Datalink (DTLK) 10-K 13 Mar 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Mar. 06, 2015	Jun. 30, 2014
Document and Entity Information
Entity Registrant Name	DATALINK CORP
Entity Central Index Key	1056923
Document Type	10-K
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$198,615,130
Entity Common Stock, Shares Outstanding		22,825,557
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY

BALANCE_SHEETS

BALANCE SHEETS (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets
Cash and cash equivalents	$27,725	$24,871
Short-term investments	22,994	51,214
Accounts receivable, net	171,531	130,380
Net working capital receivable from acquisition	741
Lease receivable	2,482	866
Inventories, net	5,447	4,120
Current deferred customer support contract costs	106,497	89,304
Inventories shipped but not installed	20,035	16,000
Income tax receivable	4,194
Other current assets	3,563	1,279
Total current assets	365,209	318,034
Property and equipment, net	7,244	6,722
Goodwill	48,016	37,780
Finite-lived intangibles, net	16,603	13,509
Deferred customer support contract costs, non-current	58,484	49,044
Deferred taxes	5,660	7,116
Long-term lease receivable	4,016	510
Other assets	759	393
Total assets	505,991	433,108
Current liabilities
Floor plan line of credit	27,656	19,977
Accounts payable	86,266	60,421
Lease payable	2,319	409
Accrued commissions	5,334	7,133
Accrued sales and use tax	4,117	2,067
Accrued expenses, other	7,730	8,033
Income tax payable		11,586
Deferred taxes	1,982	1,694
Customer deposits	3,325	4,240
Current deferred revenue from customer support contracts	131,061	110,567
Other current liabilities	746	187
Total current liabilities	270,536	226,314
Deferred revenue from customer support contracts, non-current	70,663	59,576
Long-term leases payable	3,278	466
Other liabilities, non-current	828	956
Total liabilities	345,305	287,312
Commitments and contingencies (Notes 6, 7, 8, 10 and 11)
Stockholders' equity
Common stock, $0.001 par value, 50,000,000 shares authorized, 22,876,753 and 22,785,422 shares issued and outstanding as of December 31, 2014 and 2013, respectively	23	23
Additional paid-in capital	115,048	111,239
Retained earnings	45,615	34,534
Total stockholders' equity	160,686	145,796
Total liabilities and stockholders' equity	$505,991	$433,108

BALANCE_SHEETS_Parenthetical

BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Balance Sheets
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,876,753	22,785,422
Common stock, shares outstanding	22,876,753	22,785,422

STATEMENTS_OF_OPERATIONS

STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net sales:
Products	$380,631	$373,008	$319,041
Services	249,605	221,176	172,161
Total net sales	630,236	594,184	491,202
Cost of sales:
Cost of products	300,852	291,671	248,286
Cost of services	192,557	168,655	130,890
Total cost of sales	493,409	460,326	379,176
Gross profit	136,827	133,858	112,026
Operating expenses:
Sales and marketing	61,877	60,842	48,553
General and administrative	22,271	20,729	18,227
Engineering	29,128	27,536	22,974
Integration and transaction costs	626	95	359
Amortization of intangibles	6,428	7,251	4,195
Total operating expenses	120,330	116,453	94,308
Earnings from operations	16,497	17,405	17,718
Gain (loss) on settlement related to StraTech acquisition	877	-611
Interest income	278	76	59
Interest/other expense, net	-274	-183	-56
Earnings before income taxes	17,378	16,687	17,721
Income tax expense	6,297	6,642	7,186
Net earnings	$11,081	$10,045	$10,535
Earnings per common share:
Basic (in dollars per share)	$0.51	$0.53	$0.62
Diluted (in dollars per share)	$0.50	$0.52	$0.60
Weighted average common shares outstanding:
Basic (in shares)	21,598	19,078	17,114
Diluted (in shares)	22,039	19,493	17,595

STATEMENTS_OF_STOCKHOLDERS_EQU

STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Common Stock	Additional Paid-in Capital	Retained Earnings	Total
Balances at Dec. 31, 2011	$18,000	$66,213,000	$13,954,000	$80,185,000
Balances (in shares) at Dec. 31, 2011	17,911,000
Payments Related to Tax Withholding for Share-based Compensation				1,065,000
Increase Decrease in Stockholders' Equity
Net earnings			10,535,000	10,535,000
Stock option and restricted stock expense	1,000	2,575,000		2,576,000
Stock option and restricted stock expense (in shares)	578,000
Excess tax benefit from stock compensation		780,000		780,000
Tax withholding payments reimbursed by restricted stock		-1,065,000		-1,065,000
Tax withholding payments reimbursed by restricted stock (in shares)	-127,000
Common shares issued under exercise of stock options		347,000		347,000
Common shares issued under exercise of stock options (in shares)	95,000
Issuance of common stock for StraTech and Bear Data acquisition		2,025,000		2,025,000
Issuance of common stock for StraTech and Bear Data acquisition (in shares)	270,000
Balances at Dec. 31, 2012	19,000	70,875,000	24,489,000	95,383,000
Balances (in shares) at Dec. 31, 2012	18,727,000
Payments Related to Tax Withholding for Share-based Compensation				1,080,000
Increase Decrease in Stockholders' Equity
Net earnings			10,045,000	10,045,000
Stock option and restricted stock expense		4,049,000		4,049,000
Stock option and restricted stock expense (in shares)	333,000
Excess tax benefit from stock compensation		885,000		885,000
Tax withholding payments reimbursed by restricted stock		-1,080,000		-1,080,000
Tax withholding payments reimbursed by restricted stock (in shares)	-100,000
Common shares issued under exercise of stock options		252,000		252,000
Common shares issued under exercise of stock options (in shares)	30,000
Issuance of common stock for secondary offering, net of offering costs	4,000	39,017,000		39,021,000
Issuance of common stock for secondary offering, net of offering costs (in shares)	3,795,000
Stock receivable from settlement of StraTech acquisition		-2,647,000		-2,647,000
Measurement period adjustments for StraTech acquisition		-112,000		-112,000
Balances at Dec. 31, 2013	23,000	111,239,000	34,534,000	145,796,000
Balances (in shares) at Dec. 31, 2013	22,785,000			22,785,422
Payments Related to Tax Withholding for Share-based Compensation				1,735,000
Increase Decrease in Stockholders' Equity
Net earnings			11,081,000	11,081,000
Stock option and restricted stock expense		4,041,000		4,041,000
Stock option and restricted stock expense (in shares)	302,000
Excess tax benefit from stock compensation		817,000		817,000
Tax withholding payments reimbursed by restricted stock		-1,735,000		-1,735,000
Tax withholding payments reimbursed by restricted stock (in shares)	-146,000
Common shares issued under exercise of stock options		89,000		89,000
Common shares issued under exercise of stock options (in shares)	23,000
Issuance of common stock for StraTech and Bear Data acquisition		1,474,000		1,474,000
Issuance of common stock for StraTech and Bear Data acquisition (in shares)	156,000
Forfeiture of common stock related to StraTech acquisition		-877,000		-877,000
Forfeiture of common stock related to StraTech acquisition (Shares)	-243,000
Balances at Dec. 31, 2014	$23,000	$115,048,000	$45,615,000	$160,686,000
Balances (in shares) at Dec. 31, 2014	22,877,000			22,876,753

STATEMENTS_OF_CASH_FLOWS

STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net earnings	$11,081,000	$10,045,000	$10,535,000
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Change in fair value of short-term investments	5,000	-187,000
Provision (benefit) for bad debts	-152,000	115,000	-6,000
Depreciation	2,667,000	2,102,000	1,627,000
Amortization of finite-lived intangibles	6,428,000	7,251,000	4,195,000
(Gain) loss on settlement related to StraTech acquisition	-877,000	611,000
Deferred income taxes	-1,278,000	-9,985,000	262,000
Stock-based compensation expense	4,041,000	4,049,000	2,576,000
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable and leases receivable , net	-30,471,000	12,909,000	-31,544,000
Inventories	-4,587,000	-8,782,000	177,000
Deferred customer support costs/revenues, net	4,033,000	7,630,000	4,440,000
Accounts payable and leases payable	13,150,000	-23,420,000	2,943,000
Accrued expenses	-3,588,000	-814,000	4,629,000
Income tax payable (receivable), net	-15,780,000	14,016,000	-2,025,000
Other	-1,962,000	-270,000	1,007,000
Net cash (used in) provided by operating activities	-17,290,000	15,270,000	-1,184,000
Cash flows from investing activities:
Maturities of short term investments			1,192,000
Sale and maturities of trading securities	108,292,000		2,294,000
Purchases of trading securities	-80,077,000	-51,027,000
Purchases of property and equipment	-2,214,000	-2,742,000	-3,824,000
Payment for acquisitions, net of cash acquired	-12,707,000		-13,172,000
Net cash provided (used in) investing activities	13,294,000	-53,769,000	-13,510,000
Cash flows from financing activities:
Net borrowings (payments) under line of credit		-6,000,000	6,000,000
Net proceeds from floor plan line of credit	7,679,000	19,977,000
Proceeds from stock offering, net of offering costs		39,021,000
Excess tax benefit from stock compensation	817,000	885,000	780,000
Tax withholding payments reimbursed by restricted stock	-1,735,000	-1,080,000	-1,065,000
Proceeds from issuance of common stock from stock option exercise	89,000	252,000	347,000
Net cash provided by financing activities	6,850,000	53,055,000	6,062,000
Increase (decrease) in cash and cash equivalents	2,854,000	14,556,000	-8,632,000
Cash and cash equivalents, beginning of period	24,871,000	10,315,000	18,947,000
Cash and cash equivalents, end of period	27,725,000	24,871,000	10,315,000
Supplementary cash flow information:
Cash paid for income taxes	22,579,000	1,738,000	8,191,000
Cash received for income tax refunds	99,000	11,000	25,000
Cash paid for interest expense	278,000	154,000	25,000
Supplementary non-cash investing and financing activities:
Stock issued as consideration for acquisition	1,474,000		2,025,000
Stock receivable for settlement of StraTech acquisition		2,647,000
Receivable due from seller of Bear Data	$741,000

