Insight Enterprises (NSIT) 10-K 26 Feb 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Feb. 15, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	NSIT
Entity Registrant Name	INSIGHT ENTERPRISES INC
Entity Central Index Key	932,696
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 Common Stock, Shares Outstanding		35,836,320
Entity Public Float			$ 1,410,322,331

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 105,831	$ 202,882
Accounts receivable, net	1,814,560	1,436,742
Inventories	194,529	148,203
Inventories not available for sale	36,956	68,619
Other current assets	152,467	127,159
Total current assets	2,304,343	1,983,605
Property and equipment, net	75,252	70,910
Goodwill	131,431	62,645
Intangible assets, net	100,778	20,707
Deferred income taxes	17,064	52,347
Other assets	56,783	29,086
Total assets	2,685,651	2,219,300
Current liabilities:
Accounts payable-trade	899,075	1,070,259
Accounts payable-inventory financing facility	319,468	154,930
Accrued expenses and other current liabilities	175,860	151,895
Current portion of long-term debt	16,592	480
Deferred revenue	88,979	61,098
Total current liabilities	1,499,974	1,438,662
Long-term debt	296,576	40,251
Deferred income taxes	717	900
Other liabilities	44,915	26,044
Total liabilities	1,842,182	1,505,857
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; 35,829 and 35,484 shares issued and outstanding in 2017 and 2016, respectively	358	355
Additional paid-in capital	317,155	309,650
Retained earnings	550,220	459,537
Accumulated other comprehensive loss - foreign currency translation adjustments	(24,264)	(56,099)
Total stockholders' equity	843,469	713,443
Total liabilities and stockholders' equity	$ 2,685,651	$ 2,219,300

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
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	35,829,000	35,484,000
Common stock, shares outstanding	35,829,000	35,484,000

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net sales:
Products									$ 6,038,744	$ 4,997,263	$ 4,945,547
Services									664,879	488,252	427,543
Total net sales	$ 1,784,075	$ 1,757,973	$ 1,684,032	$ 1,477,543	$ 1,467,583	$ 1,392,716	$ 1,456,234	$ 1,168,982	6,703,623	5,485,515	5,373,090
Costs of goods sold:
Products									5,512,402	4,571,462	4,513,353
Services									272,651	170,951	143,405
Total costs of goods sold	1,551,192	1,531,892	1,432,653	1,269,316	1,276,614	1,210,908	1,247,017	1,007,874	5,785,053	4,742,413	4,656,758
Gross profit	232,883	226,081	251,379	208,227	190,969	181,808	209,217	161,108	918,570	743,102	716,332
Operating expenses:
Selling and administrative expenses	184,554	180,390	180,752	177,632	145,066	143,872	150,186	146,119	723,328	585,243	584,906
Severance and restructuring expenses	2,791	494	1,022	4,695	1,527	788	909	1,356	9,002	4,580	4,907
Loss on sale of foreign entity		3,646							3,646
Acquisition-related expenses		106	276	2,947	3,706	741			3,329	4,447
Earnings from operations	45,538	41,445	69,329	22,953	40,670	36,407	58,122	13,633	179,265	148,832	126,519
Non-operating (income) expense:
Interest income	(346)	(227)	(205)	(431)	(282)	(318)	(216)	(250)	(1,209)	(1,066)	(783)
Interest expense	5,360	5,555	4,326	3,933	2,271	2,517	1,992	1,848	19,174	8,628	7,224
Net foreign currency exchange loss (gain)	(117)	341	251	380	(520)	579	(153)	616	855	522	(393)
Other expense, net	367	339	326	315	311	352	359	268	1,347	1,290	1,295
Earnings before income taxes	40,274	35,437	64,631	18,756	38,890	33,277	56,140	11,151	159,098	139,458	119,176
Income tax expense	26,106	13,025	24,376	4,908	17,790	11,642	21,073	4,263	68,415	54,768	43,325
Net earnings	$ 14,168	$ 22,412	$ 40,255	$ 13,848	$ 21,100	$ 21,635	$ 35,067	$ 6,888	$ 90,683	$ 84,690	$ 75,851
Net earnings per share:
Basic	$ 0.40	$ 0.63	$ 1.13	$ 0.39	$ 0.59	$ 0.61	$ 0.96	$ 0.19	$ 2.54	$ 2.35	$ 2
Diluted	$ 0.39	$ 0.62	$ 1.11	$ 0.38	$ 0.59	$ 0.60	$ 0.96	$ 0.18	$ 2.50	$ 2.32	$ 1.98
Shares used in per share calculations:
Basic	35,809	35,787	35,765	35,602	35,479	35,474	36,380	37,075	35,741	36,102	37,984
Diluted	36,272	36,203	36,169	36,185	35,963	35,790	36,612	37,386	36,207	36,438	38,275

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net earnings	$ 90,683	$ 84,690	$ 75,851
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	31,835	(16,063)	(26,707)
Total comprehensive income	$ 122,518	$ 68,627	$ 49,144

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]
Beginning Balance at Dec. 31, 2014	$ 721,231	$ 401		$ 337,167	$ (13,329)	$ 396,992
Beginning Balance, Shares at Dec. 31, 2014		40,147
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Value	(2,265)	$ 3		(2,268)
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Shares		259
Stock-based compensation expense	8,922			8,922
Tax benefit from stock-based compensation	553			553
Repurchase of treasury stock, Amount	(91,843)		$ (91,843)
Repurchase of treasury stock, Shares			(3,300)
Retirement of treasury stock, Amount		$ (33)	$ 91,843	(27,688)		(64,122)
Retirement of treasury stock, Shares		(3,300)	3,300
Foreign currency translation adjustments, net of tax	(26,707)				(26,707)
Net earnings	75,851					75,851
Ending Balance at Dec. 31, 2015	685,742	$ 371		316,686	(40,036)	408,721
Ending Balance, Shares at Dec. 31, 2015		37,106
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Value	(2,219)	$ 3		(2,222)
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Shares		269
Stock-based compensation expense	11,058			11,058
Tax benefit from stock-based compensation	235			235
Repurchase of treasury stock, Amount	(50,000)		$ (50,000)
Repurchase of treasury stock, Shares			(1,891)
Retirement of treasury stock, Amount		$ (19)	$ 50,000	(16,107)		(33,874)
Retirement of treasury stock, Shares		(1,891)	1,891
Foreign currency translation adjustments, net of tax	(16,063)				(16,063)
Net earnings	84,690					84,690
Ending Balance at Dec. 31, 2016	713,443	$ 355		309,650	(56,099)	459,537
Ending Balance, Shares at Dec. 31, 2016		35,484
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Value	(5,318)	$ 3		(5,321)
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes, Shares		345
Stock-based compensation expense	12,826			12,826
Foreign currency translation adjustments, net of tax	31,835				31,835
Net earnings	90,683					90,683
Ending Balance at Dec. 31, 2017	$ 843,469	$ 358		$ 317,155	$ (24,264)	$ 550,220
Ending Balance, Shares at Dec. 31, 2017		35,829

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net earnings	$ 90,683,000	$ 84,690,000	$ 75,851,000
Adjustments to reconcile net earnings to net cash (used in) provided by operating activities:
Depreciation and amortization of property and equipment	25,787,000	27,493,000	26,649,000
Amortization of intangible assets	16,812,000	10,637,000	11,308,000
Non-cash real estate impairment			800,000
Provision for losses on accounts receivable	5,245,000	2,452,000	6,761,000
Write-downs of inventories	2,776,000	2,934,000	3,997,000
Write-off of property and equipment	418,000	0	535,000
Non-cash stock-based compensation	12,826,000	11,058,000	8,922,000
Deferred income taxes	19,139,000	10,517,000	5,174,000
Loss on sale of foreign entity	3,646,000
Gain on sale of real estate		(338,000)
Changes in assets and liabilities:
Increase in accounts receivable	(208,065,000)	(168,966,000)	(47,206,000)
Increase in inventories	(14,046,000)	(50,712,000)	(9,214,000)
Decrease (increase) in other assets	4,982,000	(50,130,000)	(26,714,000)
(Decrease) increase in accounts payable	(237,457,000)	193,582,000	113,594,000
(Decrease) increase in deferred revenue	(27,184,000)	10,633,000	2,927,000
(Decrease) increase in accrued expenses and other liabilities	(988,000)	12,278,000	7,718,000
Net cash (used in) provided by operating activities	(305,426,000)	96,128,000	181,102,000
Cash flows from investing activities:
Acquisitions, net of cash and cash equivalents acquired	(186,932,000)	(10,297,000)	(44,221,000)
Purchases of property and equipment	(19,230,000)	(12,266,000)	(13,416,000)
Proceeds from sale of foreign entity	1,517,000
Proceeds from sale of real estate, net		1,378,000
Net cash used in investing activities	(204,645,000)	(21,185,000)	(57,637,000)
Cash flows from financing activities:
Borrowings on senior revolving credit facility	1,151,216,000	772,218,000	686,410,000
Repayments on senior revolving credit facility	(1,033,716,000)	(772,218,000)	(686,410,000)
Borrowings on accounts receivable securitization financing facility	3,961,389,000	2,802,000,000	1,897,100,000
Repayments on accounts receivable securitization financing facility	(3,975,889,000)	(2,851,500,000)	(1,869,100,000)
Borrowings under Term Loan A	175,000,000
Repayments under Term Loan A	(8,750,000)
Repayments under other financing agreements	(5,636,000)	(1,309,000)	(543,000)
Payments on capital lease obligations	(1,089,000)	(445,000)	(223,000)
Net borrowings (repayments) under inventory financing facility	141,037,000	48,603,000	(16,454,000)
Payment of debt issuance costs	(1,123,000)	(3,360,000)
Payment of payroll taxes on stock-based compensation through shares withheld	(5,318,000)	(2,219,000)	(2,265,000)
Repurchases of common stock		(50,000,000)	(91,843,000)
Net cash provided by (used in) financing activities	397,121,000	(58,230,000)	(83,328,000)
Foreign currency exchange effect on cash and cash equivalent balances	15,899,000	(1,809,000)	(16,683,000)
(Decrease) increase in cash and cash equivalents	(97,051,000)	14,904,000	23,454,000
Cash and cash equivalents at beginning of year	202,882,000	187,978,000	164,524,000
Cash and cash equivalents at end of year	$ 105,831,000	$ 202,882,000	$ 187,978,000

Operations and Summary of Signi

Operations and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
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 are a Fortune 500 global information technology (“IT”) provider helping businesses of all sizes – from small and medium sized firms to worldwide enterprises, governments, schools and health care organizations – define, architect, implement and manage Intelligent Technology Solutions TM Operating Segment Geography North America United States 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. A discussion of changes in our classification of certain revenue streams during 2017, can be found in Note 20. Prior year results were reclassified to conform to the current year presentation. These reclassifications had no effect on consolidated total net sales. Acquisitions Effective September 26, 2017, we acquired Caase Group B.V. (referred to herein as, “Caase.com”), a Dutch cloud service provider, for a purchase price, net of cash acquired, of approximately $6,038,000, subject to a final working capital adjustment. The acquisition was funded using cash on hand. Effective January 6, 2017, we acquired Datalink Corporation (“Datalink”), a leading provider of IT services and enterprise data center solutions based in Eden Prairie, Minnesota, for a cash purchase price of $257,456,000, which included cash and cash equivalents acquired of $76,597,000. The acquisition was funded using cash on hand and borrowings under our revolving facility in the form of an incremental Term Loan A (“TLA”). Effective September 1, 2016, we acquired Ignia Pty Ltd (“Ignia”), a business technology consulting and managed services provider headquartered in Perth, Australia, with an additional office in Melbourne, for a cash purchase price, net of cash acquired, of approximately $10,804,000. The acquisition was funded using cash on hand. Effective October 1, 2015, we acquired BlueMetal Architects, Inc. (“BlueMetal”), an interactive design and technology architecture firm based in the Boston area with offices in Chicago and New York, for a cash purchase price, net of cash acquired, of approximately $44,221,000. The acquisition was funded using borrowings under our accounts receivable securitization financing facility. Our results of operations include the results of Caase.com, Datalink, Ignia and BlueMetal from their respective acquisition dates. (See Note 21 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. 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. 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 and Cash Equivalents 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. 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 Inventories not available for sale relate to product sales transactions in which we are warehousing the product and will be deploying the product to our clients’ designated locations subsequent to period-end. non-cancelable 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 Costs incurred to develop internal-use internal-use internal-use Reviews are regularly performed to determine whether facts and circumstances exist which indicate that the useful 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. We may first perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If it is concluded that this is the case, it is necessary to perform a quantitative goodwill impairment test. Otherwise, the goodwill impairment test is not required. The quantitative goodwill impairment review process compares the fair value of the reporting unit in which goodwill resides to its carrying value. The Company has three reporting units, which are the same as our operating segments. Multiple valuation techniques can be used to assess the fair value of the reporting unit. All of 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 intangible assets acquired in business combinations using the straight-line method over the following estimated economic lives of the intangible assets from the date of acquisition: Estimated Economic Customer relationships 2 –11 years Tradenames and Restrictive Covenant Agreements 9 months –3 years We regularly perform reviews to determine if facts and circumstances exist which indicate that the useful 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. Trade Credits Trade credit liabilities arise from aged unclaimed credit memos, duplicate payments, payments for returned product or overpayments made to us by our clients, and, to a lesser extent, from goods received by us from a partner for which we were never invoiced. Trade credit liabilities are included in accrued expenses and other current liabilities in our consolidated balance sheets. We derecognize the liability only if it has been extinguished, upon either (1) our payment of the liability to relieve our obligation or (2) our legal release from the related obligation, which is recorded as a reduction of costs of goods sold. Self-Insurance We are self-insured in the United States 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 paid-in Sales Recognition Sales are recognized when title and risk of loss are passed to the client, there is persuasive evidence of an arrangement for sale, delivery has occurred and/or services have been rendered, the sales price is fixed or determinable and collectibility is reasonably assured. Our standard sales terms are F.O.B. shipping point or equivalent, at which time title and risk of loss have passed to the client. However, because we either (i) have a general practice of covering client losses while products are in transit despite title and risk of loss contractually transferring at the point of shipment or (ii) have specifically stated F.O.B. destination contractual terms with the client, delivery is not deemed to have occurred until the point in time when the product is received by the client. We make provisions 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 when the product is received by the client. We recognize revenue on a gross basis as the principal in the transaction because we control the transaction as the primary obligor for product 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, we assume credit risk for the amounts invoiced, and we work closely with our clients to determine their hardware and software specifications. We record the freight we bill to our clients as net sales and the related freight costs we pay as costs of goods sold. We report sales net of any sales-based taxes assessed by governmental authorities that are imposed on and concurrent with sales transactions. Revenue is recognized from software sales when clients acquire the right to use or copy software under license, but in no case prior to the commencement of the term of the initial software license agreement, provided that all other revenue recognition criteria have been met (i.e., evidence of the arrangement exists, the fee is fixed or determinable and collectibility of the fee is probable). We sell certain third-party service contracts, software maintenance and cloud or software-as-a-service We recognize revenue for sales of services ratably over the time period over which the service will be provided if there is no discernible pattern of recognition of the cost to perform the service. Billings for such services that are made in advance of the related revenue recognized are recorded as deferred revenue and recognized as revenue ratably over the billing coverage period. Revenue from certain arrangements that allow for the use of a product or service over a period of time without taking possession of software are also accounted for ratably over the time period over which the service will be provided. We recognize revenue for professional services engagements that are on a time and materials basis based upon hours incurred as the services are performed and amounts are earned. Net sales for these services engagements are not a significant portion of our consolidated net sales. Additionally, we sell certain professional services contracts on a fixed fee basis. Revenues for fixed fee professional services contracts are recognized based on the ratio of costs incurred to total estimated costs. Net sales for these service contracts are not a significant portion of our consolidated net sales. In certain arrangements, we may provide a combination of hardware and software products and the provision of services. Services that are performed by us in conjunction with hardware and software sales that are completed in our facilities prior to shipment of the product are recognized upon delivery, when title passes to the client, for the hardware sale. Net sales of services that are performed at client locations are primarily service-only contracts and are recorded as sales when the services are performed. The total consideration for an arrangement with multiple deliverables is allocated to all deliverables that represent a separate unit of accounting using the relative selling price method. 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, 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 $53,227,000, $48,114,000 and $45,146,000 in 2017, 2016 and 2015, 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, 2017. We monitor our clients’ financial condition and do not require collateral. Sales to the U.S. federal government, which are diversified across multiple agencies and departments, collectively accounts for approximately 9% of our 2017 net sales. Excluding these sales to the federal government, we are not reliant on any one client. No single client accounted for more than 4% of our consolidated net sales in 2017. Supplier Risk Purchases from Microsoft accounted for approximately 26% of our aggregate purchases in 2017. No other partner accounted for more than 10% of purchases in 2017. Our top five partners as a group for 2017 were Microsoft, Cisco Systems, Tech Data (a distributor), Dell and HP Inc., and approximately 60% of our total purchases during 2017 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 $47,053,000, $37,565,000 and $33,568,000 was recorded in 2017, 2016 and 2015, respectively. These amounts were predominantly offset by partner funding earned pursuant to shared marketing expense programs recorded as a reduction of selling and administrative expenses, as discussed in “Partner Funding” above. 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, 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 non-operating Derivative Financial Instruments We enter into forward foreign exchange contracts to mitigate the risk of non-functional non-operating 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 We record uncertain tax positions on the basis of a two-step more-likely-than-not 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, 2017 2016 2015 Numerator: Net earnings $ 90,683 $ 84,690 $ 75,851 Denominator: Weighted-average shares used to compute basic EPS 35,741 36,102 37,984 Dilutive potential common shares due to dilutive RSUs, net of tax effect 466 336 291 Weighted-average shares used to compute diluted EPS 36,207 36,438 38,275 Net earnings per share: Basic $ 2.54 $ 2.35 $ 2.00 Diluted $ 2.50 $ 2.32 $ 1.98 In 2017, 2016 and 2015, approximately 40,000, 36,000 and 1,000, 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. Recently Issued Accounting Standards In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) No. 2017-04, . In November 2016, the FASB issued ASU No. 2016-18, beginning-of-period end-of-period In August 2016, the FASB issued ASU No. 2016-15, In March 2016, the FASB issued ASU No. 2016-09, In February 2016, the FASB issued ASU No. 2016-02, 2016-02 In January 2016, the FASB issues ASU No. 2016-01, In July 2015, the FASB issued ASU No. 2015-11, On May 28, 2014, the FASB issued ASU No. 2014-09, We will adopt the standard as of January 1, 2018, and will utilize the modified retrospective transition method. While we are still finalizing our accounting policies under the new standard and are in the process of quantifying the cumulative effect adjustment from prior periods that will be recognized in our consolidated balance sheet as of the date of adoption as an adjustment to retained earnings, to date we have concluded: • In sales transactions for certain security software products that are sold with integral third-party delivered software maintenance, we will change to record both the software license and the accompanying software maintenance on a net basis, as the agent in the arrangement. Under current guidance, we bifurcate the sale of the software license from the sale of the maintenance contract, record the sale of the software product on a gross basis, as the principal in the arrangement, and record the sale of the software maintenance on a net basis, as an agent in the arrangement. This change will lead us to report lower net sales in future periods related to security software products. This change will have no effect on gross profit dollars, but all other things being equal, gross margin for these specific sales would increase compared to prior years. • The accounting for inventories not available for sale, otherwise known as bill and hold arrangements, will change such that a portion of revenue under the contracts will be recognized earlier than we are recognizing under current accounting standards. Bill and hold arrangements are inventory balances owned and paid for by our clients, but for which we are warehousing the product and will be deploying it to the clients’ locations in a future period. • The accounting for renewals of certain software term licenses will change to delay revenue recognition until the beginning of the renewal period. Under current guidance, we recognize revenue as the renewal order is completed. We do not believe this change will have a material effect on our sales or profitability trends, as it is only a change in timing of recognition between periods. • Sales commissions on contracts with performance periods that exceed one year will be recorded as an asset and amortized to expense over the related contract performance period as opposed to being expensed in the period the transaction is generated. Our analysis and evaluation of the new standard will continue through to when we publish our first quarter of 2018 results. A substantial amount of work has been completed, and findings and progress to date have been reported to management and the Audit Committee. Although we currently believe that the changes overall resulting from the adoption of the new standard will not lead to operating trends that are materially different than we reported in prior years, our evaluation of the effects is still being finalized. Currently, we estimate the total cumulative effect adjustment from prior periods that will be recognized in our consolidated balance sheet as of the date of adoption as an adjustment to retained earnings to be less than $10,000,000, on a pretax basis.

