility allows for an alternative rate to be identified if LIBOR is no longer available. Net amounts drawn down or repaid during the year on these facilities are classified within cash flows from financing activities in the accompanying consolidated statements of cash flows. Interest does not accrue on accounts payable under these facilities provided the accounts payable are paid within stated vendor terms (typically 60 days); however, we impute interest on the average daily balance outstanding during these stated vendor terms based on our incremental borrowing rate during the period. Imputed interest of $13,076,000, $10,801,000 and $10,593,000 was recorded in 2020, 2019 and 2018, respectively

Debt, Finance Leases and Other

Debt, Finance Leases and Other Financing Obligations	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Debt, Finance Leases and Other Financing Obligations	(8) Debt, Finance Leases and Other Financing Obligations Debt Our long-term debt consists of the following (in thousands): December 31, 2020 2019 ABL revolving credit facility $ 140,000 $ 570,706 Convertible senior notes due 2025 296,419 284,836 Finance leases and other financing obligations 2,267 3,822 Total 438,686 859,364 Less: current portion of long-term debt (1,105 ) (1,691 ) Long-term debt $ 437,581 $ 857,673 On August 30, 2019, we entered into a credit agreement (the “credit agreement”) providing for a senior secured revolving credit facility (the “ABL facility”), which has an aggregate U.S. dollar equivalent maximum borrowing amount of $1,200,000,000, including a maximum borrowing capacity that could be used for borrowing in certain foreign currencies of $150,000,000. While the ABL facility has a stated maximum amount, the actual availability under the ABL facility is limited by specified percentages of eligible accounts receivable and certain eligible inventory, in each case as set forth in the credit agreement. From time to time and at our option, we may request to increase the aggregate amount available for borrowing under the ABL facility by up to an aggregate of the U.S. dollar equivalent of $500,000,000, subject to customary conditions, including receipt of commitments from lenders. The ABL facility is guaranteed by certain of our material subsidiaries and is secured by a lien on certain of our assets and certain of each other borrower’s and each guarantor’s assets. The ABL facility matures on August 30, 2024. As of December 31, 2020, eligible accounts receivable and inventory were sufficient to permit access to the full $1,200,000,000 facility amount, of which $140,000,000 was outstanding. The interest rates applicable to borrowings under the ABL facility are based on the average aggregate excess availability under the ABL facility as set forth on a pricing grid in the credit agreement. Amounts outstanding under the ABL facility bear interest, payable quarterly, at a floating rate equal to a LIBOR rate plus a pre-determined spread of 1.25% to 1.50%. The floating interest rate applicable at December 31, 2020 was 1.40% per annum for the ABL facility. In addition, we pay a quarterly commitment fee on the unused portion of the facility of 0.25%, and our letter of credit participation fee ranges from 1.25% to 1.50%. During 2020, weighted average borrowings under our ABL facility were $339,474,000. Interest expense associated with the ABL facility was $14,541,000 in 2020, including the commitment fee and amortization of deferred financing fees. The ABL facility contains customary affirmative and negative covenants and events of default. If a default occurs (subject to customary grace periods and materiality thresholds) under the credit agreement, certain actions may be taken, including, but not limited to, possible termination of commitments and required payment of all outstanding principal amounts plus accrued interest and fees payable under the credit agreement. Convertible Senior Notes On August 15, 2019, we issued $300,000,000 aggregate principal amount of convertible senior notes (the “notes”) that mature on February 15, 2025. On August 23, 2019, we issued an additional $50,000,000 aggregate principal amount of the notes pursuant to the exercise in full by the initial purchasers of the notes of their option to purchase additional notes. The notes bear interest at an annual rate of 0.75% payable semiannually, in arrears, on February 15th and August 15th of each year. The notes are general unsecured obligations of Insight and are guaranteed on a senior unsecured basis by Insight Direct USA, Inc., a wholly owned subsidiary of Insight. Holders of the notes may convert their notes at their option at any time prior to the close of business on the business day immediately preceding June 15, 2024, under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on December 31, 2019 (and only during such calendar quarter), if the last reported sale price of our common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130 % of the conversion price on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “measurement period”) in which the trading price of our common stock per $ 1,000 principal amount of notes for each trading day of the measurement period was less than 98 % of the product of the last reported sale price of our common stock and the conversion rate on each such trading day; (3) if we call any or all of the notes for redemption, at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events. On or after June 15, 2024 until the close of business on the second scheduled trading day immediately preceding the maturity date, the holders may convert their notes at any time, regardless of the foregoing circumstances. Upon conversion, we will pay or deliver cash, shares of our common stock or a combination of the two, at our discretion. The conversion rate will initially be 14.6376 shares of common stock per $1,000 principal amount of notes (equivalent to an initial conversion price of approximately $68.32 per share of common stock). The conversion rate is subject to change in certain circumstances and will not be adjusted for any accrued and unpaid interest. In addition, following certain events that occur prior to the maturity date or following our issuance of a notice of redemption, the conversion rate is subject to an increase for a holder who elects to convert their notes in connection with those events or during the related redemption period in certain circumstances. If we undergo a fundamental change, the holders may require us to repurchase for cash all or any portion of their notes at a fundamental change repurchase price equal to 100% of the principal amount of the notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date. As of December 31, 2020, none of the criteria for a fundamental change or a conversion rate adjustment had been met. The maximum number of shares issuable upon conversion, including the effect of a fundamental change and subject to other conversion rate adjustments, would be 6,788,208. We may redeem for cash all or any portion of the notes, at our option, on or after August 20, 2022 if the last reported sale price of our common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on, and including, the trading day immediately preceding the date on which we provide notice of redemption at a redemption price equal to 100% of the principal amount of the notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. No sinking fund is provided for the notes. The notes are subject to certain customary events of default and acceleration clauses. As of December 31, 2020, no such events have occurred. The notes consist of the following balances reported within the consolidated balance sheet as of December 31, 2020 and 2019 (in thousands): December 31, 2020 2019 Liability: Principal $ 350,000 $ 350,000 Less: debt discount and issuance costs, net of accumulated accretion (53,581 ) (65,164 ) Net carrying amount $ 296,419 $ 284,836 Equity, net of deferred tax $ 44,731 $ 44,731 The remaining life of the debt discount and issuance cost accretion is approximately 4.125 years. The effective interest rate on the liability component of the notes is 4.325%. The following table summarizes the interest expense components resulting from the notes reported within the consolidated statement of operations for the year ended December 31, 2020 and 2019 (in thousands): December 31, 2020 2019 Contractual coupon interest $ 2,625 $ 984 Amortization of debt discount $ 10,226 $ 3,728 Amortization of debt issuance costs $ 1,359 $ 479 Convertible Note Hedge and Warrant Transaction In connection with the issuance of the notes, we entered into certain convertible note hedge and warrant transactions (the “Call Spread Transactions”) with respect to the Company’s common stock. The convertible note hedge consists of an option to purchase up to 5,123,160 common stock shares at a price of $68.32 per share. The hedge expires on February 15, 2025 and can only be concurrently executed upon the conversion of the notes. We paid approximately $66,325,000 for the convertible note hedge transaction. Additionally, we sold warrants to purchase 5,123,160 shares of common stock at a price of $103.12 per share. The warrants expire on May 15, 2025 and can only be exercised at maturity. The Company received aggregate proceeds of approximately $34,440,000 for the sale of the warrants. The Call Spread Transactions have no effect on the terms of the notes and reduce potential dilution by effectively increasing the initial conversion price of the notes to $103.12 per share of the Company’s common stock. Finance Leases and Other Financing Obligations From time to time, we enter into finance leases and other financing agreements with financial intermediaries to facilitate the purchase of products from certain vendors. The current and long-term portions of our finance lease and other financing obligations are included in the current and long-term portions of long-term debt in the table above and in our consolidated balance sheets as of December 31, 2020 and 2019.

Leases

Leases	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Leases	(9) Leases We lease office space, distribution centers, land, vehicles and equipment. Lease agreements with an initial term of 12 months or less are not recorded on the balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term. Certain lease agreements include one or more options to renew, with renewal terms that can extend the lease term from one to five years or more. The exercise of lease renewal options is at our sole discretion. Some agreements also include options to purchase the leased property. The estimated life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of exercise. Certain of our lease agreements include rental payments adjusted periodically for inflation. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. The following table provides information about the financial statement classification of our lease balances reported within the consolidated balance sheets as of December 31, 2020 and December 31, 2019 (in thousands): Leases Classification December 31, 2020 December 31, 2019 Assets Operating lease assets Other assets $ 79,418 $ 74,684 Finance lease assets Property and equipment (a) 2,103 3,297 Total lease assets $ 81,521 $ 77,981 Liabilities Current Operating lease liabilities Accrued expenses and other current liabilities $ 20,848 $ 19,648 Finance lease liabilities Current portion of long-term debt 1,105 1,691 Non-current Operating lease liabilities Other liabilities 65,192 60,285 Finance lease liabilities Long-term debt 1,162 2,131 Total lease liabilities $ 88,307 $ 83,755 (a) Recorded net of accumulated amortization of $2,162,000 and $861,000 as of December 31, 2020 and 2019, respectively. The following table provides information about the financial statement classification of our lease expenses reported within the consolidated statement of operations for the year ended December 31, 2020 and 2019 (in thousands): Lease cost Classification Year ended December 31, 2020 Year ended December 31, 2019 Operating lease cost (a) (b) Selling and administrative expenses $ 25,918 $ 21,393 Finance lease cost Amortization of leased assets Selling and administrative expenses 1,301 861 Interest on lease liabilities Interest expense, net 104 110 Total lease cost $ 27,323 $ 22,364 (a) Includes immaterial amounts recorded to cost of goods sold. (b) Excludes short-term and variable lease costs, which are immaterial. Future minimum lease payments under non-cancelable leases as of December 31, 2020 are as follows (in thousands): Operating leases Finance leases Total 2021 $ 23,144 $ 1,114 $ 24,258 2022 19,898 682 20,580 2023 14,104 476 14,580 2024 8,958 45 9,003 2025 7,061 — 7,061 After 2025 22,549 — 22,549 Total lease payments 95,714 2,317 98,031 Less: Interest (9,674 ) (50 ) (9,724 ) Present value of lease liabilities $ 86,040 $ 2,267 $ 88,307 Operating lease payments include $13.4 million related to options to extend lease terms that are reasonably certain of being exercised. The following table provides information about the remaining lease terms and discount rates applied as of December 31, 2020 and 2019: December 31, 2020 December 31, 2019 Weighted average remaining lease term (years) Operating leases 6.01 6.03 Finance leases 2.37 2.92 Weighted average discount rate (%) Operating leases 3.35 3.62 Finance leases 3.27 3.65 The following table provides other information related to leases for the year ended December 31, 2020 and 2019 (in thousands): December 31, 2020 December 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 25,849 $ 20,928 Leased assets obtained in exchange for new operating lease liabilities (a) 25,583 10,460 (a) Excludes operating lease assets acquired as part of the PCM acquisition of $17,951,000 in 2019. There were no major acquisitions in 2020.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	(10) Stock-Based Compensation We recorded the following pre-tax amounts in selling and administrative expenses for stock-based compensation, by operating segment, in the accompanying consolidated financial statements (in thousands): Years Ended December 31, 2020 2019 2018 North America $ 13,151 $ 12,055 $ 11,697 EMEA 3,953 3,437 3,170 APAC 623 519 488 Total Consolidated $ 17,727 $ 16,011 $ 15,355 Company Plan On April 3, 2020, our Board of Directors adopted and approved the new Insight Enterprises, Inc. 2020 Omnibus Plan (the “Plan”), subject to stockholder approval. The Plan was approved by our stockholders at our 2020 annual meeting on May 20, 2020 and, unless sooner terminated, will remain in place until May 30, 2030. The Plan allows the Company to grant options, stock appreciation rights, stock awards, restricted stock, stock units (which may also be referred to as “restricted stock units”), performance shares, performance units, cash-based awards and other awards payable in cash or shares of common stock to eligible non-employee directors, employees and consultants. Consultants and independent contractors are eligible if they provide bona fide services that are not related to capital raising or promoting or maintaining a market for the Company’s stock. The Company previously adopted the Amended Insight Enterprises, Inc. 2007 Omnibus Plan (the “Prior Plan”). The Prior Plan was approved by our stockholders on May 18, 2011 at our 2011 annual meeting. The Prior Plan shall remain in effect until all awards granted under the Prior Plan have been exercised, forfeited or cancelled or have otherwise expired or terminated. Any shares that remain outstanding or otherwise become available under the terms of the Prior Plan following the date the Plan is approved by the Company’s stockholders shall become available for issuance under the Plan. No further awards will be made under the Prior Plan. The Plan is administered by the Compensation Committee of Insight’s Board of Directors, and, except as provided below, the Compensation Committee has the exclusive authority to administer the Plan, including the power to determine eligibility, the types of awards to be granted, the price and the timing of awards. Under the Plan, the Compensation Committee may delegate some of its authority to our Chief Executive Officer to grant awards to individuals other than individuals who are subject to the reporting requirements of Section 16(a) of the Securities Exchange Act of 1934, as amended. As of December 31, 2020, of the 2,571,000 Accounting for Restricted Stock Units We issue RSUs as incentives to certain officers and teammates and as compensation to members of our Board of Directors. We recognize compensation expense associated with the issuance of such RSUs over the vesting period for each respective RSU. The total compensation expense associated with RSUs represents the value based upon the number of RSUs awarded multiplied by the closing price of our common stock on the date of grant. The number of RSUs to be awarded under our service-based RSUs is fixed at the grant date. The number of RSUs ultimately awarded under our performance-based RSUs varies based on whether the Company achieves certain financial results. We record compensation expense each period based on our estimate of the most probable number of RSUs that will be issued under the grants of performance-based RSUs. Recipients of RSUs do not have voting or dividend rights until the vesting conditions are satisfied and shares are released. As of December 31, 2020, total compensation cost related to nonvested RSUs not yet recognized is $27,413,000, which is expected to be recognized over the next 1.27 years on a weighted-average basis. The following table summarizes our RSU activity during 2020: Number Weighted Average Grant Date Fair Value Fair Value Nonvested at the beginning of year 923,400 $ 45.58 Granted 401,805 $ 59.31 Vested, including shares withheld to cover taxes (385,216 ) $ 42.60 $ 16,410,202 (a) Forfeited (76,271 ) $ 51.60 Nonvested at the end of year 863,718 $ 52.77 $ 65,720,303 (b) (a) The aggregate fair value of vested RSUs represents the total pre-tax fair value, based on the closing stock price on the day of vesting, which would have been received by holders of RSUs had all such holders sold their underlying shares on that date. The aggregate intrinsic value for RSUs which vested during 2019 and 2018 was $24,837,997 and $14,302,223, respectively. (b) The aggregate fair value of the nonvested RSUs and the RSUs expected to vest represents the total pre-tax fair value, based on our closing stock price of $76.09 as of December 31, 2020, which would have been received by holders of RSUs had all such holders sold their underlying shares on that date. During each of the years in the three-year period ended December 31, 2020, the RSUs that vested for teammates in the United States were net-share settled such that we withheld shares with value equivalent to the teammates’ minimum statutory United States tax obligation for the applicable income and other employment taxes and remitted the equivalent cash amount to the appropriate taxing authorities. The total shares withheld during 2020, 2019 and 2018 of 101,159, 115,831 and 88,638, respectively, were based on the value of the RSUs on their vesting dates as determined by our closing stock price on such dates. For 2020, 2019 and 2018, total payments for our teammates’ tax obligations to the taxing authorities were $5,964,000, $6,572,000 and $3,230,000, respectively, and are reflected as a financing activity within the accompanying consolidated statements of cash flows. These net-share settlements had the effect of repurchases of our common stock as they

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	( 1 1 ) Income Taxes The following table presents the U.S. and foreign components of earnings before income taxes and the related income tax expense (in thousands): Years Ended December 31, 2020 2019 2018 Earnings before income taxes: United States $ 154,788 $ 142,410 $ 145,907 Foreign 73,664 69,306 65,995 $ 228,452 $ 211,716 $ 211,902 Income tax expense: Current: U.S. Federal $ 38,732 $ 20,254 $ 18,334 U.S. State and local 8,203 5,457 3,218 Foreign 22,123 19,180 17,547 69,058 44,891 39,099 Deferred: U.S. Federal (10,048 ) 9,180 8,123 U.S. State and local (1,779 ) 1,210 1,142 Foreign (1,419 ) (2,972 ) (139 ) (13,246 ) 7,418 9,126 $ 55,812 $ 52,309 $ 48,225 The following schedule reconciles the differences between the U.S. federal income taxes at the U.S. statutory rate and our income tax expense (dollars in thousands): 2020 2019 2018 Statutory federal income tax rate $ 47,975 21.0 % $ 44,460 21.0 % $ 44,499 21.0 % State income tax expense, net of federal income tax benefit 6,280 2.7 7,239 3.4 6,767 3.2 Audits and adjustments, net 662 0.3 2,556 1.2 2,659 1.3 Change in valuation allowances 476 0.2 (2,739 ) (1.3 ) 60 — Foreign income taxed at different rates 3,825 1.7 4,024 1.9 2,639 1.2 Effects of U.S. tax reform — — — — (5,594 ) (2.7 ) Research and development credits (1,858 ) (0.8 ) (5,438 ) (2.6 ) (4,132 ) (1.9 ) Other, net (1,548 ) (0.7 ) 2,207 1.1 1,327 0.7 Effective tax rate $ 55,812 24.4 % $ 52,309 24.7 % $ 48,225 22.8 % On December 22, 2017, the U.S. enacted the Tax Cuts and Jobs Act (“TCJA 2017”), which significantly changed the U.S. tax law. In 2018 we completed our accounting for the tax effects of TCJA 2017 and recorded an incremental benefit of $5,600,000 against provisional amounts previously reported. On March 27, 2020, the U.S. enacted the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) to provide certain relief as a result of the COVID-19 pandemic, which included, among other things, provisions relating to net operating loss carrybacks and other beneficial income tax changes. In 2020, we recorded a tax benefit of approximately $1,712,000 related to the CARES Act, which was reflected in our effective tax rate reconciliation in ‘Other, net’. As of December 31, 2020, we have accumulated undistributed earnings generated by our foreign subsidiaries, most of which have been taxed in the U.S. as a result of TCJA 2017. For foreign subsidiary earnings not yet taxed under these provisions, we continue to assert permanent reinvestment of earnings earned in foreign jurisdictions which impose a withholding tax on dividends and, accordingly, have not accrued any additional income or withholding taxes on the potential repatriation of these earnings. At the present time, given the various complexities involved in repatriating earnings, it is not practicable to estimate the amount of tax that may be payable if these earnings were not reinvested indefinitely. The significant components of deferred tax assets and liabilities are as follows (in thousands): December 31, 2020 2019 Deferred tax assets: Net operating losses $ 27,453 $ 27,328 Foreign tax credits 16,027 16,091 Other 25,786 20,153 Gross deferred tax assets 69,266 63,572 Valuation allowances (40,098 ) (38,247 ) Total deferred tax assets 29,168 25,325 Deferred tax liabilities: Goodwill and other intangibles (48,831 ) (48,279 ) Property and equipment (6,715 ) (12,702 ) Other (2,540 ) (5,406 ) Total deferred tax liabilities (58,086 ) (66,387 ) Net deferred tax (liabilities) assets $ (28,918 ) $ (41,062 ) The net non-current deferred tax assets and liabilities are as follows (in thousands): December 31, 2020 2019 Net non-current deferred tax assets, which are included in "Other assets" $ 4,291 $ 3,571 Net non-current deferred tax liabilities (33,209 ) (44,633 ) Net deferred tax (liabilities) assets $ (28,918 ) $ (41,062 ) As of December 31, 2020, we have U.S. state net operating loss carryforward (“NOLs”) that will expire between 2021 and 2039. We also have foreign NOLs of $100,070,000, certain of which will expire between 2022 and 2027, while the majority have no expiration date. Certain state NOLs relate to pre-acquisition losses from acquired subsidiaries and are subject to annual limitations as to their use under the provisions of Internal Revenue Code Section 382. W e have provided valuation allowances for certain of our deferred tax assets where we believe it is more likely than not that the related tax benefits will not be realized. At December 31, 2020 and 2019, our valuation allowances totaled $40,098,000 and $38,247,000, respectively, relating primarily to state and foreign NOLs and foreign tax credits As of December 31, 2020 and 2019, we had approximately $10,546,000 and $9,736,000, respectively, of unrecognized tax benefits. Of these amounts, approximately $749,000 and $442,000, respectively, related to accrued interest In the future, if recognized, the liability associated with uncertain tax positions would affect our effective tax rate. We do not believe there will be any changes over the next 12 months that would have a material effect on our effective tax rate. We are currently under audit in various jurisdictions for tax years 2014 through 2018. Although the timing of the resolutions and/or closures of audits is highly uncertain, it is reasonably possible that the examination phase of these audits may be concluded within the next 12 months which could significantly increase or decrease the balance of our gross unrecognized tax benefits. In the U.S., federal income tax returns for years subsequent to 2015 remain open to examination. For state and foreign jurisdictions, the statute of limitations generally varies between three and ten years make adjustment to prior periods when amended returns have been filed, or when net operating losses or tax credits were generated and carried forward for subsequent utilization .