Summary_of_Significant_Account

Summary of Significant Accounting Policies:	12 Months Ended
	Dec. 31, 2014
Summary of Significant Accounting Policies:
Summary of Significant Accounting Policies:	1.     Summary of Significant Accounting Policies:
	Description of Business:
	Datalink Corporation provides solutions and services that help make data centers more efficient, manageable and responsive to changing business needs. Focused on midsize and large companies, we help companies migrate from physical to virtual data centers, ensure data protection and optimize enterprise networks. The Company derives its revenues principally from designing, installing and supporting data center solutions. The Company's solutions and services span four practices: consolidation and virtualization of data center infrastructures; enhanced data protection; advanced network infrastructures; and business continuity and disaster recovery solutions. Datalink is frequently engaged to consult and provide assistance in the installation of data center solutions and to provide support services subsequent to the installation.
	Recently Issued and Adopted Accounting Standard:
	In June 2014, the FASB issued Accounting Standards Update 2014-12, Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide that a Performance Target Could be Achieved after the Requisite Service Period ("ASU 2014-12"), which requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. Thus, the performance target should not be reflected in estimating the grant date fair value of the award. This update further clarifies that compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. The provisions of this ASU are effective for interim and annual periods beginning after December 15, 2015. Entities can apply the amendment either a) prospectively to all awards granted or modified after the effective date or b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. The Company currently does not anticipate the adoption of this standard will have a material impact on its consolidated financial statements.
	In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers ("ASU No. 2014-09"). The standard outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance. This ASU is intended to provide a more robust framework for addressing revenue issues; improve comparability of revenue recognition practices across entities, industries, jurisdictions and capital markets; and provide more useful information to users of financial statements through improved revenue disclosure requirements. The provisions of this ASU are effective for interim and annual periods beginning after December 15, 2016. The Company is currently determining its implementation approach and assessing the impact on its consolidated financial statements.
	On January 1, 2014, the Company adopted Accounting Standards Update 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists ("ASU 2013-11"), which was issued to eliminate diversity in practice. This update requires that companies net their unrecognized tax benefits against all same-jurisdiction net operating losses or tax credit carryforwards that would be used to settle the position with a tax authority. The adoption of ASU 2013-11 did not have a material impact on the Company's consolidated financial statements.
	Principles of Consolidation:
	The accompanying consolidated financial statements include the Company's consolidated accounts after elimination of intercompany balances and transactions. The consolidated financial statements also include the accounts of all investments in which the Company, either through direct or indirect ownership, have more than a 50% interest or significant influence over the management of those entities.
	Use of Estimates:
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the Company's 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 financial statements and the reported amounts of revenues and expenses during the reporting period. Significant items subject to estimates and assumptions include the reserve for doubtful accounts, reserve for obsolete and slow moving (excess) inventory and impairment analysis of goodwill and long-lived assets. Actual results could differ from those estimates.
	Cash and Cash Equivalents:
	Cash equivalents consist principally of money market funds with original maturities of three months or less, are readily convertible to cash and are stated at cost, which approximates fair value. The Company maintains its cash in bank deposit and money market accounts which, at times, may exceed federally insured limits. In addition, the Company had cash in foreign bank accounts of approximately $64,000 and $0, respectively, at December 31, 2014 and 2013. The Company has not experienced any losses in such accounts.
	Short term Investments:
	The Company's short term investments consist principally of commercial paper, corporate bonds and interest-bearing CDs. The Company categorizes these investments as trading securities and record them at fair value. The Company classifies investments with maturities of 90 days or less from the date of purchase as cash equivalents; investments with maturities of greater than 90 days from the date of purchase but less than one year generally as short term investments; and investments with maturities of greater than one year from the date of purchase generally as long term investments.
	Accounts Receivable, net:
	The Company carries accounts receivable at original invoice amount less an estimate made for doubtful receivables based on a review of all outstanding amounts on a monthly basis. Management determines the allowance for doubtful accounts by regularly evaluating individual customer receivables and considering a customer's financial condition and credit history and current economic conditions. The Company writes off accounts receivable when deemed uncollectible, which is generally in excess of a year past due provided it has no additional information to suggest it should continue to expect customer payment. The Company records recoveries of accounts receivable previously written off when received.
	The Company recorded accounts receivable net of the reserve for doubtful accounts of $460,000 and $331,000 at December 31, 2014 and 2013, respectively.
	Concentration of Credit Risk:
	The Company had no customers that comprised more than 10% of its net sales in 2014, 2013, or 2012. However, the Company's top five customers collectively accounted for 7%, 10%, and 11% of its 2014, 2013, and 2012 revenues, respectively.
	Inventories:
	Inventories, including inventories shipped but not installed, principally consist of data storage products and components, valued at the lower of cost or market with cost determined on a first-in, first-out (FIFO) method. The Company reduced inventories for obsolete and slow moving reserves by $87,000 and $89,000 at December 31, 2014 and 2013, respectively.
	Property and Equipment:
	The Company states property and equipment, including purchased software, at cost. The Company provides for depreciation and amortization by charges to operations using the straight-line method over the estimated useful lives of the assets (ranging from 2 to 10 years). The Company amortizes leasehold improvements on a straight-line basis over the shorter of their estimated useful lives or the underlying lease term. The Company removes the costs and related accumulated depreciation and amortization on asset disposals from the accounts and include any gain or loss in operating expenses. The Company capitalizes major renewals and betterments, but charge maintenance and repairs to current operations when incurred.
			December 31,
			2014			2013
			(in thousands)
	Property and equipment:
	Construction in process		$	445		$	725
	Leasehold improvements			2,479			2,443
	Furniture and fixtures			2,725			2,482
	Equipment			9,041			7,260
	Computers and software			6,601			5,433
				21,291			18,343
	Less accumulated depreciation and amortization			(14,047	)		(11,621	)
			$	7,244		$	6,722
	Goodwill:
	The Company assesses the carrying amount of its goodwill for potential impairment annually or more frequently if events or a change in circumstances indicate that impairment may have occurred. The Company has only one operating and reporting unit that earns revenues, incurs expenses and makes available discrete financial information for review by the Company's chief operations decision maker. Accordingly, the Company completes its goodwill impairment testing on this single reporting unit. The Company's measurement date is December 31st of each year.
	Testing for goodwill impairment is a two step process. The first step screens for potential impairment. If there is an indication of possible impairment, the Company must complete the second step to measure the amount of impairment loss, if any. The first step of the goodwill impairment test, used to identify potential impairment, compares the fair value of the Company's market capitalization with the carrying value of its net assets. If the Company's total market capitalization is at or below the carrying value of its net assets, the Company performs the second step of the goodwill impairment test to measure the amount of impairment loss we record, if any. The Company considers goodwill impairment test estimates critical due to the amount of goodwill recorded on its balance sheet and the judgment required in determining fair value amounts. At each of December 31, 2014 and 2013, the Company determined that its goodwill was not impaired.
	Valuation of Long-Lived Assets:
	The Company performs an impairment test for finite-lived assets and other long-lived assets, such as property and equipment and finite-lived intangible assets, whenever events or changes in circumstances indicate that the Company may not recover the carrying value of such assets. The Company recognizes impairment based on the difference between the fair value of the asset and its carrying value. The Company generally measures fair value based on discounted cash flow analyses. For 2014 and 2013, the Company identified no triggering events that required us to evaluate the impairment of its long-lived assets.
	Stock Compensation Plans:
	The Company utilizes the fair value method of accounting to account for share-based compensation awards. This requires Datalink to measure and recognize in its statements of operations the expense associated with all share-based payment awards made to employees and directors based on estimated fair values. The Company uses the Black-Scholes model to determine the fair value of share-based payment awards. Stock-based compensation expense was $4.0 million, $4.0 million, and $2.6 million for 2014, 2013, and 2012, respectively.
	Income Taxes:
	The Company calculates income taxes using the asset and liability method of accounting for income taxes. Under the liability method, the Company records deferred income taxes to reflect the tax consequences in future years of temporary differences between the tax bases of assets and liabilities and their financial reporting amounts using enacted tax rates for the years in which it expects these items to affect taxable income. The Company establishes valuation allowances when necessary to reduce deferred tax assets to the amount it expects more likely than not to realize. Income tax expense is the tax payable for the period and the change during the period in deferred tax assets and liabilities.
	Uncertain Tax Positions:
	The Company utilizes a two-step approach to recognizing and measuring uncertain tax positions (tax contingencies). The first step evaluates the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the Company will sustain the position on audit, including resolution of related appeals or litigation processes. The second step measures the tax benefit as the largest amount more than 50% likely of being realized upon ultimate settlement. Included in the balance of unrecognized tax benefits at December 31, 2014 are potential benefits of $236,000 that if recognized, would affect the effective tax rate. The Company does not anticipate that the total amount of unrecognized tax benefits as of December 31, 2014 will change significantly in the next 12 months. At December 31, 2013, the Company had no unrecognized tax benefits which would affect its effective tax rate if recognized. The Company has no accrued interest and penalties as of December 31, 2014 and 2013. To the extent the company accrues interest and penalties, the Company recognizes accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense.
	Revenue Recognition:
	Product Sales.    The Company sells software and hardware products on both a "free-standing" basis without any services and as data center solutions bundled with installation and configuration services ("bundled arrangements"). Under either arrangement, the Company recognizes revenue from the sales of products, primarily hardware and essential software, when persuasive evidence of an arrangement exists, shipment has occurred and title has transferred, the sales price is fixed or determinable, and collection of the resulting receivable is reasonably assured. In customer arrangements where a formal acceptance of products is required by the customer, revenue is recognized upon meeting such acceptance criteria.
	Service Sales.    In addition to installation and configuration services provided by us or third party vendors as part of its bundled arrangements, the Company's service sales include postcontract customer support ("PCS") and consulting services. On the Company's balance sheet, deferred revenue relates to PCS for which customers have paid or have been invoiced but for which the Company has not yet recognized the applicable services revenue. Revenue from extended service contracts is recognized ratably over the contract term, generally one to three years. Professional services are offered under time and material or fixed fee-based contracts or as part of multiple-element arrangements. Professional services revenue is recognized as services are performed when sold on a stand-alone basis. The Company's service sales include customer support contracts and consulting services.
	Postcontract Customer Support Contracts.    When the Company sells hardware and/or software products to its customers, it enter into service contracts with them. These contracts are support service agreements. A majority of the time, the Company's internal support desk first assists the customer by performing an initial technical triage to determine the source of the problem and whether we can direct the customer on how to fix the problem. If the Company's internal support desk cannot solve the problem, it transfers the customer to the manufacturer or its designated service organization.
	When the Company does not provide "first call" assistance, usually because the manufacturer has not authorized us to do so, the Company's customers call the manufacturer or its designated service organization directly for both the initial technical triage and any follow-up assistance. If the customer calls the Company first, we transfer the customer to the third party.
	In both scenarios above, the Company purchases third party support contracts from the manufacturers for their services. In accordance with the Company's agreements, and consistent with standard industry practice, the Company prepays the third party based on its "list price" for maintenance on the specific hardware or software products the Company has sold, less the Company's negotiated discounts with the third party. Terms are generally net 30 days. If the Company provides the initial "first call" services, its discounts off of list price are more substantial. In all cases, the Company is the primary obligor in the transaction. The customer ultimately holds the Company responsible for fulfillment of the third party support contracts and we bear credit risk in the event of nonpayment by the customer.
	The Company reports customer support contract revenue on a gross basis as there are sufficient indicators in accumulation that we should be reporting these revenues on a gross basis in accordance with ASC Topic 605-45, Reporting Revenue Gross as a Principle versus Net as an Agent. The Company usually presents quotations for maintenance arrangements to its customers without differentiating as to whether the Company, or a third party, are providing the service. Accordingly, the Company is, from its customers' perspectives, the primary obligor on its maintenance arrangements. The Company directly enters into the agreements with its customers to provide maintenance services. In all cases, the Company sets the price to its customer for the maintenance arrangements, whether or not the Company provides its first call services, and bills its customers for the maintenance arrangement. The Company owes various third parties regardless of whether it collects from its customer. The Company is also contractually obligated to provide or arrange to provide these underlying support services to its customers in the unlikely event that the manufacturer or its designated service organization, fails to perform according to the terms of Datalink's contract.
	When the Company sells a service contract as part of a bundled arrangement, it uses vendor specific objective evidence ("VSOE") to allocate revenue to the service contract element. In all cases, the Company defers revenues and incremental direct costs resulting from obtaining its service contracts and amortizes them into operations over the term of the contracts, which are generally twelve months. The Company defers customer support costs as allowed under ASC Topic 605-10-S99 based on the guidance in ASC Topic 605-20. The deferred costs it capitalizes consist of direct and incremental costs it prepays to third parties for direct support to its customers under its contract terms. The Company defers its customer support contract revenues and their related costs because significant obligations remain after contract execution. For example, the Company provides routine help desk assistance to its customers and assists them in contacting the Company's vendors for additional support services.
	Consulting Services.    Some customers engage the Company to analyze their existing data center architectures and offer recommendations. Other customers engage the Company to assist them on-site with extended data center infrastructure projects, to support their data center environments and to help with long-term data center design challenges. For these types of consulting services that do not include the sale of hardware or software products, the Company recognizes revenues as it performs these services.
	Multiple Element Arrangements. In October 2009, the FASB amended the Accounting Standards Codification ("ASC") as summarized in Accounting Standards Update ("ASU") No. 2009-14, Software (Topic 985): Certain Revenue Arrangements That Include Software Elements, and ASU No. 2009-13, Revenue Recognition (Topic 605): Multiple-Deliverable Revenue Arrangements. ASU 2009-14 amended industry specific revenue accounting guidance for software and software related transactions to exclude from its scope tangible products containing software components and non-software components that function together to deliver the product's essential functionality, or what the Company refers to as essential software. The Company also sell non-essential software, which continues to be in the scope of ASC 985-605. ASU 2009-13 amended the accounting for multiple-element arrangements to provide guidance on how the deliverables in an arrangement should be separated and eliminates the use of the residual method. ASU 2009-13 also required an entity to allocate revenue using the relative selling price method.
	ASU 2009-13 establishes a hierarchy of evidence to determine the stand-alone selling price of a deliverable based on VSOE, third-party evidence ("TPE"), and the best estimate of selling price ("BESP"). If VSOE is available, it would be used to determine the selling price of a deliverable. If VSOE is not available, the entity would determine whether TPE is available. If so, TPE must be used to determine the selling price. If TPE is not available, then the BESP would be used.
	In certain instances, the Company is not able to establish VSOE for all deliverables in an arrangement with multiple elements. This may be due to infrequent sales of each element separately, not pricing products within a narrow range, or only having a limited sales history. The Company has not consistently established VSOE for any of its products or services, except for PCS.
	When VSOE cannot be established, the Company attempts to determine the standalone selling price for each element based on TPE. TPE is determined based on competitor prices for similar deliverables when sold separately. Generally, the Company's strategy differs from that of its peers and its offerings contain a significant level of customization and differentiation such that the comparable pricing of products with similar functionality cannot be obtained. Furthermore, the Company is unable to reliably determine what similar competitor products' selling prices are on a stand-alone basis. Therefore, the Company is typically not able to determine TPE.
	Since the Company is typically unable to determine VSOE or TPE, the Company uses BESP in its allocation of the arrangement consideration where VSOE or TPE do not exist. Therefore, revenue from these multiple-element arrangements is allocated based on BESP, except for PCS which is allocated based on VSOE. The objective of BESP is to determine the price at which the Company would transact a sale if the product or service were sold on a stand-alone basis. BESP is generally used for offerings that are not typically sold on a stand-alone basis or for new or highly customized offerings. The Company determines BESP for product or service using a cost-plus margin approach. When establishing the methodology used to calculate BESP the Company also considered multiple factors, including, but not limited to, geographies, market conditions, competitive landscape, internal costs, gross margin objectives and pricing practices. The determination of BESP is made through consultation with and formal approval by management.
	The Company regularly reviews VSOE, TPE and BESP and maintains internal controls over the establishment and updates of these estimates. The Company limits the amount of revenue recognized for delivered elements to the amount that is not contingent on the future delivery of products or services, future performance obligations or subject to customer-specified return or refund privileges.
	The Company evaluates each deliverable in an arrangement to determine whether it represents a single unit of accounting. The delivered item constitutes a separate unit of accounting when it has stand-alone value and there are no customer-negotiated refunds or return rights for the delivered elements. If the arrangement includes a customer-negotiated refund or return right relative to the delivered item and the delivery and performance of the undelivered item is considered probable and substantially in the Company's control, the delivered element would also constitute a separate unit of accounting. In instances when the aforementioned criteria are not met, the deliverable is combined with the undelivered elements and revenue recognition is determined for the combined unit as a single unit of accounting. Allocation of the consideration is determined at arrangement inception on the basis of each unit's relative selling price.
	The Company's multiple-element product offerings include networking hardware with embedded software products, professional services, and PCS, which are considered separate units of accounting. Pursuant to the guidance in ASU 2009-13, when a sales arrangement contains multiple elements, such as products, essential software, PCS and/or professional services, the Company will allocate revenues to each element based on the aforementioned selling price hierarchy.
In multiple-element arrangements that include software that is not essential to the functionality of the products, revenue is initially allocated to each separate unit of accounting using the relative selling prices of each of the deliverables in the arrangement based on the aforementioned selling price hierarchy. Since non-essential software deliverables are in the scope of ASC 985-605, VSOE must exist to account for the non-essential software deliverables as separate units of accounting from one another and further allocate the originally allocated non-essential software fee among the individual non-essential software deliverables. Since the Company was only able to establish VSOE for PCS, the amount allocated to the other non-essential software deliverables would be based on the residual method of allocation using VSOE for PCS. This allocated revenue is recognized once all non-essential software deliverables other than PCS are delivered.
In 2013, the Company began recognizing revenue on certain new professional service contracts that include milestones using a proportional performance method of revenue recognition. Revenues from these fixed price professional service contracts are recognized as services are performed based on the achievement of specified milestones within the contracts and when the customer acknowledges that such criteria have been satisfied. The Company invoices its customer on these projects as agreed-upon project milestones are achieved and accepted by the customer. The Company recognized approximately $6.5 million and $1.2 million, respectively, of services revenues under this method during 2014 and 2013.
Net Earnings Per Share:
The Company computes basic net earnings per share using the weighted average number of shares outstanding. Diluted net earnings per share include the effect of common stock equivalents, if any, for each period. Diluted per share amounts assume the conversion, exercise or issuance of all potential common stock instruments unless their effect is anti-dilutive. The following table computes basic and diluted net earnings per share:
		Year Ended December 31,
		2014			2013			2012
		(in thousands,
		except per share data)
Net earnings		$	11,081		$	10,045		$	10,535
Basic:
Weighted average common shares outstanding			21,598			19,078			17,114
Net earnings per share—basic		$	0.51		$	0.53		$	0.62
Diluted:
Shares used in the computation of basic net earnings per share			21,598			19,078			17,114
Employee and non-employee director stock options			170			163			164
Restricted stock that has not vested			271			252			317
Shares used in the computation of diluted net earnings per share			22,039			19,493			17,595
Net earnings per share—diluted		$	0.50		$	0.52		$	0.60
The Company excluded the following restricted stock grants that have not vested from weighted average common shares outstanding used in the computation of basic net earnings per share:
		Year Ended December 31,
		2014			2013			2012
Restricted stock that has not vested			1,278,680			3,707,641			1,612,362
The Company excluded the following restricted stock grants that have not vested from the computation of diluted earnings per share as their effect would have been anti-dilutive:
		Year Ended December 31,
		2014			2013			2012
Non-vested common stock			37,163			61,000			9,000
Fair Value of Financial Instruments:
Fair value is the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In determining fair value for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and the assumptions that market participants would use when pricing the asset or liability. The Company applies fair value measurements for both financial and nonfinancial assets and liabilities. The Company has no nonfinancial assets or liabilities that require measurement at fair value on a recurring basis as of December 31, 2014.
The fair value of the Company's financial instruments, including cash and cash equivalents, short term investments, accounts receivable, leases receivable, accounts payable, leases payable, line of credit and accrued expenses, approximate cost because of their short maturities.
The Company uses the three-level fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair values. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below:
•	Level 1—Unadjusted quoted prices available in active markets for the identical assets or liabilities at the measurement date.
•	Level 2—Significant other observable inputs available at the measurement date, other than quoted prices included in Level 1, either directly or indirectly.
•	Level 3—Significant unobservable inputs that the Company cannot corroborate by observable market data and thus reflect the use of significant management judgment. The Company generally determines these values using pricing models based on assumptions its management believes other market participants would make.
The fair value hierarchy requires the use of observable market data when available. In instances in which the inputs used to measure fair value fall into different levels of the fair value hierarchy, the Company determines the fair value measurement based on the lowest level input that is significant to the fair value measurement in its entirety. The Company's assessment of the significance of a particular item to the fair value measurement in its entirety requires judgment, including the consideration of inputs specific to the asset or liability. The following table sets forth, by level within the fair value hierarchy, the accounting of the Company's financial assets and/or liabilities at fair value on a recurring basis according to the valuation techniques the Company used to determine their fair value(s):
(In thousands)		Total at Fair			Quoted Prices in			Significant Other		Significant
		Value			Active Markets			Observable		Unobservable
					for Identical			Inputs (Level 2)		Inputs
					Assets (Level 1)					(Level 3)
At December 31, 2014:
Cash and cash equivalents		$	27,725		$	27,725		$	—	$	—
Short term investments			22,994			3,000			19,994		—
Total assets measured at fair value		$	50,719		$	30,725		$	19,994	$	—
At December 31, 2013:
Cash and cash equivalents		$	24,871		$	24,871		$	—	$	—
Short term investments			51,214			15,239			35,975		—
Total assets measured at fair value		$	76,085		$	40,110		$	35,975	$	—
Advertising Costs:
Advertising and promotion costs are charged to operations as incurred. Advertising and promotion costs included in sales and marketing expense for 2014, 2013, and 2012 were $616,000, $683,000, and $559,000, respectively.