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Property and Equipment	(2) Property and Equipment Property and equipment consist of the following (in thousands): December 31, 2017 2016 Software $ 171,701 $ 159,442 Buildings 65,468 63,253 Equipment 103,542 93,553 Furniture and fixtures 38,459 36,526 Leasehold improvements 25,981 21,132 Land 5,179 5,131 410,330 379,037 Accumulated depreciation and amortization (335,078 ) (308,127 ) Property and equipment, net $ 75,252 $ 70,910 We periodically assess whether any indicators of impairment existed related to our property and equipment. We incurred non-cash write-off Depreciation and amortization expense related to property and equipment was $25,787,000, $27,493,000 and $26,649,000 in 2017, 2016 and 2015, respectively. Interest charges capitalized in connection with internal-use

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	(3) Goodwill The changes in the carrying amount of goodwill for the year ended December 31, 2017 are as follows (in thousands): North America EMEA APAC Consolidated Goodwill $ 379,617 $ 151,439 $ 13,973 $ 545,029 Accumulated impairment losses (323,422 ) (151,439 ) (13,973 ) (488,834 ) Goodwill acquired during 2016 (507 ) — 6,957 6,450 Balance at December 31, 2016 55,688 — 6,957 62,645 Goodwill acquired during 2017 64,140 4,041 605 68,786 Balance at December 31, 2017 $ 119,828 $ 4,041 $ 7,562 $ 131,431 On September 26, 2017, we acquired Caase.com, which has been integrated into our EMEA business. Under the purchase 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 $4,041,000 was recorded as goodwill in the EMEA reporting unit (see Note 21). The primary driver for this acquisition was to strengthen our ability to deliver Intelligent Technology Solutions to our clients in the Netherlands, with a view to expand into the wider European region in the near future. On January 6, 2017, we acquired Datalink, which has been integrated into our North America business. Under the purchase 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 $64,140,000 was recorded as goodwill in the North America reporting unit (see Note 21). The primary driver for this acquisition was to strengthen our position as a leading IT solutions provider with deep technical talent delivering data center solutions to clients on premise or in the cloud. On September 1, 2016, we acquired Ignia, which has been integrated into our APAC business. Under the purchase 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 $6,957,000 was recorded as goodwill in the APAC reporting unit (see Note 21). The primary driver for this acquisition was to expand our global footprint in the areas of application design, digital solutions, cloud, mobility and business analytics, while also building on our unique position to bring solutions powered by Intelligent Technology™ to our clients in the Asia-Pacific region. The change in goodwill in our APAC operating segment as of December 31, 2017 compared to the balance as of December 31, 2016 resulted from a final working capital adjustment of $35,000 during the year and foreign currency translation adjustments associated with the goodwill balance. On October 1, 2015, we acquired BlueMetal, which has been integrated into our North America business. In 2016, we resolved the working capital contingency associated with the acquisition of BlueMetal. We recorded the adjustment of the purchase price allocation as a reduction of goodwill in our North America operating segment upon the receipt of $507,000 in cash during 2016. During 2017, 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 2017. The results of the goodwill impairment test indicated that the fair values of our North America, EMEA and APAC reporting units, estimated using the market approach, were in excess of their respective carrying values.

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	(4) Intangible Assets Intangible assets consist of the following (in thousands): December 31, 2017 2016 Customer relationships $ 133,660 $ 41,711 Other 4,475 1,978 138,135 43,689 Accumulated amortization (37,357 ) (22,982 ) Intangible assets, net $ 100,778 $ 20,707 In March and December 2017, respectively, the customer relationship intangible assets associated with the 2012 acquisition of Inmac and the 2011 acquisition of Ensynch were fully amortized. As such, the gross intangible assets balance and the accumulated amortization balance were both reduced by approximately $2,516,000, which had no effect on the net intangible assets balance reported in the accompanying consolidated balance sheet as of December 31, 2017. In September 2016, the customer relationship intangible assets associated with the 2006 acquisition of Software Spectrum Inc. and the 2008 acquisition of MINX Limited in the United Kingdom were fully amortized. As such, the gross intangible assets balance and the accumulated amortization balance were both reduced by approximately $81,817,000, which had no effect on the net intangible assets balance reported in the accompanying consolidated balance sheet as of December 31, 2016. During 2017, 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 2017, 2016 and 2015 was $16,812,000, $10,637,000 and $11,308,000, respectively. Future amortization expense for the remaining unamortized balance as of December 31, 2017 is estimated as follows (in thousands): Years Ending December 31, Amortization Expense 2018 $ 14,260 2019 11,690 2020 11,677 2021 11,638 2022 11,638 Thereafter 39,875 Total amortization expense $ 100,778

Accounts Payable - Inventory Fi

Accounts Payable - Inventory Financing Facility	12 Months Ended
	Dec. 31, 2017
Payables and Accruals [Abstract]
Accounts Payable - Inventory Financing Facility	(5) Accounts Payable - Inventory Financing Facility We have entered into an agreement with a financial intermediary to facilitate the purchase of inventory from various suppliers under certain terms and conditions, as described below. These amounts are classified separately as accounts payable - inventory financing facility in the accompanying consolidated balance sheets. The aggregate availability for vendor purchases under our inventory financing facility is $325,000,000. From time to time and at our option, we may request to increase the aggregate amount available under the inventory financing facility by up to an aggregate of $25,000,000, subject to customary conditions. The facility matures on June 23, 2021. Additionally, the facility may be renewed under certain circumstances described in the agreement for successive 12-month

Debt, Capital Lease and Other F

Debt, Capital Lease and Other Financing Obligations	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Debt, Capital Lease and Other Financing Obligations	(6) Debt, Capital Lease and Other Financing Obligations Debt Our long-term debt consists of the following (in thousands): December 31, 2017 2016 Senior revolving credit facility $ 117,500 $ — Term Loan A (less unamortized debt issuance costs of $873) 165,377 — Accounts receivable securitization financing facility 25,000 39,500 Capital leases and other financing obligations 5,291 1,231 Total 313,168 40,731 Less: current portion of long-term debt (16,592 ) (480 ) Long-term debt $ 296,576 $ 40,251 Our senior revolving credit facility (“revolving facility”) is used for general corporate purposes, which may include acquisitions and share repurchases, and may be used for borrowings in certain foreign currencies and for letters of credit, in each case up to specified sublimits. The revolving facility has an aggregate U.S. dollar equivalent maximum borrowing amount of $350,000,000, including a maximum borrowing capacity that may be used for borrowing in certain foreign currencies of $50,000,000. On January 6, 2017, we amended our revolving facility to expand the facility by $175,000,000 in the form of an incremental Term Loan A (“TLA”). Pricing and all other general terms and conditions of the TLA are governed by the existing revolving facility. The TLA requires amortization payments of 5%, 7.5%, 10%, 12.5% and 15% of the original principal balance in years one through five, respectively, to be paid quarterly through March 31, 2021, with the remaining balance of $107,187,500 due at maturity on June 23, 2021. The revolving facility and TLA are guaranteed by the Company’s material domestic subsidiaries and are secured by a lien on substantially all of the Company’s and each guarantor’s assets. The interest rates applicable to borrowings under the revolving facility and the TLA are based on the leverage ratio of the Company as set forth on a pricing grid in the agreement. Amounts outstanding under the revolving facility and TLA bear interest, payable quarterly, at a floating rate equal to the prime rate plus a predetermined spread of 0.00% to 0.75% or, at our option, a LIBOR rate plus a pre-determined Our accounts receivable securitization financing facility (“ABS facility”) has a maximum aggregate borrowing availability of $250,000,000 and matures on June 23, 2019. Under our ABS facility, we can sell receivables periodically to a special purpose accounts receivable and financing entity (the “SPE”), which is exclusively engaged in purchasing receivables from us. The SPE is a wholly-owned, bankruptcy-remote entity that we have included in our consolidated financial statements. The SPE funds its purchases by selling undivided interests in eligible trade accounts receivable to independent financial institution purchasers under the ABS facility (“Purchasers”), which is administered by an independent financial institution agent. The SPE’s assets are available first and foremost to satisfy the claims of the Purchasers, and we cannot convey any interest in the receivables sold to the Purchasers (or allow any adverse claims on the receivables) without the consent of the Purchasers. In addition, the SPE is required to maintain a minimum capital amount and various reserves pursuant to the terms of the ABS facility. We maintain effective control over the receivables that are sold. Accordingly, the receivables remain recorded on our consolidated balance sheets. At December 31, 2017 and 2016, the SPE owned $1,141,520,000 and $936,467,000, respectively, of receivables recorded at fair value and included in the accompanying consolidated balance sheets. While the ABS facility has a stated maximum amount, the actual availability under the ABS facility is limited by the quantity and quality of the underlying accounts receivable. As of December 31, 2017, qualified receivables were sufficient to permit access to the full $250,000,000 facility amount, of which $25,000,000 was outstanding. See discussion of the maximum leverage ratio under “Debt Covenants” below. Under the amended ABS facility, interest is payable monthly, and the floating interest rate applicable at December 31, 2017 was 2.41% per annum, including a 0.85% usage fee on any outstanding balances. In addition, we pay a monthly commitment fee on the unused portion of the facility of 0.375%. During the years ended December 31, 2017, 2016 and 2015, the weighted average interest rates on amounts outstanding under our ABS facility, including the usage and commitment fees and the amortization of deferred financing fees, were 2.4%, 1.9% and 1.6%, respectively. Weighted average borrowings under our ABS facility in 2017, 2016 and 2015 were $153,759,000, $145,376,000 and $112,101,000, respectively. Debt Covenants Our revolving facility, our TLA and our ABS facility contain various covenants customary for transactions of this type, including limitations on the payment of dividends and the requirement that we comply with maximum leverage and minimum fixed charge ratio requirements, comply with a minimum receivables requirement and meet monthly, quarterly and annual reporting requirements. If we fail to comply with these covenants, the lenders would be able to demand payment within a specified period of time. Further, the terms of the ABS facility identify various circumstances that would result in an “amortization event” under the facility. Our consolidated debt balance that can be outstanding at the end of any fiscal quarter under our revolving facility, our TLA and our ABS facility is limited by certain financial covenants, particularly a maximum leverage ratio. The maximum leverage ratio is calculated as aggregate debt outstanding divided by the sum of our trailing twelve month net earnings (loss) plus (i) interest expense, excluding non-cash (iv) non-cash non-recurring non-cash Capital Lease and Other Financing Obligations In August 2017, we entered into two 12-month 36-month non-cash Future minimum payments under the capitalized leases consist of the following as of December 31, 2017 (in thousands): Years Ending December 31, 2018 $ 1,550 2019 1,016 2020 381 Total minimum lease payments 2,947 Less amount representing interest (145 ) Present value of minimum lease payments $ 2,802 From time to time, we also enter into other financing agreements with financial intermediaries to facilitate the purchase of products from certain vendors. In conjunction with our acquisition of Datalink effective January 6, 2017, we acquired certain obligations associated with Datalink’s financing of the equipment that it leased to its clients. At December 31, 2017, these financing obligations totaled $2,489,000. No amounts were owed under other financing agreements as of December 31, 2016. The current and long-term portions of our capital 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, 2017 and 2016.

Operating Leases

Operating Leases	12 Months Ended
	Dec. 31, 2017
Leases [Abstract]
Operating Leases	(7) Operating Leases We have non-cancelable Future minimum lease payments under non-cancelable Years Ending December 31, 2018 18,601 2019 16,617 2020 12,122 2021 9,170 2022 6,966 Thereafter 12,023 Total minimum lease payments $ 75,499 Amounts in the table above exclude approximately $1.6 million in each of 2018 and 2019 in non-cancellable

Severance and Restructuring Act

Severance and Restructuring Activities	12 Months Ended
	Feb. 21, 2018
Restructuring and Related Activities [Abstract]
Severance and Restructuring Activities	(8) Severance and Restructuring Activities During 2017, 2016 and 2015, we recorded severance expense associated with the elimination of certain positions based on a re-alignment North America EMEA APAC Consolidated Balances at December 31, 2014 $ 857 $ 2,971 $ — $ 3,828 Severance costs, net of adjustments 1,126 3,781 — 4,907 Cash payments (1,456 ) (3,534 ) — (4,990 ) Foreign currency translation adjustments (22 ) (235 ) — (257 ) Balances at December 31, 2015 505 2,983 — 3,488 Severance costs, net of adjustments 2,966 1,496 118 4,580 Cash payments (2,524 ) (3,239 ) (118 ) (5,881 ) Foreign currency translation adjustments — (23 ) — (23 ) Balances at December 31, 2016 947 1,217 — 2,164 Severance costs, net of adjustments 4,010 4,888 104 9,002 Cash payments (3,336 ) (3,597 ) (89 ) (7,022 ) Foreign currency translation adjustments 10 486 — 496 Balances at December 31, 2017 $ 1,631 $ 2,994 $ 15 $ 4,640 Immaterial adjustments were recorded as a reduction to severance and restructuring expense in each of 2017, 2016 and 2015, due to changes in estimates. The remaining outstanding obligations as of December 31, 2017 are expected to be paid during the next 12 months and are therefore included in accrued expenses and other current liabilities.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Feb. 21, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	(9) Stock-Based Compensation We recorded the following pre-tax Years Ended December 31, 2017 2016 2015 North America $ 9,697 $ 8,096 $ 6,648 EMEA 2,737 2,530 1,908 APAC 392 432 366 Total Consolidated $ 12,826 $ 11,058 $ 8,922 Company Plan Our Board of Directors adopted the Amended Insight Enterprises, Inc. 2007 Omnibus Plan (the “Plan”) on March 28, 2011. The Plan was approved by our stockholders on May 18, 2011 at our 2011 annual meeting and, unless sooner terminated, will remain in place until May 18, 2021. 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 On February 17, 2016, the Board of Directors adopted the First Amendment to the Plan (the “First Amendment”). On May 18, 2016 at our 2016 annual meeting, our stockholders approved the First Amendment. The First Amendment: (a) updates the list of performance criteria contained in Section 16.1 of the Plan; (b) imposes a limit on the dollar value of awards that may be granted to any one participant who is a non-employee 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, 2017, of the 7,250,000 shares of common stock reserved and available for grant under the Plan, 3,215,540 shares of common stock remain available for grant under the Plan. 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, 2017, total compensation cost related to nonvested RSUs not yet recognized is $17,483,000, which is expected to be recognized over the next 1.25 years on a weighted-average basis. The following table summarizes our RSU activity during 2017: Number Weighted Average Grant Date Fair Value Fair Value Nonvested at the beginning of year 1,067,557 $ 25.37 Granted 369,438 $ 44.12 Vested, including shares withheld to cover taxes (466,839 ) $ 24.88 $ 20,284,762 (a) Forfeited (78,043 ) $ 32.16 Nonvested at the end of year 892,113 $ 32.86 $ 34,159,007 (b) (a) The aggregate fair value of vested RSUs represents the total pre-tax (b) The aggregate fair value of the nonvested RSUs and the RSUs expected to vest represents the total pre-tax During each of the years in the three-year period ended December 31, 2017, the RSUs that vested for teammates in the United States were net-share net-share

Assets Held for Sale

Assets Held for Sale	12 Months Ended
	Dec. 31, 2017
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Assets Held for Sale	(10) Assets Held for Sale In May 2016, we sold real estate that we owned in Bloomingdale, Illinois that was previously classified as a held for sale asset and included in other current assets in the accompanying consolidated balance sheet as of December 31, 2015. In previous years, we recorded non-cash
Discontinued Operations, Disposed of by Sale [Member] | Russia [Member]
Assets Held for Sale	(22) Sale of Foreign Entity On July 19, 2017, we concluded the sale of our operations in Russia, formerly a part of our EMEA operating segment, to one of our global partners that is focused in the region. We recorded a loss on the sale of the foreign entity of approximately $3,646,000 during the third quarter of 2017, including a $2,903,000 charge upon the release of our cumulative translation adjustment account balance as of the sale date.