Market Risk Management

Market Risk Management	12 Months Ended
	Dec. 31, 2020
Text Block [Abstract]
Market Risk Management	( 1 2 ) Market Risk Management Interest Rate Risk We have interest rate exposure arising from our financing facilities, which have variable interest rates. These variable interest rates are affected by changes in short-term interest rates. We currently do not hedge our interest rate exposure. We do not believe that the effect of reasonably possible near-term changes in interest rates will be material to our financial position, results of operations and cash flows. Our financing facilities expose our net earnings to changes in short-term interest rates since interest rates on the underlying obligations are variable. We had $140,000,000 outstanding under our ABL facility and $296,419,000 outstanding under our senior convertible notes at December 31, 2020. The interest rate attributable to the borrowings under our ABL facility and our senior convertible notes was 1.40% Although our senior convertible notes are based on a fixed rate, changes in interest rates could impact the fair market value of such notes. As of December 31, 2020, the fair market value of our convertible senior notes was $454,790,000. Foreign Currency Exchange Risk We have foreign currency exchange risk related to the translation of our foreign subsidiaries’ operating results, assets and liabilities (see Note 1 for a description of our Foreign Currencies policy). We also maintain cash accounts denominated in currencies other than the functional currency, which expose us to fluctuations in foreign exchange rates. Remeasurement of these cash balances results in gains/losses that are also reported in other expense (income), net within non-operating (income) expense. We monitor our foreign currency exposure and selectively enter into forward exchange contracts to mitigate risk associated with certain non-functional currency monetary assets and liabilities related to foreign denominated payables, receivables and cash balances. Transaction gains and losses resulting from non-functional currency assets and liabilities are offset by gains and losses on forward contracts in non-operating (income) expense, net in our consolidated statements of operations

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	( 1 3 ) Fair Value Measurements Fair value measurements are determined based on the following three categories: Level 1: Quoted market prices in active markets for identical assets or liabilities. Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data. Level 3: Unobservable inputs that are not corroborated by market data. As of December 31, 2020, we have no non-financial assets or liabilities that are measured and recorded at fair value on a recurring basis, and our other financial assets or liabilities generally consist of cash and cash equivalents, accounts receivable, accounts payable, accrued expenses and other current liabilities and long-term debt. The estimated fair values of our cash and cash equivalents approximate their carrying values and are determined based on quoted prices in active markets for identical assets. The estimated fair values of our long-term debt balances approximate their carrying values based on their variable interest rate terms that are based on current market interest rates for similar debt instruments. The fair values of the other financial assets and liabilities are based on the values that would be received or paid in an orderly transaction between market participants and approximate their carrying values due to their nature and short duration.

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract]
Benefit Plans	( 1 4 ) Benefit Plans We adopted a defined contribution benefit plan (the “Defined Contribution Plan”) for our U.S. teammates which complies with section 401(k) of the Internal Revenue Code. The Company provides a discretionary match to all participants who make 401(k) contributions pursuant to the Defined Contribution Plan. On May 15, 2020, our matching contributions were temporarily suspended due to the global health crises. Company matching contributions are expected to return in 2021. The discretionary match provided to participants is equivalent to 50% of a participant’s pre-tax contributions up to a maximum of 6% of eligible compensation per pay period. Additionally, we offer several defined contribution benefit plans to our teammates outside of the United States. These plans and their related terms vary by country. Total consolidated contribution expense under these plans was $11,974,000, $19,126,000 and $15,216,000 for 2020, 2019 and 2018, respectively.

Share Repurchase Programs

Share Repurchase Programs	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Share Repurchase Programs	( 1 5 ) Share Repurchase Programs In each of February 2020 and February 2018, our Board of Directors authorized the repurchase of up to $50,000,000 of our common stock. As of December 31, 2020, $25 million remained available under the February 2020 share repurchase plan and none remained available under the February 2018 share repurchase plan. Our share repurchases may be made on the open market, subject to Rule 10b-18 or in privately negotiated transactions, through block trades, through 10b5-1 plans or otherwise, at management’s discretion. No share repurchase program was authorized in 2019 The following table summarizes the shares of our common stock that we repurchased on the open market under these repurchase programs during the years ended December 31, 2020, 2019 and 2018, respectively, in thousands, except per share amounts: Year Total Number of Shares Purchased Average Price Paid per Share Approximate Dollar Value of Shares Purchased 2020 445 $ 56.20 $ 25,000 2019 541 51.56 27,899 2018 641 34.42 22,069 Total 1,627 $ 74,968 All shares repurchased were retired.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	( 1 6 ) Commitments and Contingencies Contractual In the ordinary course of business, we issue performance bonds to secure our performance under certain contracts or state tax requirements. These bonds are issued on our behalf by a surety company on an unsecured basis; however, if the surety company is ever required to pay out under the bonds, we have contractually agreed to reimburse the surety company. Management believes that payments, if any, related to these performance bonds are not probable at December 31, 2020. Accordingly, we have not accrued any liabilities related to such performance bonds in our consolidated financial statements. Employment Contracts and Severance Plans We have employment contracts with, and plans covering, certain officers and management teammates under which severance payments would become payable in the event of specified terminations without cause or terminations under certain circumstances after a change in control. In addition, vesting of outstanding nonvested RSUs would accelerate following a change in control. If severance payments under the current employment agreements or plan payments were to become payable, the severance payments would generally range from three to twenty-four months of salary. Indemnifications From time to time, in the ordinary course of business, we enter into contractual arrangements under which we agree to indemnify either our clients or third-party service providers from certain losses incurred relating to services performed on our behalf or for losses arising from defined events, which may include litigation or claims relating to past performance. These arrangements include, but are not limited to, the indemnification of our clients for certain claims arising out of our performance under our sales contracts , the indemnification of our landlords for certain claims arising from our use of leased facilities and the indemnification of the lenders that provide our credit facilities for certain claims arising from their extension of credit to us. Such indemnification obligations may not be subject to maximum loss clauses. Management believes that payments, if any, related to these indemnifications are not probable at December 31, 2020. Accordingly, we have not accrued any liabilities related to such indemnifications in the accompanying consolidated financial statements. We have entered into separate indemnification agreements with certain of our executive officers and with each of our directors. These agreements require us, among other requirements, to indemnify such officers and directors against expenses (including attorneys’ fees), judgments and settlements incurred by such individual in connection with any action arising out of such individual’s status or service as our executive officer or director (subject to exceptions such as where the individual failed to act in good faith or in a manner the individual reasonably believed to be in, or not opposed to, the best interests of the Company) and to advance expenses incurred by such individual with respect to which such individual may be entitled to indemnification by us. There are no pending legal proceedings that involve the indemnification of any of the Company’s directors or officers. Contingencies Related to Third-Party Review From time to time, we are subject to potential claims and assessments from third parties. We are also subject to various governmental, client and partner audits. We continually assess whether or not such claims have merit and warrant accrual. Where appropriate, we accrue estimates of anticipated liabilities in our consolidated financial statements. Such estimates are subject to change and may affect our results of operations and our cash flows. Legal Proceedings From time to time, we are party to various legal proceedings incidental to the business, including preference payment claims asserted in client bankruptcy proceedings, indemnification claims, claims of alleged infringement of patents, trademarks, copyrights and other intellectual property rights, employment claims, claims of alleged non-compliance with contract provisions and claims related to alleged violations of laws and regulations. We regularly evaluate the status of the legal proceedings in which we are involved to assess whether a loss is probable or there is a reasonable possibility that a loss, or an additional loss, may have been incurred and determine if accruals are appropriate. If accruals are not appropriate, we further evaluate each legal proceeding to assess whether an estimate of possible loss or range of possible loss can be made. Although litigation is inherently unpredictable, we believe that we have adequate provisions for any probable and estimable losses. It is possible, nevertheless, that our consolidated financial position, results of operations or liquidity could be materially and adversely affected in any particular period by the work required pursuant to any legal proceedings or the resolution of any legal proceedings during such period. Legal expenses related to defense of any legal proceeding or the negotiations, settlements, rulings and advice of outside legal counsel in connection with any legal proceedings are expensed as incurred. In connection with the acquisition of PCM, the Company has effectively assumed responsibility for PCM litigation matters, including various disputes related to PCM’s acquisition of certain assets of En Pointe Technologies in 2015. The seller of En Pointe Technologies and related entities providing various post-closing support functions to PCM have asserted claims regarding the sufficiency of earnout payments paid by PCM under the asset purchase agreement and the unwinding of the support functions post-closing. PCM has rejected and vigorously responded to those claims and is pursuing various counterclaims. The disputes are being heard by multiple courts and arbitrators in several different jurisdictions including California, Delaware and Pakistan. The Company cannot determine with certainty the costs or outcome of these matters. However, the Company is not involved in any pending or threatened legal proceedings, including the PCM litigation matters, that it believes would reasonably be expected to have a material adverse effect on its business, financial condition or results of operations.

Supplemental Financial Informat

Supplemental Financial Information	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Supplemental Financial Information	( 1 7 ) Supplemental Financial Information Additions and deductions related to the allowance for doubtful accounts receivable for 2020, 2019 and 2018 were as follows (in thousands): Balance at Beginning of Year Additions Deductions Balance at End of Year Allowance for doubtful accounts receivable: Year ended December 31, 2020 $ 10,762 $ 10,163 $ (5,819 ) $ 15,106 Year ended December 31, 2019 $ 10,462 $ 5,079 $ (4,779 ) $ 10,762 Year ended December 31, 2018 $ 10,158 $ 4,776 $ (4,472 ) $ 10,462

Cash Flows

Cash Flows	12 Months Ended
	Dec. 31, 2020
Supplemental Cash Flow Elements [Abstract]
Cash Flows	( 1 8 ) Cash Flows Cash payments for interest on indebtedness and cash payments for taxes on income were as follows (in thousands): Years Ended December 31, 2020 2019 2018 Supplemental disclosures of cash flow information: Cash paid during the year for interest $ 16,605 $ 6,246 $ 10,155 Cash paid during the year for income taxes, net of refunds $ 62,545 $ 42,484 $ 31,218

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Segment and Geographic Information	( 1 9 ) Segment and Geographic Information We operate in three reportable geographic operating segments: North America; EMEA; and APAC. Our offerings in North America and certain countries in EMEA and APAC include IT hardware, software and services. Our offerings in the remainder of our EMEA and APAC segments are largely software and certain software-related services. The following tables summarize net sales by offering for North America, EMEA and APAC by sales mix amounts (in thousands): North America Years Ended December 31, Sales Mix 2020 2019 2018 Hardware $ 4,418,295 $ 3,957,507 $ 3,610,356 Software 1,260,757 1,269,983 1,112,715 Services 935,980 796,815 639,910 $ 6,615,032 $ 6,024,305 $ 5,362,981 EMEA Years Ended December 31, Sales Mix 2020 2019 2018 Hardware $ 617,825 $ 622,949 $ 653,499 Software 760,562 753,729 736,509 Services 176,838 149,966 140,233 $ 1,555,225 $ 1,526,644 $ 1,530,241 APAC Years Ended December 31, Sales Mix 2020 2019 2018 Hardware $ 31,953 $ 34,965 $ 29,496 Software 82,763 92,988 107,363 Services 55,606 52,288 50,055 $ 170,322 $ 180,241 $ 186,914 The method for determining what information regarding operating segments, products and services, geographic areas of operation and major clients to report is based upon the “management approach,” or the way that management organizes the operating segments within a company, for which separate financial information is evaluated regularly by the Chief Operating Decision Maker (“CODM”) in deciding how to allocate resources. Our CODM is our Chief Executive Officer. All significant intercompany transactions are eliminated upon consolidation, and there are no differences between the accounting policies used to measure profit and loss for our segments or on a consolidated basis. Net sales are defined as net sales to external clients. None of our clients exceeded ten percent of consolidated net sales in 2020, 2019 or 2018. A portion of our operating segments’ selling and administrative expenses arise from shared services and infrastructure that we have historically provided to them in order to realize economies of scale and to use resources efficiently. These expenses, collectively identified as corporate charges, include senior management expenses, internal audit, legal, tax, insurance services, treasury and other corporate infrastructure expenses. Charges are allocated to our operating segments, and the allocations have been determined on a basis that we considered to be a reasonable reflection of the utilization of services provided to or benefits received by the operating segments. The tables below present information about our reportable operating segments (in thousands): Year Ended December 31, 2020 North America EMEA APAC Consolidated Net Sales: Products $ 5,679,052 $ 1,378,387 $ 114,716 $ 7,172,155 Services 935,980 176,838 55,606 1,168,424 Total net sales 6,615,032 1,555,225 170,322 8,340,579 Costs of goods sold: Products 5,130,851 1,261,236 104,914 6,497,001 Services 462,793 57,943 22,900 543,636 Total costs of goods sold 5,593,644 1,319,179 127,814 7,040,637 Gross profit 1,021,388 236,046 42,508 1,299,942 Operating expenses: Selling and administrative expenses 790,913 192,485 30,367 1,013,765 Severance and restructuring expenses 9,273 2,989 132 12,394 Acquisition-related expenses 2,004 204 — 2,208 Earnings from operations $ 219,198 $ 40,368 $ 12,009 $ 271,575 Year Ended December 31, 2019 North America EMEA APAC Consolidated Net Sales: Products $ 5,227,490 $ 1,376,678 $ 127,953 $ 6,732,121 Services 796,815 149,966 52,288 999,069 Total net sales 6,024,305 1,526,644 180,241 7,731,190 Costs of goods sold: Products 4,748,608 1,258,974 117,778 6,125,360 Services 404,583 40,587 22,562 467,732 Total costs of goods sold 5,153,191 1,299,561 140,340 6,593,092 Gross profit 871,114 227,083 39,901 1,138,098 Operating expenses: Selling and administrative expenses 664,374 186,957 29,406 880,737 Severance and restructuring expenses 4,946 334 145 5,425 Acquisition-related expenses 11,342 — — 11,342 Earnings from operations $ 190,452 $ 39,792 $ 10,350 $ 240,594 Year Ended December 31, 2018 North America EMEA APAC Consolidated Net Sales: Products $ 4,723,071 $ 1,390,008 $ 136,859 $ 6,249,938 Services 639,910 140,233 50,055 830,198 Total net sales 5,362,981 1,530,241 186,914 7,080,136 Costs of goods sold: Products 4,313,070 1,273,422 124,908 5,711,400 Services 317,216 35,352 22,450 375,018 Total costs of goods sold 4,630,286 1,308,774 147,358 6,086,418 Gross profit 732,695 221,467 39,556 993,718 Operating expenses: Selling and administrative expenses 545,091 182,470 28,968 756,529 Severance and restructuring expenses 1,617 1,677 130 3,424 Acquisition-related expenses 282 — — 282 Earnings from operations $ 185,705 $ 37,320 $ 10,458 $ 233,483 The following table is a summary of our total assets by reportable operating segment (in thousands): December 31, 2020 December 31, 2019 North America $ 4,837,155 $ 3,814,408 EMEA 735,771 699,856 APAC 155,761 123,349 Corporate assets and intercompany eliminations, net (1,417,955 ) (459,434 ) Total assets $ 4,310,732 $ 4,178,179 The following is a summary of our geographic net sales and long-lived assets, consisting of property and equipment, net (in thousands): United States United Kingdom Other Foreign Total 2020 Net sales $ 6,237,901 $ 805,401 $ 1,297,277 $ 8,340,579 Total long-lived assets $ 110,161 $ 11,042 $ 24,813 $ 146,016 2019 Net sales $ 5,696,422 $ 776,051 $ 1,258,717 $ 7,731,190 Total long-lived assets $ 103,678 $ 13,448 $ 13,781 $ 130,907 2018 Net sales $ 5,100,456 $ 843,145 $ 1,136,535 $ 7,080,136 Net sales by geographic area are presented by attributing net sales to external customers based on the domicile of the selling location. We recorded the following pre-tax amounts, by operating segment, for depreciation and amortization in the accompanying consolidated financial statements (in thousands): Years Ended December 31, 2020 2019 2018 Depreciation and amortization of property and equipment: North America $ 22,396 $ 17,827 $ 17,164 EMEA 5,073 4,166 4,058 APAC 556 545 499 28,025 22,538 21,721 Amortization of intangible assets: North America 34,990 22,382 14,791 EMEA 2,088 828 285 APAC 457 461 661 37,535 23,671 15,737 Total $ 65,560 $ 46,209 $ 37,458