Acquisitions

Acquisitions:	12 Months Ended
	Dec. 31, 2014
Acquisitions:
Acquisitions:	2.     Acquisitions:
	Bear Data Solutions, Inc.
	On October 18, 2014, the Company entered into an Agreement and Plan of Merger (the "Merger Agreement") with Bear Data Solutions, Inc. ("Bear Data"). Bear Data is primarily an IT services firm, serving California-based and international customers from offices in San Francisco, San Jose, Irvine and San Diego. A significant portion of its revenues is derived from networking products including Cisco wireless, routing and core switches. The Company recorded an acquisition-related charge of approximately $626,000 during the fourth quarter of 2014.
	The aggregate purchase price for the overall transaction was approximately $13.4 million, including a cash payment of $12.7 million, net of cash acquired, in connection with the merger (the "Preliminary Purchase Price"), which is partially offset by a net working capital receivable from the sellers of $741,000 resulting from the preliminary estimated tangible net asset adjustment as defined by the Merger Agreement. The Preliminary Purchase Price will be subject to certain adjustments to reflect the difference, if any, between the net working capital at closing and target net working capital. An aggregate amount of $2.4 million of the Preliminary Purchase Price was placed into escrow to cover any post-closing adjustment to the Preliminary Purchase Price and indemnification obligations of the securityholders. Pursuant to the Merger Agreement, the sellers of Bear Data are obligated to pay us an amount equal to the difference between the actual tangible net assets on the closing date and the sellers' good faith estimate of net tangible assets as set forth in the Merger Agreement.
	The Company entered into a Common Stock Purchase Agreement (the "Common Stock Purchase Agreement"), also dated as of October 18, 2014, by and among Datalink Corporation, Merger Sub, and three executive securityholders of Bear Data. Under the Common Stock Purchase Agreement, the Company issued 156,360 shares of its common stock with a value of approximately $1.5 million, net of illiquidity adjustments, to the three Bear Data executives. The $13.4 million aggregate purchase price for the overall transaction discussed above includes the $1.5 million issuance of shares to the executive securityholders of Bear Data. For this purpose, the Company's common stock was valued at the volume-weighted average of the per share trading prices of its common stock as reported through Bloomberg (based on all trades in the Company's common stock and not an average of daily averages) for the 20 consecutive full trading days ending one business day prior to closing. These shares had an aggregate value of $1.7 million, offset by a $192,000 illiquidity adjustment. 75% of the shares issued under the Common Stock Purchase Agreement will not be transferable until the first anniversary of closing.
	The Company estimated the fair value of the assets acquired and liabilities assumed of Bear Data primarily using a discounted cash flow approach with respect to identified intangible assets and goodwill. The Company based this approach upon its estimates of future cash flows from the acquired assets and liabilities and utilized a discount rate consistent with the inherent risk associated with the acquired assets and liabilities assumed.
	The fair value of the assets acquired included finite-lived intangibles consisting of $370,000 of covenants not to compete, $890,000 of trademarks, $7,810,000 of customer relationships and $452,200 of order backlog having estimated lives of 3 years, 3 years, 6 years and three months, respectively and an indefinite-lived asset consisting of goodwill of approximately $10.2 million, which is not deductible for tax purposes. The Company is amortizing the covenants not to compete, trademarks, and order backlog using the straight line method. The Company is amortizing the customer relationships it acquired in the Bear Data acquisition over its useful life using an accelerated amortization method, to match the pattern in which the economic benefits of that asset are expected to be consumed. The Company paid a premium over the fair value of the net tangible and identified intangible assets acquired (i.e. goodwill) because it expects this acquisition will significantly increase the Company's West Coast revenue base, expand its Cisco expertise into strategically important new areas, and add more than 1,000 new midmarket and enterprise customers to whom the Company can market its comprehensive portfolio of data center offerings. The Company expects to experience operational synergies and efficiencies through combined general and administrative corporate functions.
	The Company allocated the total estimated purchase consideration to the net assets and liabilities acquired, including finite-lived intangible assets, based on their respective fair values at the acquisition date. The preliminary allocation of the purchase price was based upon a valuation and the Company's estimates and assumptions are subject to change within the purchase price allocation period (generally one year from the acquisition date). The primary areas of the purchase price allocation that are not yet finalized relate to net working capital adjustments and deferred taxes. The following table summarizes the preliminary allocation of the purchase price to the fair value of the assets and liabilities acquired:
		(in thousands)
	Assets acquired at their fair value:
	Accounts receivable, net	$	15,650
	Inventories shipped but not installed		775
	Short term deferred tax assets		935
	Equipment		975
	Finite-lived intangibles		9,522
	Goodwill		10,236
	Other assets		257
	Total assets acquired		38,350
	Liabilities assumed at their fair value:
	Accounts payable		17,188
	Leases payable		229
	Accrued expenses		3,536
	Long-term deferred tax liabilities		3,957
	Total liabilities assumed		24,910
	Preliminary net purchase price	$	13,440
	The following table provides a reconciliation of the cash payment made to the estimated net purchase price for Bear Data:
		(in thousands)
	Payment in cash for purchase	$	16,173
	Less cash acquired		(3,466	)
	Less receivable due from seller		(741	)
	Plus value of shares issued		1,474
	Preliminary net purchase price	$	13,440
	The pro forma consolidated unaudited results of operations as of December 31, 2014 and 2013, assuming consummation of the acquisition of Bear Data as of January 1, 2013 are as follows:
		Year Ended December 31,
		2014			2013
		(in thousands, except per
		share data)
	Net sales	$	796,392		$	719,154
	Net earnings	$	11,779		$	8,733
	Per share data:
	Basic earnings	$	0.55		$	0.46
	Diluted earnings	$	0.53		$	0.45
	Integration costs for 2014 include salaries, benefits and retention bonuses of exiting employees, some of whom assisted with the initial integration of Bear Data. In addition, transaction costs for 2014 include legal, audit, and other outside service fees necessary to complete the Company's acquisition of Bear Data, which were expensed. Total integration and transaction costs were $626,000 during 2014.
	Strategic Technologies, Inc.
	On October 4, 2012, the Company purchased substantially all of the assets and liabilities of Strategic Technologies, Inc. ("StraTech") from StraTech and Midas Medici Group Holdings, Inc. ("Midas," parent company of StraTech, and, together with StraTech, the "Sellers of StraTech"). StraTech is an IT services and solutions firm that shares the Company's focus on optimizing enterprise data centers and IT infrastructure through a common product and services portfolio designed to help customers increase business agility. The Company purchased StraTech for a purchase price of approximately $11.9 million, comprised of a cash payment of approximately $13.2 million, which was offset by a receivable due from the Sellers of StraTech of approximately $3.3 million, resulting from the preliminary tangible net asset adjustment as defined by the asset purchase agreement. In addition, the Company issued 269,783 shares of its common stock with a value of approximately $2.0 million. Of those shares, 242,805 shares were deposited in an escrow account as security for certain indemnification obligations of the Sellers of StraTech.
	Pursuant to the asset purchase agreement, the Sellers of StraTech were obligated to pay us an amount equal to the difference between the actual tangible net assets on the closing date and the Sellers of StraTech's good faith estimate of net tangible assets as set forth in the asset purchase agreement. The Company initially recorded a receivable due from the Sellers of StraTech of approximately $4.2 million related to this payment at the acquisition date. The Sellers of StraTech provided us with a "Notice of Disagreement," which stated that they disputed the amount owed to us in connection with this reconciliation payment. The asset purchase agreement contained an arbitration provision for disputes over the value of tangible net assets. During the measurement period (up to one year from the acquisition date), the final tangible net asset adjustment was agreed to and the net effect was a decrease in the receivable due from the Sellers of StraTech of $936,000 and an increase in the purchase price for the same amount as reflected above.
	The Company estimated the fair value of the assets acquired and liabilities assumed of StraTech primarily using a discounted cash flow approach with respect to identified intangible assets and goodwill. The Company based this approach upon its estimates of future cash flows from the acquired assets and liabilities and utilized a discount rate consistent with the inherent risk associated with the acquired assets and liabilities assumed. As of December 31, 2012, the fair value of the acquired assets was provisional as the Company had not yet finalized net working capital adjustments that are included within the "Notice of Disagreement" discussed above. The total purchase price has been allocated to StraTech's net tangible and identifiable intangible assets based on their estimated fair values as of October 4, 2012, and has been adjusted through the measurement period (up to one year from the acquisition date). Adjustments to provisional amounts during the measurement period that were the result of information that existed as of the acquisitions date require the revision of comparative prior period financial information when reissued in subsequent financial statements. Accordingly, the Company's 2012 balance sheet has been retroactively adjusted to account for those changes. The changes did not impact the Company's Statement of Operations.
	The following table summarizes the final allocation of the purchase price including measurement period adjustments:
		(in thousands)
	Assets acquired at their fair value:
	Accounts receivable, net	$	9,539
	Deferred revenue costs		8,521
	Equipment		432
	Finite-lived intangibles		15,920
	Goodwill		5,334
	Other assets		628
	Total assets acquired		40,374
	Liabilities assumed at their fair value:
	Accounts payable		17,599
	Deferred revenue		10,289
	Accrued expenses		567
	Other liabilities		29
	Total liabilities assumed		28,484
	Net purchase price	$	11,890
The fair value of the assets acquired included a finite-lived intangible asset consisting of customer relationships that have an estimated life of five years and an indefinite-lived asset consisting of goodwill of approximately $5.0 million which will be deductible for tax purposes over a 15-year period. The Company is amortizing the finite-lived intangible asset the Company acquired in the StraTech acquisition over its useful life using an accelerated amortization method, to match the pattern in which the economic benefits of that asset are expected to be consumed. The Company paid a premium over the fair value of the net tangible and identified intangible assets acquired (i.e. goodwill) because this acquisition expanded its market share and physical presence across the Eastern seaboard of the United States and allows the Company to diversify its product offerings from certain manufacturers and expand its high-margin professional and managed services business lines. The Company expects to experience operational synergies and efficiencies through combined general and administrative corporate functions.
The following table provides a reconciliation of the net purchase price for StraTech as compared to the cash payment for purchase:
	(in thousands)
Payment in cash for purchase	$	13,172
Less receivable due from seller		(3,307	)
Plus value of shares issued		2,025
Net purchase price	$	11,890
Integration costs for 2013 and 2012 include salaries, benefits and retention bonuses of exiting employees, some of whom assisted with the initial integration of StraTech. In addition, transaction costs for 2012 include legal, audit and other outside service fees necessary to complete the Company's acquisition of StraTech, which were expensed. Total integration and transaction costs were $95,000 and $359,000 during 2013 and 2012, respectively.
In January 2014, the Company reached a settlement agreement with the former owners of StraTech regarding the disputed amount owed to it in connection with the reconciliation payment mentioned above. Under the terms of the agreement, the former owners of StraTech agreed to release all 242,805 shares of Datalink common stock that were being held in escrow in exchange for a payment of $100,000 and the release of certain other claims. As of December 31, 2013, the remaining $3.3 million receivable due from the Sellers of StraTech was deemed to be uncollectible and written down to the estimated realizable value, which was the fair value of the shares in escrow on December 31, 2013. The remaining receivable of $2,647,000 was reclassified from accounts receivable to equity within the December 31, 2013 balance sheet. The results for 2013 included a $611,000 charge for the write-down of the account receivable due from the Sellers of StraTech to the fair value of the stock on December 31, 2013 and reported as a non-operating expense on the statement of operations. Based on the value of the Company's common stock on the date of the settlement agreement in January 2014, the Company recorded a gain before tax of approximately $877,000 during the first quarter of 2014 as a result of the increase in its stock price from December 31, 2013 to the date the Company repossessed the shares in escrow.