Income Taxes

Income Taxes	12 Months Ended
	Feb. 21, 2018
Income Tax Disclosure [Abstract]
Income Taxes	(11) Income Taxes The following table presents the United States (“U.S.”) and foreign components of earnings before income taxes and the related income tax expense (in thousands): Earnings before income taxes: Years Ended December 31, 2017 2016 2015 United States $ 119,330 $ 99,095 $ 90,575 Foreign 39,768 40,363 28,601 $ 159,098 $ 139,458 $ 119,176 Income tax expense: Years Ended December 31, 2017 2016 2015 Current: U.S. Federal $ 31,067 $ 27,947 $ 24,369 U.S. State and local 3,636 2,200 2,705 Foreign 14,573 14,104 11,077 49,276 44,251 38,151 Deferred: U.S. Federal 20,327 10,395 5,104 U.S. State and local (427 ) 1,088 602 Foreign (761 ) (966 ) (532 ) 19,139 10,517 5,174 $ 68,415 $ 54,768 $ 43,325 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): 2017 2016 2015 Statutory federal income tax rate $ 55,684 35.0 % $ 48,810 35.0 % $ 41,712 35.0 % State income tax expense, net of federal income tax benefit 2,808 1.8 3,368 2.4 3,180 2.7 Audits and adjustments, net (313 ) (0.2 ) (1,039 ) (0.7 ) (886 ) (0.7 ) Change in valuation allowances 2,472 1.5 3,742 2.7 2,944 2.5 Foreign income taxed at different rates (6,057 ) (3.8 ) (6,611 ) (4.7 ) (5,729 ) (4.8 ) U.S. mandatory deemed repatriation 5,625 3.5 — — — — Adjustment of net deferred tax assets for enacted U.S. federal tax reform 7,738 4.9 — — — — Change in U.S. tax law applicable to certain foreign entities — — 2,577 1.8 — — Non-deductible 571 0.4 518 0.4 474 0.4 Other, net (113 ) (0.1 ) 3,403 2.4 1,630 1.3 Effective tax rate $ 68,415 43.0 % $ 54,768 39.3 % $ 43,325 36.4 % In December 2017, U.S. federal tax reform was enacted as part of the U.S. Tax Cuts and Jobs Act. As part of the change in tax law, beginning in 2018, the U.S. statutory federal income tax rate was reduced from 35% to 21%. This reduction required a remeasurement of our deferred tax balances that resulted in an increase in our 2017 income tax expense. In addition, the change in tax law included provisions requiring mandatory deemed repatriation of undistributed foreign earnings. In 2017, we recorded a tax charge totaling $13,363,000 in connection with the enactment of the U.S. Tax Cuts and Jobs Act. Due to the enactment date and complexities of the new law, we have not completed our accounting related to these items. In accordance with Staff Accounting Bulletin 118, issued on December 22, 2017, we have concluded that the U.S. income taxes attributable to the remeasurement of U.S. deferred income taxes, the mandatory deemed repatriation provision and the state tax effects of these items are provisional amounts. A change in U.S. tax law was enacted in December 2016 related to the taxation of foreign currency translation gains or losses arising from qualified business units. The change, which increased our U.S. federal income taxes, affects our foreign entities that are treated as branches for U.S. tax purposes. The “Other, net” line item in the schedule above includes $349,000 and $1,296,000 related to the effect of non-deductible For foreign entities not treated as branches for U.S. tax purposes, historically, we did not provide for U.S. income taxes on the undistributed earnings of these subsidiaries as these earnings were considered to be reinvested and, in the opinion of management, would continue to be reinvested indefinitely outside of the United States. As a result of U.S. federal tax reform enacted during December 2017, all undistributed foreign earnings are deemed distributed. The significant components of deferred tax assets and liabilities are as follows (in thousands): December 31, 2017 2016 Deferred tax assets: Net operating losses $ 25,418 $ 18,964 Foreign tax credits 21,346 13,115 Accruals 5,921 6,426 Goodwill and other intangibles 4,717 35,523 Stock-based compensation 3,023 4,238 Accounts receivable 2,124 2,547 Inventories 1,930 2,598 Property and equipment 1,111 705 Deferred revenue 600 468 Other 335 55 Gross deferred tax assets 66,525 84,639 Valuation allowances (45,995 ) (30,972 ) Total deferred tax assets 20,530 53,667 Deferred tax liabilities: Goodwill and other intangibles (1,587 ) (1,221 ) Accrued withholding tax (1,452 ) — Prepaid expenses (369 ) (204 ) Other (775 ) (795 ) Total deferred tax liabilities (4,183 ) (2,220 ) Net deferred tax assets $ 16,347 $ 51,447 The net non-current December 31, 2017 2016 Net non-current $ 17,064 $ 52,347 Net non-current (717 ) (900 ) Net deferred tax assets $ 16,347 $ 51,447 As of December 31, 2017, we have a federal net operating loss carryforward (“NOL”) of $1,455,000 and U.S. state NOLs of $1,977,000 that will expire between 2018 and 2036. We also have NOLs from various non-U.S. non-U.S. On the basis of currently available information, we 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, 2017 and 2016, our valuation allowances totaled $45,995,000 and $30,972,000, respectively, representing non-U.S. We believe it is more likely than not that forecasted income, including income that may be generated as a result of prudent and feasible tax planning strategies, together with the tax effects of deferred tax liabilities, will be sufficient to fully recover our remaining deferred tax assets. In the future, if we determine that realization of the remaining deferred tax assets and the availability of certain previously paid taxes to be refunded are not more likely than not, we will need to increase our valuation allowances and record additional income tax expense. The following table summarizes the change in the valuation allowance (in thousands): December 31, 2017 2016 Valuation allowances at beginning of year $ 30,972 $ 28,750 Increase in income tax expense 2,472 3,742 U.S. federal tax reform 11,623 — Foreign currency translation adjustments 2,865 (1,035 ) Other (1,937 ) (485 ) Valuation allowances at end of year $ 45,995 $ 30,972 The increase in our valuation allowance related to U.S. federal tax reform in the table above was primarily related to U.S. mandatory deemed repatriation. Various taxing jurisdictions are examining our tax returns for certain tax years. Although the outcome of tax audits cannot be predicted with certainty, management believes the ultimate resolution of these examinations will not result in a material adverse effect to our financial position, results of operations or cash flows. As of December 31, 2017 and 2016, we had approximately $4,273,000 and $2,246,000, respectively, of unrecognized tax benefits. Of these amounts, approximately $287,000 and $195,000, respectively, related to accrued interest. A reconciliation of the beginning and ending amounts of unrecognized tax benefits, excluding interest, is as follows (in thousands): Balance at December 31, 2016 $ 2,051 Additions for tax positions added through acquisition 2,484 Subtractions for tax positions in prior periods (59 ) Additions for tax positions in current period 867 Additions due to foreign currency translation 53 Subtractions due to audit settlements and statute expirations (1,410 ) Balance at December 31, 2017 $ 3,986 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. Several of our subsidiaries are currently under audit for tax years 2012 through 2015. 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. However, based on the status of the various examinations in multiple jurisdictions, an estimate of the range of reasonably possible outcomes cannot be made at this time, but the estimated effect on our income tax expense and net earnings is not expected to be significant. We, including our subsidiaries, file income tax returns in the U.S. federal jurisdiction and many state and local and non-U.S. non-U.S.

Market Risk Management

Market Risk Management	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Market Risk Management	(12) 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 $117,500,000 outstanding under our revolving facility, $166,250,000 outstanding under our TLA and $25,000,000 outstanding under our ABS facility at December 31, 2017. The interest rate attributable to the borrowings under our revolving facility, our TLA and our ABS facility was 3.49%, 3.57% and 2.41%, respectively, per annum at December 31, 2017. The change in annual pre-tax 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 as a separate component of non-operating non-functional non-functional non-operating non-performance

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	(13) Derivative Financial Instruments We use derivatives to partially offset our exposure to fluctuations in certain foreign currencies. We do not enter into derivative contracts for speculative or trading purposes. Derivatives are recorded at fair value on the balance sheet based on observable market based inputs or unobservable inputs that are corroborated by market data (Level 2). Gains or losses resulting from changes in fair value of the derivative are recorded currently in income. We do not designate our hedges for hedge accounting, and our foreign currency derivative instruments are not subject to any master netting arrangements with our counterparties. We use foreign exchange forward contracts to mitigate risk associated with certain non-functional non-functional Our derivative financial instruments as of December 31, 2017 were not material. The effect of our derivative financial instruments on our results of operations during the years ended December 31, 2017, 2016 and 2015 were a gain of $159,000, a loss of $2,722,000 and a loss of $942,000, respectively. These amounts are reported within the net foreign currency exchange (gain) loss line item in our consolidated statements of operations.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	(14) 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. We have elected to use the income approach to value our foreign exchange derivatives, using observable Level 2 market expectations at the measurement date and standard valuation techniques to convert future amounts to a single present value amount assuming that participants are motivated, but not compelled, to transact. Level 2 inputs for the valuations are limited to quoted prices for similar assets or liabilities in active markets and inputs other than quoted prices that are observable for the asset or liability (specifically LIBOR rates, foreign exchange rates, and foreign exchange forward points). Mid-market As of December 31, 2017, we have no non-financial

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2017
Retirement Benefits [Abstract]
Benefit Plans	(15) 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. The discretionary match provided to participants is equivalent to 50% of a participant’s pre-tax

Share Repurchase Programs

Share Repurchase Programs	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Share Repurchase Programs	(16) Share Repurchase Programs In February 2016, February 2015 and October 2014, our Board of Directors authorized share repurchase programs of $50,000,000, $75,000,000 and $25,000,000, respectively. No share repurchase program was authorized in 2017. 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, 2017, 2016 and 2015, respectively, in thousands, except per share amounts: Year Total Number Average Price Approximate Dollar 2017 — $ — $ — 2016 1,891 26.43 50,000 2015 3,300 27.83 91,843 Total 5,191 $ 141,843 All shares repurchased were retired. On February 13, 2018, our Board of Directors authorized the repurchase of up to $50,000,000 of our common stock. Our share repurchases will be made on the open market, subject to Rule 10b-18 10b5-1

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Feb. 21, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	(17) 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. As of December 31, 2017, we had approximately $1,962,000 of performance bonds outstanding. 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, 2017. 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, 2017. 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 arising in the ordinary course of 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, claims of alleged non-compliance The Company is not involved in any pending or threatened legal proceedings 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
	Feb. 21, 2018
Receivables [Abstract]
Supplemental Financial Information	(18) Supplemental Financial Information Additions and deductions related to the allowance for doubtful accounts receivable for 2017, 2016 and 2015 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, 2017 $ 9,138 $ 5,245 $ (4,225 ) $ 10,158 Year ended December 31, 2016 $ 11,872 $ 2,452 $ (5,186 ) $ 9,138 Year ended December 31, 2015 $ 19,336 $ 6,761 $ (14,225 ) $ 11,872 During 2015, we undertook a project to analyze our older accounts receivable to attempt further collection action, or where appropriate, to write off such accounts as uncollectible. Since these aged accounts receivable had been fully reserved against, the write off was accomplished through the elimination of the associated allowance, with no effect on net accounts receivable balances. The reduction of the allowance for doubtful accounts to $11,872,000 at December 31, 2015 was a direct result of the write off of these older fully reserved accounts receivable as well as an overall improvement in managing the receivables portfolio. The reduction of the reserve during 2015 related to these actions had no effect on our results of operations.

Cash Flows

Cash Flows	12 Months Ended
	Feb. 21, 2018
Supplemental Cash Flow Elements [Abstract]
Cash Flows	(19) Cash Flows Cash payments for interest on indebtedness and cash payments for taxes on income were as follows (in thousands): Years Ended December 31, 2017 2016 2015 Supplemental disclosures of cash flow information: Cash paid during the year for interest $ 10,976 $ 3,782 $ 2,866 Cash paid during the year for income taxes, net of refunds $ 55,470 $ 39,051 $ 41,062 Non-cash

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Feb. 21, 2018
Segment Reporting [Abstract]
Segment and Geographic Information	(20) 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. During the year ended December 31, 2017, subsequent to our acquisition of Datalink, our consolidated net sales from the provision of services approximated 10%. As such, for the year ended December 31, 2017, we began reporting net sales from the provision of services and the related costs of goods sold separately from net sales of products and the related costs of goods on the face of our consolidated statement of operations. For comparability purposes, net sales and costs of goods sold for the years ended December 31, 2016 and 2015 have been expanded to conform to the current year presentation. These changes in presentation had no effect on previously reported total net sales, total costs of goods sold or gross profit amounts. In conjunction with these changes in presentation, because fees earned from activities reported net are considered services revenues, we reclassified certain revenue streams for which we act as the agent in the transaction to net sales from services. Previously, we included these net revenue streams within our software and, to a lesser extent, hardware sales mix categories based on the type of product being sold (e.g., fees earned for the sale of software maintenance and certain software licenses were included in software sales and fees earned for the sale of certain third-party provided training and warranty services were included in hardware sales when we historically disclosed and analyzed our sales mix). For comparability purposes, our sales mix among our hardware, software and services categories for the years ended December 31, 2016 and 2015 has been reclassified to conform to the current year presentation. These reclassifications had no effect on previously reported total net sales amounts. The following tables summarize net sales by offering for North America, EMEA and APAC including the effect of the reclassifications on the previously reported net sales by sales mix amounts for the years ended December 31, 2016 and 2015 (in thousands): North America Years Ended December 31, Sales Mix 2017 2016 2015 (As Reclassified) (As Reclassified) Hardware $ 3,352,355 $ 2,454,889 $ 2,336,764 Software 1,310,118 1,146,808 1,157,168 Services 519,261 370,131 329,596 $ 5,181,734 $ 3,971,828 $ 3,823,528 In North America, fees earned from activities reported on a net basis of $270,000 and $87,984,000 that were previously reported as part of our hardware and software product categories, respectively, in 2016, and fees earned from activities reported on a net basis of $24,000 and $74,101,000 that were previously reported as part of our hardware and software product categories, respectively, in 2015, were reclassified to services to conform to the current year presentation. EMEA Years Ended December 31, Sales Mix 2017 2016 2015 (As Reclassified) (As Reclassified) Hardware $ 536,500 $ 481,505 $ 531,308 Software 710,452 762,427 756,373 Services 108,464 94,628 83,456 $ 1,355,416 $ 1,338,560 $ 1,371,137 In EMEA, fees earned from activities reported on a net basis of $48,586,000 and $43,388,000 that were previously reported as part of our software product category in 2016 and 2015, respectively, were reclassified to services to conform to the current year presentation. APAC Years Ended December 31, Sales Mix 2017 2016 2015 (As Reclassified) (As Reclassified) Hardware $ 27,907 $ 18,916 $ 14,327 Software 101,412 132,718 149,607 Services 37,154 23,493 14,491 $ 166,473 $ 175,127 $ 178,425 In APAC, fees earned from activities reported on a net basis of $9,000 and $10,991,000 that were previously reported as part of our hardware and software product categories, respectively, in 2016, and fees earned from activities reported on a net basis of $6,000 and $8,439,000 that were previously reported as part of our hardware and software product categories, respectively, in 2015, were reclassified to services to conform to the current year presentation. 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 2017, 2016 or 2015. 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, 2017 North America EMEA APAC Consolidated Net Sales: Products $ 4,662,473 $ 1,246,952 $ 129,319 $ 6,038,744 Services 519,261 108,464 37,154 664,879 Total net sales 5,181,734 1,355,416 166,473 6,703,623 Costs of goods sold: Products 4,253,587 1,140,204 118,611 5,512,402 Services 236,470 24,902 11,279 272,651 Total costs of goods sold 4,490,057 1,165,106 129,890 5,785,053 Gross profit 691,677 190,310 36,583 918,570 Operating expenses: Selling and administrative expenses 530,792 164,305 28,231 723,328 Severance and restructuring expenses 4,010 4,888 104 9,002 Loss on sale of foreign entity — 3,646 — 3,646 Acquisition-related expenses 3,223 106 — 3,329 Earnings from operations $ 153,652 $ 17,365 $ 8,248 $ 179,265 Total assets $ 2,337,573 $ 530,242 $ 101,169 $ 2,968,984 * Year Ended December 31, 2016 North America EMEA APAC Consolidated Net Sales: Products $ 3,601,697 $ 1,243,932 $ 151,634 $ 4,997,263 Services 370,131 94,628 23,493 488,252 Total net sales 3,971,828 1,338,560 175,127 5,485,515 Costs of goods sold: Products 3,301,148 1,129,917 140,397 4,571,462 Services 145,199 22,956 2,796 170,951 Total costs of goods sold 3,446,347 1,152,873 143,193 4,742,413 Gross profit 525,481 185,687 31,934 743,102 Operating expenses: Selling and administrative expenses 401,316 160,269 23,658 585,243 Severance and restructuring expenses 2,966 1,496 118 4,580 Acquisition-related expenses 4,278 — 169 4,447 Earnings from operations $ 116,921 $ 23,922 $ 7,989 $ 148,832 Total assets $ 2,204,351 $ 562,293 $ 119,778 $ 2,886,422 * Year Ended December 31, 2015 North America EMEA APAC Consolidated Net Sales: Products $ 3,493,932 $ 1,287,681 $ 163,934 $ 4,945,547 Services 329,596 83,456 14,491 427,543 Total net sales 3,823,528 1,371,137 178,425 5,373,090 Costs of goods sold: Products 3,196,297 1,167,113 149,943 4,513,353 Services 125,668 17,737 — 143,405 Total costs of goods sold 3,321,965 1,184,850 149,943 4,656,758 Gross profit 501,563 186,287 28,482 716,332 Operating expenses: Selling and administrative expenses 396,603 165,879 22,424 584,906 Severance and restructuring expenses 1,126 3,781 — 4,907 Earnings from operations $ 103,834 $ 16,627 $ 6,058 $ 126,519 Total assets $ 1,999,485 $ 543,146 $ 114,973 $ 2,657,604 * * Consolidated total assets do not reflect intercompany eliminations and corporate assets of $283,333,000, $667,122,000 and $643,587,000 at December 31, 2017, 2016 and 2015, respectively. 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 2017 Net sales $ 4,933,805 $ 684,632 $ 1,085,186 $ 6,703,623 Total long-lived assets $ 50,462 $ 14,783 $ 10,007 $ 75,252 2016 Net sales $ 3,776,352 $ 671,999 $ 1,037,164 $ 5,485,515 Total long-lived assets $ 46,774 $ 13,570 $ 10,566 $ 70,910 2015 Net sales $ 3,645,876 $ 711,957 $ 1,015,257 $ 5,373,090 Total long-lived assets $ 58,748 $ 16,810 $ 12,723 $ 88,281 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 Years Ended December 31, 2017 2016 2015 Depreciation and amortization of property and equipment: North America $ 20,241 $ 21,952 $ 22,239 EMEA 5,025 4,908 3,757 APAC 521 633 653 25,787 27,493 26,649 Amortization of intangible assets: North America 15,971 8,139 8,053 EMEA 73 1,951 2,834 APAC 768 547 421 16,812 10,637 11,308 Total $ 42,599 $ 38,130 $ 37,957