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2020
Business Combinations [Abstract]
Acquisitions	( 20 ) Acquisitions PCM On August 30, 2019, we completed our acquisition of PCM, acquiring 100 percent of the issued and outstanding shares of PCM for a cash purchase price of $745,562,000, which included cash and cash equivalents acquired of $84,637,000 and the payment of PCM’s outstanding debt. PCM is a provider of multi-vendor technology offerings, including hardware, software and services to small, mid-sized and corporate/enterprise commercial clients, state, local and federal governments and educational institutions across the United States, Canada and the United Kingdom. Based in El Segundo, California, PCM has 40 office locations in North America and the United Kingdom and more than 4,000 teammates. We believe that this acquisition allows us to help existing PCM clients in positioning their businesses for future growth, transforming and securing their data platforms, creating modern and mobile experiences for their workforce and optimizing the procurement of technology. The addition of PCM complements our supply chain optimization solution offering, adding scale and clients in the mid-market and corporate space primarily in North America. The following table summarizes the purchase price and the estimated fair value of the assets acquired and liabilities assumed at the date of acquisition (in thousands): Purchase price net of cash and cash equivalents acquired $ 660,925 Fair value of net assets acquired: Current assets $ 531,941 Identifiable intangible assets - see description below 191,370 Property and equipment 91,213 Other assets 32,699 Current liabilities (369,183 ) Long-term liabilities, including deferred taxes (71,009 ) Total fair value of net assets acquired 407,031 Excess purchase price over fair value of net assets acquired ("goodwill") $ 253,894 Under the acquisition method of accounting, the total purchase price as shown in the table above was allocated to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values. The excess of the purchase price over fair value of net assets acquired was recorded as goodwill. In the fourth quarter of 2019, an adjustment of $56,700,000 was recorded to goodwill primarily due to a change in the customer relationships valuation based on updated information received for key inputs as well as an associated change in deferred taxes. The estimated fair values of current assets and liabilities are based upon their historical costs on the date of acquisition due to their short-term nature. The estimated fair values of the majority of property and equipment excluding acquired real estate are also based upon historical costs as they approximate fair value. Certain long-term assets, including PCM’s IT systems, have been written down to the estimated fair value. The estimated fair value of net assets acquired was approximately $407,031,000, including $191,370,000 of identifiable intangible assets, consisting primarily of customer relationships of $178,900,000. The fair value of the customer relationships were determined using the multiple-period excess earnings method. The identifiable intangibles resulting from the acquisition are amortized using the straight-line method over the following estimated useful lives: Intangible Assets Estimated Economic Life Customer relationships 10 - 12 Years Trade name 1 Year Non-compete agreements 2 - 3 Years Goodwill of $253,894,000, which was recorded in our North America and EMEA operating segments, represents the excess of the purchase price over the estimated fair value assigned to tangible and identifiable intangible assets acquired and liabilities assumed from PCM. The goodwill is not amortized and will be tested for impairment annually in the fourth quarter of our fiscal year. The addition of the PCM technical employees to our team and the opportunity to grow our business are the primary factors making up the goodwill recognized as part of the transaction. None of the goodwill is tax deductible. The purchase price allocation was finalized during the third quarter of 2020. We have consolidated the results of operations for PCM since its acquisition on August 30, 2019. The following table reports pro forma information as if the acquisition of PCM had been completed at the beginning of the earliest period presented (in thousands, except per share amounts): Year Ended December 31, 2019 2018 Net sales As reported $ 7,731,190 $ 7,080,136 Pro forma $ 9,207,512 $ 9,241,183 Net earnings As reported $ 159,407 $ 163,677 Pro forma $ 171,102 $ 167,499 Diluted earnings per share As reported $ 4.43 $ 4.55 Pro forma $ 4.76 $ 4.65 Cardinal Effective August 1, 2018, we acquired 100 percent of the issued and outstanding shares of Cardinal, a digital solutions provider based in Cincinnati, Ohio, with offices across the Midwest and Southeast United States, for a cash purchase price, net of cash acquired, of approximately $78,400,000, including final working capital and tax gross up adjustments of $3,400,000. Cardinal provides technology solutions to digitally transform organizations through their expertise in mobile applications development, Internet of Things and cloud enabled business intelligence. We believe that this acquisition strengthens our services capabilities and will bring value to our clients within our digital innovation services solution offering. The fair value of net assets acquired was approximately $42,360,000, including $27,540,000 of identifiable intangible assets, consisting primarily of customer relationships that will be amortized using the straight line method over the estimated economic life of ten years. The fair value of the customer relationships was determined using the multiple-period excess earnings method. The preliminary purchase price was allocated using the acquisition method of accounting using the information available at the time. During the fourth quarter of 2018, we finalized the fair value assumptions for identifiable intangible assets with no changes being made to amounts previously recorded. Goodwill acquired approximated $36,040,000 which was recorded in our North America operating segment. The goodwill is tax deductible. The working capital adjustment was finalized in the fourth quarter of 2018 and paid in January 2019. Additionally, we finalized the purchase price allocation when the tax gross up adjustment was agreed upon in April 2019. This resulted in a reduction of the previously recorded purchase price in the second quarter of 2019. We consolidated the results of operations for Cardinal within our North America operating segment beginning on August 1, 2018, the effective date of the acquisition. Our historical results would not have been materially affected by the acquisition of Cardinal and, accordingly, we have not presented pro forma information as if the acquisition had been completed at the beginning of each period presented in our statement of operations.

Selected Quarterly Financial In

Selected Quarterly Financial Information	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Information	( 2 1 ) Selected Quarterly Financial Information (unaudited) The following tables set forth selected unaudited consolidated quarterly financial information for 2020 and 2019 (in thousands, except per share data): Quarters Ended December 31, 2020 September 30, 2020 June 30, 2020 March 31, 2020 Net sales $ 2,291,315 $ 1,936,478 $ 1,968,735 $ 2,144,051 Costs of goods sold 1,948,661 1,628,915 1,644,346 1,818,715 Gross profit 342,654 307,563 324,389 325,336 Operating expenses: Selling and administrative expenses 257,167 245,155 242,580 268,863 Severance and restructuring expenses 2,432 808 7,010 2,144 Acquisition-related expenses 13 118 611 1,466 Earnings from operations 83,042 61,482 74,188 52,863 Non-operating (income) expense: Interest expense, net 10,434 9,115 10,219 11,826 Other (income) expense, net 693 1,301 1,098 (1,563 ) Earnings before income taxes 71,915 51,066 62,871 42,600 Income tax expense 18,527 12,160 16,486 8,639 Net earnings $ 53,388 $ 38,906 $ 46,385 $ 33,961 Net earnings per share: Basic $ 1.52 $ 1.11 $ 1.32 $ 0.96 Diluted $ 1.50 $ 1.10 $ 1.32 $ 0.95 Shares used in per share calculations: Basic 35,098 35,077 35,060 35,233 Diluted 35,523 35,348 35,260 35,646 Quarters Ended December 31, 2019 September 30, 2019 June 30, 2019 March 31, 2019 Net sales $ 2,297,156 $ 1,912,547 $ 1,836,021 $ 1,685,466 Costs of goods sold 1,959,174 1,636,352 1,560,572 1,436,994 Gross profit 337,982 276,195 275,449 248,472 Operating expenses: Selling and administrative expenses 266,970 223,215 199,489 191,063 Severance and restructuring expenses 1,713 2,662 680 370 Acquisition-related expenses 2,283 5,896 3,163 — Earnings from operations 67,016 44,422 72,117 57,039 Non-operating (income) expense: Interest expense, net 11,897 7,694 4,335 4,552 Other (income) expense, net (458 ) (538 ) 346 1,050 Earnings before income taxes 55,577 37,266 67,436 51,437 Income tax expense 12,627 10,134 17,438 12,110 Net earnings $ 42,950 $ 27,132 $ 49,998 $ 39,327 Net earnings per share: Basic $ 1.22 $ 0.76 $ 1.40 $ 1.10 Diluted $ 1.20 $ 0.76 $ 1.38 $ 1.09 Shares used in per share calculations: Basic 35,259 35,512 35,772 35,609 Diluted 35,755 35,868 36,111 36,103

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	(22) Subsequent Events In January 2021, we completed the sales of our three properties in Tempe, Arizona and of our property in Woodbridge, Illinois for total net proceeds of approximately $27,211,000. We intend to use the proceeds from the sales to ready our property in Chandler, Arizona to be used as our global corporate headquarters.