Short_Term_Investments

Short Term Investments:	12 Months Ended
	Dec. 31, 2014
Short Term Investments:
Short-Term Investments:	3.     Short Term Investments:
	The following table summarizes the Company's short term investments (in thousands):
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	December 31, 2014
	Commercial paper	$	19,988	$	6	$	—	$	19,994
	Interest-bearing CDs		3,005		—		5		3,000
	Total	$	22,993	$	6	$	5	$	22,994
	December 31, 2013
	Commercial paper	$	35,979	$	5	$	9	$	35,975
	Corporate bonds		15,422		—		183		15,239
	Total	$	51,401	$	5	$	192	$	51,214
	The Company's $23.0 million of short term investments at December 31, 2014 are comprised of commercial paper and interest-bearing CDs with maturities within one year and interest rates at .5%. The Company's $51.2 million of short term investments at December 31, 2013 were comprised of commercial paper, corporate bonds and interest-bearing CDs with maturities within one year and interest rates ranging from 0.8% to 5.5%.

Intangibles

Intangibles:	12 Months Ended
	Dec. 31, 2014
Intangibles:
Intangibles:	4.     Intangibles:
	The Company had goodwill assets with a recorded value of $48.0 million and $37.8 million as of December 31, 2014 and 2013, respectively. Goodwill activity is summarized as follows:
		(in thousands)
	January 1, 2013	$	37,780
	Additions		10,236
	December 31, 2014	$	48,016
	The Company had finite-lived intangible assets with a net book value of $16.6 million and $13.5 million as of December 31, 2014 and 2013, respectively. The change in the net carrying amount of intangibles during 2014 and 2013 is as follows:
		Year Ended
		December 31,
		2014			2013
		(in thousands)
	Beginning Balance	$	13,509		$	20,760
	Recognized in connection with acquisitions		9,522			—
	Amortization		(6,428	)		(7,251	)
	Ending Balance	$	16,603		$	13,509
	Identified finite-lived intangible asset balances are summarized as follows:
				As of December 31, 2014								As of December 31, 2013
		Amortizable		Gross			Accumulated			Net		Gross		Accumulated			Net
		Period		Assets			Amortization			Assets		Assets		Amortization			Assets
		(years)
	Customer relationships	8-May		$	36,943			(21,776	)	$	15,167	$	29,133		(15,743	)	$	13,390
	Services agreement	4			67			(67	)		—		67		(67	)		—
	Certification	2			467			(467	)		—		467		(467	)		—
	Covenant not to compete	3			848			(504	)		344		478		(359	)		119
	Trademarks	3			1,153			(325	)		828		263		(263	)		—
	Order backlog	3 months-			2,614			(2,350	)		264		2,162		(2,162	)		—
		1 year
	Total identified intangible assets			$	42,092			(25,489	)	$	16,603	$	32,570		(19,061	)	$	13,509
	Amortization expense related to finite-lived intangible assets for 2014, 2013, and 2012 was $6.4 million, $7.3 million, and $4.2 million, respectively. The decrease in amortization of intangibles expenses in 2014 as compared to 2013 is primarily due to the Company's use of an accelerated amortization method in amortizing the customer relationships acquired in the StraTech acquisition. This decrease was partially offset by the acquisition of Bear Data. The finite-lived intangible assets the Company acquired in the Bear Data acquisition consisted of covenants not to compete, trademarks, customer relationships and order backlog having estimated lives of 3 years, 3 years, 6 years and three months, respectively. The Company is amortizing the covenants not to compete, trademarks, and order backlog acquired in the Bear Data acquisition using the straight line method. The Company is amortizing the customer relationships acquired in the Bear Data acquisition using an accelerated amortization method, to match the pattern in which the economic benefits are expected to be consumed. The increase in amortization of intangibles expenses in 2013 as compared to 2012 was primarily due to a full year of amortization related to the StraTech acquisition in late 2012. The finite-lived intangible asset the Company acquired in the StraTech acquisition consisted of customer relationships having an estimated life of 5 years that the Company is amortizing over the useful life of the asset using an accelerated amortization method, to match the pattern in which the economic benefits are expected to be consumed. Expected amortization in each of the next five years is as follows:
		(in thousands)
	2015	$	7,347
	2016		5,157
	2017		2,649
	2018		900
	2019		550
		$	16,603

Income_Taxes

Income Taxes:	12 Months Ended
	Dec. 31, 2014
Income Taxes:
Income Taxes:	5.     Income Taxes:
	The reconciliation of the U.S. federal statutory tax rate to the Company's effective income tax rate is as follows:
		2014			2013			2012
	Tax expense at U.S. statutory rates		35	%		35	%		35	%
	State tax expense, net of federal tax effect		3.4			3.3			5
	Meals and entertainment		1.9			1.7			1
	Gain on settlement related to StraTech acquisition		(3.8	)		—			—
	Non-deductible expenses and other		(0.3	)		(0.2	)		(0.4	)
	Effective tax rate		36.2	%		39.8	%		40.6	%
	Net deferred tax assets consist of the following components as of December 31, 2014 and 2013:
		Year Ended
		December 31,
		2014			2013
		(in thousands)
	Deferred income tax assets:
	Compensation accrual	$	3,823		$	4,281
	Deferred revenue		19,478			16,608
	Net operating loss and credits carryovers		698			50
	Intangibles		—			2,280
	Other		534			573
	Total deferred tax assets		24,533			23,792
	Deferred income tax liabilities:
	Deferred costs		(19,031	)		(16,845	)
	Intangibles		(59	)		—
	Property and equipment		(1,013	)		(861	)
	Other		(752	)		(664	)
	Total deferred tax liabilities		(20,855	)		(18,370	)
	Net deferred income tax assets	$	3,678		$	5,422
	The deferred tax amounts above have been classified in the accompanying balance sheets as follows for 2014 and 2013:
		Year Ended
		December 31,
		2014			2013
		(in thousands)
	Current deferred tax liability	$	(1,982	)	$	(1,694	)
	Noncurrent deferred tax asset		5,660			7,116
	Net deferred tax asset	$	3,678		$	5,422
	The tax expense for 2014, 2013, and 2012 consists of the following:
		Year Ended December 31,
		2014			2013			2012
		(in thousands)
	Current income tax expense:
	United States federal	$	6,591		$	14,142		$	5,773
	State and local		984			2,485			1,151
	Current income tax expense	$	7,575		$	16,627		$	6,924
	Deferred income tax benefit:
	United States federal	$	(1,200	)	$	(8,886	)	$	162
	State and local		(78	)		(1,099	)		100
	Deferred income tax benefit		(1,278	)		(9,985	)		262
	Income tax expense	$	6,297		$	6,642		$	7,186
	A reconciliation of the beginning and ending amounts of gross unrecognized tax benefits for 2014, 2013, and 2012 is presented in the table below:
		Year Ended
		December 31,
		2014			2013			2012
		(in thousands)
	Gross unrecognized tax benefits at January 1	$	—		$	—		$	—
	Increases related to:
	Prior year income tax positions		236			—			—
	Current year income tax positions		—			—			—
	Gross unrecognized tax benefits at December 31	$	236		$	—		$	—
	Included in the balance of unrecognized tax benefits at December 31, 2014 are potential benefits of $236,000 that, if recognized, would affect the effective tax rate. The Company does not anticipate that the total amount of unrecognized tax benefits as of December 31, 2014 will change significantly in the next 12 months. The Company had no accrued interest and penalties as of December 31, 2013 and 2014. To the extent the company accrues interest and penalties, The Company recognizes accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense.
	In assessing the recoverability of deferred tax assets, management considers whether it is more likely than not that the Company will realize some portion or all of the deferred tax assets. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. As of December 31, 2014, the Company had federal and state gross operating carryforwards as a result of the Bear Data acquisition of approximately $1.1 million and $2.4 million, respectively, which will expire between 2033 and 2035 if not fully utilized. As of December 31, 2014, the Company had federal and state credit carryforwards as a result of the Bear Data acquisition of approximately $0.1 million and $0.1 million, respectively, which will expire between 2031 and 2035 for federal purposes if not fully utilized. For 2014 the Company recorded approximately $817,000 to equity for tax expenses associated with the exercise of stock options. For 2013 the Company recorded approximately $885,000 to equity for tax expenses associated with the exercise of stock options. In future periods of taxable earnings, the Company expect to report an income tax provision using an effective tax rate of approximately 40% to 42%.
	The Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. As of December 31, 2014, the Company was no longer subject to federal income tax examinations for taxable years before 2011.
	The Company's ability to utilize a portion of its net operating loss carryforwards to offset future taxable income may be subject to certain limitations under Section 382 of the Internal Revenue Code due to changes in the Company's equity ownership. As a result of the acquisition of Bear Data in October 2014, utilization of U.S. net operating losses and tax credits of Bear Data are subject to annual limitations under Internal Revenue Code Section 382 and 383, respectively.