Acquisitions

Acquisitions	12 Months Ended
	Feb. 21, 2018
Business Combinations [Abstract]
Acquisitions	(21) Acquisitions Caase.com Effective September 26, 2017, we acquired Caase.com, a Dutch cloud service provider, for a purchase price, net of cash acquired, of approximately $6,038,000, subject to a final working capital adjustment. We believe that this acquisition strengthened our ability to deliver Intelligent Technology Solutions to our clients in the Netherlands, with a view to expand into the wider European region in the near future. The total fair value of net identifiable assets acquired was approximately $2,107,000, including $68,000 of cash acquired and $2,039,000 of identifiable intangible assets, consisting primarily of customer relationships. The customer relationships identifiable intangible asset is being amortized using the straight-line method over its estimated economic life of 8 years. The preliminary purchase price was allocated under the acquisition method of accounting using the information available at the time. During the fourth quarter of 2017, we finalized the fair value assumptions for identifiable intangible assets acquired and reduced the fair value of identifiable intangible assets acquired by approximately $193,000. Goodwill initially recorded of approximately $4,117,000, which was recorded in our EMEA operating segment, was adjusted to $4,041,000 as of December 31, 2017 as a result of the net effects of the decrease in the value of acquired identifiable intangible assets noted previously, adjustments for deferred taxes and foreign currency translation adjustments. None of the goodwill is tax deductible. We will finalize the purchase price allocation in 2018 when the final working capital adjustment is agreed upon and paid and the evaluation of uncertain tax positions, which could lead to an adjustment of the purchase price allocation, is completed. We consolidated the results of operations for Caase.com within our EMEA operating segment beginning on the effective date of the acquisition. Our historical results would not have been materially affected by the acquisition of Caase.com 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 statements of operations. Datalink On January 6, 2017, we completed our acquisition of Datalink, a leading provider of IT services and enterprise data center solutions based in Eden Prairie, Minnesota, for a cash purchase price of $257,456,000, which included cash and cash equivalents acquired of $76,597,000. We believe that this acquisition strengthened our position as a leading IT solutions provider with deep technical talent delivering data center solutions to clients on premise or in the cloud. 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): Total purchase price $ 257,456 Fair value of net assets acquired: Current assets $ 238,577 Identifiable intangible assets – see description below 94,500 Property and equipment 5,843 Other assets 17,888 Current liabilities (129,071 ) Long-term liabilities, including deferred taxes (34,421 ) Total fair value of net assets acquired 193,316 Excess purchase price over fair value of net assets acquired (“goodwill”) $ 64,140 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. The estimated fair values of current assets and liabilities (other than deferred revenue and related deferred costs) were based upon their historical costs on the date of acquisition due to their short-term nature. The majority of property and equipment were also estimated based upon historical costs as they approximated fair value. Certain long-term assets, including Datalink’s IT system, were written down to the estimated fair value based on the economic benefit expected to be realized from the assets following the acquisition. Deferred revenue acquired primarily represents monies collected prior to January 6, 2017 related to unearned revenues associated with support services to be performed in the future. The estimated fair value of deferred revenue of $65,500,000, which is included in current and long-term liabilities in the table above, was calculated using the adjusted fulfillment cost method as the present value of the costs expected to be incurred by a third party to perform the support services obligations acquired under various customer contracts, plus a reasonable profit associated with the performance effort. The deferred costs acquired represent monies paid prior to January 6, 2017 to purchase third party customer support contracts from manufacturers. The estimated fair value of the deferred costs of $48,029,000, which is included in current and other assets in the table above, was calculated in conjunction with the valuation of deferred revenue discussed above. Identified intangible assets of $94,500,000 consist primarily of customer relationships, the trade name and non-compete 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 Years Trade name 1 Year Non-compete 1 Year Amortization expense recognized for the period from the acquisition date through December 31, 2017 was $11,520,000. Goodwill of $64,140,000, which was recorded in our North America operating segment, represents the excess of the purchase price over the estimated fair value assigned to tangible and identifiable intangible assets acquired and liabilities assumed from Datalink. The addition of the Datalink technical employees to our team and the opportunity to grow our data center solutions business are the primary factors making up the goodwill recognized as part of the transaction. None of the goodwill is tax deductible. The preliminary purchase price was allocated using information available at the time. During the second quarter of 2017, upon analysis of additional information affecting our estimate of the fair value of net assets acquired, we adjusted the purchase price allocation and reduced the goodwill balance by $945,000. During the remainder of 2017, no further adjustments to the purchase price allocation were made, and the purchase price allocation was finalized. We have consolidated the results of operations for Datalink since its acquisition on January 6, 2017. Consolidated net sales and gross profit for the year ended December 31, 2017 include $524,281,000 and $118,917,000, respectively, from Datalink. The following table reports pro forma information as if the acquisition of Datalink had been completed at the beginning of the earliest period presented (in thousands, except per share amounts): Year Ended December 31, 2017 2016 2015 Net sales As reported $ 6,703,623 $ 5,485,515 $ 5,373,090 Proforma $ 6,707,533 $ 6,084,484 $ 6,033,750 Net earnings As reported $ 90,683 $ 84,690 $ 75,851 Proforma $ 92,276 $ 85,823 $ 75,696 Diluted earnings per share As reported $ 2.50 $ 2.32 $ 1.98 Proforma $ 2.55 $ 2.36 $ 1.98 Ignia Effective September 1, 2016, we acquired Ignia, a business technology consulting and managed services provider headquartered in Perth, Australia, with an additional office in Melbourne, for a cash purchase price, net of cash acquired, of approximately $10,804,000, subject to a final working capital adjustment. We believe that this acquisition expands our global footprint in the areas of application design, digital solutions, cloud, mobility and business analytics, while also building on our unique position to bring solutions powered by Intelligent Technology™ to our clients in the Asia-Pacific region. The total fair value of net identifiable assets acquired initially recorded was approximately $5,324,000, including $1,463,000 of cash acquired and $4,716,000 of identifiable intangible assets, consisting primarily of customer relationships and restrictive covenant agreements which are being amortized using the straight-line method over their estimated economic lives of eight years and 27 months, respectively. The preliminary purchase price was allocated using the information available at the time. During the fourth quarter of 2016, we finalized the fair value assumptions for identifiable intangible assets acquired and reduced the fair value of identifiable intangible assets acquired by approximately $218,000. Goodwill initially recorded of approximately $7,248,000, which was recorded in our APAC operating segment, was adjusted to $6,957,000 as of December 31, 2016 as a result of the net effects of the decrease in the value of acquired identifiable intangible assets noted previously and foreign currency translation adjustments. None of the goodwill is tax deductible. We finalized the purchase price allocation in the second quarter of 2017 when the final working capital adjustment of $35,000 was agreed upon. We consolidated the results of operations for Ignia within our APAC operating segment beginning on September 1, 2016, the effective date of the acquisition. Our historical results would not have been materially affected by the acquisition of Ignia 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 statements of operations. BlueMetal Effective October 1, 2015, we acquired BlueMetal, an interactive design and technology architecture firm based in the Boston area, with offices in Chicago and New York, for a cash purchase price, net of cash acquired, of approximately $44,221,000. BlueMetal delivers strategic design, application development, business intelligence solutions and data visualization platforms, and we believe this acquisition strengthens our services capabilities to bring value to our clients’ businesses in the area of application design, mobility and big data. The total fair value of net assets acquired was approximately $15,412,000, including $15,240,000 of identifiable intangible assets, consisting primarily of customer relationships and restrictive covenant agreements which are being amortized using the straight-line method over their estimated economic lives of eight and three years, respectively. Goodwill acquired approximated $29,938,000, which was recorded in our North America operating segment. In 2016, we resolved the working capital contingency associated with the acquisition of BlueMetal. We recorded an adjustment of the purchase price as a reduction of goodwill in our North America operating segment upon the receipt of $507,000 in cash during 2016. The addition of the BlueMetal employees to our team and the opportunity to grow our services business are the primary factors making up the goodwill recognized as part of the transaction. None of the goodwill is tax deductible. We consolidated the results of operations for BlueMetal beginning on October 1, 2015, the effective date of the acquisition. Our historical results would not have been materially affected by the acquisition of BlueMetal 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 statements of operations.

Selected Quarterly Financial In

Selected Quarterly Financial Information	12 Months Ended
	Feb. 21, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Information	(23) Selected Quarterly Financial Information (unaudited) The following tables set forth selected unaudited consolidated quarterly financial information for 2017 and 2016 (in thousands, except per share data): Quarters Ended December 31, September 30, June 30, March 31, Net sales $ 1,784,075 $ 1,757,973 $ 1,684,032 $ 1,477,543 Costs of goods sold 1,551,192 1,531,892 1,432,653 1,269,316 Gross profit 232,883 226,081 251,379 208,227 Operating expenses: Selling and administrative expenses 184,554 180,390 180,752 177,632 Severance and restructuring expenses 2,791 494 1,022 4,695 Loss on sale of foreign entity — 3,646 — — Acquisition-related expenses — 106 276 2,947 Earnings from operations 45,538 41,445 69,329 22,953 Non-operating Interest income (346 ) (227 ) (205 ) (431 ) Interest expense 5,360 5,555 4,326 3,933 Net foreign currency exchange (gain) loss (117 ) 341 251 380 Other expense, net 367 339 326 315 Earnings before income taxes 40,274 35,437 64,631 18,756 Income tax expense 26,106 13,025 24,376 4,908 Net earnings $ 14,168 $ 22,412 $ 40,255 $ 13,848 Net earnings per share: Basic $ 0.40 $ 0.63 $ 1.13 $ 0.39 Diluted $ 0.39 $ 0.62 $ 1.11 $ 0.38 Shares used in per share calculations: Basic 35,809 35,787 35,765 35,602 Diluted 36,272 36,203 36,169 36,185 Quarters Ended December 31, September 30, June 30, March 31, Net sales $ 1,467,583 $ 1,392,716 $ 1,456,234 $ 1,168,982 Costs of goods sold 1,276,614 1,210,908 1,247,017 1,007,874 Gross profit 190,969 181,808 209,217 161,108 Operating expenses: Selling and administrative expenses 145,066 143,872 150,186 146,119 Severance and restructuring expenses 1,527 788 909 1,356 Acquisition-related expenses 3,706 741 — — Earnings from operations 40,670 36,407 58,122 13,633 Non-operating Interest income (282 ) (318 ) (216 ) (250 ) Interest expense 2,271 2,517 1,992 1,848 Net foreign currency exchange (gain) loss (520 ) 579 (153 ) 616 Other expense, net 311 352 359 268 Earnings before income taxes 38,890 33,277 56,140 11,151 Income tax expense 17,790 11,642 21,073 4,263 Net earnings $ 21,100 $ 21,635 $ 35,067 $ 6,888 Net earnings per share: Basic $ 0.59 $ 0.61 $ 0.96 $ 0.19 Diluted $ 0.59 $ 0.60 $ 0.96 $ 0.18 Shares used in per share calculations: Basic 35,479 35,474 36,380 37,075 Diluted 35,963 35,790 36,612 37,386

Operations and Summary of Sig30

Operations and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business We are a Fortune 500 global information technology (“IT”) provider helping businesses of all sizes – from small and medium sized firms to worldwide enterprises, governments, schools and health care organizations – define, architect, implement and manage Intelligent Technology Solutions TM Operating Segment Geography North America United States 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. A discussion of changes in our classification of certain revenue streams during 2017, can be found in Note 20. Prior year results were reclassified to conform to the current year presentation. These reclassifications had no effect on consolidated total net sales. Acquisitions Effective September 26, 2017, we acquired Caase Group B.V. (referred to herein as, “Caase.com”), a Dutch cloud service provider, for a purchase price, net of cash acquired, of approximately $6,038,000, subject to a final working capital adjustment. The acquisition was funded using cash on hand. Effective January 6, 2017, we acquired Datalink Corporation (“Datalink”), a leading provider of IT services and enterprise data center solutions based in Eden Prairie, Minnesota, for a cash purchase price of $257,456,000, which included cash and cash equivalents acquired of $76,597,000. The acquisition was funded using cash on hand and borrowings under our revolving facility in the form of an incremental Term Loan A (“TLA”). Effective September 1, 2016, we acquired Ignia Pty Ltd (“Ignia”), a business technology consulting and managed services provider headquartered in Perth, Australia, with an additional office in Melbourne, for a cash purchase price, net of cash acquired, of approximately $10,804,000. The acquisition was funded using cash on hand. Effective October 1, 2015, we acquired BlueMetal Architects, Inc. (“BlueMetal”), an interactive design and technology architecture firm based in the Boston area with offices in Chicago and New York, for a cash purchase price, net of cash acquired, of approximately $44,221,000. The acquisition was funded using borrowings under our accounts receivable securitization financing facility. Our results of operations include the results of Caase.com, Datalink, Ignia and BlueMetal from their respective acquisition dates. (See Note 21 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. 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.
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 and Cash Equivalents	Cash and Cash Equivalents 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.
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 Inventories not available for sale relate to product sales transactions in which we are warehousing the product and will be deploying the product to our clients’ designated locations subsequent to period-end. non-cancelable
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 Costs incurred to develop internal-use internal-use internal-use Reviews are regularly performed to determine whether facts and circumstances exist which indicate that the useful 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. We may first perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If it is concluded that this is the case, it is necessary to perform a quantitative goodwill impairment test. Otherwise, the goodwill impairment test is not required. The quantitative goodwill impairment review process compares the fair value of the reporting unit in which goodwill resides to its carrying value. The Company has three reporting units, which are the same as our operating segments. Multiple valuation techniques can be used to assess the fair value of the reporting unit. All of 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 intangible assets acquired in business combinations using the straight-line method over the following estimated economic lives of the intangible assets from the date of acquisition: Estimated Economic Customer relationships 2 –11 years Tradenames and Restrictive Covenant Agreements 9 months –3 years We regularly perform reviews to determine if facts and circumstances exist which indicate that the useful 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.
Trade Credits	Trade Credits Trade credit liabilities arise from aged unclaimed credit memos, duplicate payments, payments for returned product or overpayments made to us by our clients, and, to a lesser extent, from goods received by us from a partner for which we were never invoiced. Trade credit liabilities are included in accrued expenses and other current liabilities in our consolidated balance sheets. We derecognize the liability only if it has been extinguished, upon either (1) our payment of the liability to relieve our obligation or (2) our legal release from the related obligation, which is recorded as a reduction of costs of goods sold.
Self Insurance	Self-Insurance We are self-insured in the United States 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 paid-in
Sales Recognition	Sales Recognition Sales are recognized when title and risk of loss are passed to the client, there is persuasive evidence of an arrangement for sale, delivery has occurred and/or services have been rendered, the sales price is fixed or determinable and collectibility is reasonably assured. Our standard sales terms are F.O.B. shipping point or equivalent, at which time title and risk of loss have passed to the client. However, because we either (i) have a general practice of covering client losses while products are in transit despite title and risk of loss contractually transferring at the point of shipment or (ii) have specifically stated F.O.B. destination contractual terms with the client, delivery is not deemed to have occurred until the point in time when the product is received by the client. We make provisions 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 when the product is received by the client. We recognize revenue on a gross basis as the principal in the transaction because we control the transaction as the primary obligor for product 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, we assume credit risk for the amounts invoiced, and we work closely with our clients to determine their hardware and software specifications. We record the freight we bill to our clients as net sales and the related freight costs we pay as costs of goods sold. We report sales net of any sales-based taxes assessed by governmental authorities that are imposed on and concurrent with sales transactions. Revenue is recognized from software sales when clients acquire the right to use or copy software under license, but in no case prior to the commencement of the term of the initial software license agreement, provided that all other revenue recognition criteria have been met (i.e., evidence of the arrangement exists, the fee is fixed or determinable and collectibility of the fee is probable). We sell certain third-party service contracts, software maintenance and cloud or software-as-a-service We recognize revenue for sales of services ratably over the time period over which the service will be provided if there is no discernible pattern of recognition of the cost to perform the service. Billings for such services that are made in advance of the related revenue recognized are recorded as deferred revenue and recognized as revenue ratably over the billing coverage period. Revenue from certain arrangements that allow for the use of a product or service over a period of time without taking possession of software are also accounted for ratably over the time period over which the service will be provided. We recognize revenue for professional services engagements that are on a time and materials basis based upon hours incurred as the services are performed and amounts are earned. Net sales for these services engagements are not a significant portion of our consolidated net sales. Additionally, we sell certain professional services contracts on a fixed fee basis. Revenues for fixed fee professional services contracts are recognized based on the ratio of costs incurred to total estimated costs. Net sales for these service contracts are not a significant portion of our consolidated net sales. In certain arrangements, we may provide a combination of hardware and software products and the provision of services. Services that are performed by us in conjunction with hardware and software sales that are completed in our facilities prior to shipment of the product are recognized upon delivery, when title passes to the client, for the hardware sale. Net sales of services that are performed at client locations are primarily service-only contracts and are recorded as sales when the services are performed. The total consideration for an arrangement with multiple deliverables is allocated to all deliverables that represent a separate unit of accounting using the relative selling price method.
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, 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 $53,227,000, $48,114,000 and $45,146,000 in 2017, 2016 and 2015, 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, 2017. We monitor our clients’ financial condition and do not require collateral. Sales to the U.S. federal government, which are diversified across multiple agencies and departments, collectively accounts for approximately 9% of our 2017 net sales. Excluding these sales to the federal government, we are not reliant on any one client. No single client accounted for more than 4% of our consolidated net sales in 2017. Supplier Risk Purchases from Microsoft accounted for approximately 26% of our aggregate purchases in 2017. No other partner accounted for more than 10% of purchases in 2017. Our top five partners as a group for 2017 were Microsoft, Cisco Systems, Tech Data (a distributor), Dell and HP Inc., and approximately 60% of our total purchases during 2017 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 $47,053,000, $37,565,000 and $33,568,000 was recorded in 2017, 2016 and 2015, respectively. These amounts were predominantly offset by partner funding earned pursuant to shared marketing expense programs recorded as a reduction of selling and administrative expenses, as discussed in “Partner Funding” above.
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,
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 non-operating
Derivative Financial Instruments	Derivative Financial Instruments We enter into forward foreign exchange contracts to mitigate the risk of non-functional non-operating
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 We record uncertain tax positions on the basis of a two-step more-likely-than-not
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, 2017 2016 2015 Numerator: Net earnings $ 90,683 $ 84,690 $ 75,851 Denominator: Weighted-average shares used to compute basic EPS 35,741 36,102 37,984 Dilutive potential common shares due to dilutive RSUs, net of tax effect 466 336 291 Weighted-average shares used to compute diluted EPS 36,207 36,438 38,275 Net earnings per share: Basic $ 2.54 $ 2.35 $ 2.00 Diluted $ 2.50 $ 2.32 $ 1.98 In 2017, 2016 and 2015, approximately 40,000, 36,000 and 1,000, 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.
Recently Issued Accounting Standards	Recently Issued Accounting Standards In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) No. 2017-04, . In November 2016, the FASB issued ASU No. 2016-18, beginning-of-period end-of-period In August 2016, the FASB issued ASU No. 2016-15, In March 2016, the FASB issued ASU No. 2016-09, In February 2016, the FASB issued ASU No. 2016-02, 2016-02 In January 2016, the FASB issues ASU No. 2016-01, In July 2015, the FASB issued ASU No. 2015-11, On May 28, 2014, the FASB issued ASU No. 2014-09, We will adopt the standard as of January 1, 2018, and will utilize the modified retrospective transition method. While we are still finalizing our accounting policies under the new standard and are in the process of quantifying the cumulative effect adjustment from prior periods that will be recognized in our consolidated balance sheet as of the date of adoption as an adjustment to retained earnings, to date we have concluded: • In sales transactions for certain security software products that are sold with integral third-party delivered software maintenance, we will change to record both the software license and the accompanying software maintenance on a net basis, as the agent in the arrangement. Under current guidance, we bifurcate the sale of the software license from the sale of the maintenance contract, record the sale of the software product on a gross basis, as the principal in the arrangement, and record the sale of the software maintenance on a net basis, as an agent in the arrangement. This change will lead us to report lower net sales in future periods related to security software products. This change will have no effect on gross profit dollars, but all other things being equal, gross margin for these specific sales would increase compared to prior years. • The accounting for inventories not available for sale, otherwise known as bill and hold arrangements, will change such that a portion of revenue under the contracts will be recognized earlier than we are recognizing under current accounting standards. Bill and hold arrangements are inventory balances owned and paid for by our clients, but for which we are warehousing the product and will be deploying it to the clients’ locations in a future period. • The accounting for renewals of certain software term licenses will change to delay revenue recognition until the beginning of the renewal period. Under current guidance, we recognize revenue as the renewal order is completed. We do not believe this change will have a material effect on our sales or profitability trends, as it is only a change in timing of recognition between periods. • Sales commissions on contracts with performance periods that exceed one year will be recorded as an asset and amortized to expense over the related contract performance period as opposed to being expensed in the period the transaction is generated. Our analysis and evaluation of the new standard will continue through to when we publish our first quarter of 2018 results. A substantial amount of work has been completed, and findings and progress to date have been reported to management and the Audit Committee. Although we currently believe that the changes overall resulting from the adoption of the new standard will not lead to operating trends that are materially different than we reported in prior years, our evaluation of the effects is still being finalized. Currently, we estimate the total cumulative effect adjustment from prior periods that will be recognized in our consolidated balance sheet as of the date of adoption as an adjustment to retained earnings to be less than $10,000,000, on a pretax basis.