Operations and Summary of Sig_2

Operations and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Description of Business	Description of Business We empower organizations of all sizes with Intelligent Technology Solutions TM Operating Segment Geography North America United States ("U.S.") and Canada EMEA Europe, Middle East and Africa APAC Asia-Pacific Our offerings in North America and certain countries in EMEA and APAC include hardware, software and services. Our offerings in the remainder of our EMEA and APAC segments are largely software and certain software-related services.
Acquisitions	Acquisitions Effective February 28, 2020, we acquired vNext SAS (“vNext”), a French digital consulting services and managed services provider. The acquisition was funded using cash on hand. Effective August 30, 2019, we acquired PCM, Inc. (“PCM”), a provider of multi-vendor technology offerings, including hardware, software and services, for a purchase price of approximately $745,562,000, including cash and cash equivalents of $84,637,000 and the payment of PCM’s outstanding debt. The acquisition was funded through a combination of using cash on hand and borrowings under our senior secured revolving credit facility (the “ABL facility”). Effective August 1, 2018, we acquired Cardinal Solutions Group, Inc. (“Cardinal”), a digital solutions provider, for a purchase price, net of cash acquired, of approximately $78,400,000, including the final working capital adjustment and tax gross up adjustments. The acquisition was funded using cash on hand. Our results of operations include the results of vNext, PCM and Cardinal from their respective acquisition dates. (See Note 20 for a discussion of our acquisitions).
Principles of Consolidation and Presentation	Principles of Consolidation and Presentation The consolidated financial statements include the accounts of Insight Enterprises, Inc. and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. Included in our accounts receivable, net balance at December 31, 2020 and 2019 is $8,398,000 and $15,078,000, respectively, of accounts receivable from an unconsolidated affiliate. References to “the Company,” “Insight,” “we,” “us,” “our” and other similar words refer to Insight Enterprises, Inc. and its consolidated subsidiaries, unless the context suggests otherwise.
Acquisition Accounting	Acquisition Accounting The Company accounts for all business combinations using the acquisition method of accounting, which allocates the fair value of the purchase consideration to the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values. The excess of the purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. When determining the fair values of assets acquired and liabilities assumed, management makes estimates and assumptions. Initial purchase price allocations are subject to revision within the measurement period, not to exceed one year from the date of acquisition. Acquisition-related expenses and transaction costs associated with business combinations are expensed as incurred.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements. Additionally, these estimates and assumptions affect the reported amounts of net sales and expenses during the reporting period. Actual results could differ from those estimates. On an ongoing basis, we evaluate our estimates, including those related to sales recognition, anticipated achievement levels under partner funding programs, assumptions related to stock-based compensation valuation, allowances for doubtful accounts, valuation of inventories, litigation-related obligations, valuation allowances for deferred tax assets and impairment of long-lived assets, including purchased intangibles and goodwill, if indicators of potential impairment exist.
Cash, Cash Equivalents and Restricted Cash	Cash, Cash Equivalents and Restricted Cash We consider all highly liquid investments with maturities at the date of purchase of three months or less to be cash equivalents. Book overdrafts represent the amount by which outstanding checks issued, but not yet presented to our banks for disbursement, exceed balances on deposit in applicable bank accounts and a legal right of offset with our positive cash balances in other financial institution accounts does not exist. Our book overdrafts, which are not directly linked to a credit facility or other bank overdraft arrangement, do not result in an actual bank financing, but rather constitute normal unpaid trade payables at the end of a reporting period. These amounts are included within our accounts payable balance in our consolidated balance sheets. The changes in these book overdrafts are included within the changes in accounts payable line item as a component of cash flows from operating activities in our consolidated statements of cash flows. Restricted cash generally includes any cash that is restricted as to withdrawal or usage. These amounts are included with cash and cash equivalents on the consolidated statement of cash flows. All cash receipts/payments with third parties directly to/from restricted cash accounts are reported as an operating, investing or financing cash flow, based on the nature of the transaction.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts We establish an allowance for doubtful accounts to reflect our best estimate of probable losses inherent in our accounts receivable balance. The allowance is based on our evaluation of the aging of the receivables, historical write-offs and the current economic environment. We write off individual accounts against the reserve when we no longer believe that it is probable that we will collect the receivable because we become aware of a client’s or partner’s inability to meet its financial obligations. Such awareness may be as a result of bankruptcy filings, or deterioration in the client’s or partner’s operating results or financial position.
Inventories	Inventories We state inventories, principally purchased IT hardware, at the lower of weighted average cost (which approximates cost under the first-in, first-out method) or net realizable value. We evaluate inventories for excess, obsolescence or other factors that may render inventories unmarketable at normal margins. Write-downs are recorded so that inventories reflect the approximate net realizable value and take into account contractual provisions with our partners governing price protection, stock rotation and return privileges relating to obsolescence. Because of the large number of transactions and the complexity of managing the price protection and stock rotation process, estimates are made regarding write-downs of the carrying amount of inventories. Additionally, assumptions about future demand, market conditions and decisions by manufacturers/publishers to discontinue certain products or product lines can affect our decision to write down inventories.
Property and Equipment	Property and Equipment We record property and equipment at cost. We capitalize major improvements and betterments, while maintenance, repairs and minor replacements are expensed as incurred. Depreciation or amortization is provided using the straight-line method over the following estimated economic lives of the assets: Estimated Economic Life Leasehold improvements Shorter of underlying lease term or asset life Furniture and fixtures 2 – 7 years Equipment 3 – 5 years Software 3 – 10 years Buildings 29 years External direct costs of materials and services consumed in developing or obtaining internal-use computer software and payroll and payroll-related costs for teammates who are directly associated with and who devote time to internal-use computer software development projects, to the extent of the time spent directly on the project and specific to application development, are capitalized. Reviews are regularly performed to determine whether facts and circumstances exist which indicate that the economic life is shorter than originally estimated or the carrying amount of assets may not be recoverable. When an indication exists that the carrying amount of long-lived assets may not be recoverable, we assess the recoverability of our assets by comparing the projected undiscounted net cash flows associated with the related asset or group of assets over their remaining lives against their respective carrying amounts. Such impairment test is based on the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets and liabilities. Impairment, if any, is based on the excess of the carrying amount over the estimated fair value of those assets.
Goodwill	Goodwill Goodwill is recorded when the purchase price paid for an acquisition exceeds the estimated fair value of net identified tangible and intangible assets acquired. Goodwill is tested for impairment at the reporting unit level on an annual basis in the fourth quarter and between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying value. The Company has three reporting units, which are the same as our operating segments. Multiple valuation techniques would likely be used to assess the fair value of the reporting unit. These techniques include the use of estimates and assumptions that are inherently uncertain. Changes in these estimates and assumptions could materially affect the determination of fair value or goodwill impairment, or both.
Intangible Assets	Intangible Assets We amortize finite lived intangible assets acquired in business combinations using the straight-line method over the estimated economic lives of the intangible assets from the date of acquisition. We regularly perform reviews to determine if facts and circumstances exist which indicate that the economic lives of our intangible assets are shorter than originally estimated or the carrying amount of these assets may not be recoverable. When an indication exists that the carrying amount of intangible assets may not be recoverable, we assess the recoverability of our assets by comparing the projected undiscounted net cash flows associated with the related asset or group of assets over their remaining lives against their respective carrying amounts. Such impairment test is based on the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets and liabilities. Impairment, if any, is based on the excess of the carrying amount over the estimated fair value of those assets.
Leases	Leases We adopted ASU No. 2016-02, “Leases” (Topic 842) with a date of initial application of January 1, 2019. As a result, we updated our accounting policy for leases. We determine if a contract or arrangement is, or contains, a lease at inception. Balances related to operating leases are included in other assets, other current liabilities, and other liabilities in our consolidated balance sheet. Balances related to financing leases are included in property and equipment, current portion of long-term debt, and long-term debt in our consolidated balance sheet. Right of use (“ROU”) assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities of $65,922,000 and $70,512,000, respectively, were recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. We use the implicit rate when readily determinable. The operating lease ROU asset includes any prepaid lease payments and additional direct costs and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option.
Self Insurance	Self-Insurance We are self-insured in the U.S. for medical insurance up to certain annual stop-loss limits and workers’ compensation claims up to certain deductible limits. We establish reserves for claims, both reported and incurred but not reported, using currently available information as well as our historical claims experience.
Treasury Stock	Treasury Stock We record repurchases of our common stock as treasury stock at cost. We also record the subsequent retirement of these treasury shares at cost. The excess of the cost of the shares retired over their par value is allocated between additional paid-in capital and retained earnings. The amount recorded as a reduction of paid-in capital is based on the excess of the average original issue price of the shares over par value. The remaining amount is recorded as a reduction of retained earnings.
Sales Recognition	Sales Recognition Revenue is measured based on the consideration specified in a contract with a client, and excludes any sales incentives and amounts collected on behalf of third parties. The Company recognizes revenue when it satisfies a performance obligation by transferring control of a product or service or by arranging for the sales of a vendor’s products or service to a client. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by the Company from a client, are excluded from revenue. We record the freight we bill to our clients as product net sales and the related freight costs we pay as product costs of goods sold. Nature of Goods and Services We sell hardware and software products on both a stand-alone basis without any services and as solutions bundled with services. When we provide a combination of hardware and software products with the provision of services, we separately identify our performance obligations under our contract with the client as the distinct goods (hardware and/or software products) or services that will be provided. The total transaction price for an arrangement with multiple performance obligations is allocated at contract inception to each distinct performance obligation in proportion to its stand-alone selling price. The stand-alone selling price is the price at which we would sell a promised good or service separately to a client. We estimate the price based on observable inputs, including direct labor hours and allocable costs, or use observable stand-alone prices when they are available. Product Offerings Hardware We recognize hardware product revenue on a gross basis at the point in time when a client takes control of the hardware, which typically occurs when title and risk of loss have passed to the client at its destination. Our selling terms and conditions specify Free On Board (“F.O.B.”) destination contractual terms such that control is transferred from the Company at the point in time when the product is received by the client. The transaction price for hardware sales is adjusted for estimated product returns that we expect to occur under our return policy based upon historical return rates. We leverage drop-shipment arrangements with many of our partners and suppliers to deliver products to our clients without having to physically hold the inventory at our warehouses, thereby increasing efficiency and reducing costs. We recognize revenue for drop-shipment arrangements on a gross basis as the principal in the transaction when the product is received by the client because we control the product prior to transfer to the client. In addition to other factors considered, we assume primary responsibility for fulfillment in the arrangement, we assume inventory risk if the product is returned by the client, we set the price of the product charged to the client and we work closely with our clients to determine their hardware specifications. Bill and Hold Transactions We offer a service to our customers whereby clients may purchase product that we procure on their behalf and, at our clients’ direction, store the product in our warehouse for a designated period of time, with the intention of deploying the product to the clients’ designated locations at a later date. These warehousing services are designed to help our clients with inventory management challenges associated with technology roll-outs, product that is moving to end of life, or clients needing integrated stock available for immediate deployment. The client is invoiced and title transfers to the client upon receipt of the product at our warehouse. These product contracts are non-cancelable with customary credit terms beginning the date the product is received in our warehouse and the warranty periods begin on the date of invoice. Revenue is recognized for the sale of the product to the client upon receipt of the product at our warehouse. Software We recognize revenue from software sales on a gross basis at the point in time when the client acquires the right to use or copy software under license and control transfers to the client. For renewals, revenue is recognized upon the commencement of the software license agreement or when the renewal term begins, as applicable. A substantial portion of the software licenses we sell are perpetual software licenses and do not require renewal or extension after their initial purchase by the client. Such perpetual licenses are periodically subject to true-up, whereby additional perpetual licenses are sold under the client’s pre-existing master agreement. Such true-ups are generally sold in arrears, and clients are invoiced for the additional licenses they had already been utilizing. Since the client already possessed copies of the licensed software prior to the true-up, software revenue related to the underlying additional licenses is recognized when we agree to the true-up with our client and the partner. For sales transactions for certain security software products that are sold with integral third-party delivered software maintenance, we record the software license on a net basis, as the agent in the arrangement. Services Offerings Software Maintenance Software maintenance agreements provide our clients with the right to obtain any software upgrades, bug fixes and help desk and other support services directly from the software publisher at no additional charge during the term of the software maintenance agreements. We act as the software publisher’s agent in selling these software maintenance agreements and do not assume any performance obligation to the client under the agreements. As a result, we are the agent in these transactions and these sales are recorded on a net sales recognition basis. Under net sales recognition, the cost of the software maintenance agreement is recorded as a reduction to sales, resulting in net sales equal to the gross profit on the transaction, and there are no costs of goods sold. Because we are acting as the software publisher’s agent, revenue is recognized when the parties agree to the initial purchase, renewal or extension as our agency services are then complete. W e report all fees earned from activities reported net within our services net sales category in our consolidated statements of operations. Vendor Direct Support Services Contracts Clients may purchase a vendor direct support services contract through us. Under these contracts, our clients call the manufacturer/publisher or its designated service organization directly for both the initial technical triage and any follow-up assistance. We act as the manufacturer/publisher’s agent in selling these support service contracts and do not assume any performance obligation to the client under the arrangements. As a result, these sales are recorded on a net sales recognition basis similar to software maintenance agreements, as discussed above. Because we are acting as the agent, revenue is recognized when the parties agree to the purchase of the support services contract as our agency services are then complete. Cloud / Software-as-a-Service Offerings Cloud or software-as-a-service (“SaaS”) subscription products provide our clients with access to software products hosted in the public cloud without the client taking possession of the software. We act as the agent in selling these software-as-a service subscription products. We do not take control of the software products or assume any performance obligations to the clients related to the provisioning of the offerings in the cloud. As a result, these sales are recorded on a net sales recognition basis. We report all fees earned from activities recognized net within our services net sales category in our consolidated statements of operations. Because we are acting as the agent in the transaction, revenue is recognized when the parties agree to the purchase of the cloud or SaaS offerings as our agency services are then complete. Often, these agency fees are based on end-client usage and therefore are variable throughout the term of the service contract. Where this variable consideration is uncertain, we recognize our agency revenue to the extent that a significant reversal will not occur. Insight Delivered Services We design, procure, deploy, implement and manage solutions that combine hardware, software and services to help businesses run smarter. Such services are provided by us or third-party sub-contract vendors as part of bundled arrangements, or are provided separately on a stand-alone basis as technical, consulting or managed services engagements. If the services are provided as part of a bundled arrangement with hardware and software, the hardware, software and services are generally distinct performance obligations. In general, we recognize revenue from services engagements as we perform the underlying services and satisfy our performance obligations. We recognize revenue from sales of services by measuring progress toward complete satisfaction of the related service performance obligation. Billings for such services that are made in advance of the related revenue recognized are recorded as a contract liability. Specific revenue recognition practices for certain of our services offerings are described in further detail below. Time and Materials Services Contracts We recognize revenue for professional services engagements that are on a time and materials basis based upon hours incurred for the performance completed to date for which we have the right to consideration, even if such amounts have not yet been invoiced as of period end. Fixed Fee Services Contracts We recognize revenue on fixed fee professional services contracts using a proportional performance method of revenue recognition based on the ratio of direct labor and other allocated costs incurred to total estimated direct labor and other allocated costs. OneCall Support Services Contracts When we sell certain hardware and/or software products to our clients, we also enter into service contracts with them. These contracts are support service agreements for the hardware and/or software products that were purchased from us. Under certain support services contracts, although we purchase third-party support contracts for maintenance on the specific hardware or software products we have sold, our internal support desk assists the client first by performing an initial technical triage to determine the source of the problem and whether we can direct the client on how to fix the problem. We refer to these services as “OneCall.” We act as the principal in the transaction because we perform the OneCall services over the term of the support service contract and we set the price of the service charged to the client . As a result, we recognize revenue from OneCall extended service contracts on a gross sales recognition basis . We recognize the revenue ratably over the contract term of the stand ready obligation, generally one to three years . On our consolidated balance sheet, a significant portion of our contract liabilities balance relates to OneCall support services agreements for which clients have paid or have been invoiced but for which we have not yet recognized the applicable services revenue. We also defer incremental direct costs to fulfill our service contracts that we prepay to third parties for direct support of our fulfillment of the service contract to our clients under our contract terms and amortize them into operations over the term of the contracts. Third-party Provided Services A majority of our third-party sub-contractor services contracts are entered into in conjunction with other services contracts under which the services are performed by Insight teammates. We have concluded that we control all services under the contract and can direct the third-party sub-contractor to provide the requested services. As such, we act as the principal in the transaction and record the services under a gross sales recognition basis, with the selling price being recorded in sales and our cost to the third-party service provider being recorded in costs of goods sold. For certain third-party service contracts in which we do not control the services prior to transferring to our clients because we are not responsible for fulfillment of the services, we have concluded that we are an agent in the transaction and record revenue on a net sales recognition basis.
Costs of Goods Sold	Costs of Goods Sold Costs of goods sold include product costs, direct costs incurred associated with delivering services, outbound and inbound freight costs and provisions for inventory reserves. These costs are reduced by provisions for supplier discounts and certain payments and credits received from partners, as described under “Partner Funding” below.
Selling and Administrative Expenses	Selling and Administrative Expenses Selling and administrative expenses include salaries and wages for teammates who are not directly associated with delivering services, bonuses and incentives, stock-based compensation expense, employee-related expenses, facility-related expenses, marketing and advertising expense, reduced by certain payments and credits received from partners related to shared marketing expense programs, as described under “Partner Funding” below, depreciation of property and equipment, professional fees, amortization of intangible assets, provisions for losses on accounts receivable and other operating expenses.
Partner Funding	Partner Funding We receive payments and credits from partners, including consideration pursuant to volume sales incentive programs, volume purchase incentive programs and shared marketing expense programs. Partner funding received pursuant to volume sales incentive programs is recognized as it is earned as a reduction to costs of goods sold. Partner funding received pursuant to volume purchase incentive programs is allocated as a reduction to inventories based on the applicable incentives earned from each partner and is recorded in cost of goods sold as the related inventory is sold. Partner funding received pursuant to shared marketing expense programs is recorded as it is earned as a reduction of the related selling and administrative expenses in the period the program takes place if the consideration represents a reimbursement of specific, incremental, identifiable costs. Consideration that exceeds the specific, incremental, identifiable costs is classified as a reduction of costs of goods sold. The amount of partner funding recorded as a reduction of selling and administrative expenses in our statements of operations totaled $85,888,000, $77,668,000 and $68,571,000 in 2020, 2019 and 2018, respectively.
Concentrations of Risk	Concentrations of Risk Credit Risk Although we are affected by the international economic climate, management does not believe material credit risk concentration existed at December 31, 2020. We monitor our clients’ financial condition and do not require collateral. No single client accounted for more than 10% of our consolidated net sales in 2020. Partner Risk Purchases from Microsoft and Tech Data (a distributor) accounted for approximately 21% and 11%, respectively, of our aggregate purchases in 2020. No other partner accounted for more than 10% of purchases in 2020. Our top five partners as a group for 2020 were Microsoft, Tech Data (a distributor), Dell, Ingram Micro (a distributor) and Cisco Systems, and approximately 56% of our total purchases during 2020 came from this group of partners. Although brand names and individual products are important to our business, we believe that competitive sources of supply are available in substantially all of our product categories such that, with the exception of Microsoft, we are not dependent on any single partner for sourcing products.
Advertising Costs	Advertising Costs Advertising costs are expensed as they are incurred. Advertising expense of $60,865,000, $62,913,000 and $57,448,000 was recorded in 2020, 2019 and
Stock-Based Compensation	Stock-Based Compensation Stock-based compensation is measured based on the fair value of the award on the date of grant and the corresponding expense is recognized over the period during which an employee is required to provide service in exchange for the reward. Stock-based compensation expense is classified in the same line item of our consolidated statements of operations as other payroll-related expenses specific to the employee. Compensation expense related to service-based restricted stock units (“RSUs”) is recognized on a straight-line basis over the requisite service period for the entire award. Compensation expense related to performance-based RSUs is recognized on a straight-line basis over the requisite service period for each separately vesting portion of the award as if the award was, in-substance, multiple awards (i.e., a graded vesting basis). Forfeitures are recognized as they occur.
Foreign Currencies	Foreign Currencies We use the U.S. dollar as our reporting currency. The functional currencies of our foreign subsidiaries are the local currencies. Accordingly, assets and liabilities of the subsidiaries are translated into U.S. dollars at the exchange rate in effect at the balance sheet dates. Income and expense items are translated at the average exchange rate for each month within the year. The resulting translation adjustments are recorded directly in accumulated other comprehensive income, net of tax – foreign currency translation adjustments as a separate component of stockholders’ equity. Net foreign currency transaction gains/losses, including transaction gains/losses on intercompany balances that are not of a long-term investment nature and non-functional currency cash balances, are reported in other expense (income), net within non-operating (income) expense in our consolidated statements of operations.
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability 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 bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable earnings in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in earnings in the period that includes the enactment date. We recognize net deferred tax assets to the extent that we believe these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies and results of recent operations. If we determine that we would be able to realize our deferred tax assets in the future in excess of their net recorded amount, we would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. We record uncertain tax positions on the basis of a two-step process whereby (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. Interest and penalties related to unrecognized tax benefits are recognized within the income tax expense line in our consolidated statements of operations. Accrued interest and penalties are included within the related tax liability line in our consolidated balance sheets.
Contingencies	Contingencies From time to time, we are subject to potential claims and assessments from third parties. We are also subject to various government agency, client and partner audits. We continually assess whether or not such claims have merit and warrant accrual. An accrual is made if it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Such estimates are subject to change and may affect our results of operations and our cash flows.
Net Earnings Per Share ("EPS")	Net Earnings Per Share (“EPS”) Basic EPS is computed by dividing net earnings available to common stockholders by the weighted average number of common shares outstanding during each year. Diluted EPS is computed on the basis of the weighted average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method. Dilutive potential common shares include outstanding RSUs. A reconciliation of the denominators of the basic and diluted EPS calculations follows (in thousands, except per share data): Years Ended December 31, 2020 2019 2018 Numerator: Net earnings $ 172,640 $ 159,407 $ 163,677 Denominator: Weighted-average shares used to compute basic EPS 35,117 35,538 35,586 Dilutive potential common shares due to dilutive: RSUs, net of tax effect 327 421 423 Weighted-average shares used to compute diluted EPS 35,444 35,959 36,009 Net earnings per share: Basic $ 4.92 $ 4.49 $ 4.60 Diluted $ 4.87 $ 4.43 $ 4.55 In 2020, 2019 and 2018, approximately 122,000, 42,000 and 17,000, respectively, of our RSUs were not included in the diluted EPS calculations because their inclusion would have been anti-dilutive. These share-based awards could be dilutive in the future. In the years ended December 31, 2020 and 2019, certain potential outstanding shares from convertible senior notes and warrants were not included in the diluted EPS calculations because their inclusion would have been anti-dilutive.
Recently Issued Accounting Standards	Recently Issued Accounting Standards In August 2020, the FASB issued ASU No. 2020-06, “Accounting for Convertible Instruments and Contracts in an Equity’s Own Equity”. The new guidance is intended to simplify the accounting for certain convertible instruments with characteristics of both liability and equity. The guidance removes certain accounting models which separate the embedded conversion features from the host contract for convertible instruments. As a result, after the adoption of this guidance, an entity’s convertible debt instrument will be wholly accounted for as debt. The guidance also expands disclosure requirements for convertible instruments and simplifies areas of the guidance for diluted earnings-per-share calculations by requiring the use of the if-converted method. The guidance will be effective for fiscal years beginning after December 15, 2021, with early adoption permitted for fiscal years beginning after December 15, 2020 and can be adopted on either a fully retrospective or modified retrospective basis. The Company is currently evaluating the impact the adoption of this standard will have on its consolidated financial statements. In December 2019, the Financial Accounting Standards Board’s (“FASB”) issued Accounting Standard Update (“ASU”) No. 2019-12, “Simplifying the Accounting for Income Taxes.” The new standard is intended to simplify various aspects of accounting for income taxes by removing specific exceptions and amending certain requirements. The new standard is effective for interim and annual periods beginning after December 15, 2020, and early adoption is permitted. We adopted the new standard as of January 1, 2021. The adoption of this new standard did not have a material effect on our consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments – Credit Losses.” The new standard is intended to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held at each reporting date. The new standard is effective for interim and annual periods beginning after December 15, 2019, and early adoption is permitted. We adopted the new standard as of January 1, 2020. The adoption of this new standard did not have a material effect on our consolidated financial statements. In November 2019, the FASB issued ASU No. 2019-11, “Codification Improvements to Topic 326, Financial Instruments – Credit Losses.” The new standard provides amendments to the reporting of expected recoveries. The new standard is effective with the adoption of ASU No. 2016-13. We adopted the new standard as of January 1, 2020. The adoption of this new standard did not have a material effect on our consolidated financial statements. In April 2019, the FASB issued ASU No. 2019-04, “Codification Improvements to Topic 326, Financial Instruments – Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments.” The new standard provides changes for how a company considers expected recoveries and contractual extensions or renewal options when estimating expected credit losses. The new standard is effective with the adoption of ASU No. 2016-13. We adopted the new standard as of January 1, 2020. The adoption of this new standard did not have a material effect on our consolidated financial statements.

Operations and Summary of Sig_3

Operations and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Estimated Economic Lives of Property and Equipment	We record property and equipment at cost. We capitalize major improvements and betterments, while maintenance, repairs and minor replacements are expensed as incurred. Depreciation or amortization is provided using the straight-line method over the following estimated economic lives of the assets: Estimated Economic Life Leasehold improvements Shorter of underlying lease term or asset life Furniture and fixtures 2 – 7 years Equipment 3 – 5 years Software 3 – 10 years Buildings 29 years
Reconciliation of Denominators of Basic and Diluted EPS Calculations	A reconciliation of the denominators of the basic and diluted EPS calculations follows (in thousands, except per share data): Years Ended December 31, 2020 2019 2018 Numerator: Net earnings $ 172,640 $ 159,407 $ 163,677 Denominator: Weighted-average shares used to compute basic EPS 35,117 35,538 35,586 Dilutive potential common shares due to dilutive: RSUs, net of tax effect 327 421 423 Weighted-average shares used to compute diluted EPS 35,444 35,959 36,009 Net earnings per share: Basic $ 4.92 $ 4.49 $ 4.60 Diluted $ 4.87 $ 4.43 $ 4.55

Sales Recognition (Tables)

Sales Recognition (Tables)	12 Months Ended
	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Summary of Revenue Disaggregated by Reportable Operating Segments	In the following table, revenue is disaggregated by our reportable operating segments, which are primarily defined by Year Ended December 31, 2020 North America EMEA APAC Consolidated Major Offerings Hardware $ 4,418,295 $ 617,825 $ 31,953 $ 5,068,073 Software 1,260,757 760,562 82,763 2,104,082 Services 935,980 176,838 55,606 1,168,424 $ 6,615,032 $ 1,555,225 $ 170,322 $ 8,340,579 Major Client Groups Large Enterprise / Corporate $ 4,507,041 $ 1,101,557 $ 62,734 $ 5,671,332 Small and Medium-Sized Businesses 1,395,298 61,535 60,740 1,517,573 Public Sector 712,693 392,133 46,848 1,151,674 $ 6,615,032 $ 1,555,225 $ 170,322 $ 8,340,579 Revenue Recognition based on acting as Principal or Agent in the Transaction Gross revenue recognition (Principal) $ 6,284,948 $ 1,452,115 $ 146,770 $ 7,883,833 Net revenue recognition (Agent) 330,084 103,110 23,552 456,746 $ 6,615,032 $ 1,555,225 $ 170,322 $ 8,340,579 Year Ended December 31, 2019 North America EMEA APAC Consolidated Major Offerings Hardware $ 3,957,507 $ 622,949 $ 34,965 $ 4,615,421 Software 1,269,983 753,729 92,988 2,116,700 Services 796,815 149,966 52,288 999,069 $ 6,024,305 $ 1,526,644 $ 180,241 $ 7,731,190 Major Client Groups Large Enterprise / Corporate $ 4,466,384 $ 1,126,388 $ 59,786 $ 5,652,558 Small and Medium-Sized Businesses 960,432 76,666 65,033 1,102,131 Public Sector 597,489 323,590 55,422 976,501 $ 6,024,305 $ 1,526,644 $ 180,241 $ 7,731,190 Revenue Recognition based on acting as Principal or Agent in the Transaction Gross revenue recognition (Principal) $ 5,759,247 $ 1,432,300 $ 156,279 $ 7,347,826 Net revenue recognition (Agent) 265,058 94,344 23,962 383,364 $ 6,024,305 $ 1,526,644 $ 180,241 $ 7,731,190 Year Ended December 31, 2018 North America EMEA APAC Consolidated Major Offerings Hardware $ 3,610,356 $ 653,499 $ 29,496 $ 4,293,351 Software 1,112,715 736,509 107,363 1,956,587 Services 639,910 140,233 50,055 830,198 $ 5,362,981 $ 1,530,241 $ 186,914 $ 7,080,136 Major Client Groups Large Enterprise / Corporate $ 3,951,900 $ 1,134,696 $ 49,826 $ 5,136,422 Small and Medium-Sized Businesses 912,208 67,727 60,521 1,040,456 Public Sector 498,873 327,818 76,567 903,258 $ 5,362,981 $ 1,530,241 $ 186,914 $ 7,080,136 Revenue Recognition based on acting as Principal or Agent in the Transaction Gross revenue recognition (Principal) $ 5,143,228 $ 1,439,979 $ 164,394 $ 6,747,601 Net revenue recognition (Agent) 219,753 90,262 22,520 332,535 $ 5,362,981 $ 1,530,241 $ 186,914 $ 7,080,136
Summary of Information about Receivables and Contract Liabilities	The following table provides information about receivables and contract liabilities as of December 31, 2020 and 2019 (in thousands): December 31, December 31, 2020 2019 Current receivables, which are included in “Accounts receivable, net” $ 2,685,448 $ 2,511,383 Non-current receivables, which are included in “Other assets” 154,662 154,417 Contract liabilities, which are included in “Accrued expenses and other current liabilities” and “Other liabilities” 107,158 84,814
Summary of Changes in Contract Liabilities from Contract with Customers	Significant changes in the contract liabilities balances during the year ended December 31, 2020 are as follows (in thousands): Increase (Decrease) Balances at December 31, 2018 $ 82,117 Recognition of the beginning contract liabilities to revenue, as the result of performance obligations satisfied (73,750 ) Cash received in advance and not recognized as revenue 69,376 Contract liabilities assumed in an acquisition 7,071 Balances at December 31, 2019 $ 84,814 Recognition of the beginning contract liabilities to revenue, as the result of performance obligations satisfied (59,553 ) Cash received in advance and not recognized as revenue 81,897 Balances at December 31, 2020 $ 107,158
Summary of Estimated Net Sales Related to Performance Obligation	The following table includes estimated net sales related to performance obligations that are unsatisfied (or partially unsatisfied) as of December 31, 2020 that are expected to be recognized in the future (in thousands): Services 2021 111,295 2022 34,948 2023 14,105 2024 and thereafter 6,631 Total remaining performance obligations $ 166,979