Operating_Lease_Commitments

Operating Lease Commitments:	12 Months Ended
	Dec. 31, 2014
Operating Lease Commitments:
Operating Lease Commitments:	6.     Operating Lease Commitments:
	The Company's corporate headquarters including its principal technical and support services operations, are located in an office and warehouse facility in Eden Prairie, Minnesota. As of December 31, 2014, the Company's other 35 leased locations, housing sales and technical staff, were small to medium-sized offices. The Company has regional hubs located in the Northeast, South, Mid Central, North Central and West.
	As a result of the Company's acquisition of Bear Data in October 2014, the Company is the successor in interest to seven leases where Bear Data was the tenant, with terms extending through December 2018. These facilities provide the Company with approximately 19,953 additional square feet of office space available for its operations in California and Nevada. As a result of the Company's acquisition of StraTech in October 2012, it is the successor in interest to six leases where StraTech was the tenant. These facilities provide the Company with approximately 27,000 additional square feet of office space available for its operations in Georgia, Alabama, North Carolina, Florida, Maryland, and Tennessee.
	As a result of the Company's acquisition of certain assets of Midwave in October 2011, as tenant, it is the successor in interest to a lease (the "Original Lease") dated August 9, 2010 where Midwave was the tenant. The Original Lease was for 20,851 square feet of office space. In December 2011, the Company entered into a First Amendment to Lease (the "Amendment") to the Original Lease for approximately 32,906 additional square feet of office space ("Expansion Space"), which provides it with approximately 54,000 total square feet available for its operations. The Company moved its corporate headquarters to this new location in April 2012. Under the terms of the Amendment, the term of the Original Lease was extended for 42 months from March 1, 2016 through August 31, 2019 and the term of the lease for the Expansion Space is for seven years and six months, which commenced on March 1, 2012. The Company has the option to extend the term of the Original Lease for an additional five-year term as long as certain conditions are met.
	As of December 31, 2014, future minimum lease payments due under non-cancelable operating leases were as follows:
		Net Lease
		Obligations
		(in thousands)
	2015	$	2,191
	2016		1,507
	2017		1,310
	2018		940
	Thereafter		678
		$	6,626
	Total rent expense, net of sublease income of $38,500, $34,000, and $219,000 in 2014, 2013, and 2012, respectively, is as follows:
		Year Ended December 31,
		2014		2013		2012
		(in thousands)
	Rent expense	$	3,040	$	3,062	$	2,578

Employee_Benefit_Plan

Employee Benefit Plan:	12 Months Ended
	Dec. 31, 2014
Employee Benefit Plan:
Employee Benefit Plan:	7.     Employee Benefit Plan:
	The Company has a defined contribution retirement plan for eligible employees. Employees may contribute up to 60% of their pretax compensation to the 401(k) portion of the plan. Since April 2006, the Company has matched 50% of an employee's contribution up to the first 6% of an employee's eligible compensation. The cost of the Company's contributions to the 401(k) portion of the plan for 2014, 2013, and 2012 was $1.6 million, $1.4 million, and $1.1 million, respectively.

Line_of_Credit

Line of Credit:	12 Months Ended
	Dec. 31, 2014
Line of Credit:
Line of Credit:	8.     Line of Credit:
	On July 17, 2013, the Company entered into a Credit Agreement ("Credit Agreement") with Castle Pines Capital LLC ("CPC"), an affiliate of Wells Fargo Bank, National Association ("Wells Fargo"). The Credit Agreement provided for a channel finance facility ("Channel Finance Facility") and a revolving facility ("Revolving Facility" and, together with the Channel Finance Facility, "Combined Facility") in a maximum combined aggregate amount of $40 million. On January 13, 2015, the Company entered into the First Amendment to Credit Agreement (the "Amended Agreement"), which provides an increase of $10 million to its Combined Facility for a maximum combined aggregate borrowing amount of $50 million. Under the Amended Agreement, borrowing under the Revolving Facility cannot exceed the lesser of (i) $50 million minus the amount outstanding under the Channel Finance Facility or (ii) a borrowing base consisting of 85% of certain eligible accounts and 100% of channel financed inventory, subject to CPC's ability to impose reserves in the future. The Channel Finance Facility will finance certain purchases of inventory by us from vendors approved by CPC and the Revolving Facility may be used for working capital purposes and permitted acquisitions.
	The amounts outstanding under the Revolving Facility bear interest at a per annum rate of 2.0% above Wells Fargo's one-month LIBOR rate (approximately 0.17% at December 31, 2014). Advances under the Channel Finance Facility will not bear interest so long as they are paid by the applicable payment due date and advances that remain outstanding after the applicable payment due date will bear interest at a per annum rate of LIBOR plus 4%. Under the Credit Agreement, the Company was obligated to pay quarterly to CPC an unused commitment fee equal to 0.50% per annum on the average daily unused amount of the Combined Facility, with usage including the sum of any advances under either the Channel Finance Facility or the Revolving Facility. The Amended Agreement eliminates the unused commitment fee. The Combined Facility and certain bank product obligations owed to Wells Fargo or its affiliates are secured by substantially all of the Company's personal property. The Amended Agreement terminates on January 9, 2018 and the Company will be obligated to pay certain prepayment fees if the Credit Agreement is terminated prior to that date.
	The Amended Agreement contains customary representations, warranties, covenants and events of default, including but not limited to, covenants restricting the Company's ability to (i) grant liens on its assets, (ii) make certain fundamental changes, including merging or consolidating with another entity or making any material change in the nature of its business, (iii) make certain dividends or distributions, (iv) make certain loans or investments, (v) guarantee or become liable in any way on certain liabilities or obligations of any other person or entity, or (vi) incur certain indebtedness.
	The Credit Agreement contained certain covenants regarding the Company's financial performance, including (i) a minimum tangible net worth of at least $20 million, (ii) a maximum funded debt to EBITDA of no more than 3.00 to 1.00, and (iii) a minimum quarterly net income of at least $250,000. The Amended Agreement made modifications to those covenants, including (i) an increase of $10 million to the minimum tangible net worth requirement for a total minimum tangible net worth requirement of at least $30 million, (ii) deletion of the maximum funded debt to EBITDA ratio, and (iii) replacement of the minimum quarterly net income requirement with a minimum quarterly free cash flow requirement, which requires us to have free cash flow of at least $5 million at the end of each fiscal quarter for the trailing twelve-month period then ended, commencing December 31, 2014 and continuing at the end of each fiscal quarter thereafter.
	Of the $40 million maximum borrowing amount available at December 31, 2014 under the combined Channel Finance Facility and Revolving Facility, the Company had outstanding advances of $27.7 million and $20.0 million on the Channel Finance Facility at December 31, 2014 and 2013, respectively, related to the purchase of inventory from a vendor.