Operations and Summary of Sig31

Operations and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
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
Estimated Economic Life of Acquired Amortizable Intangible Assets	We amortize intangible assets acquired in business combinations using the straight-line method over the following estimated economic lives of the intangible assets from the date of acquisition: Estimated Economic Customer relationships 2 –11 years Tradenames and Restrictive Covenant Agreements 9 months –3 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, 2017 2016 2015 Numerator: Net earnings $ 90,683 $ 84,690 $ 75,851 Denominator: Weighted-average shares used to compute basic EPS 35,741 36,102 37,984 Dilutive potential common shares due to dilutive RSUs, net of tax effect 466 336 291 Weighted-average shares used to compute diluted EPS 36,207 36,438 38,275 Net earnings per share: Basic $ 2.54 $ 2.35 $ 2.00 Diluted $ 2.50 $ 2.32 $ 1.98

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and equipment consist of the following (in thousands): December 31, 2017 2016 Software $ 171,701 $ 159,442 Buildings 65,468 63,253 Equipment 103,542 93,553 Furniture and fixtures 38,459 36,526 Leasehold improvements 25,981 21,132 Land 5,179 5,131 410,330 379,037 Accumulated depreciation and amortization (335,078 ) (308,127 ) Property and equipment, net $ 75,252 $ 70,910

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2017
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, 2017 are as follows (in thousands): North America EMEA APAC Consolidated Goodwill $ 379,617 $ 151,439 $ 13,973 $ 545,029 Accumulated impairment losses (323,422 ) (151,439 ) (13,973 ) (488,834 ) Goodwill acquired during 2016 (507 ) — 6,957 6,450 Balance at December 31, 2016 55,688 — 6,957 62,645 Goodwill acquired during 2017 64,140 4,041 605 68,786 Balance at December 31, 2017 $ 119,828 $ 4,041 $ 7,562 $ 131,431

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Intangible Assets, Net	Intangible assets consist of the following (in thousands): December 31, 2017 2016 Customer relationships $ 133,660 $ 41,711 Other 4,475 1,978 138,135 43,689 Accumulated amortization (37,357 ) (22,982 ) Intangible assets, net $ 100,778 $ 20,707
Future Amortization Expenses	$10,637,000 and $11,308,000, respectively. Future amortization expense for the remaining unamortized balance as of December 31, 2017 is estimated as follows (in thousands): Years Ending December 31, Amortization Expense 2018 $ 14,260 2019 11,690 2020 11,677 2021 11,638 2022 11,638 Thereafter 39,875 Total amortization expense $ 100,778

Debt, Capital Lease and Other35

Debt, Capital Lease and Other Financing Obligations (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Long-Term Debt	Our long-term debt consists of the following (in thousands): December 31, 2017 2016 Senior revolving credit facility $ 117,500 $ — Term Loan A (less unamortized debt issuance costs of $873) 165,377 — Accounts receivable securitization financing facility 25,000 39,500 Capital leases and other financing obligations 5,291 1,231 Total 313,168 40,731 Less: current portion of long-term debt (16,592 ) (480 ) Long-term debt $ 296,576 $ 40,251
Schedule of Future Minimum Lease Payments for Capital Leases	Future minimum payments under the capitalized leases consist of the following as of December 31, 2017 (in thousands): Years Ending December 31, 2018 $ 1,550 2019 1,016 2020 381 Total minimum lease payments 2,947 Less amount representing interest (145 ) Present value of minimum lease payments $ 2,802

Operating Leases (Tables)

Operating Leases (Tables)	12 Months Ended
	Dec. 31, 2017
Leases [Abstract]
Future Minimum Lease Payments	Future minimum lease payments under non-cancelable Years Ending December 31, 2018 18,601 2019 16,617 2020 12,122 2021 9,170 2022 6,966 Thereafter 12,023 Total minimum lease payments $ 75,499

Severance and Restructuring A37

Severance and Restructuring Activities (Tables)	12 Months Ended
	Feb. 21, 2018
Restructuring and Related Activities [Abstract]
Activity Related to Resource Actions and Outstanding Obligations	The following table details the activity for each of the three years in the period ending December 31, 2017 related to these resource actions, and the outstanding obligations as of December 31, 2017 (in thousands): North America EMEA APAC Consolidated Balances at December 31, 2014 $ 857 $ 2,971 $ — $ 3,828 Severance costs, net of adjustments 1,126 3,781 — 4,907 Cash payments (1,456 ) (3,534 ) — (4,990 ) Foreign currency translation adjustments (22 ) (235 ) — (257 ) Balances at December 31, 2015 505 2,983 — 3,488 Severance costs, net of adjustments 2,966 1,496 118 4,580 Cash payments (2,524 ) (3,239 ) (118 ) (5,881 ) Foreign currency translation adjustments — (23 ) — (23 ) Balances at December 31, 2016 947 1,217 — 2,164 Severance costs, net of adjustments 4,010 4,888 104 9,002 Cash payments (3,336 ) (3,597 ) (89 ) (7,022 ) Foreign currency translation adjustments 10 486 — 496 Balances at December 31, 2017 $ 1,631 $ 2,994 $ 15 $ 4,640

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Feb. 21, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Pre-tax Amounts by Operating Segment for Stock-Based Compensation	We recorded the following pre-tax Years Ended December 31, 2017 2016 2015 North America $ 9,697 $ 8,096 $ 6,648 EMEA 2,737 2,530 1,908 APAC 392 432 366 Total Consolidated $ 12,826 $ 11,058 $ 8,922
Summary of Restricted Stock Units Activity	The following table summarizes our RSU activity during 2017: Number Weighted Average Grant Date Fair Value Fair Value Nonvested at the beginning of year 1,067,557 $ 25.37 Granted 369,438 $ 44.12 Vested, including shares withheld to cover taxes (466,839 ) $ 24.88 $ 20,284,762 (a) Forfeited (78,043 ) $ 32.16 Nonvested at the end of year 892,113 $ 32.86 $ 34,159,007 (b)

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Feb. 21, 2018
Income Tax Disclosure [Abstract]
Earnings Before Income Taxes	Earnings before income taxes: Years Ended December 31, 2017 2016 2015 United States $ 119,330 $ 99,095 $ 90,575 Foreign 39,768 40,363 28,601 $ 159,098 $ 139,458 $ 119,176
Income Tax Expense	Income tax expense: Years Ended December 31, 2017 2016 2015 Current: U.S. Federal $ 31,067 $ 27,947 $ 24,369 U.S. State and local 3,636 2,200 2,705 Foreign 14,573 14,104 11,077 49,276 44,251 38,151 Deferred: U.S. Federal 20,327 10,395 5,104 U.S. State and local (427 ) 1,088 602 Foreign (761 ) (966 ) (532 ) 19,139 10,517 5,174 $ 68,415 $ 54,768 $ 43,325
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): 2017 2016 2015 Statutory federal income tax rate $ 55,684 35.0 % $ 48,810 35.0 % $ 41,712 35.0 % State income tax expense, net of federal income tax benefit 2,808 1.8 3,368 2.4 3,180 2.7 Audits and adjustments, net (313 ) (0.2 ) (1,039 ) (0.7 ) (886 ) (0.7 ) Change in valuation allowances 2,472 1.5 3,742 2.7 2,944 2.5 Foreign income taxed at different rates (6,057 ) (3.8 ) (6,611 ) (4.7 ) (5,729 ) (4.8 ) U.S. mandatory deemed repatriation 5,625 3.5 — — — — Adjustment of net deferred tax assets for enacted U.S. federal tax reform 7,738 4.9 — — — — Change in U.S. tax law applicable to certain foreign entities — — 2,577 1.8 — — Non-deductible 571 0.4 518 0.4 474 0.4 Other, net (113 ) (0.1 ) 3,403 2.4 1,630 1.3 Effective tax rate $ 68,415 43.0 % $ 54,768 39.3 % $ 43,325 36.4 %
Significant Components of Deferred Tax Assets and Liabilities	The significant components of deferred tax assets and liabilities are as follows (in thousands): December 31, 2017 2016 Deferred tax assets: Net operating losses $ 25,418 $ 18,964 Foreign tax credits 21,346 13,115 Accruals 5,921 6,426 Goodwill and other intangibles 4,717 35,523 Stock-based compensation 3,023 4,238 Accounts receivable 2,124 2,547 Inventories 1,930 2,598 Property and equipment 1,111 705 Deferred revenue 600 468 Other 335 55 Gross deferred tax assets 66,525 84,639 Valuation allowances (45,995 ) (30,972 ) Total deferred tax assets 20,530 53,667 Deferred tax liabilities: Goodwill and other intangibles (1,587 ) (1,221 ) Accrued withholding tax (1,452 ) — Prepaid expenses (369 ) (204 ) Other (775 ) (795 ) Total deferred tax liabilities (4,183 ) (2,220 ) Net deferred tax assets $ 16,347 $ 51,447
Net Non-Current Deferred Tax Assets and Liabilities	The net non-current December 31, 2017 2016 Net non-current $ 17,064 $ 52,347 Net non-current (717 ) (900 ) Net deferred tax assets $ 16,347 $ 51,447
Change in Valuation Allowance	The following table summarizes the change in the valuation allowance (in thousands): December 31, 2017 2016 Valuation allowances at beginning of year $ 30,972 $ 28,750 Increase in income tax expense 2,472 3,742 U.S. federal tax reform 11,623 — Foreign currency translation adjustments 2,865 (1,035 ) Other (1,937 ) (485 ) Valuation allowances at end of year $ 45,995 $ 30,972
Reconciliation of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amounts of unrecognized tax benefits, excluding interest, is as follows (in thousands): Balance at December 31, 2016 $ 2,051 Additions for tax positions added through acquisition 2,484 Subtractions for tax positions in prior periods (59 ) Additions for tax positions in current period 867 Additions due to foreign currency translation 53 Subtractions due to audit settlements and statute expirations (1,410 ) Balance at December 31, 2017 $ 3,986

Share Repurchase Programs (Tabl

Share Repurchase Programs (Tables)	12 Months Ended
	Dec. 31, 2017
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, 2017, 2016 and 2015, respectively, in thousands, except per share amounts: Year Total Number Average Price Approximate Dollar 2017 — $ — $ — 2016 1,891 26.43 50,000 2015 3,300 27.83 91,843 Total 5,191 $ 141,843

Supplemental Financial Inform41

Supplemental Financial Information (Tables)	12 Months Ended
	Feb. 21, 2018
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 2017, 2016 and 2015 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, 2017 $ 9,138 $ 5,245 $ (4,225 ) $ 10,158 Year ended December 31, 2016 $ 11,872 $ 2,452 $ (5,186 ) $ 9,138 Year ended December 31, 2015 $ 19,336 $ 6,761 $ (14,225 ) $ 11,872

Cash Flows (Tables)

Cash Flows (Tables)	12 Months Ended
	Feb. 21, 2018
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, 2017 2016 2015 Supplemental disclosures of cash flow information: Cash paid during the year for interest $ 10,976 $ 3,782 $ 2,866 Cash paid during the year for income taxes, net of refunds $ 55,470 $ 39,051 $ 41,062