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Property Plant And Equipment [Abstract]
Property and Equipment	Property and equipment consist of the following (in thousands): December 31, 2020 2019 Software $ 159,413 $ 114,674 Buildings 66,842 92,092 Equipment 62,209 60,661 Furniture and fixtures 38,133 34,768 Leasehold improvements 35,665 33,668 Land 39,819 31,374 402,081 367,237 Accumulated depreciation and amortization (256,065 ) (236,330 ) Property and equipment, net $ 146,016 $ 130,907

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill for the year ended December 31, 2020 are as follows (in thousands): North America EMEA APAC Consolidated Goodwill $ 479,690 $ 155,188 $ 20,797 $ 655,675 Accumulated impairment losses (323,422 ) (151,439 ) (13,973 ) (488,834 ) Goodwill acquired during 2019 240,550 7,910 — 248,460 Foreign currency translation adjustment — (87 ) (65 ) (152 ) Balance at December 31, 2019 $ 396,818 $ 11,572 $ 6,759 $ 415,149 Goodwill acquired during 2020 — 4,865 — 4,865 Measurement period adjustments during 2020 5,711 (677 ) — 5,034 Foreign currency translation adjustment 947 2,767 606 4,320 Balance at December 31, 2020 $ 403,476 $ 18,527 $ 7,365 $ 429,368

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Intangible Assets, Net	Intangible assets consist of the following (in thousands): December 31, 2020 2019 Customer relationships $ 342,492 $ 336,455 Other 7,906 15,621 350,398 352,076 Accumulated amortization (103,483 ) (73,492 ) Intangible assets, net $ 246,915 $ 278,584
Future Amortization Expenses	Future amortization expense for the remaining unamortized balance as of December 31, 2020 is estimated as follows (in thousands): Years Ending December 31, Amortization Expense 2021 $ 31,957 2022 31,084 2023 29,825 2024 28,344 2025 28,008 Thereafter 97,697 Total amortization expense $ 246,915

Debt, Finance Leases and Othe_2

Debt, Finance Leases and Other Financing Obligations (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Long-Term Debt	Our long-term debt consists of the following (in thousands): December 31, 2020 2019 ABL revolving credit facility $ 140,000 $ 570,706 Convertible senior notes due 2025 296,419 284,836 Finance leases and other financing obligations 2,267 3,822 Total 438,686 859,364 Less: current portion of long-term debt (1,105 ) (1,691 ) Long-term debt $ 437,581 $ 857,673
Schedule of Convertible Senior Notes Balances	The notes consist of the following balances reported within the consolidated balance sheet as of December 31, 2020 and 2019 (in thousands): December 31, 2020 2019 Liability: Principal $ 350,000 $ 350,000 Less: debt discount and issuance costs, net of accumulated accretion (53,581 ) (65,164 ) Net carrying amount $ 296,419 $ 284,836 Equity, net of deferred tax $ 44,731 $ 44,731
Summary of Interest Expense Components Resulting From Notes	The following table summarizes the interest expense components resulting from the notes reported within the consolidated statement of operations for the year ended December 31, 2020 and 2019 (in thousands): December 31, 2020 2019 Contractual coupon interest $ 2,625 $ 984 Amortization of debt discount $ 10,226 $ 3,728 Amortization of debt issuance costs $ 1,359 $ 479

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Schedule of Financial Statement Classification of Lease Balances With Consolidated Balance Sheet	The following table provides information about the financial statement classification of our lease balances reported within the consolidated balance sheets as of December 31, 2020 and December 31, 2019 (in thousands): Leases Classification December 31, 2020 December 31, 2019 Assets Operating lease assets Other assets $ 79,418 $ 74,684 Finance lease assets Property and equipment (a) 2,103 3,297 Total lease assets $ 81,521 $ 77,981 Liabilities Current Operating lease liabilities Accrued expenses and other current liabilities $ 20,848 $ 19,648 Finance lease liabilities Current portion of long-term debt 1,105 1,691 Non-current Operating lease liabilities Other liabilities 65,192 60,285 Finance lease liabilities Long-term debt 1,162 2,131 Total lease liabilities $ 88,307 $ 83,755 (a) Recorded net of accumulated amortization of $2,162,000 and $861,000 as of December 31, 2020 and 2019, respectively.
Schedule of Financial Statement Classification of Lease Balances With Consolidated Statement of Operations	The following table provides information about the financial statement classification of our lease expenses reported within the consolidated statement of operations for the year ended December 31, 2020 and 2019 (in thousands): Lease cost Classification Year ended December 31, 2020 Year ended December 31, 2019 Operating lease cost (a) (b) Selling and administrative expenses $ 25,918 $ 21,393 Finance lease cost Amortization of leased assets Selling and administrative expenses 1,301 861 Interest on lease liabilities Interest expense, net 104 110 Total lease cost $ 27,323 $ 22,364 (a) Includes immaterial amounts recorded to cost of goods sold. (b) Excludes short-term and variable lease costs, which are immaterial.
Schedule of Future Minimum Lease Payments Under Non-cancelable Leases	Future minimum lease payments under non-cancelable leases as of December 31, 2020 are as follows (in thousands): Operating leases Finance leases Total 2021 $ 23,144 $ 1,114 $ 24,258 2022 19,898 682 20,580 2023 14,104 476 14,580 2024 8,958 45 9,003 2025 7,061 — 7,061 After 2025 22,549 — 22,549 Total lease payments 95,714 2,317 98,031 Less: Interest (9,674 ) (50 ) (9,724 ) Present value of lease liabilities $ 86,040 $ 2,267 $ 88,307 Operating lease payments include $13.4 million related to options to extend lease terms that are reasonably certain of being exercised.
Schedule of Weighted Average Remaining Term and Discount Rates	The following table provides information about the remaining lease terms and discount rates applied as of December 31, 2020 and 2019: December 31, 2020 December 31, 2019 Weighted average remaining lease term (years) Operating leases 6.01 6.03 Finance leases 2.37 2.92 Weighted average discount rate (%) Operating leases 3.35 3.62 Finance leases 3.27 3.65
Schedule of Other Information Related to Leases	The following table provides other information related to leases for the year ended December 31, 2020 and 2019 (in thousands): December 31, 2020 December 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 25,849 $ 20,928 Leased assets obtained in exchange for new operating lease liabilities (a) 25,583 10,460 (a) Excludes operating lease assets acquired as part of the PCM acquisition of $17,951,000 in 2019. There were no major acquisitions in 2020.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Pre-tax Amounts by Operating Segment for Stock-Based Compensation	We recorded the following pre-tax amounts in selling and administrative expenses for stock-based compensation, by operating segment, in the accompanying consolidated financial statements (in thousands): Years Ended December 31, 2020 2019 2018 North America $ 13,151 $ 12,055 $ 11,697 EMEA 3,953 3,437 3,170 APAC 623 519 488 Total Consolidated $ 17,727 $ 16,011 $ 15,355
Summary of Restricted Stock Units Activity	The following table summarizes our RSU activity during 2020: Number Weighted Average Grant Date Fair Value Fair Value Nonvested at the beginning of year 923,400 $ 45.58 Granted 401,805 $ 59.31 Vested, including shares withheld to cover taxes (385,216 ) $ 42.60 $ 16,410,202 (a) Forfeited (76,271 ) $ 51.60 Nonvested at the end of year 863,718 $ 52.77 $ 65,720,303 (b) (a) The aggregate fair value of vested RSUs represents the total pre-tax fair value, based on the closing stock price on the day of vesting, which would have been received by holders of RSUs had all such holders sold their underlying shares on that date. The aggregate intrinsic value for RSUs which vested during 2019 and 2018 was $24,837,997 and $14,302,223, respectively. (b) The aggregate fair value of the nonvested RSUs and the RSUs expected to vest represents the total pre-tax fair value, based on our closing stock price of $76.09 as of December 31, 2020, which would have been received by holders of RSUs had all such holders sold their underlying shares on that date.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Earning Before IncomeTaxes and Related Income Tax Expenses	The following table presents the U.S. and foreign components of earnings before income taxes and the related income tax expense (in thousands): Years Ended December 31, 2020 2019 2018 Earnings before income taxes: United States $ 154,788 $ 142,410 $ 145,907 Foreign 73,664 69,306 65,995 $ 228,452 $ 211,716 $ 211,902 Income tax expense: Current: U.S. Federal $ 38,732 $ 20,254 $ 18,334 U.S. State and local 8,203 5,457 3,218 Foreign 22,123 19,180 17,547 69,058 44,891 39,099 Deferred: U.S. Federal (10,048 ) 9,180 8,123 U.S. State and local (1,779 ) 1,210 1,142 Foreign (1,419 ) (2,972 ) (139 ) (13,246 ) 7,418 9,126 $ 55,812 $ 52,309 $ 48,225
Schedule Reconciles Difference Between U.S. Federal Income Taxes at U.S. Statutory Rate and Our Income Tax Expense	The following schedule reconciles the differences between the U.S. federal income taxes at the U.S. statutory rate and our income tax expense (dollars in thousands): 2020 2019 2018 Statutory federal income tax rate $ 47,975 21.0 % $ 44,460 21.0 % $ 44,499 21.0 % State income tax expense, net of federal income tax benefit 6,280 2.7 7,239 3.4 6,767 3.2 Audits and adjustments, net 662 0.3 2,556 1.2 2,659 1.3 Change in valuation allowances 476 0.2 (2,739 ) (1.3 ) 60 — Foreign income taxed at different rates 3,825 1.7 4,024 1.9 2,639 1.2 Effects of U.S. tax reform — — — — (5,594 ) (2.7 ) Research and development credits (1,858 ) (0.8 ) (5,438 ) (2.6 ) (4,132 ) (1.9 ) Other, net (1,548 ) (0.7 ) 2,207 1.1 1,327 0.7 Effective tax rate $ 55,812 24.4 % $ 52,309 24.7 % $ 48,225 22.8 %
Significant Components of Deferred Tax Assets and Liabilities	The significant components of deferred tax assets and liabilities are as follows (in thousands): December 31, 2020 2019 Deferred tax assets: Net operating losses $ 27,453 $ 27,328 Foreign tax credits 16,027 16,091 Other 25,786 20,153 Gross deferred tax assets 69,266 63,572 Valuation allowances (40,098 ) (38,247 ) Total deferred tax assets 29,168 25,325 Deferred tax liabilities: Goodwill and other intangibles (48,831 ) (48,279 ) Property and equipment (6,715 ) (12,702 ) Other (2,540 ) (5,406 ) Total deferred tax liabilities (58,086 ) (66,387 ) Net deferred tax (liabilities) assets $ (28,918 ) $ (41,062 )
Net Non-Current Deferred Tax Assets and Liabilities	The net non-current deferred tax assets and liabilities are as follows (in thousands): December 31, 2020 2019 Net non-current deferred tax assets, which are included in "Other assets" $ 4,291 $ 3,571 Net non-current deferred tax liabilities (33,209 ) (44,633 ) Net deferred tax (liabilities) assets $ (28,918 ) $ (41,062 )

Share Repurchase Programs (Tabl

Share Repurchase Programs (Tables)	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Summary of Shares of Common Stock Repurchased Under Repurchase Programs	The following table summarizes the shares of our common stock that we repurchased on the open market under these repurchase programs during the years ended December 31, 2020, 2019 and 2018, respectively, in thousands, except per share amounts: Year Total Number of Shares Purchased Average Price Paid per Share Approximate Dollar Value of Shares Purchased 2020 445 $ 56.20 $ 25,000 2019 541 51.56 27,899 2018 641 34.42 22,069 Total 1,627 $ 74,968

Supplemental Financial Inform_2

Supplemental Financial Information (Tables)	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Summary of Additions and Deductions Related to Allowances for Doubtful Accounts	Additions and deductions related to the allowance for doubtful accounts receivable for 2020, 2019 and 2018 were as follows (in thousands): Balance at Beginning of Year Additions Deductions Balance at End of Year Allowance for doubtful accounts receivable: Year ended December 31, 2020 $ 10,762 $ 10,163 $ (5,819 ) $ 15,106 Year ended December 31, 2019 $ 10,462 $ 5,079 $ (4,779 ) $ 10,762 Year ended December 31, 2018 $ 10,158 $ 4,776 $ (4,472 ) $ 10,462

Cash Flows (Tables)

Cash Flows (Tables)	12 Months Ended
	Dec. 31, 2020
Supplemental Cash Flow Elements [Abstract]
Schedule of Cash Payments for Interest on Indebtedness and Cash Payments for Taxes on Income	Cash payments for interest on indebtedness and cash payments for taxes on income were as follows (in thousands): Years Ended December 31, 2020 2019 2018 Supplemental disclosures of cash flow information: Cash paid during the year for interest $ 16,605 $ 6,246 $ 10,155 Cash paid during the year for income taxes, net of refunds $ 62,545 $ 42,484 $ 31,218

Segment and Geographic Inform_2

Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Net Sales by Offering for North America, EMEA and APAC	The following tables summarize net sales by offering for North America, EMEA and APAC by sales mix amounts (in thousands): North America Years Ended December 31, Sales Mix 2020 2019 2018 Hardware $ 4,418,295 $ 3,957,507 $ 3,610,356 Software 1,260,757 1,269,983 1,112,715 Services 935,980 796,815 639,910 $ 6,615,032 $ 6,024,305 $ 5,362,981 EMEA Years Ended December 31, Sales Mix 2020 2019 2018 Hardware $ 617,825 $ 622,949 $ 653,499 Software 760,562 753,729 736,509 Services 176,838 149,966 140,233 $ 1,555,225 $ 1,526,644 $ 1,530,241 APAC Years Ended December 31, Sales Mix 2020 2019 2018 Hardware $ 31,953 $ 34,965 $ 29,496 Software 82,763 92,988 107,363 Services 55,606 52,288 50,055 $ 170,322 $ 180,241 $ 186,914
Financial Information about Reportable Operating Segments	The tables below present information about our reportable operating segments (in thousands): Year Ended December 31, 2020 North America EMEA APAC Consolidated Net Sales: Products $ 5,679,052 $ 1,378,387 $ 114,716 $ 7,172,155 Services 935,980 176,838 55,606 1,168,424 Total net sales 6,615,032 1,555,225 170,322 8,340,579 Costs of goods sold: Products 5,130,851 1,261,236 104,914 6,497,001 Services 462,793 57,943 22,900 543,636 Total costs of goods sold 5,593,644 1,319,179 127,814 7,040,637 Gross profit 1,021,388 236,046 42,508 1,299,942 Operating expenses: Selling and administrative expenses 790,913 192,485 30,367 1,013,765 Severance and restructuring expenses 9,273 2,989 132 12,394 Acquisition-related expenses 2,004 204 — 2,208 Earnings from operations $ 219,198 $ 40,368 $ 12,009 $ 271,575 Year Ended December 31, 2019 North America EMEA APAC Consolidated Net Sales: Products $ 5,227,490 $ 1,376,678 $ 127,953 $ 6,732,121 Services 796,815 149,966 52,288 999,069 Total net sales 6,024,305 1,526,644 180,241 7,731,190 Costs of goods sold: Products 4,748,608 1,258,974 117,778 6,125,360 Services 404,583 40,587 22,562 467,732 Total costs of goods sold 5,153,191 1,299,561 140,340 6,593,092 Gross profit 871,114 227,083 39,901 1,138,098 Operating expenses: Selling and administrative expenses 664,374 186,957 29,406 880,737 Severance and restructuring expenses 4,946 334 145 5,425 Acquisition-related expenses 11,342 — — 11,342 Earnings from operations $ 190,452 $ 39,792 $ 10,350 $ 240,594 Year Ended December 31, 2018 North America EMEA APAC Consolidated Net Sales: Products $ 4,723,071 $ 1,390,008 $ 136,859 $ 6,249,938 Services 639,910 140,233 50,055 830,198 Total net sales 5,362,981 1,530,241 186,914 7,080,136 Costs of goods sold: Products 4,313,070 1,273,422 124,908 5,711,400 Services 317,216 35,352 22,450 375,018 Total costs of goods sold 4,630,286 1,308,774 147,358 6,086,418 Gross profit 732,695 221,467 39,556 993,718 Operating expenses: Selling and administrative expenses 545,091 182,470 28,968 756,529 Severance and restructuring expenses 1,617 1,677 130 3,424 Acquisition-related expenses 282 — — 282 Earnings from operations $ 185,705 $ 37,320 $ 10,458 $ 233,483
Summary of Total Assets by Reportable Operating Segment	The following table is a summary of our total assets by reportable operating segment (in thousands): December 31, 2020 December 31, 2019 North America $ 4,837,155 $ 3,814,408 EMEA 735,771 699,856 APAC 155,761 123,349 Corporate assets and intercompany eliminations, net (1,417,955 ) (459,434 ) Total assets $ 4,310,732 $ 4,178,179
Summary of Geographic Net Sales and Long-Lived Assets	The following is a summary of our geographic net sales and long-lived assets, consisting of property and equipment, net (in thousands): United States United Kingdom Other Foreign Total 2020 Net sales $ 6,237,901 $ 805,401 $ 1,297,277 $ 8,340,579 Total long-lived assets $ 110,161 $ 11,042 $ 24,813 $ 146,016 2019 Net sales $ 5,696,422 $ 776,051 $ 1,258,717 $ 7,731,190 Total long-lived assets $ 103,678 $ 13,448 $ 13,781 $ 130,907 2018 Net sales $ 5,100,456 $ 843,145 $ 1,136,535 $ 7,080,136
Pre-Tax Depreciation and Amortization by Operating Segment	We recorded the following pre-tax amounts, by operating segment, for depreciation and amortization in the accompanying consolidated financial statements (in thousands): Years Ended December 31, 2020 2019 2018 Depreciation and amortization of property and equipment: North America $ 22,396 $ 17,827 $ 17,164 EMEA 5,073 4,166 4,058 APAC 556 545 499 28,025 22,538 21,721 Amortization of intangible assets: North America 34,990 22,382 14,791 EMEA 2,088 828 285 APAC 457 461 661 37,535 23,671 15,737 Total $ 65,560 $ 46,209 $ 37,458