Stockholders_Equity

Stockholders' Equity:	12 Months Ended
	Dec. 31, 2014
Stockholders' Equity:
Stockholders' Equity:	9.     Stockholders' Equity:
	Common Stock Offering:
	On August 8, 2013, the Company entered into an underwriting agreement relating to the public offering of 3,300,000 shares of its common stock at a price to the public of $11.00 per share, less underwriting discounts. In addition, the Company granted the underwriters a 30-day option to purchase up to an additional 495,000 shares at $11.00 per share to cover over-allotments, if any. On August 14, 2013, the Company completed the offering of 3,795,000 shares of common stock at a price to the public of $11.00 per share. The number of shares sold in the offering includes the underwriters' full exercise of their over-allotment option. The Company received proceeds from the common stock sold by the Company, net of offering costs, of approximately $39.0 million.
	Stock Compensation Plans:
	In May 2011, the Company's shareholders approved its 2011 Incentive Compensation Plan ("2011 Plan"). The 2011 plan replaced the Company's existing 2009 Incentive Compensation Plan ("2009 Plan") and 2000 Director Stock Option Plan (the "Director Plan"), each of which terminated upon approval of the 2011 Plan on May 12, 2011. The Company reserved up to 750,000 initial shares of its common stock for possible issuance under the 2011 Plan and 303,943 shares remaining available for future grants under the 2009 Plan. Awards under the 2011 Plan may consist of options (non-qualified and incentive stock options), stock appreciation rights, or SARs, restricted stock units, performance units, dividend equivalents, annual incentive awards and other share-based awards as determined by the Company's compensation committee. The terms and conditions of each award are set in an award agreement as determined by the compensation committee.
	On May 10, 2012, the Company's shareholders approved an amendment to the 2011 Plan (the "2011 Plan") that increased the number of shares of common stock that may be issued pursuant to awards thereunder from 1,053,943 shares to 1,553,943 shares. As of December 31, 2014, there were 628,440 shares available for grant under the 2011 Plan.
	Time-based Restricted Stock Grants under the Company's 2011 Plan:
	Under the 2011 Plan, eligible employees may be awarded shares of restricted stock. These shares generally vest three to four years after issuance, subject to continuous employment and certain other conditions. In 2014, 2013, and 2012, the Company issued 319,900, 273,500, and 279,428 shares, respectively, of time-based restricted stock to its executive management and certain other employees. Restricted shares are valued at the closing price of the Company's stock on the date of grant and are expensed over the vesting period. Unrecognized compensation expense related to the non-vested stock grants was $4.4 million at December 31, 2014 and is expected to be recognized through October 2018. Compensation expense related to these restricted stock grants was $1.9 million in 2014, $1.9 million in 2013, and $910,000 in 2012.
	Effective January 1, 2014 and pursuant to Deferred Stock Unit ("DSU") Master Agreements, each member of the board of directors may elect to receive DSUs with a fair value equivalent to a percentage of each quarterly installment of the annual cash retainer for non-employee directors to which that member would otherwise be entitled for service as a Datalink director during 2014. In addition, each member of the board of directors may elect to receive a DSU award equal to a percentage of the award of shares of Restricted Stock to which that member would otherwise have been entitled as the equity component of the 2014 annual retainer. The DSUs and DSU awards vest and become non-forfeitable on each of June 30, 2014, September 30, 2014, December 31, 2014 and March 31, 2015, provided the board member remains in service with us. The Company will issue one share in payment and settlement of each vested DSU subject to the Master DSU Agreement following a termination of that board member's service with Datalink.
	In 2014, 2013, and 2012, the Company issued 40,804, 36,000, and 36,000 awards of fully vested common stock to members of the Board of Directors, respectively. Of the 40,804 shares of fully vested stock awarded to member of the Company's Board of Directors during the year ended December 31, 2014, 15,646 shares were DSUs. The Company's non-employee directors receive 6,000 shares of restricted stock for their Board service. The Company issues the annual restricted stock grants on June 30 of each year and they vest one-quarter upon issuance and one-quarter on the following September 30, December 31, and March 31, respectively, provided that the director is still a member of the Board on that date. As of December 31, 2014, 10,500 shares of the 2014 restricted stock grant were not vested. The 2013 and 2012 awards to the Company's directors have all vested. For 2014, 2013, and 2012, total compensation expense for these awards was approximately $484,000, $424,000, and $323,000, respectively.
	Performance-based Restricted Stock Grants under the Company's 2011 Plan, 2009 Plan and Director Plan:
	Under the 2011 Plan, the Company is able to grant performance-based awards of restricted stock to its employees. The purpose of the performance-based grants is to retain key employees and to align key management with shareholders' interests.
	On August 15, 2014, the Company awarded 15,000 shares of restricted stock pursuant to its 2011 Plan to one executive manager. These shares vest as follows: two-thirds, or 10,000 shares, upon achievement of 150% of the non-GAAP operating income target of $32.3 million for 2014. The Company achieved 90% of the 2014 non-GAAP operating income target, which equated to a final 4,000 performance-based shares, which vest as follows: one-third vested upon announcement of the non-GAAP operating income target, one-third vested on the first anniversary of the announcement, and the last third of this subtotal will vest on the second anniversary of the announcement. The remaining one-third of this grant, or 5,000 shares, is subject to time-based vesting (one-third of this subtotal on the first anniversary of the grant date, one-third of this subtotal on the second anniversary of the grant date, and the last third of this subtotal on the third anniversary of the grant date), provided that the individual remains employed by us on these vesting dates. The total fair value of the shares that have not vested under this award is $175,050, comprised of $58,350 for the time-based awards and $116,700 for the performance-based awards. The Company is amortizing the $58,350 fair value of the time-based shares that have not vested as follows: (1) $19,450 through the first anniversary of the grant date (2) $19,450 over the two-year vesting period and (3) $19,450 over the three-year vesting period. For the performance-based shares, the Company is only subjecting to amortization the portion that was attained based on its achievement of 90% of non-GAAP operating income during 2014. The corresponding fair value of the 4,000 performance-based shares the executive manager attained is $46,680 and will vest as follows: (1) $15,560 over the 14-month period for the achievement of the performance objectives and remaining employed by us through the announcement of 2014 financial results, (2) $15,560 over the two-year vesting period (3) $15,560 over the three-year vesting period. Unrecognized compensation expense related to both the performance-based and time-based restricted stock grants in this award was $74,000 at December 31, 2014 and is expected to be recognized through August 2016. Compensation expense related to these restricted stock grants was $31,000 for the year ended December 31, 2014.
	On August 12, 2014, the Company awarded 140,000 shares of restricted stock pursuant to its 2011 Plan to certain managers. One-half of these awards, or 70,000 shares, vest upon each individual manager's achievement of revenue or gross profit objectives for 2014 and remaining employed by us through December 31, 2015. The remaining one-half of these awards, or 70,000 shares, is subject to time-based vesting (50% upon the second grant anniversary date, 25% upon the third grant anniversary date and 25% upon the fourth grant anniversary date), provided that the individual remains employed by the Company on these vesting dates. The total fair value of the shares that have not vested under these awards is $1.6 million, comprised of $809,200 for the time-based awards and $809,200 for the performance-based awards. The Company is amortizing the $809,200 fair value of the time-based shares that have not vested as follows: (1) $404,600 through the second anniversary of the grant date (2) $202,300 over the three-year vesting period and (3) $202,300 over the four-year vesting period. For the performance-based shares, the Company is only subjecting to amortization the portion that was attained based on each individual manager's achievement of revenue and gross profit objectives during 2014. The corresponding fair value of the 17,500 performance-based shares these managers attained is $202,000, which will vest ratably over the 17-month period for the achievement of the performance objectives and remaining employed by us through December 31, 2015. Unrecognized compensation expense related to both the performance-based and time-based restricted stock grants in this award was $836,000 at December 31, 2014 and is expected to be recognized through August 2018. Compensation expense related to these restricted stock grants was $175,000 for the year ended December 31, 2014.
	On December 23, 2013, the Company awarded 171,408 shares of restricted stock pursuant to its 2011 Plan to executive management. These shares vest as follows: two-thirds, or 114,272 shares, upon achievement of 150% of the non-GAAP operating income target of $32.3 million for 2014, with such percentages adjusted according to the matrix approved by the Company's compensation committee during the December 23, 2013 meeting. The Company achieved 90% of the 2014 non-GAAP operating income target, which equated to a final 45,708 performance-based shares, which vest as follows: one-third vested upon announcement of the non-GAAP operating income target, one-third vested on the first anniversary of the announcement, and the last third of this subtotal will vest on the second anniversary of the announcement. The remaining one-third of this grant, or 57,136 shares, is subject to time-based vesting (one-third of this subtotal on the first anniversary of the grant date, one-third of this subtotal on the second anniversary of the grant date, and the last third of this subtotal on the third anniversary of the grant date), provided that the individual remains employed by us on these vesting dates. The total fair value of the shares that have not vested under this award is $1.9 million, comprised of $633,000 for the time-based awards and $1.3 million for the performance-based awards. The Company is amortizing the $633,000 fair value of the time-based shares that have not vested as follows: (1) $211,000 through the first anniversary of the grant date (2) $211,000 over the two-year vesting period and (3) $211,000 over the three-year vesting period. For the performance-based shares, the Company is only subjecting to amortization the portion that was attained based on its achievement of 90% of non-GAAP operating income during 2014. The corresponding fair value of the 45,658 performance-based shares executive management attained is $507,000 and will vest as follows: (1) $169,000 over the 14-month period for the achievement of the performance objectives and remaining employed by us through the announcement of 2014 financial results, (2) $169,000 over the two-year vesting period (3) $169,000 over the three-year vesting period. Unrecognized compensation expense related to both the performance-based and time-based restricted stock grants in this award was $467,000 at December 31, 2014 and is expected to be recognized through February 2017. Compensation expense related to these restricted stock grants was $656,000 and $15,000 for the years ended December 31, 2014 and 2013, respectively.
	On March 11, 2013, the Company awarded 36,000 shares of restricted stock pursuant to its 2011 Plan to certain managers. The restricted stock vests as follows: (1) 50% upon the achievement of the Company's income or gross profit objectives for 2013 and remaining employed by Datalink through December 31, 2014, (2) 25% upon the second grant anniversary date (3) 12.5% upon the third grant anniversary date and (4) 12.5% upon the fourth grant anniversary date. the Company is amortizing the $382,000 fair value of the shares that have not vested as follows: (1) $191,000 over the 22-month period for the achievement of the performance objectives and remaining employed by Datalink through December 31, 2014, (2) $95,000 over the two-year vesting period (3) $48,000 over the three-year vesting period and (4) $48,000 over the four-year vesting period. Unrecognized compensation expense related to the restricted stock grants was $40,000 at December 31, 2014 and is expected to be recognized through March 2017. Compensation expense related to these restricted stock grants was $78,000 and $144,000 for the years ended December 31, 2014 and 2013, respectively.
	On December 4, 2012, the Company awarded approximately 163,000 shares of restricted stock pursuant to its 2011 Plan to executive management. The restricted stock vests as follows: (1) 50% upon the achievement of the Company's predetermined earnings from operations objective for 2013 as approved by the Company's Board of Directors and assuming the individual employee remained employed by Datalink through December 31, 2014, (2) 25% upon the second grant anniversary date, (3) 12.5% upon the third grant anniversary date and (4) 12.5% upon the fourth grant anniversary date. The Company is amortizing the $1.4 million fair value of the shares that have not vested as follows: (1) $680,000 over a 25-month period for the achievement of the performance objectives and assuming the individual employee remained employed by Datalink through December 31, 2014, (2) $340,000 over the two-year vesting period, (3) $170,000 over the three-year vesting period and (4) $170,000 over the four-year vesting period. Unrecognized compensation expense related to the non-vested stock grants was $118,000 at December 31, 2014 and is expected to be recognized through November 2016. Compensation expense related to these restricted stock grants was $514,000, $519,000 and $51,000 for the years ended December 31, 2014, 2013, and 2012, respectively.
	On October 4, 2012, the Company awarded 45,000 shares of restricted stock pursuant to its 2011 Plan to certain managers. The restricted stock vests as follows: (1) 50% upon the achievement of the Company's income or gross profit objectives for 2012 and having remained employed by Datalink through the announcement of the 2012 financial results, (2) 25% upon the second grant anniversary date and (3) 25% upon the third grant anniversary date. The Company is amortizing the $386,000 fair value of the shares that have not vested as follows: (1) $198,000 over the 4.5-month period for the achievement of the performance objectives and having remained employed by Datalink through the announcement of 2012 financial results, (2) $99,000 over the two-year vesting period and (3) $99,000 over the three-year vesting period. Unrecognized compensation expense related to the restricted stock grants was $24,000 at December 31, 2014 and is expected to be recognized through September 2015. Compensation expense related to these restricted stock grants was $68,000, $80,000 and $20,000 for the years ended December 31, 2014, 2013 and 2012, respectively.
	On February 22, 2012, the Company awarded approximately 173,000 shares of restricted stock pursuant to its 2011 Plan to certain members of its executive management team. The restricted stock vests as follows: (1) 50% upon the achievement of the Company's predetermined earnings from operations objective for 2012 as approved by its Board of Directors and assuming the individual employee remained employed by Datalink through December 31, 2013, (2) 25% upon the second grant anniversary date and (3) 25% upon the third grant anniversary date, provided in each case the individual is employed by Datalink on each vesting date. The Company is amortizing the $1.5 million fair value of the shares that have not vested as follows: (1) $750,000 over the 22.5-month period for the achievement of the performance objectives and assuming the individual employee remained employed by Datalink through December 31, 2013, (2) $375,000 over the two-year vesting period and (3) $375,000 over the three-year vesting period. Unrecognized compensation expense related to the non-vested stock grants was $13,000 at December 31, 2014 and is expected to be recognized through February 2015. Compensation expense related to these restricted stock grants was $115,000, $191,000 and $286,000 for the years ended December 31, 2014, 2013 and 2012, respectively.
	On July 17, 2011, the Company awarded 215,000 shares of restricted stock pursuant to its 2011 Plan to certain managers. The restricted stock vests as follows: (1) 39,000 upon the achievement of the Company's income or gross profit objectives for 2011, (2) 88,000 upon the second grant anniversary date and (3) 88,000 upon the third grant anniversary date. The Company is amortizing the $1.6 million fair value of the restricted shares that have not vested as follows: (1) $292,000 over a 6-month vesting period for the achievement of the performance objectives, (2) $658,000 over the two-year vesting period and (3) $658,000 over the three-year vesting period. There was no unrecognized compensation expense related to these restricted stock grants at December 31, 2014. Compensation expense related to these restricted stock grants was $55,000, $297,000, and $309,000 for the years ended December 31, 2014, 2013, and 2012, respectively.
	On January 17, 2011, the Company awarded 209,000 shares of restricted stock pursuant to its 2011 Plan to executive management. The restricted stock vests as follows: (1) 104,500 shares upon the achievement of the Company's predetermined earnings from operations objective for 2011 as approved by its Board of Directors and assuming the individual employee remained employed by Datalink through December 31, 2013, (2) 52,250 upon the second grant anniversary date and (3) 52,250 upon the third grant anniversary date. The Company is amortizing the $1.2 million fair value of the restricted stock as follows: (1) $612,000 over a 12 month vesting period for the achievement of the performance objectives, (2) $306,000 over the two-year vesting period and (3) $306,000 over the three-year vesting period. There was no unrecognized compensation expense related to these restricted stock grants at December 31, 2014. Compensation expense related to these restricted stock grants was $13,000, $313,000, and $459,000 for the years ended December 31, 2014, 2013, and 2012, respectively.
	On August 17, 2010, the Company awarded 25,000 shares of restricted stock pursuant to its 2009 Plan to managers and certain employees. The grants vest upon the achievement of an on-time and on-budget implementation of the new enterprise resource planning ("ERP") system. In addition, the individual employee must have remained employed by Datalink through February 1, 2012. The Company is amortizing the $85,000 fair value of the restricted stock on the date of grant ratably over the eighteen-month vesting period in accordance with specific vesting terms. There was no unrecognized compensation expense related to these restricted stock grants at December 31, 2014. There was no compensation expense related to these restricted stock grants for the years ended December 31, 2014 and 2013. For 2012, compensation expense related to these restricted stock grants was $(56,000).
	The following table summarizes the Company's restricted stock activity for the periods indicated below:
		Number of Shares			Weighted Average
					Grant-Date Fair Value
	Restricted stock at January 1, 2012		1,079,058		$	5.6
	Granted		663,843		$	8.58
	Shares vested		(385,808	)	$	5.66
	Shares cancelled		(109,425	)	$	7.12
	Restricted stock at December 31, 2012		1,247,668		$	7.47
	Granted		480,908		$	11.21
	Shares vested		(316,000	)	$	5.84
	Shares cancelled		(231,061	)	$	8.83
	Restricted stock at December 31, 2013		1,181,515		$	9.17
	Granted		474,900		$	11.37
	Shares vested		(438,710	)	$	7.53
	Shares cancelled		(213,864	)	$	10.96
	Restricted stock at December 31, 2014		1,003,841		$	10.55
	Stock Options:
	The Company had no stock option grants in 2014, 2013, or 2012.
	Total stock-based compensation expense related to stock options was $0, $134,000 and $242,000 for the years ended December 31, 2014, 2013, and 2012, respectively. At December 31, 2014 there were no unrecognized stock-based compensation expense related to stock options.
	The following table summarizes activity under the Company's stock option plans:
		Outstanding Options
		Number of Shares			Range of		Weighted
					Exercise Prices		Average
							Exercise Price
	Balance, December 31, 2011		667,382		$1.44 - $5.21		$	3.52
	Options granted		—		—		$	—
	Options exercised		(95,092	)	$1.44 - $4.36		$	3.66
	Options cancelled		(4,250	)	$3.71 - $4.36		$	4.06
	Balance, December 31, 2012		568,040		$1.80 - $5.21		$	3.49
	Options granted		—		—		$	—
	Options exercised		(77,738	)	$1.80 - $5.00		$	3.23
	Options cancelled		(4,518	)	$3.32 - $3.85		$	3.43
	Balance, December 31, 2013		485,784		$3.32 - $5.21		$	3.54
	Options granted		—		—		$	—
	Options exercised		(22,884	)	$3.32 - $4.30		$	3.88
	Options cancelled		—		—		$	—
	Balance, December 31, 2014		462,900		$3.50 - $5.21		$	3.52
	Options exercisable as of December 31, 2014		462,900		$3.50 - $5.21		$	3.52
	The weighted average remaining contractual life of options outstanding at December 31, 2014 was 4.47 years. At December 31, 2014, the aggregate intrinsic value of options outstanding and exercisable was $4,365,510. Total intrinsic value of options exercised was $202,670, $568,335, and $563,405 for 2014, 2013, and 2012, respectively.