Segment and Geographic Inform43

Segment and Geographic Information (Tables)	12 Months Ended
	Feb. 21, 2018
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 including the effect of the reclassifications on the previously reported net sales by sales mix amounts for the years ended December 31, 2016 and 2015 (in thousands): North America Years Ended December 31, Sales Mix 2017 2016 2015 (As Reclassified) (As Reclassified) Hardware $ 3,352,355 $ 2,454,889 $ 2,336,764 Software 1,310,118 1,146,808 1,157,168 Services 519,261 370,131 329,596 $ 5,181,734 $ 3,971,828 $ 3,823,528 In North America, fees earned from activities reported on a net basis of $270,000 and $87,984,000 that were previously reported as part of our hardware and software product categories, respectively, in 2016, and fees earned from activities reported on a net basis of $24,000 and $74,101,000 that were previously reported as part of our hardware and software product categories, respectively, in 2015, were reclassified to services to conform to the current year presentation. EMEA Years Ended December 31, Sales Mix 2017 2016 2015 (As Reclassified) (As Reclassified) Hardware $ 536,500 $ 481,505 $ 531,308 Software 710,452 762,427 756,373 Services 108,464 94,628 83,456 $ 1,355,416 $ 1,338,560 $ 1,371,137 In EMEA, fees earned from activities reported on a net basis of $48,586,000 and $43,388,000 that were previously reported as part of our software product category in 2016 and 2015, respectively, were reclassified to services to conform to the current year presentation. APAC Years Ended December 31, Sales Mix 2017 2016 2015 (As Reclassified) (As Reclassified) Hardware $ 27,907 $ 18,916 $ 14,327 Software 101,412 132,718 149,607 Services 37,154 23,493 14,491 $ 166,473 $ 175,127 $ 178,425
Financial Information about Reportable Operating Segments	The tables below present information about our reportable operating segments (in thousands): Year Ended December 31, 2017 North America EMEA APAC Consolidated Net Sales: Products $ 4,662,473 $ 1,246,952 $ 129,319 $ 6,038,744 Services 519,261 108,464 37,154 664,879 Total net sales 5,181,734 1,355,416 166,473 6,703,623 Costs of goods sold: Products 4,253,587 1,140,204 118,611 5,512,402 Services 236,470 24,902 11,279 272,651 Total costs of goods sold 4,490,057 1,165,106 129,890 5,785,053 Gross profit 691,677 190,310 36,583 918,570 Operating expenses: Selling and administrative expenses 530,792 164,305 28,231 723,328 Severance and restructuring expenses 4,010 4,888 104 9,002 Loss on sale of foreign entity — 3,646 — 3,646 Acquisition-related expenses 3,223 106 — 3,329 Earnings from operations $ 153,652 $ 17,365 $ 8,248 $ 179,265 Total assets $ 2,337,573 $ 530,242 $ 101,169 $ 2,968,984 * Year Ended December 31, 2016 North America EMEA APAC Consolidated Net Sales: Products $ 3,601,697 $ 1,243,932 $ 151,634 $ 4,997,263 Services 370,131 94,628 23,493 488,252 Total net sales 3,971,828 1,338,560 175,127 5,485,515 Costs of goods sold: Products 3,301,148 1,129,917 140,397 4,571,462 Services 145,199 22,956 2,796 170,951 Total costs of goods sold 3,446,347 1,152,873 143,193 4,742,413 Gross profit 525,481 185,687 31,934 743,102 Operating expenses: Selling and administrative expenses 401,316 160,269 23,658 585,243 Severance and restructuring expenses 2,966 1,496 118 4,580 Acquisition-related expenses 4,278 — 169 4,447 Earnings from operations $ 116,921 $ 23,922 $ 7,989 $ 148,832 Total assets $ 2,204,351 $ 562,293 $ 119,778 $ 2,886,422 * Year Ended December 31, 2015 North America EMEA APAC Consolidated Net Sales: Products $ 3,493,932 $ 1,287,681 $ 163,934 $ 4,945,547 Services 329,596 83,456 14,491 427,543 Total net sales 3,823,528 1,371,137 178,425 5,373,090 Costs of goods sold: Products 3,196,297 1,167,113 149,943 4,513,353 Services 125,668 17,737 — 143,405 Total costs of goods sold 3,321,965 1,184,850 149,943 4,656,758 Gross profit 501,563 186,287 28,482 716,332 Operating expenses: Selling and administrative expenses 396,603 165,879 22,424 584,906 Severance and restructuring expenses 1,126 3,781 — 4,907 Earnings from operations $ 103,834 $ 16,627 $ 6,058 $ 126,519 Total assets $ 1,999,485 $ 543,146 $ 114,973 $ 2,657,604 *
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 2017 Net sales $ 4,933,805 $ 684,632 $ 1,085,186 $ 6,703,623 Total long-lived assets $ 50,462 $ 14,783 $ 10,007 $ 75,252 2016 Net sales $ 3,776,352 $ 671,999 $ 1,037,164 $ 5,485,515 Total long-lived assets $ 46,774 $ 13,570 $ 10,566 $ 70,910 2015 Net sales $ 3,645,876 $ 711,957 $ 1,015,257 $ 5,373,090 Total long-lived assets $ 58,748 $ 16,810 $ 12,723 $ 88,281
Pre-Tax Depreciation and Amortization by Operating Segment	We recorded the following pre-tax Years Ended December 31, 2017 2016 2015 Depreciation and amortization of property and equipment: North America $ 20,241 $ 21,952 $ 22,239 EMEA 5,025 4,908 3,757 APAC 521 633 653 25,787 27,493 26,649 Amortization of intangible assets: North America 15,971 8,139 8,053 EMEA 73 1,951 2,834 APAC 768 547 421 16,812 10,637 11,308 Total $ 42,599 $ 38,130 $ 37,957

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Feb. 21, 2018
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): Total purchase price $ 257,456 Fair value of net assets acquired: Current assets $ 238,577 Identifiable intangible assets – see description below 94,500 Property and equipment 5,843 Other assets 17,888 Current liabilities (129,071 ) Long-term liabilities, including deferred taxes (34,421 ) Total fair value of net assets acquired 193,316 Excess purchase price over fair value of net assets acquired (“goodwill”) $ 64,140
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 Years Trade name 1 Year Non-compete 1 Year
Summary of Pro Forma Information	The following table reports pro forma information as if the acquisition of Datalink had been completed at the beginning of the earliest period presented (in thousands, except per share amounts): Year Ended December 31, 2017 2016 2015 Net sales As reported $ 6,703,623 $ 5,485,515 $ 5,373,090 Proforma $ 6,707,533 $ 6,084,484 $ 6,033,750 Net earnings As reported $ 90,683 $ 84,690 $ 75,851 Proforma $ 92,276 $ 85,823 $ 75,696 Diluted earnings per share As reported $ 2.50 $ 2.32 $ 1.98 Proforma $ 2.55 $ 2.36 $ 1.98

Selected Quarterly Financial 45

Selected Quarterly Financial Information (Tables)	12 Months Ended
	Feb. 21, 2018
Quarterly Financial Information Disclosure [Abstract]
Consolidated Quarterly Financial Information	The following tables set forth selected unaudited consolidated quarterly financial information for 2017 and 2016 (in thousands, except per share data): Quarters Ended December 31, September 30, June 30, March 31, Net sales $ 1,784,075 $ 1,757,973 $ 1,684,032 $ 1,477,543 Costs of goods sold 1,551,192 1,531,892 1,432,653 1,269,316 Gross profit 232,883 226,081 251,379 208,227 Operating expenses: Selling and administrative expenses 184,554 180,390 180,752 177,632 Severance and restructuring expenses 2,791 494 1,022 4,695 Loss on sale of foreign entity — 3,646 — — Acquisition-related expenses — 106 276 2,947 Earnings from operations 45,538 41,445 69,329 22,953 Non-operating Interest income (346 ) (227 ) (205 ) (431 ) Interest expense 5,360 5,555 4,326 3,933 Net foreign currency exchange (gain) loss (117 ) 341 251 380 Other expense, net 367 339 326 315 Earnings before income taxes 40,274 35,437 64,631 18,756 Income tax expense 26,106 13,025 24,376 4,908 Net earnings $ 14,168 $ 22,412 $ 40,255 $ 13,848 Net earnings per share: Basic $ 0.40 $ 0.63 $ 1.13 $ 0.39 Diluted $ 0.39 $ 0.62 $ 1.11 $ 0.38 Shares used in per share calculations: Basic 35,809 35,787 35,765 35,602 Diluted 36,272 36,203 36,169 36,185 Quarters Ended December 31, September 30, June 30, March 31, Net sales $ 1,467,583 $ 1,392,716 $ 1,456,234 $ 1,168,982 Costs of goods sold 1,276,614 1,210,908 1,247,017 1,007,874 Gross profit 190,969 181,808 209,217 161,108 Operating expenses: Selling and administrative expenses 145,066 143,872 150,186 146,119 Severance and restructuring expenses 1,527 788 909 1,356 Acquisition-related expenses 3,706 741 — — Earnings from operations 40,670 36,407 58,122 13,633 Non-operating Interest income (282 ) (318 ) (216 ) (250 ) Interest expense 2,271 2,517 1,992 1,848 Net foreign currency exchange (gain) loss (520 ) 579 (153 ) 616 Other expense, net 311 352 359 268 Earnings before income taxes 38,890 33,277 56,140 11,151 Income tax expense 17,790 11,642 21,073 4,263 Net earnings $ 21,100 $ 21,635 $ 35,067 $ 6,888 Net earnings per share: Basic $ 0.59 $ 0.61 $ 0.96 $ 0.19 Diluted $ 0.59 $ 0.60 $ 0.96 $ 0.18 Shares used in per share calculations: Basic 35,479 35,474 36,380 37,075 Diluted 35,963 35,790 36,612 37,386

Operations and Summary of Sig46

Operations and Summary of Significant Accounting Policies - Additional Information (Detail)	Sep. 26, 2017USD ($)	Jan. 06, 2017USD ($)	Sep. 01, 2016USD ($)	Oct. 01, 2015USD ($)	Dec. 31, 2017USD ($)Segment$ / sharesshares	Dec. 31, 2016USD ($)shares	Dec. 31, 2015USD ($)shares	Jan. 01, 2018USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of operating segments | Segment					3
Business acquisition cash purchase price					$ 186,932,000	$ 10,297,000	$ 44,221,000
Partner funding recorded as reduction of selling and administrative expenses					53,227,000	48,114,000	45,146,000
Advertising expense					47,053,000	37,565,000	33,568,000
Accounting Standards Update 2016-09 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Tax benefit on the settlement of employee share-based awards					$ 2,483,000
Net earning per share, diluted | $ / shares					$ 0.07
Excess tax benefit from employee gains on stock-based compensation reclassified from financing activities to operating activities						$ 323,000	$ 592,000
Retained Earnings [Member] | Maximum [Member] | Subsequent Event [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cumulative effect adjustment from prior periods								$ 10,000,000
Supplier Risk [Member] | Microsoft [Member] | Purchases [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration percentage					26.00%
Supplier Risk [Member] | Significant Supplier [Member] | Purchases [Member] | Maximum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration percentage					10.00%
Supplier Risk [Member] | Top Five Suppliers [Member] | Purchases [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration percentage					60.00%
Credit Risk [Member] | Net Sales [Member] | Single Customer [Member] | Maximum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration percentage					4.00%
US Federal Government [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percent of sales not exceeded by any single client					9.00%
Restricted Stock Units (RSUs) [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
RSUs excluded from the diluted EPS calculations | shares					40,000	36,000	1,000
Ignia Pty Ltd [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Business acquisition cash purchase price			$ 10,804,000
Business acquisition, effective date of acquisition					Sep. 1, 2016
BlueMetal Architects, Inc. [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Business acquisition cash purchase price				$ 44,221,000
Business acquisition, effective date of acquisition							Oct. 1, 2015
Caase Group, B.V. [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Business acquisition cash purchase price	$ 6,038,000
Datalink [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Business acquisition cash purchase price		$ 257,456,000
Payments to acquire businesses, net of cash and cash equivalents acquired		$ 76,597,000

Operations and Summary of Sig47

Operations and Summary of Significant Accounting Policies - Estimated Economic Lives of Property and Equipment (Detail)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Leasehold improvements	Shorter of underlying lease term or asset life
Buildings [Member]
Property, Plant and Equipment [Line Items]
Useful Life	29 years
Minimum [Member] | Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Useful Life	2 years
Minimum [Member] | Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Minimum [Member] | Software [Member]
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Maximum [Member] | Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Useful Life	7 years
Maximum [Member] | Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful Life	5 years
Maximum [Member] | Software [Member]
Property, Plant and Equipment [Line Items]
Useful Life	10 years

Operations and Summary of Sig48

Operations and Summary of Significant Accounting Policies - Estimated Economic Life of Acquired Amortizable Intangible Assets (Detail)	12 Months Ended
	Dec. 31, 2017
Minimum [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	2 years
Minimum [Member] | Tradenames and Restrictive Covenant Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	9 months
Maximum [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	11 years
Maximum [Member] | Tradenames and Restrictive Covenant Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	3 years

Operations and Summary of Sig49

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, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Numerator:
Net earnings	$ 14,168	$ 22,412	$ 40,255	$ 13,848	$ 21,100	$ 21,635	$ 35,067	$ 6,888	$ 90,683	$ 84,690	$ 75,851
Denominator:
Weighted-average shares used to compute basic EPS	35,809	35,787	35,765	35,602	35,479	35,474	36,380	37,075	35,741	36,102	37,984
Dilutive potential common shares due to dilutive RSUs, net of tax effect									466	336	291
Weighted-average shares used to compute diluted EPS	36,272	36,203	36,169	36,185	35,963	35,790	36,612	37,386	36,207	36,438	38,275
Net earnings per share:
Basic	$ 0.40	$ 0.63	$ 1.13	$ 0.39	$ 0.59	$ 0.61	$ 0.96	$ 0.19	$ 2.54	$ 2.35	$ 2
Diluted	$ 0.39	$ 0.62	$ 1.11	$ 0.38	$ 0.59	$ 0.60	$ 0.96	$ 0.18	$ 2.50	$ 2.32	$ 1.98

Property and Equipment - Proper

Property and Equipment - Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 410,330	$ 379,037
Accumulated depreciation and amortization	(335,078)	(308,127)
Property and equipment, net	75,252	70,910	$ 88,281
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	171,701	159,442
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	65,468	63,253
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	103,542	93,553
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	38,459	36,526
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	25,981	21,132
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 5,179	$ 5,131

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Non- cash charges to write-off certain property and equipment, primarily computer software development costs	$ 418,000	$ 0	$ 535,000
Depreciation and amortization expense	$ 25,787,000	$ 27,493,000	$ 26,649,000

Goodwill - Changes in Carrying

Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Beginning Balance	$ 62,645
Goodwill		$ 545,029
Accumulated impairment losses		(488,834)
Goodwill acquired during the year	68,786	6,450
Ending Balance	131,431	62,645
North America Segment [Member]
Goodwill [Line Items]
Beginning Balance	55,688
Goodwill		379,617
Accumulated impairment losses		(323,422)
Goodwill acquired during the year	64,140
Ending Balance	119,828	55,688
Goodwill acquired during 2016		(507)
EMEA Segment [Member]
Goodwill [Line Items]
Goodwill		151,439
Accumulated impairment losses		(151,439)
Goodwill acquired during the year	4,041
Ending Balance	4,041
APAC Segment [Member]
Goodwill [Line Items]
Beginning Balance	6,957
Goodwill		13,973
Accumulated impairment losses		(13,973)
Goodwill acquired during the year	605	6,957
Ending Balance	$ 7,562	$ 6,957

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill acquired during the year	$ 68,786,000	$ 6,450,000
EMEA Segment [Member]
Goodwill [Line Items]
Goodwill acquired during the year	$ 4,041,000
Business acquisition, effective date of acquisition	Sep. 26, 2017
North America Segment [Member]
Goodwill [Line Items]
Goodwill acquired during the year	$ 64,140,000
Business acquisition, effective date of acquisition	Jan. 6, 2017
Business acquisition, purchase price allocation reduction in goodwill		507,000
APAC Segment [Member]
Goodwill [Line Items]
Goodwill acquired during the year	$ 605,000	$ 6,957,000
Business acquisition, effective date of acquisition		Sep. 1, 2016
Reduction in goodwill balance due to adjustment in purchase price allocation	$ 35,000
BlueMetal Architects, Inc. [Member]
Goodwill [Line Items]
Goodwill acquired during the year			$ 29,938,000
Business acquisition, effective date of acquisition			Oct. 1, 2015
BlueMetal Architects, Inc. [Member] | North America Segment [Member]
Goodwill [Line Items]
Business acquisition, purchase price allocation reduction in goodwill		$ 507,000

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	$ 138,135	$ 43,689
Accumulated amortization	(37,357)	(22,982)
Intangible assets, net	100,778	20,707
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	133,660	41,711
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	$ 4,475	$ 1,978

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, explanation of significant deletions	The gross intangible assets balance and the accumulated amortization balance were both reduced by approximately $2,516,000	The gross intangible assets balance and the accumulated amortization balance were both reduced by approximately $81,817,000
Reduction in gross intangible assets and accumulated amortization balances	$ 2,516,000	$ 81,817,000
Amortization expense	$ 16,812,000	$ 10,637,000	$ 11,308,000

Intangible Assets - Future Amor

Intangible Assets - Future Amortization Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
2,018	$ 14,260
2,019	11,690
2,020	11,677
2,021	11,638
2,022	11,638
Thereafter	39,875
Intangible assets, net	$ 100,778	$ 20,707

Accounts Payable - Inventory 57

Accounts Payable - Inventory Financing Facility - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts Payable And Accrued Expenses [Line Items]
Inventory financing facility maximum borrowing capacity	$ 325,000,000
Inventory financing facility maturity date	Jun. 23, 2021
Imputed interest on inventory financing facility	$ 6,736,000	$ 3,385,000	$ 3,406,000
Inventory financing facility interest rate if balances are not paid within stated vendor terms	Prime plus 1.25%
Inventory financing facility rate if vendor terms not met equal prime plus	1.25%
Maximum [Member]
Accounts Payable And Accrued Expenses [Line Items]
Inventory financing facility additional borrowing capacity	$ 25,000,000

Debt, Capital Lease and Other58

Debt, Capital Lease and Other Financing Obligations - Long-Term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Long-term debt
Senior revolving credit facility	$ 117,500
Term Loan A (less unamortized debt issuance costs of $873)	165,377
Accounts receivable securitization financing facility	25,000	$ 39,500
Capital leases and other financing obligations	5,291	1,231
Total	313,168	40,731
Total	313,168	40,731
Less: current portion of long-term debt	(16,592)	(480)
Long-term debt	$ 296,576	$ 40,251

Debt, Capital Lease and Other59

Debt, Capital Lease and Other Financing Obligations - Long-Term Debt (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Unamortized debt issuance cost	$ 873	$ 0