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2020
Business Combinations [Abstract]
Summary of Purchase Price and Estimated Fair Value of Assets Acquired and Liabilities Assumed	The following table summarizes the purchase price and the estimated fair value of the assets acquired and liabilities assumed at the date of acquisition (in thousands): Purchase price net of cash and cash equivalents acquired $ 660,925 Fair value of net assets acquired: Current assets $ 531,941 Identifiable intangible assets - see description below 191,370 Property and equipment 91,213 Other assets 32,699 Current liabilities (369,183 ) Long-term liabilities, including deferred taxes (71,009 ) Total fair value of net assets acquired 407,031 Excess purchase price over fair value of net assets acquired ("goodwill") $ 253,894
Estimated Useful Lives of Identifiable Intangibles	The identifiable intangibles resulting from the acquisition are amortized using the straight-line method over the following estimated useful lives: Intangible Assets Estimated Economic Life Customer relationships 10 - 12 Years Trade name 1 Year Non-compete agreements 2 - 3 Years
Summary of Pro Forma Information	The following table reports pro forma information as if the acquisition of PCM had been completed at the beginning of the earliest period presented (in thousands, except per share amounts): Year Ended December 31, 2019 2018 Net sales As reported $ 7,731,190 $ 7,080,136 Pro forma $ 9,207,512 $ 9,241,183 Net earnings As reported $ 159,407 $ 163,677 Pro forma $ 171,102 $ 167,499 Diluted earnings per share As reported $ 4.43 $ 4.55 Pro forma $ 4.76 $ 4.65

Selected Quarterly Financial _2

Selected Quarterly Financial Information (Tables)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Consolidated Quarterly Financial Information	The following tables set forth selected unaudited consolidated quarterly financial information for 2020 and 2019 (in thousands, except per share data): Quarters Ended December 31, 2020 September 30, 2020 June 30, 2020 March 31, 2020 Net sales $ 2,291,315 $ 1,936,478 $ 1,968,735 $ 2,144,051 Costs of goods sold 1,948,661 1,628,915 1,644,346 1,818,715 Gross profit 342,654 307,563 324,389 325,336 Operating expenses: Selling and administrative expenses 257,167 245,155 242,580 268,863 Severance and restructuring expenses 2,432 808 7,010 2,144 Acquisition-related expenses 13 118 611 1,466 Earnings from operations 83,042 61,482 74,188 52,863 Non-operating (income) expense: Interest expense, net 10,434 9,115 10,219 11,826 Other (income) expense, net 693 1,301 1,098 (1,563 ) Earnings before income taxes 71,915 51,066 62,871 42,600 Income tax expense 18,527 12,160 16,486 8,639 Net earnings $ 53,388 $ 38,906 $ 46,385 $ 33,961 Net earnings per share: Basic $ 1.52 $ 1.11 $ 1.32 $ 0.96 Diluted $ 1.50 $ 1.10 $ 1.32 $ 0.95 Shares used in per share calculations: Basic 35,098 35,077 35,060 35,233 Diluted 35,523 35,348 35,260 35,646 Quarters Ended December 31, 2019 September 30, 2019 June 30, 2019 March 31, 2019 Net sales $ 2,297,156 $ 1,912,547 $ 1,836,021 $ 1,685,466 Costs of goods sold 1,959,174 1,636,352 1,560,572 1,436,994 Gross profit 337,982 276,195 275,449 248,472 Operating expenses: Selling and administrative expenses 266,970 223,215 199,489 191,063 Severance and restructuring expenses 1,713 2,662 680 370 Acquisition-related expenses 2,283 5,896 3,163 — Earnings from operations 67,016 44,422 72,117 57,039 Non-operating (income) expense: Interest expense, net 11,897 7,694 4,335 4,552 Other (income) expense, net (458 ) (538 ) 346 1,050 Earnings before income taxes 55,577 37,266 67,436 51,437 Income tax expense 12,627 10,134 17,438 12,110 Net earnings $ 42,950 $ 27,132 $ 49,998 $ 39,327 Net earnings per share: Basic $ 1.22 $ 0.76 $ 1.40 $ 1.10 Diluted $ 1.20 $ 0.76 $ 1.38 $ 1.09 Shares used in per share calculations: Basic 35,259 35,512 35,772 35,609 Diluted 35,755 35,868 36,111 36,103

Operations and Summary of Sig_4

Operations and Summary of Significant Accounting Policies - Additional Information (Detail)	Feb. 28, 2020	Aug. 30, 2019USD ($)	Aug. 01, 2018USD ($)	Dec. 31, 2020USD ($)Segmentshares	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)shares
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of operating segments | Segment				3
Acquisitions, net of cash and cash equivalents acquired				$ 6,405,000	$ 664,287,000	$ 74,938,000
Accounts receivable from unconsolidated affiliate				8,398,000	15,078,000
Operating lease liability				86,040,000
Partner funding recorded as reduction of selling and administrative expenses				85,888,000	77,668,000	68,571,000
Advertising expense				$ 60,865,000	$ 62,913,000	$ 57,448,000
Restricted Stock Units (RSUs) [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
RSUs excluded from the diluted EPS calculations | shares				122,000	42,000	17,000
Credit Risk [Member] | Net Sales [Member] | Single Customer [Member] | Maximum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration percentage				10.00%
Partner Risk [Member] | Purchases [Member] | Tech Data [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration percentage				11.00%
Partner Risk [Member] | Purchases [Member] | Microsoft [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration percentage				21.00%
Partner Risk [Member] | Purchases [Member] | Top Five Suppliers [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration percentage				56.00%
Partner Risk [Member] | Purchases [Member] | Maximum [Member] | Significant Supplier [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration percentage				10.00%
ASU 2016-02 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Operating lease ROU assets				$ 65,922,000
Operating lease liability				$ 70,512,000
Cardinal Solutions Group, Inc [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Acquisitions, net of cash and cash equivalents acquired			$ 78,400,000
Business acquisition, effective date of acquisition			Aug. 1, 2018
PCM [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cash purchase price		$ 745,562,000
Payments to acquire businesses, net of cash and cash equivalents acquired		84,637,000
Acquisitions, net of cash and cash equivalents acquired		$ 660,925,000
Business acquisition, effective date of acquisition		Aug. 30, 2019
vNext [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Business acquisition, effective date of acquisition	Feb. 28, 2020

Operations and Summary of Sig_5

Operations and Summary of Significant Accounting Policies - Estimated Economic Lives of Property and Equipment (Detail)	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Leasehold improvements	Shorter of underlying lease term or asset life
Furniture and fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful Life	2 years
Furniture and fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful Life	7 years
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful Life	5 years
Software [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful Life	10 years
Buildings [Member]
Property, Plant and Equipment [Line Items]
Useful Life	29 years

Operations and Summary of Sig_6

Operations and Summary of Significant Accounting Policies - Reconciliation of Denominators of Basic and Diluted EPS Calculations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net earnings	$ 53,388	$ 38,906	$ 46,385	$ 33,961	$ 42,950	$ 27,132	$ 49,998	$ 39,327	$ 172,640	$ 159,407	$ 163,677
Denominator:
Weighted-average shares used to compute basic EPS	35,098	35,077	35,060	35,233	35,259	35,512	35,772	35,609	35,117	35,538	35,586
Dilutive potential common shares due to dilutive: RSUs, net of tax effect									327	421	423
Weighted-average shares used to compute diluted EPS	35,523	35,348	35,260	35,646	35,755	35,868	36,111	36,103	35,444	35,959	36,009
Net earnings per share:
Basic	$ 1.52	$ 1.11	$ 1.32	$ 0.96	$ 1.22	$ 0.76	$ 1.40	$ 1.10	$ 4.92	$ 4.49	$ 4.60
Diluted	$ 1.50	$ 1.10	$ 1.32	$ 0.95	$ 1.20	$ 0.76	$ 1.38	$ 1.09	$ 4.87	$ 4.43	$ 4.55

Sales Recognition - Summary of

Sales Recognition - Summary of Revenue Disaggregated by Reportable Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	$ 2,291,315	$ 1,936,478	$ 1,968,735	$ 2,144,051	$ 2,297,156	$ 1,912,547	$ 1,836,021	$ 1,685,466	$ 8,340,579	$ 7,731,190	$ 7,080,136
Hardware Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									5,068,073	4,615,421	4,293,351
Software Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									2,104,082	2,116,700	1,956,587
Services Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									1,168,424	999,069	830,198
Large Enterprise / Corporate [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									5,671,332	5,652,558	5,136,422
Small and Medium-Sized Businesses [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									1,517,573	1,102,131	1,040,456
Public Sector [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									1,151,674	976,501	903,258
Gross Revenue Recognition (Principal) [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									7,883,833	7,347,826	6,747,601
Net Revenue Recognition (Agent) [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									456,746	383,364	332,535
North America Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									6,615,032	6,024,305	5,362,981
North America Segment [Member] | Hardware Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									4,418,295	3,957,507	3,610,356
North America Segment [Member] | Software Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									1,260,757	1,269,983	1,112,715
North America Segment [Member] | Services Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									935,980	796,815	639,910
North America Segment [Member] | Large Enterprise / Corporate [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									4,507,041	4,466,384	3,951,900
North America Segment [Member] | Small and Medium-Sized Businesses [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									1,395,298	960,432	912,208
North America Segment [Member] | Public Sector [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									712,693	597,489	498,873
North America Segment [Member] | Gross Revenue Recognition (Principal) [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									6,284,948	5,759,247	5,143,228
North America Segment [Member] | Net Revenue Recognition (Agent) [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									330,084	265,058	219,753
EMEA Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									1,555,225	1,526,644	1,530,241
EMEA Segment [Member] | Hardware Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									617,825	622,949	653,499
EMEA Segment [Member] | Software Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									760,562	753,729	736,509
EMEA Segment [Member] | Services Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									176,838	149,966	140,233
EMEA Segment [Member] | Large Enterprise / Corporate [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									1,101,557	1,126,388	1,134,696
EMEA Segment [Member] | Small and Medium-Sized Businesses [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									61,535	76,666	67,727
EMEA Segment [Member] | Public Sector [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									392,133	323,590	327,818
EMEA Segment [Member] | Gross Revenue Recognition (Principal) [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									1,452,115	1,432,300	1,439,979
EMEA Segment [Member] | Net Revenue Recognition (Agent) [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									103,110	94,344	90,262
APAC Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									170,322	180,241	186,914
APAC Segment [Member] | Hardware Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									31,953	34,965	29,496
APAC Segment [Member] | Software Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									82,763	92,988	107,363
APAC Segment [Member] | Services Net Sales [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									55,606	52,288	50,055
APAC Segment [Member] | Large Enterprise / Corporate [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									62,734	59,786	49,826
APAC Segment [Member] | Small and Medium-Sized Businesses [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									60,740	65,033	60,521
APAC Segment [Member] | Public Sector [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									46,848	55,422	76,567
APAC Segment [Member] | Gross Revenue Recognition (Principal) [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									146,770	156,279	164,394
APAC Segment [Member] | Net Revenue Recognition (Agent) [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue									$ 23,552	$ 23,962	$ 22,520

Sales Recognition - Summary o_2

Sales Recognition - Summary of Information about Receivables and Contract Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Current receivables, which are included in “Accounts receivable, net”	$ 2,685,448	$ 2,511,383
Contract liabilities, which are included in “Accrued expenses and other current liabilities” and “Other liabilities”	107,158	84,814	$ 82,117
Accounts Receivable, Net [Member]
Disaggregation of Revenue [Line Items]
Current receivables, which are included in “Accounts receivable, net”	2,685,448	2,511,383
Other Assets [Member]
Disaggregation of Revenue [Line Items]
Non-current receivables, which are included in “Other assets”	154,662	154,417
Accrued Expenses and Other Current Liabilities and Other Liabilities [Member]
Disaggregation of Revenue [Line Items]
Contract liabilities, which are included in “Accrued expenses and other current liabilities” and “Other liabilities”	$ 107,158	$ 84,814

Sales Recognition - Summary o_3

Sales Recognition - Summary of Changes in Contract Liabilities from Contract with Customers (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Beginning balance, Contract Liabilities	$ 84,814	$ 82,117
Recognition of the beginning contract liabilities to revenue, as the result of performance obligations satisfied	(59,553)	(73,750)
Cash received in advance and not recognized as revenue	81,897	69,376
Contract liabilities assumed in an acquisition		7,071
Ending balance, Contract Liabilities	$ 107,158	$ 84,814

Sales Recognition - Summary o_4

Sales Recognition - Summary of Estimated Net Sales Related to Performance Obligation (Detail) - Services [Member] $ in Thousands	Dec. 31, 2020USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total remaining performance obligations	$ 166,979
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total remaining performance obligations	$ 111,295
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total remaining performance obligations	$ 34,948
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total remaining performance obligations	$ 14,105
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total remaining performance obligations	$ 6,631
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year

Sales Recognition - Summary o_5

Sales Recognition - Summary of Estimated Net Sales Related to Performance Obligation (Detail 1) $ in Thousands	Dec. 31, 2020USD ($)
Services [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total remaining performance obligations	$ 166,979

Sales Recognition - Additional

Sales Recognition - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Description of expected duration	With the exception of remaining performance obligations associated with our OneCall Support Services contracts which are included in the table above regardless of original duration, remaining performance obligations that have original expected duration of one year or less are not included in the table above. Amounts not included in the table above have an average original expected duration of nine months.
Time and material contracts expected duration	21 months

Assets Held for Sale - Addition

Assets Held for Sale - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020USD ($)
Long Lived Assets Held For Sale [Line Items]
Proceeds from sale of property	$ 40,295,000
Irvine, California Property [Member]
Long Lived Assets Held For Sale [Line Items]
Proceeds from sale of property	14,218,000
El Segundo, California [Member]
Long Lived Assets Held For Sale [Line Items]
Proceeds from sale of property	$ 26,404,000

Property and Equipment - Proper

Property and Equipment - Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 402,081	$ 367,237
Accumulated depreciation and amortization	(256,065)	(236,330)
Property and equipment, net	146,016	130,907
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	159,413	114,674
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	66,842	92,092
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	62,209	60,661
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	38,133	34,768
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	35,665	33,668
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 39,819	$ 31,374

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($)	Nov. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense		$ 28,025,000	$ 22,538,000	$ 21,721,000
Proceeds from sale of property		40,295,000
Irvine, California Property [Member]
Property, Plant and Equipment [Line Items]
Proceeds from sale of property		14,218,000
El Segundo, California [Member]
Property, Plant and Equipment [Line Items]
Proceeds from sale of property		26,404,000
Software [Member]
Property, Plant and Equipment [Line Items]
Assets in process of readied for use		5,650,000
Buildings [Member]
Property, Plant and Equipment [Line Items]
Assets in process of readied for use		29,427,000
Land [Member]
Property, Plant and Equipment [Line Items]
Assets in process of readied for use		$ 11,700,000
Arizona [Member]
Property, Plant and Equipment [Line Items]
Purchase of real estate	$ 48,000,000

Goodwill - Changes in Carrying

Goodwill - Changes in Carrying Amount of Goodwill (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Goodwill [Line Items]
Beginning Balance	$ 415,149
Goodwill		$ 655,675
Accumulated impairment losses		(488,834)
Goodwill acquired during the year	4,865	248,460
Measurement period adjustments during the year	5,034
Foreign currency translation adjustment	4,320	(152)
Ending Balance	429,368	415,149
North America Segment [Member]
Goodwill [Line Items]
Beginning Balance	396,818
Goodwill		479,690
Accumulated impairment losses		(323,422)
Goodwill acquired during the year		240,550
Measurement period adjustments during the year	5,711
Foreign currency translation adjustment	947
Ending Balance	403,476	396,818
EMEA Segment [Member]
Goodwill [Line Items]
Beginning Balance	11,572
Goodwill		155,188
Accumulated impairment losses		(151,439)
Goodwill acquired during the year	4,865	7,910
Measurement period adjustments during the year	(677)
Foreign currency translation adjustment	2,767	(87)
Ending Balance	18,527	11,572
APAC Segment [Member]
Goodwill [Line Items]
Beginning Balance	6,759
Goodwill		20,797
Accumulated impairment losses		(13,973)
Foreign currency translation adjustment	606	(65)
Ending Balance	$ 7,365	$ 6,759

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) - USD ($)	Aug. 30, 2019	Aug. 01, 2018	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill acquired during the year			$ 4,865,000	$ 248,460,000
Goodwill measurement period adjustment			5,034,000
North America Segment [Member]
Goodwill [Line Items]
Goodwill acquired during the year				240,550,000
Goodwill measurement period adjustment			5,711,000
PCM [Member]
Goodwill [Line Items]
Business acquisition, effective date of acquisition	Aug. 30, 2019
PCM [Member] | North America and EMEA Segment [Member]
Goodwill [Line Items]
Goodwill acquired during the year	$ 253,894,000
Goodwill measurement period adjustment			$ 5,034,000
Business acquisition, effective date of acquisition	Aug. 30, 2019
Cardinal Solutions Group, Inc [Member]
Goodwill [Line Items]
Goodwill measurement period adjustment		$ 3,400,000
Business acquisition, effective date of acquisition		Aug. 1, 2018
Cardinal Solutions Group, Inc [Member] | North America Segment [Member]
Goodwill [Line Items]
Goodwill acquired during the year				36,040,000
Goodwill measurement period adjustment				$ 400,000
Business acquisition, effective date of acquisition		Aug. 1, 2018