SalesType_Leases_Receivables_a

Sales-Type Leases Receivables and Sales-Leaseback Arrangements	12 Months Ended
	Dec. 31, 2014
Sales-Type Lease Receivables and Sales-Leaseback Arrangements
Sales-Type Leases Receivable and Sales-Leaseback Arrangements	10.   Sales-Type Lease Receivables and Sales-Leaseback Arrangements:
	The Company occasionally enters into sales-type lease agreements with its customers resulting from the sale of certain products. The Company's lease receivables are recorded at net realizable value within the short- and long-term lease receivables balances on the Company's balance sheets and are due in installments over the lives of the leases. Cash received and applied against this receivable balance is recorded within changes in operating assets and liabilities in the net cash provided by operating activities section of the statement of cash flows. Finance income is derived over the term of the sales-type lease arrangement as the unearned income on financed sales-type leases is earned. Unearned income is amortized over the life of the lease using the interest method. The present value of net investment in sales-type lease receivables of $6.1 million and $1.3 million at December 31, 2014 and 2013, respectively, is reflected net of unearned income of $435,000 and $57,000 at December 31, 2014 and 2013, respectively. As of December 31, 2014, scheduled maturities of minimum lease payments receivable were as follows for the fiscal years ended December 31:
		(in thousands)
	2015	$	2,482
	2016		1,889
	2017		1,321
	2018		498
	Thereafter		308
			6,498
	Less: Current portion		(2,482	)
	Long-term sales-type lease receivable	$	4,016
	Lease receivables are individually evaluated for impairment. In the event the Company determines that a lease receivable may not be paid, the Company includes in its allowance an amount for the outstanding balance related to the lease receivable. At December 31, 2014, there were no material amounts past due related to lease receivables.
	The Company's lease receivables typically generate monthly cash inflows with average lease durations of 24 to 36 months. To better match cash outflows related to these receivables, the Company occasionally finances the equipment associated with its leases receivable through sales-leaseback arrangements over a period commensurate with the receivable. Gains associated with these sales are deferred in accordance with the accounting for sales-leaseback transactions and are amortized over the lives of the related lease agreements. As of December 31, 2014, the Company's contractual cash obligations for future minimum lease payments were as follows for the fiscal years ended December 31:
		(in thousands)
	2015	$	2,319
	2016		1,793
	2017		929
	2018		493
	Thereafter		63
			5,597
	Less: Current portion		(2,319	)
	Long-term leases payable	$	3,278
	Of the $5.6 million of contractual cash obligations for future minimum lease payments at December 31, 2014, $416,000 represented interest.

Commitments_and_Contingencies

Commitments and Contingencies:	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies:
Commitments and Contingencies:	11.   Commitments and Contingencies:
	The Company has change of control severance agreements and employment agreements in place with certain executive employees. Under the agreements, an executive is entitled to a severance payment in the event the executive (a) is terminated without cause by us in anticipation of, in connection with, at the time of or within two years after a change of control, or (b) resigns for good reasons arising in anticipation of, in connection with, at the time of or within two years after a change of control.

Quarterly_Financial_Informatio

Quarterly Financial Information (unaudited):	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information (unaudited):
Quarterly Financial Information (unaudited):	12.   Quarterly Financial Information (unaudited):
		March 31			June 30		30-Sep		31-Dec
		(in thousands, except per share data)
	2014
	Net sales	$	139,535		$	159,380	$	144,947	$	186,374
	Gross profit		29,482			35,483		32,333		39,529
	Operating earnings (loss)		(413	)		5,974		4,564		6,372
	Net earnings		301			3,563		3,546		3,671
	Net earnings per share—basic		0.01			0.17		0.16		0.17
	Net earnings per share—diluted		0.01			0.16		0.16		0.17
		March 31			June 30		30-Sep		31-Dec
		(in thousands, except per share data)
	2013
	Net sales	$	133,518		$	147,779	$	139,519	$	173,368
	Gross profit		29,833			33,561		29,805		40,659
	Operating earnings		1,966			4,936		1,155		9,348
	Net earnings		1,098			2,904		818		5,225
	Net earnings per share—basic		0.07			0.17		0.05		0.24
	Net earnings per share—diluted		0.07			0.16		0.05		0.24
		March 31			June 30		30-Sep		31-Dec
		(in thousands, except per share data)
	2012
	Net sales	$	119,088		$	120,042	$	104,774	$	147,298
	Gross profit		27,326			28,033		24,012		32,655
	Operating earnings		3,612			5,411		3,255		5,440
	Net earnings		2,161			3,219		1,923		3,232
	Net earnings per share—basic		0.13			0.19		0.11		0.19
	Net earnings per share—diluted		0.12			0.18		0.11		0.18

Subsequent_Events

Subsequent Events:	12 Months Ended
	Dec. 31, 2014
Subsequent Events:
Subsequent Events:	13.   Subsequent Events:
	None.