Debt, Capital Lease and Other60

Debt, Capital Lease and Other Financing Obligations - Additional Information (Detail)	Jan. 06, 2017USD ($)	Aug. 31, 2017	May 31, 2017	Dec. 31, 2017USD ($)Lessee	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Debt Instrument [Line Items]
Debt outstanding				$ 117,500,000
Accounts receivable securitization financing facility				$ 25,000,000	$ 39,500,000
Capitalized lease term		12-month	36-month terms
Number of capital leases | Lessee				2
Amount owed under other financing agreement				$ 2,489,000	0
ABS Facility [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity				$ 250,000,000
Line of credit maturity date				Jun. 23, 2019
Weighted average amount outstanding borrowings				$ 153,759,000	145,376,000	$ 112,101,000
Debt outstanding				25,000,000
Receivables at fair value				1,141,520,000	$ 936,467,000
Amount of facility permitted by qualified receivables				250,000,000
Accounts receivable securitization financing facility				$ 25,000,000
Credit facility, interest rate at period end				2.41%
Credit facility, usage fee				0.85%
Monthly commitment fee on unused portion of ABS facility				0.375%
Weighted average interest rate				2.40%	1.90%	1.60%
Outstanding borrowings at period end				$ 25,000,000
Senior Revolving Credit Facility Term Loan A and Asset Backed Securitization Facility [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity				$ 766,250,000
Maximum leverage ratio times adjusted earnings				3.50
Senior Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity				$ 350,000,000
Incremental borrowings under Term Loan A	$ 175,000,000
Percentage of amortization payments year one				5.00%
Percentage of amortization payments year two				7.50%
Percentage of amortization payments year three				10.00%
Percentage of amortization payments year four				12.50%
Percentage of amortization payments year five				15.00%
Repayment of borrowing date				Mar. 31, 2021
Line of credit due at maturity				$ 107,187,500
Line of credit maturity date				Jun. 23, 2021
Applicable floating interest rate				3.49%
Weighted average amount outstanding borrowings				$ 63,604,000	$ 35,811,000	$ 21,987,000
Debt outstanding				$ 117,500,000
Credit facility, interest rate at period end				3.49%
Outstanding borrowings at period end				$ 117,500,000
Senior Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Commitment on the unused portion of the facility				0.25%
Participation fee on letter of credit				1.25%
Senior Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Commitment on the unused portion of the facility				0.45%
Participation fee on letter of credit				2.25%
Senior Revolving Credit Facility [Member] | Foreign Currency Borrowings [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity				$ 50,000,000
Senior Revolving Credit Facility [Member] | Prime Rate [Member]
Debt Instrument [Line Items]
Interest rate description				Prime rate plus a predetermined spread of 0.00% to 0.75%
Senior Revolving Credit Facility [Member] | Prime Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Pre-determined spread				0.00%
Senior Revolving Credit Facility [Member] | Prime Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Pre-determined spread				0.75%
Senior Revolving Credit Facility [Member] | LIBOR Rate [Member]
Debt Instrument [Line Items]
Interest rate description				LIBOR rate plus a pre-determined spread of 1.25% to 2.25%
Senior Revolving Credit Facility [Member] | LIBOR Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Pre-determined spread				1.25%
Senior Revolving Credit Facility [Member] | LIBOR Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Pre-determined spread				2.25%
Term Loan A [Member]
Debt Instrument [Line Items]
Applicable floating interest rate				3.57%
Debt outstanding				$ 166,250,000
Credit facility, interest rate at period end				3.57%
Outstanding borrowings at period end				$ 166,250,000
Senior Revolving Credit Facility and Term Loan A [Member]
Debt Instrument [Line Items]
Interest expense				$ 8,491,000	$ 2,191,000	$ 1,813,000

Debt, Capital Lease and Other61

Debt, Capital Lease and Other Financing Obligations - Schedule of Future Minimum Lease Payments for Capital Leases (Detail)	Dec. 31, 2017USD ($)
Capital Lease Obligations [Abstract]
2,018	$ 1,550
2,019	1,016
2,020	381
Total minimum lease payments	2,947
Less amount representing interest	(145)
Present value of minimum lease payments	$ 2,802

Operating Leases - Additional I

Operating Leases - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Leases [Abstract]
Operating leases rental expense	$ 19,126,000	$ 14,444,000	$ 14,737,000
Non-cancellable rental income, 2018	1,600,000
Non-cancellable rental income, 2019	$ 1,600,000

Operating Leases - Future Minim

Operating Leases - Future Minimum Lease Payment (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Leases [Abstract]
2,018	$ 18,601
2,019	16,617
2,020	12,122
2,021	9,170
2,022	6,966
Thereafter	12,023
Total minimum lease payments	$ 75,499

Severance and Restructuring A64

Severance and Restructuring Activities - Activity Related to Resource Actions and Outstanding Obligations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 2,164	$ 3,488	$ 3,828
Severance costs, net of adjustments	9,002	4,580	4,907
Cash payments	(7,022)	(5,881)	(4,990)
Foreign currency translation adjustments	496	(23)	(257)
Ending balance	4,640	2,164	3,488
North America Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	947	505	857
Severance costs, net of adjustments	4,010	2,966	1,126
Cash payments	(3,336)	(2,524)	(1,456)
Foreign currency translation adjustments	10		(22)
Ending balance	1,631	947	505
EMEA Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	1,217	2,983	2,971
Severance costs, net of adjustments	4,888	1,496	3,781
Cash payments	(3,597)	(3,239)	(3,534)
Foreign currency translation adjustments	486	(23)	(235)
Ending balance	2,994	1,217	$ 2,983
APAC Segment [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs, net of adjustments	104	118
Cash payments	(89)	$ (118)
Ending balance	$ 15

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, 2017	Dec. 31, 2016	Dec. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to restricted stock units (RSUs)	$ 12,826	$ 11,058	$ 8,922
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)	9,697	8,096	6,648
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)	2,737	2,530	1,908
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)	$ 392	$ 432	$ 366

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of share based compensation under Amended 2007 Omnibus Plan	Our Board of Directors adopted the Amended Insight Enterprises, Inc. 2007 Omnibus Plan (the "Plan") on March 28, 2011.
Maximum number of authorized shares	7,250,000
Number of shares of stock available for grant	3,215,540
Payments for teammates' tax obligations to taxing authorities	$ 5,318,000	$ 2,219,000	$ 2,265,000
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	$ 17,483,000
Weighted average number of years for recognition of outstanding nonvested RSUs	1 year 2 months 30 days
Shares withheld to cover taxes	122,255	84,953	85,652
Payments for teammates' tax obligations to taxing authorities	$ 5,318,000	$ 2,219,000	$ 2,265,000

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, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested Number, Beginning balance	1,067,557
Number, Granted	369,438
Number, Vested, including shares withheld to cover taxes	(466,839)
Number, Forfeited	(78,043)
Nonvested Number, Ending balance	892,113	1,067,557
Nonvested Weighted Average Grant Date Fair Value, Beginning balance	$ 25.37
Weighted Average Grant Date Fair Value, Granted	44.12
Weighted Average Grant Date Fair Value, Vested, including shares withheld to cover taxes	24.88
Weighted Average Grant Date Fair Value, Forfeited	32.16
Nonvested Weighted Average Grant Date Fair Value, Ending balance	$ 32.86	$ 25.37
Fair Value, Vested, including shares withheld to cover taxes	$ 20,284,762	$ 9,235,102	$ 9,168,784
Fair Value, Nonvested at end of period	$ 34,159,007

Stock-Based Compensation - Su68

Stock-Based Compensation - Summary of Restricted Stock Units Activity (Parenthetical) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 29, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing stock price				$ 38.29
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value for vested shares of RSUs	$ 20,284,762	$ 9,235,102	$ 9,168,784

Assets Held for Sale - Addition

Assets Held for Sale - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)
Long Lived Assets Held-for-sale [Line Items]
Gain on sale of real estate	$ 338,000
Selling and Administrative Expenses [Member]
Long Lived Assets Held-for-sale [Line Items]
Gain on sale of real estate	$ 338,000

Income Taxes - Earnings Before

Income Taxes - Earnings Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
United States									$ 119,330	$ 99,095	$ 90,575
Foreign									39,768	40,363	28,601
Earnings before income taxes	$ 40,274	$ 35,437	$ 64,631	$ 18,756	$ 38,890	$ 33,277	$ 56,140	$ 11,151	$ 159,098	$ 139,458	$ 119,176

Income Taxes - Income Tax Expen

Income Taxes - Income Tax Expense (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
U.S. Federal									$ 31,067	$ 27,947	$ 24,369
U.S. State and local									3,636	2,200	2,705
Foreign									14,573	14,104	11,077
Total current income tax expense									49,276	44,251	38,151
Deferred:
U.S. Federal									20,327	10,395	5,104
U.S. State and local									(427)	1,088	602
Foreign									(761)	(966)	(532)
Total deferred income tax expense									19,139	10,517	5,174
Income tax expense	$ 26,106	$ 13,025	$ 24,376	$ 4,908	$ 17,790	$ 11,642	$ 21,073	$ 4,263	$ 68,415	$ 54,768	$ 43,325

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, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Statutory federal income tax rate, Amount									$ 55,684	$ 48,810	$ 41,712
State income tax expense, net of federal income tax benefit									2,808	3,368	3,180
Audits and adjustments, net									(313)	(1,039)	(886)
Change in valuation allowances									2,472	3,742	2,944
Foreign income taxed at different rates									(6,057)	(6,611)	(5,729)
U.S. mandatory deemed repatriation									5,625
Adjustment of net deferred tax assets for enacted U.S. federal tax reform									7,738
Change in U.S. tax law applicable to certain foreign entities										2,577
Non-deductible compensation									571	518	474
Other, net									(113)	3,403	1,630
Income tax expense	$ 26,106	$ 13,025	$ 24,376	$ 4,908	$ 17,790	$ 11,642	$ 21,073	$ 4,263	$ 68,415	$ 54,768	$ 43,325
Statutory federal income tax rate									35.00%	35.00%	35.00%
State income tax expense, net of federal income tax benefit, Rate									1.80%	2.40%	2.70%
Audits and adjustments, net, Rate									(0.20%)	(0.70%)	(0.70%)
Change in valuation allowances, Rate									1.50%	2.70%	2.50%
Foreign income taxed at different rates, Rate									(3.80%)	(4.70%)	(4.80%)
U.S. mandatory deemed repatriation, Rate									3.50%
Adjustment of net deferred tax assets for enacted U.S. federal tax reform, Rate									4.90%
Change in U.S. tax law applicable to certain foreign entities, Rate										1.80%
Non-deductible compensation, Rate									0.40%	0.40%	0.40%
Other, net, Rate									(0.10%)	2.40%	1.30%
Effective tax rate									43.00%	39.30%	36.40%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax [Line Items]
Statutory federal income tax rate		35.00%	35.00%	35.00%
Income tax expense in connection with enactment of U.S. Tax Cuts and Jobs Act		$ 13,363,000
Non-deductible acquisition-related expenses		349,000	$ 1,296,000
Valuation allowances		45,995,000	30,972,000	$ 28,750,000
Unrecognized tax benefits		4,273,000	2,246,000
Unrecognized tax benefits, interest on income taxes accrued		$ 287,000	$ 195,000
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		2014, 2015, 2016 and 2017
Statute of limitations for tax examination, Minimum		3 years
Statute of limitations for tax examination, Maximum		10 years
Scenario, Forecast [Member]
Income Tax [Line Items]
Statutory federal income tax rate	21.00%
Earliest Tax Year [Member]
Income Tax [Line Items]
Open tax year		2,012
Latest Tax Year [Member]
Income Tax [Line Items]
Open tax year		2,015
State and Local Jurisdictions [Member]
Income Tax [Line Items]
Net operating loss carry forward		$ 1,977,000
Foreign [Member]
Income Tax [Line Items]
Net operating loss carry forward		87,056,000
Operating loss carryforward, which will expire		$ 6,258,000
Operating loss expiration year		2,018
Operating loss expiration year		2,024
United States [Member]
Income Tax [Line Items]
Net operating loss carry forward		$ 1,455,000
Operating loss expiration year		2,018
Operating loss expiration year		2,036

Income Taxes - Significant Comp

Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Net operating losses	$ 25,418	$ 18,964
Foreign tax credits	21,346	13,115
Accruals	5,921	6,426
Goodwill and other intangibles	4,717	35,523
Stock-based compensation	3,023	4,238
Accounts receivable	2,124	2,547
Inventories	1,930	2,598
Property and equipment	1,111	705
Deferred revenue	600	468
Other	335	55
Gross deferred tax assets	66,525	84,639
Valuation allowances	(45,995)	(30,972)	$ (28,750)
Total deferred tax assets	20,530	53,667
Deferred tax liabilities:
Goodwill and other intangibles	(1,587)	(1,221)
Accrued withholding tax	(1,452)
Prepaid expenses	(369)	(204)
Other	(775)	(795)
Total deferred tax liabilities	(4,183)	(2,220)
Net deferred tax assets	$ 16,347	$ 51,447

Income Taxes - Net Non-Current

Income Taxes - Net Non-Current Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Net non-current deferred tax assets	$ 17,064	$ 52,347
Net non-current deferred tax liabilities	(717)	(900)
Net deferred tax assets	$ 16,347	$ 51,447

Income Taxes - Change in Valuat

Income Taxes - Change in Valuation Allowance (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Valuation allowances at beginning of year	$ 30,972	$ 28,750
Increase in income tax expense	2,472	3,742	$ 2,944
U.S. federal tax reform	11,623
Foreign currency translation adjustments	2,865	(1,035)
Other	(1,937)	(485)
Valuation allowances at end of year	$ 45,995	$ 30,972	$ 28,750

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Income Tax Disclosure [Abstract]
Beginning Balance	$ 2,051
Additions for tax positions added through acquisition	2,484
Subtractions for tax positions in prior periods	(59)
Additions for tax positions in current period	867
Additions due to foreign currency translation	53
Subtractions due to audit settlements and statute expirations	(1,410)
Ending Balance	$ 3,986

Market Risk Management - Additi

Market Risk Management - Additional Information (Detail)	Dec. 31, 2017USD ($)
Line of Credit Facility [Line Items]
Debt outstanding	$ 117,500,000
Senior Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt outstanding	$ 117,500,000
Interest rate	3.49%
Term Loan A [Member]
Line of Credit Facility [Line Items]
Debt outstanding	$ 166,250,000
Interest rate	3.57%
ABS Facility [Member]
Line of Credit Facility [Line Items]
Debt outstanding	$ 25,000,000
Interest rate	2.41%

Derivative Financial Instrume79

Derivative Financial Instruments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)DerivativeInstrument	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Foreign Currency Derivatives [Abstract]
Foreign currency forward contracts, maturity	1 month
Approximate number of foreign exchange forward contracts per month | DerivativeInstrument	4
Average notional value of foreign exchange forward contracts	$ 10,610,000
Average maturity of foreign exchange forward contracts	9 days
Amount of gain (loss) recognized in earnings on derivatives	$ 159,000	$ (2,722,000)	$ (942,000)

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
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	$ 14,083,000	$ 7,684,000	$ 7,190,000

Share Repurchase Programs - Add

Share Repurchase Programs - Additional Information (Detail) - USD ($)	Feb. 13, 2018	Dec. 31, 2017	Feb. 29, 2016	Feb. 28, 2015	Oct. 31, 2014
Schedule Of Share Repurchase Programs [Line Items]
Common stock repurchase program, authorized amount		$ 0	$ 50,000,000	$ 75,000,000	$ 25,000,000
Subsequent Event [Member]
Schedule Of Share Repurchase Programs [Line Items]
Common stock repurchase program, authorized amount	$ 50,000,000

Share Repurchase Programs - Sum

Share Repurchase Programs - Summary of Shares of Common Stock Repurchased Under Repurchase Programs (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended		36 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017
Equity [Abstract]
Repurchase program, total number of shares purchased	1,891	3,300	5,191
Repurchase program, average price paid per share	$ 26.43	$ 27.83
Repurchase program, approximate dollar value of shares purchased	$ 50,000	$ 91,843	$ 141,843

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
Other commitment, Performance bonds outstanding	$ 1,962,000
Number of months of salary paid as severance	From three to twenty-four months

Supplemental Financial Inform84

Supplemental Financial Information - Summary of Additions and Deductions Related to Allowances for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Allowance for doubtful accounts receivable, Beginning Balance	$ 9,138	$ 11,872	$ 19,336
Allowance for doubtful accounts receivable, Additions	5,245	2,452	6,761
Allowance for doubtful accounts receivable, Deductions	(4,225)	(5,186)	(14,225)
Allowance for doubtful accounts receivable, Ending Balance	$ 10,158	$ 9,138	$ 11,872

Supplemental Financial Inform85

Supplemental Financial Information - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Reduction of the allowance for doubtful accounts	$ 10,158	$ 9,138	$ 11,872	$ 19,336

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, 2017	Dec. 31, 2016	Dec. 31, 2015
Supplemental disclosures of cash flow information:
Cash paid during the year for interest	$ 10,976	$ 3,782	$ 2,866
Cash paid during the year for income taxes, net of refunds	$ 55,470	$ 39,051	$ 41,062

Cash Flows - Additional Informa

Cash Flows - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Supplemental Cash Flow Elements [Abstract]
Capital expenditures in accounts payable, purchased at period end but not yet paid	$ 159,000	$ 791,000	$ 662,000

Segment and Geographic Inform88

Segment and Geographic Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017Segment	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Revenue from External Customer [Line Items]
Number of operating segments | Segment	3
Description of major customers net sales	None of our clients exceeded ten percent of consolidated net sales in 2017, 2016 or 2015.
Product Concentration Risk [Member] | Net Sales [Member]
Revenue from External Customer [Line Items]
Net sales from provision of services	10.00%
APAC Segment [Member] | Hardware Net Sales [Member]
Revenue from External Customer [Line Items]
Reclassified to services		$ 9,000	$ 6,000
APAC Segment [Member] | Software Net Sales [Member]
Revenue from External Customer [Line Items]
Reclassified to services		10,991,000	8,439,000
EMEA Segment [Member] | Software Net Sales [Member]
Revenue from External Customer [Line Items]
Reclassified to services		48,586,000	43,388,000
North America Segment [Member] | Hardware Net Sales [Member]
Revenue from External Customer [Line Items]
Reclassified to services		270,000	24,000
North America Segment [Member] | Software Net Sales [Member]
Revenue from External Customer [Line Items]
Reclassified to services		$ 87,984,000	$ 74,101,000