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	$ 350,398	$ 352,076
Accumulated amortization	(103,483)	(73,492)
Intangible assets, net	246,915	278,584
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	342,492	336,455
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	$ 7,906	$ 15,621

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 37,535	$ 23,671	$ 15,737

Intangible Assets - Future Amor

Intangible Assets - Future Amortization Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
2021	$ 31,957
2022	31,084
2023	29,825
2024	28,344
2025	28,008
Thereafter	97,697
Intangible assets, net	$ 246,915	$ 278,584

Accounts Payable - Inventory _2

Accounts Payable - Inventory Financing Facilities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jul. 06, 2020
Accounts Payable And Accrued Expenses [Line Items]
Accounts payable-inventory financing facility	$ 356,930,000	$ 253,676,000
Unsecured Inventory Financing Facility [Member] | MUFG Bank Ltd [Member]
Accounts Payable And Accrued Expenses [Line Items]
Inventory financing facility interest rate if balances are not paid within stated vendor terms	prime plus 2.00%
Inventory financing facility rate if vendor terms not met equal prime plus	2.00%
Unsecured Inventory Financing Facility [Member] | MUFG Bank Ltd [Member] | Minimum [Member]
Accounts Payable And Accrued Expenses [Line Items]
Accounts payable-inventory financing facility	$ 200,000,000
Unsecured Inventory Financing Facility [Member] | MUFG Bank Ltd [Member] | Maximum [Member]
Accounts Payable And Accrued Expenses [Line Items]
Accounts payable-inventory financing facility	$ 250,000,000
Unsecured Inventory Financing Facility [Member] | PNC Facility [Member]
Accounts Payable And Accrued Expenses [Line Items]
Inventory financing facility maximum borrowing capacity				$ 250,000,000
Inventory financing facility interest rate if balances are not paid within stated vendor terms	LIBOR plus 4.50%
Inventory financing facility rate if vendor terms not met equal LIBOR plus	4.50%
Inventory Financing Facility [Member]
Accounts Payable And Accrued Expenses [Line Items]
Accounts payable-inventory financing facility	$ 356,930,000
Inventory financing facility maximum borrowing capacity	$ 500,000,000
Inventory financing facility, interest accrual basis, stated vendor term	60 days
Imputed interest on inventory financing facility	$ 13,076,000	$ 10,801,000	$ 10,593,000

Debt, Finance Leases and Othe_3

Debt, Finance Leases and Other Financing Obligations - Long-Term Debt (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Long-term debt
Finance leases and other financing obligations	$ 2,267,000	$ 3,822,000
Total	438,686,000	859,364,000
Less: current portion of long-term debt	(1,105,000)	(1,691,000)
Long-term debt	437,581,000	857,673,000
ABL Facility [Member]
Long-term debt
Revolving credit facility	140,000,000	570,706,000
Convertible Senior Notes due 2025 [Member]
Long-term debt
Convertible senior notes due 2025	$ 296,419,000	$ 284,836,000

Debt, Finance Leases and Othe_4

Debt, Finance Leases and Other Financing Obligations - Additional Information (Detail)	Aug. 30, 2019USD ($)	Aug. 15, 2019USD ($)	Dec. 31, 2020USD ($)sharesd$ / shares	Dec. 31, 2019USD ($)	Aug. 23, 2019USD ($)
Debt Instrument [Line Items]
Payments to convertible note hedge transaction				$ 66,325,000
Proceeds from sale of warrants				34,440,000
Convertible Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Aggregate principal amount of convertible senior notes, issued amount		$ 300,000,000	$ 350,000,000	350,000,000
Convertible senior notes, maturity date		Feb. 15, 2025
Additional aggregate principal amount of notes issued					$ 50,000,000
Convertible senior notes, interest rate		0.75%	0.75%
Convertible senior notes, payable term			payable semiannually, in arrears, on February 15th and August 15th of each year.
Number of trading days | d			20
Number of consecutive trading days | d			30
Percentage of last reported sale price to conversion price on each applicable trading day			130.00%
Principal amount per note used in conversion rate			$ 1,000
Debt Conversion, initial conversion rate | shares			14.6376
Conversion price per share | $ / shares			$ 68.32
Repurchase price as percentage of principal amount			100.00%
Shares issuable upon conversion of debt | shares			6,788,208
Debt instrument, redemption price, percentage of principal amount redeemed			100.00%
Convertible senior notes, remaining accretion period of debt discount and issuance cost			4 years 1 month 15 days
Convertible senior notes, effective interest rate			4.325%
Conversion price per share | $ / shares			$ 68.32
Convertible note hedge expiration date			Feb. 15, 2025
Payments to convertible note hedge transaction			$ 66,325,000
Warrants sold to purchase of additional common stock | shares			5,123,160
Warrant price per share to purchase additional common stock | $ / shares			$ 103.12
Warrants expiration date			May 15, 2025
Proceeds from sale of warrants			$ 34,440,000
Convertible Senior Notes due 2025 [Member] | Scenario One [Member]
Debt Instrument [Line Items]
Number of trading days | d			20
Number of consecutive trading days | d			30
Percentage of last reported sale price to conversion price on each applicable trading day			130.00%
Convertible Senior Notes due 2025 [Member] | Scenario Two [Member]
Debt Instrument [Line Items]
Number of consecutive trading days | d			5
Percentage of last reported sale price to conversion price on each applicable trading day			98.00%
Measurement period			5 days
Convertible Senior Notes due 2025 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Option to purchase common stock, shares | shares			5,123,160
ABL Facility [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity	$ 1,200,000,000
Line of credit maturity date	Aug. 30, 2024
Amount of facility permitted by qualified receivables			$ 1,200,000,000
Line of credit outstanding amount			$ 140,000,000	$ 570,706,000
Applicable floating interest rate			1.40%
Commitment on the unused portion of the facility			0.25%
Weighted average amount outstanding borrowings			$ 339,474,000
Interest expense			$ 14,541,000
ABL Facility [Member] | LIBOR Rate [Member]
Debt Instrument [Line Items]
Interest rate description			LIBOR rate plus a pre-determined spread of 1.25% to 1.50%.
ABL Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Credit facility, increase in amount available for borrowing	$ 500,000,000
Participation fee on letter of credit			1.50%
ABL Facility [Member] | Maximum [Member] | LIBOR Rate [Member]
Debt Instrument [Line Items]
Pre-determined spread			1.50%
ABL Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Participation fee on letter of credit			1.25%
ABL Facility [Member] | Minimum [Member] | LIBOR Rate [Member]
Debt Instrument [Line Items]
Pre-determined spread			1.25%
ABL Facility [Member] | Foreign Currency Borrowings [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity	$ 150,000,000

Debt, Finance Leases and Othe_5

Debt, Finance Leases and Other Financing Obligations - Schedule of Convertible Senior Notes Balances (Detail) - Convertible Senior Notes due 2025 [Member] - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Aug. 15, 2019
Liability:
Principal	$ 350,000,000	$ 350,000,000	$ 300,000,000
Less: debt discount and issuance costs, net of accumulated accretion	(53,581,000)	(65,164,000)
Net carrying amount	296,419,000	284,836,000
Equity, net of deferred tax	$ 44,731,000	$ 44,731,000

Debt, Finance Leases and Othe_6

Debt, Finance Leases and Other Financing Obligations - Summary of Interest Expense Components Resulting From Notes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Amortization of debt discount	$ 16,217	$ 6,652
Convertible Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Contractual coupon interest	2,625	984
Amortization of debt discount	10,226	3,728
Amortization of debt issuance costs	$ 1,359	$ 479

Leases - Additional Information

Leases - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Lessee Lease Description [Line Items]
Operating lease, existence of option to extend	true
Operating lease, option to extend lease terms, description	Operating lease payments include $13.4 million related to options to extend lease terms that are reasonably certain of being exercised
Operating lease payments	$ 95,714
Options to Extend Lease Terms [Member]
Lessee Lease Description [Line Items]
Operating lease payments	$ 13,400
Minimum [Member]
Lessee Lease Description [Line Items]
Operating lease renewal term	1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Operating lease renewal term	5 years

Leases - Schedule of Financial

Leases - Schedule of Financial Statement Classification of Lease Balances With Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Lessee Lease Description [Line Items]
Total lease assets	$ 81,521	$ 77,981
Total lease liabilities	88,307	83,755
Other Assets [Member]
Lessee Lease Description [Line Items]
Operating lease assets	79,418	74,684
Property and equipment [Member]
Lessee Lease Description [Line Items]
Finance lease assets	2,103	3,297
Accrued expenses and other current liabilities [Member]
Lessee Lease Description [Line Items]
Operating lease liabilities	20,848	19,648
Current portion of long-term debt [Member]
Lessee Lease Description [Line Items]
Finance lease liabilities	1,105	1,691
Other liabilities [Member]
Lessee Lease Description [Line Items]
Operating lease liabilities	65,192	60,285
Long-term debt [Member]
Lessee Lease Description [Line Items]
Finance lease liabilities	$ 1,162	$ 2,131

Leases - Schedule of Financia_2

Leases - Schedule of Financial Statement Classification of Lease Balances With Consolidated Balance Sheet (Parenthetical) (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Property and equipment [Member]
Lessee Lease Description [Line Items]
Finance lease assets, accumulated amortization	$ 2,162,000	$ 861,000

Leases - Schedule of Financia_3

Leases - Schedule of Financial Statement Classification of Lease Balances With Consolidated Statement of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lessee Lease Description [Line Items]
Total lease cost	$ 27,323	$ 22,364
Selling and Administrative Expenses [Member]
Lessee Lease Description [Line Items]
Operating lease cost	25,918	21,393
Amortization of leased assets	1,301	861
Interest Expense, Net [Member]
Lessee Lease Description [Line Items]
Interest on lease liabilities	$ 104	$ 110

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments Under Non-cancelable Leases (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Operating Lease
2021	$ 23,144
2022	19,898
2023	14,104
2024	8,958
2025	7,061
After 2025	22,549
Total lease payments	95,714
Less: Interest	(9,674)
Present value of lease liabilities	$ 86,040
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesMember
Finance Lease
2021	$ 1,114
2022	682
2023	476
2024	45
Total lease payments	2,317
Less: Interest	(50)
Present value of lease liabilities	2,267
Total
2021	24,258
2022	20,580
2023	14,580
2024	9,003
2025	7,061
After 2025	22,549
Total lease payments	98,031
Less: Interest	(9,724)
Present value of lease liabilities	$ 88,307

Leases - Schedule of Weighted A

Leases - Schedule of Weighted Average Remaining Term and Discount Rates (Detail)	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating leases, Weighted average remaining lease term (years)	6 years 3 days	6 years 10 days
Finance leases, Weighted average remaining lease term (years)	2 years 4 months 13 days	2 years 11 months 1 day
Operating leases, Weighted average discount rate	3.35%	3.62%
Finance leases, Weighted average discount rate	3.27%	3.65%

Leases - Schedule of Cash Flows

Leases - Schedule of Cash Flows Associated With the Company's Leasing Activities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 25,849	$ 20,928
Leased assets obtained in exchange for new operating lease liabilities	$ 25,583	$ 10,460

Leases - Schedule of Cash Flo_2

Leases - Schedule of Cash Flows Associated With the Company's Leasing Activities (Parenthetical) (Detail)	Dec. 31, 2020USD ($)
PCM [Member]
Business Acquisition [Line Items]
Operating lease assets acquired	$ 17,951,000

Stock-Based Compensation - Pre-

Stock-Based Compensation - Pre-tax Amounts by Operating Segment for Stock-Based Compensation (Detail) - Restricted Stock Units (RSUs) [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to restricted stock units (RSUs)	$ 17,727	$ 16,011	$ 15,355
Selling and Administrative Expenses [Member] | North America Segment [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to restricted stock units (RSUs)	13,151	12,055	11,697
Selling and Administrative Expenses [Member] | EMEA Segment [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to restricted stock units (RSUs)	3,953	3,437	3,170
Selling and Administrative Expenses [Member] | APAC Segment [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to restricted stock units (RSUs)	$ 623	$ 519	$ 488

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of share based compensation under 2020 Omnibus Plan	The Company previously adopted the Amended Insight Enterprises, Inc. 2007 Omnibus Plan (the “Prior Plan”).
Maximum number of authorized shares	2,571,000
Number of shares of stock available for grant	2,491,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation cost related to RSU's not yet recognized	$ 27,413,000
Weighted average number of years for recognition of outstanding nonvested RSUs	1 year 3 months 7 days
Shares withheld to cover taxes	101,159	115,831	88,638
Payments for teammates' tax obligations to taxing authorities	$ 5,964,000	$ 6,572,000	$ 3,230,000
2020 Omnibus Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of share based compensation under 2020 Omnibus Plan	On April 3, 2020, our Board of Directors adopted and approved the new Insight Enterprises, Inc. 2020 Omnibus Plan (the “Plan”), subject to stockholder approval.  The Plan was approved by our stockholders at our 2020 annual meeting on May 20, 2020 and, unless sooner terminated, will remain in place until May 30, 2030.

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Restricted Stock Units Activity (Detail) - Restricted Stock Units (RSUs) [Member] - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested Number, Beginning balance	923,400
Number, Granted	401,805
Number, Vested, including shares withheld to cover taxes	(385,216)
Number, Forfeited	(76,271)
Nonvested Number, Ending balance	863,718	923,400
Nonvested Weighted Average Grant Date Fair Value, Beginning balance	$ 45.58
Weighted Average Grant Date Fair Value, Granted	59.31
Weighted Average Grant Date Fair Value, Vested, including shares withheld to cover taxes	42.60
Weighted Average Grant Date Fair Value, Forfeited	51.60
Nonvested Weighted Average Grant Date Fair Value, Ending balance	$ 52.77	$ 45.58
Fair Value, Vested, including shares withheld to cover taxes	$ 16,410,202	$ 24,837,997	$ 14,302,223
Fair Value, Nonvested at end of period	$ 65,720,303

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Restricted Stock Units Activity (Parenthetical) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing stock price	$ 76.09
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value for vested shares of RSUs	$ 16,410,202	$ 24,837,997	$ 14,302,223

Income Taxes - Income Tax Expen

Income Taxes - Income Tax Expense (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
U.S. Federal									$ 38,732	$ 20,254	$ 18,334
U.S. State and local									8,203	5,457	3,218
Foreign									22,123	19,180	17,547
Total current income tax expense									69,058	44,891	39,099
Deferred:
U.S. Federal									(10,048)	9,180	8,123
U.S. State and local									(1,779)	1,210	1,142
Foreign									(1,419)	(2,972)	(139)
Total deferred income tax expense									(13,246)	7,418	9,126
Income tax expense	$ 18,527	$ 12,160	$ 16,486	$ 8,639	$ 12,627	$ 10,134	$ 17,438	$ 12,110	$ 55,812	$ 52,309	$ 48,225

Income Taxes - Earnings Before

Income Taxes - Earnings Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
United States									$ 154,788	$ 142,410	$ 145,907
Foreign									73,664	69,306	65,995
Earnings before income taxes	$ 71,915	$ 51,066	$ 62,871	$ 42,600	$ 55,577	$ 37,266	$ 67,436	$ 51,437	$ 228,452	$ 211,716	$ 211,902

Income Taxes - Schedule Reconci

Income Taxes - Schedule Reconciles Difference between U.S. Federal Income Taxes at U.S. Statutory Rate and Our Income Tax Expense (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Statutory federal income tax rate, Amount									$ 47,975	$ 44,460	$ 44,499
State income tax expense, net of federal income tax benefit									6,280	7,239	6,767
Audits and adjustments, net									662	2,556	2,659
Change in valuation allowances									476	(2,739)	60
Foreign income taxed at different rates									3,825	4,024	2,639
Effects of U.S. tax reform											(5,594)
Research and development credits									(1,858)	(5,438)	(4,132)
Other, net									(1,548)	2,207	1,327
Income tax expense	$ 18,527	$ 12,160	$ 16,486	$ 8,639	$ 12,627	$ 10,134	$ 17,438	$ 12,110	$ 55,812	$ 52,309	$ 48,225
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory federal income tax rate									21.00%	21.00%	21.00%
State income tax expense, net of federal income tax benefit, Rate									2.70%	3.40%	3.20%
Audits and adjustments, net, Rate									0.30%	1.20%	1.30%
Change in valuation allowances, Rate									0.20%	(1.30%)
Foreign income taxed at different rates, Rate									1.70%	1.90%	1.20%
Effects of U.S. tax reform											(2.70%)
Research and development credits, Rate									(0.80%)	(2.60%)	(1.90%)
Other, net, Rate									(0.70%)	1.10%	0.70%
Effective tax rate									24.40%	24.70%	22.80%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax [Line Items]
Income tax benefit from the remeasurement of U.S.deferred income taxes											$ 5,600,000
Income tax benefit reflected in tax rate reconciliation	$ (18,527,000)	$ (12,160,000)	$ (16,486,000)	$ (8,639,000)	$ (12,627,000)	$ (10,134,000)	$ (17,438,000)	$ (12,110,000)	$ (55,812,000)	$ (52,309,000)	$ (48,225,000)
Valuation allowances	40,098,000				38,247,000				40,098,000	38,247,000
Unrecognized tax benefits	10,546,000				9,736,000				10,546,000	9,736,000
Unrecognized tax benefits, interest on income taxes accrued	749,000				$ 442,000				$ 749,000	$ 442,000
Period during which examination phase of tax audits may conclude, description									Although the timing of the resolutions and/or closures of audits is highly uncertain, it is reasonably possible that the examination phase of these audits may be concluded within the next 12 months which could significantly increase or decrease the balance of our gross unrecognized tax benefits.
Period during which federal income tax returns remain open to examination									2015
Statute of limitations for tax examination, Minimum									3 years
Statute of limitations for tax examination, Maximum									10 years
Earliest Tax Year [Member]
Income Tax [Line Items]
Open tax year									2014
Latest Tax Year [Member]
Income Tax [Line Items]
Open tax year									2018
United States [Member]
Income Tax [Line Items]
Operating loss expiration year									2021
Operating loss expiration year									2039
Foreign [Member]
Income Tax [Line Items]
Net operating loss carry forward	$ 100,070,000								$ 100,070,000
Operating loss expiration year									2022
Operating loss expiration year									2027
CARES Act [Member]
Income Tax [Line Items]
Income tax benefit reflected in tax rate reconciliation									$ 1,712,000

Income Taxes - Significant Comp

Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating losses	$ 27,453,000	$ 27,328,000
Foreign tax credits	16,027,000	16,091,000
Other	25,786,000	20,153,000
Gross deferred tax assets	69,266,000	63,572,000
Valuation allowances	(40,098,000)	(38,247,000)
Total deferred tax assets	29,168,000	25,325,000
Deferred tax liabilities:
Goodwill and other intangibles	(48,831,000)	(48,279,000)
Property and equipment	(6,715,000)	(12,702,000)
Other	(2,540,000)	(5,406,000)
Total deferred tax liabilities	(58,086,000)	(66,387,000)
Net deferred tax liabilities	(28,918,000)	$ (41,062,000)
Net deferred tax assets	$ 28,918,000

Income Taxes - Net Non-Current

Income Taxes - Net Non-Current Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred Tax Assets And Liabilities [Line Items]
Net non-current deferred tax liabilities	$ (33,209)	$ (44,633)
Net deferred tax liabilities	(28,918)	(41,062)
Other Assets [Member]
Deferred Tax Assets And Liabilities [Line Items]
Net non-current deferred tax assets	$ 4,291	$ 3,571

Market Risk Management - Additi

Market Risk Management - Additional Information (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Aug. 15, 2019
Convertible Senior Notes due 2025 [Member]
Line Of Credit Facility [Line Items]
Debt outstanding	$ 296,419,000	$ 284,836,000
Interest rate	0.75%		0.75%
Fair market value of convertible senior notes	$ 454,790,000
ABL Facility [Member]
Line Of Credit Facility [Line Items]
Debt outstanding	$ 140,000,000	$ 570,706,000
Interest rate	1.40%

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Compensation Related Costs [Abstract]
Discretionary match contribution to defined contribution plan provided to participants-U.S. teammates	50.00%
Maximum pre-tax contributions of compensation per pay period eligible for match- U.S. teammates	6.00%
Contribution expense	$ 11,974,000	$ 19,126,000	$ 15,216,000

Share Repurchase Programs - Add

Share Repurchase Programs - Additional Information (Detail) - USD ($)	Dec. 31, 2020	Feb. 29, 2020	Dec. 31, 2019	Feb. 28, 2018
Schedule Of Share Repurchase Programs [Line Items]
Common stock repurchase program, authorized amount		$ 50,000,000	$ 0	$ 50,000,000
February 2020 Share Repurchase Plan [Member]
Schedule Of Share Repurchase Programs [Line Items]
Common stock repurchase program, authorized remaining amount	$ 25,000,000
February 2018 Share Repurchase Plan [Member]
Schedule Of Share Repurchase Programs [Line Items]
Common stock repurchase program, authorized remaining amount	$ 0

Share Repurchase Programs - Sum

Share Repurchase Programs - Summary of Shares of Common Stock Repurchased Under Repurchase Programs (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended			36 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 30, 2020
Equity [Abstract]
Repurchase program, total number of shares purchased	445,000	541,000	641,000	1,627,000
Repurchase program, average price paid per share	$ 56.20	$ 51.56	$ 34.42
Repurchase program, approximate dollar value of shares purchased	$ 25,000	$ 27,899	$ 22,069	$ 74,968

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Number of months of salary paid as severance	from three to twenty-four months

Supplemental Financial Inform_3

Supplemental Financial Information - Summary of Additions and Deductions Related to Allowances for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Allowance for doubtful accounts receivable, Beginning Balance	$ 10,762	$ 10,462	$ 10,158
Allowance for doubtful accounts receivable, Additions	10,163	5,079	4,776
Allowance for doubtful accounts receivable, Deductions	(5,819)	(4,779)	(4,472)
Allowance for doubtful accounts receivable, Ending Balance	$ 15,106	$ 10,762	$ 10,462

Cash Flows - Schedule of Cash P

Cash Flows - Schedule of Cash Payments for Interest on Indebtedness and Cash Payments for Taxes on Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental disclosures of cash flow information:
Cash paid during the year for interest	$ 16,605	$ 6,246	$ 10,155
Cash paid during the year for income taxes, net of refunds	$ 62,545	$ 42,484	$ 31,218

Segment and Geographic Inform_3

Segment and Geographic Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020Segment
Segment Reporting [Abstract]
Number of operating segments	3
Description of major customers net sales	None of our clients exceeded ten percent of consolidated net sales in 2020, 2019 or 2018.

Segment and Geographic Inform_4

Segment and Geographic Information - Net Sales by Offering for North America, EMEA and APAC (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue from External Customer [Line Items]
Revenues from external customers	$ 2,291,315	$ 1,936,478	$ 1,968,735	$ 2,144,051	$ 2,297,156	$ 1,912,547	$ 1,836,021	$ 1,685,466	$ 8,340,579	$ 7,731,190	$ 7,080,136
North America Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									6,615,032	6,024,305	5,362,981
EMEA Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									1,555,225	1,526,644	1,530,241
APAC Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									170,322	180,241	186,914
Hardware Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									5,068,073	4,615,421	4,293,351
Hardware Net Sales [Member] | North America Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									4,418,295	3,957,507	3,610,356
Hardware Net Sales [Member] | EMEA Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									617,825	622,949	653,499
Hardware Net Sales [Member] | APAC Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									31,953	34,965	29,496
Software Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									2,104,082	2,116,700	1,956,587
Software Net Sales [Member] | North America Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									1,260,757	1,269,983	1,112,715
Software Net Sales [Member] | EMEA Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									760,562	753,729	736,509
Software Net Sales [Member] | APAC Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									82,763	92,988	107,363
Services Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									1,168,424	999,069	830,198
Services Net Sales [Member] | North America Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									935,980	796,815	639,910
Services Net Sales [Member] | EMEA Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									176,838	149,966	140,233
Services Net Sales [Member] | APAC Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									$ 55,606	$ 52,288	$ 50,055

Segment and Geographic Inform_5

Segment and Geographic Information - Financial Information about Reportable Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total net sales	$ 2,291,315	$ 1,936,478	$ 1,968,735	$ 2,144,051	$ 2,297,156	$ 1,912,547	$ 1,836,021	$ 1,685,466	$ 8,340,579	$ 7,731,190	$ 7,080,136
Total costs of goods sold	1,948,661	1,628,915	1,644,346	1,818,715	1,959,174	1,636,352	1,560,572	1,436,994	7,040,637	6,593,092	6,086,418
Gross profit	342,654	307,563	324,389	325,336	337,982	276,195	275,449	248,472	1,299,942	1,138,098	993,718
Operating expenses:
Selling and administrative expenses	257,167	245,155	242,580	268,863	266,970	223,215	199,489	191,063	1,013,765	880,737	756,529
Severance and restructuring expenses	2,432	808	7,010	2,144	1,713	2,662	680	370	12,394	5,425	3,424
Acquisition-related expenses	13	118	611	1,466	2,283	5,896	3,163		2,208	11,342	282
Earnings from operations	$ 83,042	$ 61,482	$ 74,188	$ 52,863	$ 67,016	$ 44,422	$ 72,117	$ 57,039	271,575	240,594	233,483
Products [Member]
Segment Reporting Information [Line Items]
Total net sales									7,172,155	6,732,121	6,249,938
Total costs of goods sold									6,497,001	6,125,360	5,711,400
Services [Member]
Segment Reporting Information [Line Items]
Total net sales									1,168,424	999,069	830,198
Total costs of goods sold									543,636	467,732	375,018
North America Segment [Member]
Segment Reporting Information [Line Items]
Total net sales									6,615,032	6,024,305	5,362,981
Total costs of goods sold									5,593,644	5,153,191	4,630,286
Gross profit									1,021,388	871,114	732,695
Operating expenses:
Selling and administrative expenses									790,913	664,374	545,091
Severance and restructuring expenses									9,273	4,946	1,617
Acquisition-related expenses									2,004	11,342	282
Earnings from operations									219,198	190,452	185,705
North America Segment [Member] | Products [Member]
Segment Reporting Information [Line Items]
Total net sales									5,679,052	5,227,490	4,723,071
Total costs of goods sold									5,130,851	4,748,608	4,313,070
North America Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Total net sales									935,980	796,815	639,910
Total costs of goods sold									462,793	404,583	317,216
EMEA Segment [Member]
Segment Reporting Information [Line Items]
Total net sales									1,555,225	1,526,644	1,530,241
Total costs of goods sold									1,319,179	1,299,561	1,308,774
Gross profit									236,046	227,083	221,467
Operating expenses:
Selling and administrative expenses									192,485	186,957	182,470
Severance and restructuring expenses									2,989	334	1,677
Acquisition-related expenses									204
Earnings from operations									40,368	39,792	37,320
EMEA Segment [Member] | Products [Member]
Segment Reporting Information [Line Items]
Total net sales									1,378,387	1,376,678	1,390,008
Total costs of goods sold									1,261,236	1,258,974	1,273,422
EMEA Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Total net sales									176,838	149,966	140,233
Total costs of goods sold									57,943	40,587	35,352
APAC Segment [Member]
Segment Reporting Information [Line Items]
Total net sales									170,322	180,241	186,914
Total costs of goods sold									127,814	140,340	147,358
Gross profit									42,508	39,901	39,556
Operating expenses:
Selling and administrative expenses									30,367	29,406	28,968
Severance and restructuring expenses									132	145	130
Earnings from operations									12,009	10,350	10,458
APAC Segment [Member] | Products [Member]
Segment Reporting Information [Line Items]
Total net sales									114,716	127,953	136,859
Total costs of goods sold									104,914	117,778	124,908
APAC Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Total net sales									55,606	52,288	50,055
Total costs of goods sold									$ 22,900	$ 22,562	$ 22,450

Segment and Geographic Inform_6

Segment and Geographic Information - Summary of Total Assets by Reportable Operating Segment (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 4,310,732	$ 4,178,179
Operating Segments [Member] | North America Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	4,837,155	3,814,408
Operating Segments [Member] | EMEA Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	735,771	699,856
Operating Segments [Member] | APAC Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	155,761	123,349
Intersegment Eliminations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ (1,417,955)	$ (459,434)

Segment and Geographic Inform_7

Segment and Geographic Information - Summary of Geographic Net Sales and Long-Lived Assets (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 2,291,315	$ 1,936,478	$ 1,968,735	$ 2,144,051	$ 2,297,156	$ 1,912,547	$ 1,836,021	$ 1,685,466	$ 8,340,579	$ 7,731,190	$ 7,080,136
Total long-lived assets	146,016				130,907				146,016	130,907
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									6,237,901	5,696,422	5,100,456
Total long-lived assets	110,161				103,678				110,161	103,678
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									805,401	776,051	843,145
Total long-lived assets	11,042				13,448				11,042	13,448
Other Foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,297,277	1,258,717	$ 1,136,535
Total long-lived assets	$ 24,813				$ 13,781				$ 24,813	$ 13,781

Segment and Geographic Inform_8

Segment and Geographic Information - Pre-Tax Depreciation and Amortization by Operating Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Depreciation and amortization of property and equipment	$ 28,025	$ 22,538	$ 21,721
Amortization of intangible assets	37,535	23,671	15,737
Depreciation and amortization, total	65,560	46,209	37,458
North America Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization of property and equipment	22,396	17,827	17,164
Amortization of intangible assets	34,990	22,382	14,791
EMEA Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization of property and equipment	5,073	4,166	4,058
Amortization of intangible assets	2,088	828	285
APAC Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization of property and equipment	556	545	499
Amortization of intangible assets	$ 457	$ 461	$ 661

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail)	Aug. 30, 2019USD ($)OfficeTeammate	Aug. 01, 2018USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Business Acquisition [Line Items]
Goodwill balance due to adjustment in purchase price allocation				$ 5,034,000
Goodwill			$ 415,149,000	429,368,000	$ 415,149,000
Acquisitions, net of cash and cash equivalents acquired				6,405,000	664,287,000	$ 74,938,000
North America Segment [Member]
Business Acquisition [Line Items]
Goodwill balance due to adjustment in purchase price allocation				5,711,000
Goodwill			396,818,000	$ 403,476,000	396,818,000
PCM [Member]
Business Acquisition [Line Items]
Cash purchase price	$ 745,562,000
Acquisition, percentage of issued and outstanding shares acquired	100.00%
Cash and cash equivalents acquired	$ 84,637,000
Estimated fair value of net assets acquired	407,031,000
Identifiable intangible assets	191,370,000
Goodwill	253,894,000
Tax deductible goodwill	0
Acquisitions, net of cash and cash equivalents acquired	660,925,000
PCM [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Goodwill balance due to adjustment in purchase price allocation			$ 56,700,000
Identifiable intangible assets	$ 178,900,000
PCM [Member] | Minimum [Member]
Business Acquisition [Line Items]
Number of teammates | Teammate	4,000
PCM [Member] | North America and The United Kingdom [Member]
Business Acquisition [Line Items]
Number of office locations | Office	40
Cardinal Solutions Group, Inc [Member]
Business Acquisition [Line Items]
Acquisition, percentage of issued and outstanding shares acquired		100.00%
Goodwill balance due to adjustment in purchase price allocation		$ 3,400,000
Acquisitions, net of cash and cash equivalents acquired		78,400,000
Cardinal Solutions Group, Inc [Member] | North America Segment [Member]
Business Acquisition [Line Items]
Goodwill balance due to adjustment in purchase price allocation					$ 400,000
Identifiable intangible assets		27,540,000
Goodwill		36,040,000
Net assets acquired		$ 42,360,000
Cardinal Solutions Group, Inc [Member] | North America Segment [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Estimated useful life of acquired intangible assets		10 years

Acquisitions - Summary of Purch

Acquisitions - Summary of Purchase Price and Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($)	Aug. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Purchase price net of cash and cash equivalents acquired		$ 6,405,000	$ 664,287,000	$ 74,938,000
Fair value of net assets acquired:
Excess purchase price over fair value of net assets acquired ("goodwill")		$ 429,368,000	$ 415,149,000
PCM [Member]
Business Acquisition [Line Items]
Purchase price net of cash and cash equivalents acquired	$ 660,925,000
Fair value of net assets acquired:
Current assets	531,941,000
Identifiable intangible assets - see description below	191,370,000
Property and equipment	91,213,000
Other assets	32,699,000
Current liabilities	(369,183,000)
Long-term liabilities, including deferred taxes	(71,009,000)
Total fair value of net assets acquired	407,031,000
Excess purchase price over fair value of net assets acquired ("goodwill")	$ 253,894,000

Acquisitions - Estimated Useful

Acquisitions - Estimated Useful Lives of Identifiable Intangibles (Detail) - PCM [Member]	12 Months Ended
	Dec. 31, 2020
Customer Relationships [Member] | Minimum [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Economic Life	10 years
Customer Relationships [Member] | Maximum [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Economic Life	12 years
Trade Name [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Economic Life	1 year
Non-compete Agreements [Member] | Minimum [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Economic Life	2 years
Non-compete Agreements [Member] | Maximum [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Economic Life	3 years

Acquisitions - Summary of Pro F

Acquisitions - Summary of Pro Forma Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Net sales, As reported	$ 2,291,315	$ 1,936,478	$ 1,968,735	$ 2,144,051	$ 2,297,156	$ 1,912,547	$ 1,836,021	$ 1,685,466	$ 8,340,579	$ 7,731,190	$ 7,080,136
Net earnings, As reported	$ 53,388	$ 38,906	$ 46,385	$ 33,961	$ 42,950	$ 27,132	$ 49,998	$ 39,327	$ 172,640	$ 159,407	$ 163,677
Diluted earnings per share, As reported	$ 1.50	$ 1.10	$ 1.32	$ 0.95	$ 1.20	$ 0.76	$ 1.38	$ 1.09	$ 4.87	$ 4.43	$ 4.55
PCM [Member]
Business Acquisition [Line Items]
Net sales, As reported										$ 7,731,190	$ 7,080,136
Net sales, Pro forma										9,207,512	9,241,183
Net earnings, As reported										159,407	163,677
Net earnings, Pro forma										$ 171,102	$ 167,499
Diluted earnings per share, As reported										$ 4.43	$ 4.55
Diluted earnings per share, Pro forma										$ 4.76	$ 4.65

Selected Quarterly Financial _3

Selected Quarterly Financial Information - Consolidated Quarterly Financial Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Revenues from external customers	$ 2,291,315	$ 1,936,478	$ 1,968,735	$ 2,144,051	$ 2,297,156	$ 1,912,547	$ 1,836,021	$ 1,685,466	$ 8,340,579	$ 7,731,190	$ 7,080,136
Costs of goods sold	1,948,661	1,628,915	1,644,346	1,818,715	1,959,174	1,636,352	1,560,572	1,436,994	7,040,637	6,593,092	6,086,418
Gross profit	342,654	307,563	324,389	325,336	337,982	276,195	275,449	248,472	1,299,942	1,138,098	993,718
Operating expenses:
Selling and administrative expenses	257,167	245,155	242,580	268,863	266,970	223,215	199,489	191,063	1,013,765	880,737	756,529
Severance and restructuring expenses	2,432	808	7,010	2,144	1,713	2,662	680	370	12,394	5,425	3,424
Acquisition-related expenses	13	118	611	1,466	2,283	5,896	3,163		2,208	11,342	282
Earnings from operations	83,042	61,482	74,188	52,863	67,016	44,422	72,117	57,039	271,575	240,594	233,483
Non-operating (income) expense:
Interest expense, net	10,434	9,115	10,219	11,826	11,897	7,694	4,335	4,552	41,594	28,478	21,737
Other expense (income), net	693	1,301	1,098	(1,563)	(458)	(538)	346	1,050	1,529	400	(156)
Earnings before income taxes	71,915	51,066	62,871	42,600	55,577	37,266	67,436	51,437	228,452	211,716	211,902
Income tax expense	18,527	12,160	16,486	8,639	12,627	10,134	17,438	12,110	55,812	52,309	48,225
Net earnings	$ 53,388	$ 38,906	$ 46,385	$ 33,961	$ 42,950	$ 27,132	$ 49,998	$ 39,327	$ 172,640	$ 159,407	$ 163,677
Net earnings per share:
Basic	$ 1.52	$ 1.11	$ 1.32	$ 0.96	$ 1.22	$ 0.76	$ 1.40	$ 1.10	$ 4.92	$ 4.49	$ 4.60
Diluted	$ 1.50	$ 1.10	$ 1.32	$ 0.95	$ 1.20	$ 0.76	$ 1.38	$ 1.09	$ 4.87	$ 4.43	$ 4.55
Shares used in per share calculations:
Basic	35,098	35,077	35,060	35,233	35,259	35,512	35,772	35,609	35,117	35,538	35,586
Diluted	35,523	35,348	35,260	35,646	35,755	35,868	36,111	36,103	35,444	35,959	36,009

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail)	1 Months Ended	12 Months Ended
	Jan. 31, 2021USD ($)Property	Dec. 31, 2020USD ($)
Subsequent Event [Line Items]
Proceeds from sale of assets held for sale		$ 40,295,000
Subsequent Event [Member] | Arizona [Member]
Subsequent Event [Line Items]
Number of properties sold | Property	3
Proceeds from sale of assets held for sale	$ 27,211,000