Segment and Geographic Inform89

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, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue from External Customer [Line Items]
Revenues from external customers	$ 1,784,075	$ 1,757,973	$ 1,684,032	$ 1,477,543	$ 1,467,583	$ 1,392,716	$ 1,456,234	$ 1,168,982	$ 6,703,623	$ 5,485,515	$ 5,373,090
North America Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									5,181,734	3,971,828	3,823,528
North America Segment [Member] | Hardware Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									3,352,355	2,454,889	2,336,764
North America Segment [Member] | Software Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									1,310,118	1,146,808	1,157,168
North America Segment [Member] | Services Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									519,261	370,131	329,596
EMEA Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									1,355,416	1,338,560	1,371,137
EMEA Segment [Member] | Hardware Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									536,500	481,505	531,308
EMEA Segment [Member] | Software Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									710,452	762,427	756,373
EMEA Segment [Member] | Services Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									108,464	94,628	83,456
APAC Segment [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									166,473	175,127	178,425
APAC Segment [Member] | Hardware Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									27,907	18,916	14,327
APAC Segment [Member] | Software Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									101,412	132,718	149,607
APAC Segment [Member] | Services Net Sales [Member]
Revenue from External Customer [Line Items]
Revenues from external customers									$ 37,154	$ 23,493	$ 14,491

Segment and Geographic Inform90

Segment and Geographic Information - Financial Information about Reportable Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total assets	$ 2,685,651				$ 2,219,300				$ 2,685,651	$ 2,219,300
Products									6,038,744	4,997,263	$ 4,945,547
Services									664,879	488,252	427,543
Total net sales	1,784,075	$ 1,757,973	$ 1,684,032	$ 1,477,543	1,467,583	$ 1,392,716	$ 1,456,234	$ 1,168,982	6,703,623	5,485,515	5,373,090
Products									5,512,402	4,571,462	4,513,353
Services									272,651	170,951	143,405
Total costs of goods sold	1,551,192	1,531,892	1,432,653	1,269,316	1,276,614	1,210,908	1,247,017	1,007,874	5,785,053	4,742,413	4,656,758
Gross profit	232,883	226,081	251,379	208,227	190,969	181,808	209,217	161,108	918,570	743,102	716,332
Operating expenses:
Selling and administrative expenses	184,554	180,390	180,752	177,632	145,066	143,872	150,186	146,119	723,328	585,243	584,906
Severance and restructuring expenses	2,791	494	1,022	4,695	1,527	788	909	1,356	9,002	4,580	4,907
Loss on sale of foreign entity		3,646							3,646
Acquisition-related expenses		106	276	2,947	3,706	741			3,329	4,447
Earnings from operations	45,538	$ 41,445	$ 69,329	$ 22,953	40,670	$ 36,407	$ 58,122	$ 13,633	179,265	148,832	126,519
North America Segment [Member]
Segment Reporting Information [Line Items]
Products									4,662,473	3,601,697	3,493,932
Services									519,261	370,131	329,596
Total net sales									5,181,734	3,971,828	3,823,528
Products									4,253,587	3,301,148	3,196,297
Services									236,470	145,199	125,668
Total costs of goods sold									4,490,057	3,446,347	3,321,965
Gross profit									691,677	525,481	501,563
Operating expenses:
Selling and administrative expenses									530,792	401,316	396,603
Severance and restructuring expenses									4,010	2,966	1,126
Acquisition-related expenses									3,223	4,278
Earnings from operations									153,652	116,921	103,834
EMEA Segment [Member]
Segment Reporting Information [Line Items]
Products									1,246,952	1,243,932	1,287,681
Services									108,464	94,628	83,456
Total net sales									1,355,416	1,338,560	1,371,137
Products									1,140,204	1,129,917	1,167,113
Services									24,902	22,956	17,737
Total costs of goods sold									1,165,106	1,152,873	1,184,850
Gross profit									190,310	185,687	186,287
Operating expenses:
Selling and administrative expenses									164,305	160,269	165,879
Severance and restructuring expenses									4,888	1,496	3,781
Loss on sale of foreign entity									3,646
Acquisition-related expenses									106
Earnings from operations									17,365	23,922	16,627
APAC Segment [Member]
Segment Reporting Information [Line Items]
Products									129,319	151,634	163,934
Services									37,154	23,493	14,491
Total net sales									166,473	175,127	178,425
Products									118,611	140,397	149,943
Services									11,279	2,796
Total costs of goods sold									129,890	143,193	149,943
Gross profit									36,583	31,934	28,482
Operating expenses:
Selling and administrative expenses									28,231	23,658	22,424
Severance and restructuring expenses									104	118
Acquisition-related expenses										169
Earnings from operations									8,248	7,989	6,058
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total assets	2,968,984				2,886,422				2,968,984	2,886,422	2,657,604
Operating Segments [Member] | North America Segment [Member]
Segment Reporting Information [Line Items]
Total assets	2,337,573				2,204,351				2,337,573	2,204,351	1,999,485
Operating Segments [Member] | EMEA Segment [Member]
Segment Reporting Information [Line Items]
Total assets	530,242				562,293				530,242	562,293	543,146
Operating Segments [Member] | APAC Segment [Member]
Segment Reporting Information [Line Items]
Total assets	$ 101,169				$ 119,778				$ 101,169	$ 119,778	$ 114,973

Segment and Geographic Inform91

Segment and Geographic Information - Financial Information about Reportable Operating Segments (Parenthetical) (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total assets	$ 2,685,651,000	$ 2,219,300,000
Eliminations, Corporate and Reconciling Items [Member]
Segment Reporting Information [Line Items]
Total assets	$ 283,333,000	$ 667,122,000	$ 643,587,000

Segment and Geographic Inform92

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, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 1,784,075	$ 1,757,973	$ 1,684,032	$ 1,477,543	$ 1,467,583	$ 1,392,716	$ 1,456,234	$ 1,168,982	$ 6,703,623	$ 5,485,515	$ 5,373,090
Total long-lived assets	75,252				70,910				75,252	70,910	88,281
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									4,933,805	3,776,352	3,645,876
Total long-lived assets	50,462				46,774				50,462	46,774	58,748
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									684,632	671,999	711,957
Total long-lived assets	14,783				13,570				14,783	13,570	16,810
Other Foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,085,186	1,037,164	1,015,257
Total long-lived assets	$ 10,007				$ 10,566				$ 10,007	$ 10,566	$ 12,723

Segment and Geographic Inform93

Segment and Geographic Information - Pre-Tax Depreciation and Amortization by Operating Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Depreciation and amortization of property and equipment	$ 25,787	$ 27,493	$ 26,649
Amortization of intangible assets	16,812	10,637	11,308
Depreciation and amortization, total	42,599	38,130	37,957
North America Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization of property and equipment	20,241	21,952	22,239
Amortization of intangible assets	15,971	8,139	8,053
EMEA Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization of property and equipment	5,025	4,908	3,757
Amortization of intangible assets	73	1,951	2,834
APAC Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization of property and equipment	521	633	653
Amortization of intangible assets	$ 768	$ 547	$ 421

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($)	Sep. 26, 2017	Jan. 06, 2017	Sep. 01, 2016	Oct. 01, 2015	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Business acquisition cash purchase price								$ 186,932,000	$ 10,297,000	$ 44,221,000
Goodwill					$ 131,431,000		$ 62,645,000	131,431,000	62,645,000
Amortization expense								16,812,000	10,637,000	11,308,000
Reduction in goodwill balance due to adjustment in purchase price allocation						$ 945,000		0
Goodwill recorded in acquisition								68,786,000	6,450,000
North America Segment [Member]
Business Acquisition [Line Items]
Goodwill					119,828,000		55,688,000	119,828,000	55,688,000
Amortization expense								$ 15,971,000	8,139,000	8,053,000
Business acquisition, effective date of acquisition								Jan. 6, 2017
Goodwill recorded in acquisition								$ 64,140,000
Acquisitions purchase price adjustment									507,000
APAC Segment [Member]
Business Acquisition [Line Items]
Goodwill					7,562,000		6,957,000	7,562,000	6,957,000
Amortization expense								768,000	$ 547,000	421,000
Business acquisition, effective date of acquisition									Sep. 1, 2016
Working capital adjustment								35,000
Goodwill recorded in acquisition								605,000	$ 6,957,000
EMEA Segment [Member]
Business Acquisition [Line Items]
Goodwill					4,041,000			4,041,000
Amortization expense								$ 73,000	1,951,000	$ 2,834,000
Business acquisition, effective date of acquisition								Sep. 26, 2017
Goodwill recorded in acquisition								$ 4,041,000
Caase Group, B.V. [Member]
Business Acquisition [Line Items]
Business acquisition cash purchase price	$ 6,038,000
Caase Group, B.V. [Member] | EMEA Segment [Member]
Business Acquisition [Line Items]
Business acquisition cash purchase price	6,038,000
Net assets acquired	2,107,000
Cash acquired	68,000
Acquired identifiable intangible assets	2,039,000
Decrease in fair value of acquired identifiable intangible assets					193,000
Goodwill					$ 4,041,000			4,041,000
Caase Group, B.V. [Member] | EMEA Segment [Member] | Scenario, Previously Reported [Member]
Business Acquisition [Line Items]
Goodwill	$ 4,117,000
Caase Group, B.V. [Member] | Customer Relationships [Member] | EMEA Segment [Member]
Business Acquisition [Line Items]
Estimated useful life of acquired intangible assets	8 years
Caase Group, B.V. [Member] | Trade Name [Member] | EMEA Segment [Member]
Business Acquisition [Line Items]
Estimated useful life of acquired intangible assets	8 years
Caase Group, B.V. [Member] | Non-compete Agreements [Member] | EMEA Segment [Member]
Business Acquisition [Line Items]
Estimated useful life of acquired intangible assets	8 years
Datalink [Member]
Business Acquisition [Line Items]
Business acquisition cash purchase price		$ 257,456,000
Cash acquired		76,597,000
Goodwill		64,140,000
Estimated fair value of deferred revenue		65,500,000
Estimated fair value of deferred costs		48,029,000
Identified intangible assets		94,500,000
Amortization expense								11,520,000
Business combination, net sales from acquired entity								524,281,000
Business combination, gross profit from acquired entity								$ 118,917,000
Datalink [Member] | North America Segment [Member]
Business Acquisition [Line Items]
Goodwill		64,140,000
Datalink [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Identified intangible assets		92,200,000
Datalink [Member] | Trade Name [Member]
Business Acquisition [Line Items]
Identified intangible assets		2,200,000
Datalink [Member] | Non-compete Agreements [Member]
Business Acquisition [Line Items]
Identified intangible assets		$ 100,000
Ignia Pty Ltd [Member]
Business Acquisition [Line Items]
Business acquisition cash purchase price			$ 10,804,000
Business acquisition, effective date of acquisition								Sep. 1, 2016
Ignia Pty Ltd [Member] | APAC Segment [Member]
Business Acquisition [Line Items]
Business acquisition cash purchase price			10,804,000
Net assets acquired			5,324,000
Cash acquired			1,463,000
Acquired identifiable intangible assets			4,716,000
Decrease in fair value of acquired identifiable intangible assets							218,000
Goodwill							$ 6,957,000		6,957,000
Business acquisition, effective date of acquisition								Sep. 1, 2016
Working capital adjustment						$ 35,000
Ignia Pty Ltd [Member] | APAC Segment [Member] | Scenario, Previously Reported [Member]
Business Acquisition [Line Items]
Goodwill			$ 7,248,000
Ignia Pty Ltd [Member] | Customer Relationships [Member] | APAC Segment [Member]
Business Acquisition [Line Items]
Estimated useful life of acquired intangible assets			8 years
Ignia Pty Ltd [Member] | Restrictive Covenant Agreements [Member] | APAC Segment [Member]
Business Acquisition [Line Items]
Estimated useful life of acquired intangible assets			27 months
BlueMetal Architects, Inc. [Member]
Business Acquisition [Line Items]
Business acquisition cash purchase price				$ 44,221,000
Net assets acquired				15,412,000
Acquired identifiable intangible assets				15,240,000
Business acquisition, effective date of acquisition										Oct. 1, 2015
Goodwill recorded in acquisition										$ 29,938,000
Tax deductible goodwill				$ 0
BlueMetal Architects, Inc. [Member] | North America Segment [Member]
Business Acquisition [Line Items]
Acquisitions purchase price adjustment									$ 507,000
BlueMetal Architects, Inc. [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Estimated useful life of acquired intangible assets				8 years
BlueMetal Architects, Inc. [Member] | Restrictive Covenant Agreements [Member]
Business Acquisition [Line Items]
Estimated useful life of acquired intangible assets				3 years

Acquisitions - Summary of Purch

Acquisitions - Summary of Purchase Price and Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Jan. 06, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Total purchase price		$ 186,932	$ 10,297	$ 44,221
Fair value of net assets acquired:
Excess purchase price over fair value of net assets acquired ("goodwill")		$ 131,431	$ 62,645
Datalink [Member]
Business Acquisition [Line Items]
Total purchase price	$ 257,456
Fair value of net assets acquired:
Current assets	238,577
Identifiable intangible assets - see description below	94,500
Property and equipment	5,843
Other assets	17,888
Current liabilities	(129,071)
Long-term liabilities, including deferred taxes	(34,421)
Total fair value of net assets acquired	193,316
Excess purchase price over fair value of net assets acquired ("goodwill")	$ 64,140

Acquisitions - Estimated Useful

Acquisitions - Estimated Useful Lives of Identifiable Intangibles (Detail) - Datalink [Member]	12 Months Ended
	Dec. 31, 2017
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years
Trade Name [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	1 year
Non-compete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	1 year

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, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Net sales, As reported	$ 1,784,075	$ 1,757,973	$ 1,684,032	$ 1,477,543	$ 1,467,583	$ 1,392,716	$ 1,456,234	$ 1,168,982	$ 6,703,623	$ 5,485,515	$ 5,373,090
Net earnings, As reported	$ 14,168	$ 22,412	$ 40,255	$ 13,848	$ 21,100	$ 21,635	$ 35,067	$ 6,888	$ 90,683	$ 84,690	$ 75,851
Diluted earnings per share, As reported	$ 0.39	$ 0.62	$ 1.11	$ 0.38	$ 0.59	$ 0.60	$ 0.96	$ 0.18	$ 2.50	$ 2.32	$ 1.98
Datalink [Member]
Business Acquisition [Line Items]
Net sales, As reported									$ 6,703,623	$ 5,485,515	$ 5,373,090
Net sales, Proforma									6,707,533	6,084,484	6,033,750
Net earnings, As reported									90,683	84,690	75,851
Net earnings, Proforma									$ 92,276	$ 85,823	$ 75,696
Diluted earnings per share, As reported									$ 2.50	$ 2.32	$ 1.98
Diluted earnings per share, Proforma									$ 2.55	$ 2.36	$ 1.98

Sale of Foreign Entity - Additi

Sale of Foreign Entity - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of foreign entity	$ 3,646,000	$ 3,646,000
Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of foreign entity	3,646,000
Charge upon release of cumulative translation adjustment	$ 2,903,000

Selected Quarterly Financial 99

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, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 1,784,075	$ 1,757,973	$ 1,684,032	$ 1,477,543	$ 1,467,583	$ 1,392,716	$ 1,456,234	$ 1,168,982	$ 6,703,623	$ 5,485,515	$ 5,373,090
Costs of goods sold	1,551,192	1,531,892	1,432,653	1,269,316	1,276,614	1,210,908	1,247,017	1,007,874	5,785,053	4,742,413	4,656,758
Gross profit	232,883	226,081	251,379	208,227	190,969	181,808	209,217	161,108	918,570	743,102	716,332
Operating expenses:
Selling and administrative expenses	184,554	180,390	180,752	177,632	145,066	143,872	150,186	146,119	723,328	585,243	584,906
Severance and restructuring expenses	2,791	494	1,022	4,695	1,527	788	909	1,356	9,002	4,580	4,907
Loss on sale of foreign entity		3,646							3,646
Acquisition-related expenses		106	276	2,947	3,706	741			3,329	4,447
Earnings from operations	45,538	41,445	69,329	22,953	40,670	36,407	58,122	13,633	179,265	148,832	126,519
Non-operating (income) expense:
Interest income	(346)	(227)	(205)	(431)	(282)	(318)	(216)	(250)	(1,209)	(1,066)	(783)
Interest expense	5,360	5,555	4,326	3,933	2,271	2,517	1,992	1,848	19,174	8,628	7,224
Net foreign currency exchange (gain) loss	(117)	341	251	380	(520)	579	(153)	616	855	522	(393)
Other expense, net	367	339	326	315	311	352	359	268	1,347	1,290	1,295
Earnings before income taxes	40,274	35,437	64,631	18,756	38,890	33,277	56,140	11,151	159,098	139,458	119,176
Income tax expense	26,106	13,025	24,376	4,908	17,790	11,642	21,073	4,263	68,415	54,768	43,325
Net earnings	$ 14,168	$ 22,412	$ 40,255	$ 13,848	$ 21,100	$ 21,635	$ 35,067	$ 6,888	$ 90,683	$ 84,690	$ 75,851
Net earnings per share:
Basic	$ 0.40	$ 0.63	$ 1.13	$ 0.39	$ 0.59	$ 0.61	$ 0.96	$ 0.19	$ 2.54	$ 2.35	$ 2
Diluted	$ 0.39	$ 0.62	$ 1.11	$ 0.38	$ 0.59	$ 0.60	$ 0.96	$ 0.18	$ 2.50	$ 2.32	$ 1.98
Shares used in per share calculations:
Net sales	$ 1,784,075	$ 1,757,973	$ 1,684,032	$ 1,477,543	$ 1,467,583	$ 1,392,716	$ 1,456,234	$ 1,168,982	$ 6,703,623	$ 5,485,515	$ 5,373,090
Costs of goods sold	1,551,192	1,531,892	1,432,653	1,269,316	1,276,614	1,210,908	1,247,017	1,007,874	5,785,053	4,742,413	4,656,758
Gross profit	$ 232,883	$ 226,081	$ 251,379	$ 208,227	$ 190,969	$ 181,808	$ 209,217	$ 161,108	$ 918,570	$ 743,102	$ 716,332
Basic	35,809	35,787	35,765	35,602	35,479	35,474	36,380	37,075	35,741	36,102	37,984
Diluted	36,272	36,203	36,169	36,185	35,963	35,790	36,612	37,386	36,207	36,438	38,275