SCHEDULE_II_VALUATION_AND_QUAL

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS	12 Months Ended
	Dec. 31, 2014
SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS
SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS
	DATALINK CORPORATION
	SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS
	FOR THE YEARS ENDED DECEMBER 31, 2014, 2013, AND 2012
	Description		Period		Balance at		Additions		Deductions(1)		Balance
					Beginning						at End
					of Period						of Period
	Allowance for Doubtful Accounts			2014	$	330,689	$	151,714	$	22,377	$	460,026
				2013		222,860		115,354		7,525		330,689
				2012		282,196		—		59,336		222,860
	Allowance for Inventory Obsolescence			2014		89,076		131,063		132,762		87,377
					$		$		$		$
				2013		309,501		151,986		372,411		89,076
				2012		416,370		445,453		552,322		309,501
	-1	Deductions reflect write-offs of customer accounts receivables, net of recoveries.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies: (Policies)	12 Months Ended
	Dec. 31, 2014
Summary of Significant Accounting Policies:
Recently Issued and Adopted Accounting Standards:	Recently Issued and Adopted Accounting Standard:
	In June 2014, the FASB issued Accounting Standards Update 2014-12, Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide that a Performance Target Could be Achieved after the Requisite Service Period ("ASU 2014-12"), which requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. Thus, the performance target should not be reflected in estimating the grant date fair value of the award. This update further clarifies that compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. The provisions of this ASU are effective for interim and annual periods beginning after December 15, 2015. Entities can apply the amendment either a) prospectively to all awards granted or modified after the effective date or b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. The Company currently does not anticipate the adoption of this standard will have a material impact on its consolidated financial statements.
	In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers ("ASU No. 2014-09"). The standard outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance. This ASU is intended to provide a more robust framework for addressing revenue issues; improve comparability of revenue recognition practices across entities, industries, jurisdictions and capital markets; and provide more useful information to users of financial statements through improved revenue disclosure requirements. The provisions of this ASU are effective for interim and annual periods beginning after December 15, 2016. The Company is currently determining its implementation approach and assessing the impact on its consolidated financial statements.
	On January 1, 2014, the Company adopted Accounting Standards Update 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists ("ASU 2013-11"), which was issued to eliminate diversity in practice. This update requires that companies net their unrecognized tax benefits against all same-jurisdiction net operating losses or tax credit carryforwards that would be used to settle the position with a tax authority. The adoption of ASU 2013-11 did not have a material impact on the Company's consolidated financial statements.
Principles of Consolidation:	Principles of Consolidation:
	The accompanying consolidated financial statements include the Company's consolidated accounts after elimination of intercompany balances and transactions. The consolidated financial statements also include the accounts of all investments in which the Company, either through direct or indirect ownership, have more than a 50% interest or significant influence over the management of those entities.
Use of Estimates:	Use of Estimates:
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the Company's 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 financial statements and the reported amounts of revenues and expenses during the reporting period. Significant items subject to estimates and assumptions include the reserve for doubtful accounts, reserve for obsolete and slow moving (excess) inventory and impairment analysis of goodwill and long-lived assets. Actual results could differ from those estimates.
Cash and Cash Equivalents:	Cash and Cash Equivalents:
	Cash equivalents consist principally of money market funds with original maturities of three months or less, are readily convertible to cash and are stated at cost, which approximates fair value. The Company maintains its cash in bank deposit and money market accounts which, at times, may exceed federally insured limits. In addition, the Company had cash in foreign bank accounts of approximately $64,000 and $0, respectively, at December 31, 2014 and 2013. The Company has not experienced any losses in such accounts.
Short-Term Investments:	Short term Investments:
	The Company's short term investments consist principally of commercial paper, corporate bonds and interest-bearing CDs. The Company categorizes these investments as trading securities and record them at fair value. The Company classifies investments with maturities of 90 days or less from the date of purchase as cash equivalents; investments with maturities of greater than 90 days from the date of purchase but less than one year generally as short term investments; and investments with maturities of greater than one year from the date of purchase generally as long term investments.
Accounts Receivable, net:	Accounts Receivable, net:
	The Company carries accounts receivable at original invoice amount less an estimate made for doubtful receivables based on a review of all outstanding amounts on a monthly basis. Management determines the allowance for doubtful accounts by regularly evaluating individual customer receivables and considering a customer's financial condition and credit history and current economic conditions. The Company writes off accounts receivable when deemed uncollectible, which is generally in excess of a year past due provided it has no additional information to suggest it should continue to expect customer payment. The Company records recoveries of accounts receivable previously written off when received.
	The Company recorded accounts receivable net of the reserve for doubtful accounts of $460,000 and $331,000 at December 31, 2014 and 2013, respectively.
Concentration of Credit Risk:	Concentration of Credit Risk:
	The Company had no customers that comprised more than 10% of its net sales in 2014, 2013, or 2012. However, the Company's top five customers collectively accounted for 7%, 10%, and 11% of its 2014, 2013, and 2012 revenues, respectively.
Inventories:	Inventories:
	Inventories, including inventories shipped but not installed, principally consist of data storage products and components, valued at the lower of cost or market with cost determined on a first-in, first-out (FIFO) method. The Company reduced inventories for obsolete and slow moving reserves by $87,000 and $89,000 at December 31, 2014 and 2013, respectively.
Property and Equipment:	Property and Equipment:
	The Company states property and equipment, including purchased software, at cost. The Company provides for depreciation and amortization by charges to operations using the straight-line method over the estimated useful lives of the assets (ranging from 2 to 10 years). The Company amortizes leasehold improvements on a straight-line basis over the shorter of their estimated useful lives or the underlying lease term. The Company removes the costs and related accumulated depreciation and amortization on asset disposals from the accounts and include any gain or loss in operating expenses. The Company capitalizes major renewals and betterments, but charge maintenance and repairs to current operations when incurred.
			December 31,
			2014			2013
			(in thousands)
	Property and equipment:
	Construction in process		$	445		$	725
	Leasehold improvements			2,479			2,443
	Furniture and fixtures			2,725			2,482
	Equipment			9,041			7,260
	Computers and software			6,601			5,433
				21,291			18,343
	Less accumulated depreciation and amortization			(14,047	)		(11,621	)
			$	7,244		$	6,722
Goodwill:	Goodwill:
	The Company assesses the carrying amount of its goodwill for potential impairment annually or more frequently if events or a change in circumstances indicate that impairment may have occurred. The Company has only one operating and reporting unit that earns revenues, incurs expenses and makes available discrete financial information for review by the Company's chief operations decision maker. Accordingly, the Company completes its goodwill impairment testing on this single reporting unit. The Company's measurement date is December 31st of each year.
	Testing for goodwill impairment is a two step process. The first step screens for potential impairment. If there is an indication of possible impairment, the Company must complete the second step to measure the amount of impairment loss, if any. The first step of the goodwill impairment test, used to identify potential impairment, compares the fair value of the Company's market capitalization with the carrying value of its net assets. If the Company's total market capitalization is at or below the carrying value of its net assets, the Company performs the second step of the goodwill impairment test to measure the amount of impairment loss we record, if any. The Company considers goodwill impairment test estimates critical due to the amount of goodwill recorded on its balance sheet and the judgment required in determining fair value amounts. At each of December 31, 2014 and 2013, the Company determined that its goodwill was not impaired.
Valuation of Long-Lived Assets:	Valuation of Long-Lived Assets:
	The Company performs an impairment test for finite-lived assets and other long-lived assets, such as property and equipment and finite-lived intangible assets, whenever events or changes in circumstances indicate that the Company may not recover the carrying value of such assets. The Company recognizes impairment based on the difference between the fair value of the asset and its carrying value. The Company generally measures fair value based on discounted cash flow analyses. For 2014 and 2013, the Company identified no triggering events that required us to evaluate the impairment of its long-lived assets.
Stock Compensation Plans:	Stock Compensation Plans:
	The Company utilizes the fair value method of accounting to account for share-based compensation awards. This requires Datalink to measure and recognize in its statements of operations the expense associated with all share-based payment awards made to employees and directors based on estimated fair values. The Company uses the Black-Scholes model to determine the fair value of share-based payment awards. Stock-based compensation expense was $4.0 million, $4.0 million, and $2.6 million for 2014, 2013, and 2012, respectively.
Income Taxes:	Income Taxes:
	The Company calculates income taxes using the asset and liability method of accounting for income taxes. Under the liability method, the Company records deferred income taxes to reflect the tax consequences in future years of temporary differences between the tax bases of assets and liabilities and their financial reporting amounts using enacted tax rates for the years in which it expects these items to affect taxable income. The Company establishes valuation allowances when necessary to reduce deferred tax assets to the amount it expects more likely than not to realize. Income tax expense is the tax payable for the period and the change during the period in deferred tax assets and liabilities.
Uncertain Tax Positions:	Uncertain Tax Positions:
	The Company utilizes a two-step approach to recognizing and measuring uncertain tax positions (tax contingencies). The first step evaluates the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the Company will sustain the position on audit, including resolution of related appeals or litigation processes. The second step measures the tax benefit as the largest amount more than 50% likely of being realized upon ultimate settlement. Included in the balance of unrecognized tax benefits at December 31, 2014 are potential benefits of $236,000 that if recognized, would affect the effective tax rate. The Company does not anticipate that the total amount of unrecognized tax benefits as of December 31, 2014 will change significantly in the next 12 months. At December 31, 2013, the Company had no unrecognized tax benefits which would affect its effective tax rate if recognized. The Company has no accrued interest and penalties as of December 31, 2014 and 2013. To the extent the company accrues interest and penalties, the Company recognizes accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense.
Revenue Recognition:	Revenue Recognition:
	Product Sales.    The Company sells software and hardware products on both a "free-standing" basis without any services and as data center solutions bundled with installation and configuration services ("bundled arrangements"). Under either arrangement, the Company recognizes revenue from the sales of products, primarily hardware and essential software, when persuasive evidence of an arrangement exists, shipment has occurred and title has transferred, the sales price is fixed or determinable, and collection of the resulting receivable is reasonably assured. In customer arrangements where a formal acceptance of products is required by the customer, revenue is recognized upon meeting such acceptance criteria.
	Service Sales.    In addition to installation and configuration services provided by us or third party vendors as part of its bundled arrangements, the Company's service sales include postcontract customer support ("PCS") and consulting services. On the Company's balance sheet, deferred revenue relates to PCS for which customers have paid or have been invoiced but for which the Company has not yet recognized the applicable services revenue. Revenue from extended service contracts is recognized ratably over the contract term, generally one to three years. Professional services are offered under time and material or fixed fee-based contracts or as part of multiple-element arrangements. Professional services revenue is recognized as services are performed when sold on a stand-alone basis. The Company's service sales include customer support contracts and consulting services.
	Postcontract Customer Support Contracts.    When the Company sells hardware and/or software products to its customers, it enter into service contracts with them. These contracts are support service agreements. A majority of the time, the Company's internal support desk first assists the customer by performing an initial technical triage to determine the source of the problem and whether we can direct the customer on how to fix the problem. If the Company's internal support desk cannot solve the problem, it transfers the customer to the manufacturer or its designated service organization.
	When the Company does not provide "first call" assistance, usually because the manufacturer has not authorized us to do so, the Company's customers call the manufacturer or its designated service organization directly for both the initial technical triage and any follow-up assistance. If the customer calls the Company first, we transfer the customer to the third party.
	In both scenarios above, the Company purchases third party support contracts from the manufacturers for their services. In accordance with the Company's agreements, and consistent with standard industry practice, the Company prepays the third party based on its "list price" for maintenance on the specific hardware or software products the Company has sold, less the Company's negotiated discounts with the third party. Terms are generally net 30 days. If the Company provides the initial "first call" services, its discounts off of list price are more substantial. In all cases, the Company is the primary obligor in the transaction. The customer ultimately holds the Company responsible for fulfillment of the third party support contracts and we bear credit risk in the event of nonpayment by the customer.
	The Company reports customer support contract revenue on a gross basis as there are sufficient indicators in accumulation that we should be reporting these revenues on a gross basis in accordance with ASC Topic 605-45, Reporting Revenue Gross as a Principle versus Net as an Agent. The Company usually presents quotations for maintenance arrangements to its customers without differentiating as to whether the Company, or a third party, are providing the service. Accordingly, the Company is, from its customers' perspectives, the primary obligor on its maintenance arrangements. The Company directly enters into the agreements with its customers to provide maintenance services. In all cases, the Company sets the price to its customer for the maintenance arrangements, whether or not the Company provides its first call services, and bills its customers for the maintenance arrangement. The Company owes various third parties regardless of whether it collects from its customer. The Company is also contractually obligated to provide or arrange to provide these underlying support services to its customers in the unlikely event that the manufacturer or its designated service organization, fails to perform according to the terms of Datalink's contract.
	When the Company sells a service contract as part of a bundled arrangement, it uses vendor specific objective evidence ("VSOE") to allocate revenue to the service contract element. In all cases, the Company defers revenues and incremental direct costs resulting from obtaining its service contracts and amortizes them into operations over the term of the contracts, which are generally twelve months. The Company defers customer support costs as allowed under ASC Topic 605-10-S99 based on the guidance in ASC Topic 605-20. The deferred costs it capitalizes consist of direct and incremental costs it prepays to third parties for direct support to its customers under its contract terms. The Company defers its customer support contract revenues and their related costs because significant obligations remain after contract execution. For example, the Company provides routine help desk assistance to its customers and assists them in contacting the Company's vendors for additional support services.
	Consulting Services.    Some customers engage the Company to analyze their existing data center architectures and offer recommendations. Other customers engage the Company to assist them on-site with extended data center infrastructure projects, to support their data center environments and to help with long-term data center design challenges. For these types of consulting services that do not include the sale of hardware or software products, the Company recognizes revenues as it performs these services.
	Multiple Element Arrangements. In October 2009, the FASB amended the Accounting Standards Codification ("ASC") as summarized in Accounting Standards Update ("ASU") No. 2009-14, Software (Topic 985): Certain Revenue Arrangements That Include Software Elements, and ASU No. 2009-13, Revenue Recognition (Topic 605): Multiple-Deliverable Revenue Arrangements. ASU 2009-14 amended industry specific revenue accounting guidance for software and software related transactions to exclude from its scope tangible products containing software components and non-software components that function together to deliver the product's essential functionality, or what the Company refers to as essential software. The Company also sell non-essential software, which continues to be in the scope of ASC 985-605. ASU 2009-13 amended the accounting for multiple-element arrangements to provide guidance on how the deliverables in an arrangement should be separated and eliminates the use of the residual method. ASU 2009-13 also required an entity to allocate revenue using the relative selling price method.
	ASU 2009-13 establishes a hierarchy of evidence to determine the stand-alone selling price of a deliverable based on VSOE, third-party evidence ("TPE"), and the best estimate of selling price ("BESP"). If VSOE is available, it would be used to determine the selling price of a deliverable. If VSOE is not available, the entity would determine whether TPE is available. If so, TPE must be used to determine the selling price. If TPE is not available, then the BESP would be used.
	In certain instances, the Company is not able to establish VSOE for all deliverables in an arrangement with multiple elements. This may be due to infrequent sales of each element separately, not pricing products within a narrow range, or only having a limited sales history. The Company has not consistently established VSOE for any of its products or services, except for PCS.
	When VSOE cannot be established, the Company attempts to determine the standalone selling price for each element based on TPE. TPE is determined based on competitor prices for similar deliverables when sold separately. Generally, the Company's strategy differs from that of its peers and its offerings contain a significant level of customization and differentiation such that the comparable pricing of products with similar functionality cannot be obtained. Furthermore, the Company is unable to reliably determine what similar competitor products' selling prices are on a stand-alone basis. Therefore, the Company is typically not able to determine TPE.
	Since the Company is typically unable to determine VSOE or TPE, the Company uses BESP in its allocation of the arrangement consideration where VSOE or TPE do not exist. Therefore, revenue from these multiple-element arrangements is allocated based on BESP, except for PCS which is allocated based on VSOE. The objective of BESP is to determine the price at which the Company would transact a sale if the product or service were sold on a stand-alone basis. BESP is generally used for offerings that are not typically sold on a stand-alone basis or for new or highly customized offerings. The Company determines BESP for product or service using a cost-plus margin approach. When establishing the methodology used to calculate BESP the Company also considered multiple factors, including, but not limited to, geographies, market conditions, competitive landscape, internal costs, gross margin objectives and pricing practices. The determination of BESP is made through consultation with and formal approval by management.
	The Company regularly reviews VSOE, TPE and BESP and maintains internal controls over the establishment and updates of these estimates. The Company limits the amount of revenue recognized for delivered elements to the amount that is not contingent on the future delivery of products or services, future performance obligations or subject to customer-specified return or refund privileges.
	The Company evaluates each deliverable in an arrangement to determine whether it represents a single unit of accounting. The delivered item constitutes a separate unit of accounting when it has stand-alone value and there are no customer-negotiated refunds or return rights for the delivered elements. If the arrangement includes a customer-negotiated refund or return right relative to the delivered item and the delivery and performance of the undelivered item is considered probable and substantially in the Company's control, the delivered element would also constitute a separate unit of accounting. In instances when the aforementioned criteria are not met, the deliverable is combined with the undelivered elements and revenue recognition is determined for the combined unit as a single unit of accounting. Allocation of the consideration is determined at arrangement inception on the basis of each unit's relative selling price.
	The Company's multiple-element product offerings include networking hardware with embedded software products, professional services, and PCS, which are considered separate units of accounting. Pursuant to the guidance in ASU 2009-13, when a sales arrangement contains multiple elements, such as products, essential software, PCS and/or professional services, the Company will allocate revenues to each element based on the aforementioned selling price hierarchy.
	In multiple-element arrangements that include software that is not essential to the functionality of the products, revenue is initially allocated to each separate unit of accounting using the relative selling prices of each of the deliverables in the arrangement based on the aforementioned selling price hierarchy. Since non-essential software deliverables are in the scope of ASC 985-605, VSOE must exist to account for the non-essential software deliverables as separate units of accounting from one another and further allocate the originally allocated non-essential software fee among the individual non-essential software deliverables. Since the Company was only able to establish VSOE for PCS, the amount allocated to the other non-essential software deliverables would be based on the residual method of allocation using VSOE for PCS. This allocated revenue is recognized once all non-essential software deliverables other than PCS are delivered.
	In 2013, the Company began recognizing revenue on certain new professional service contracts that include milestones using a proportional performance method of revenue recognition. Revenues from these fixed price professional service contracts are recognized as services are performed based on the achievement of specified milestones within the contracts and when the customer acknowledges that such criteria have been satisfied. The Company invoices its customer on these projects as agreed-upon project milestones are achieved and accepted by the customer. The Company recognized approximately $6.5 million and $1.2 million, respectively, of services revenues under this method during 2014 and 2013.
Net Earnings Per Share:	Net Earnings Per Share:
	The Company computes basic net earnings per share using the weighted average number of shares outstanding. Diluted net earnings per share include the effect of common stock equivalents, if any, for each period. Diluted per share amounts assume the conversion, exercise or issuance of all potential common stock instruments unless their effect is anti-dilutive. The following table computes basic and diluted net earnings per share:
			Year Ended December 31,
			2014			2013			2012
			(in thousands,
			except per share data)
	Net earnings		$	11,081		$	10,045		$	10,535
	Basic:
	Weighted average common shares outstanding			21,598			19,078			17,114
	Net earnings per share—basic		$	0.51		$	0.53		$	0.62
	Diluted:
	Shares used in the computation of basic net earnings per share			21,598			19,078			17,114
	Employee and non-employee director stock options			170			163			164
	Restricted stock that has not vested			271			252			317
	Shares used in the computation of diluted net earnings per share			22,039			19,493			17,595
	Net earnings per share—diluted		$	0.50		$	0.52		$	0.60
	The Company excluded the following restricted stock grants that have not vested from weighted average common shares outstanding used in the computation of basic net earnings per share:
			Year Ended December 31,
			2014			2013			2012
	Restricted stock that has not vested			1,278,680			3,707,641			1,612,362
	The Company excluded the following restricted stock grants that have not vested from the computation of diluted earnings per share as their effect would have been anti-dilutive:
			Year Ended December 31,
			2014			2013			2012
	Non-vested common stock			37,163			61,000			9,000
Fair Value of Financial Instruments:	Fair Value of Financial Instruments:
	Fair value is the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In determining fair value for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and the assumptions that market participants would use when pricing the asset or liability. The Company applies fair value measurements for both financial and nonfinancial assets and liabilities. The Company has no nonfinancial assets or liabilities that require measurement at fair value on a recurring basis as of December 31, 2014.
	The fair value of the Company's financial instruments, including cash and cash equivalents, short term investments, accounts receivable, leases receivable, accounts payable, leases payable, line of credit and accrued expenses, approximate cost because of their short maturities.
	The Company uses the three-level fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair values. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below:
	•	Level 1—Unadjusted quoted prices available in active markets for the identical assets or liabilities at the measurement date.
	•	Level 2—Significant other observable inputs available at the measurement date, other than quoted prices included in Level 1, either directly or indirectly.
	•	Level 3—Significant unobservable inputs that the Company cannot corroborate by observable market data and thus reflect the use of significant management judgment. The Company generally determines these values using pricing models based on assumptions its management believes other market participants would make.
	The fair value hierarchy requires the use of observable market data when available. In instances in which the inputs used to measure fair value fall into different levels of the fair value hierarchy, the Company determines the fair value measurement based on the lowest level input that is significant to the fair value measurement in its entirety. The Company's assessment of the significance of a particular item to the fair value measurement in its entirety requires judgment, including the consideration of inputs specific to the asset or liability. The following table sets forth, by level within the fair value hierarchy, the accounting of the Company's financial assets and/or liabilities at fair value on a recurring basis according to the valuation techniques the Company used to determine their fair value(s):
	(In thousands)		Total at Fair			Quoted Prices in			Significant Other		Significant
			Value			Active Markets			Observable		Unobservable
						for Identical			Inputs (Level 2)		Inputs
						Assets (Level 1)					(Level 3)
	At December 31, 2014:
	Cash and cash equivalents		$	27,725		$	27,725		$	—	$	—
	Short term investments			22,994			3,000			19,994		—
	Total assets measured at fair value		$	50,719		$	30,725		$	19,994	$	—
	At December 31, 2013:
	Cash and cash equivalents		$	24,871		$	24,871		$	—	$	—
	Short term investments			51,214			15,239			35,975		—
	Total assets measured at fair value		$	76,085		$	40,110		$	35,975	$	—
Advertising Costs:	Advertising Costs:
	Advertising and promotion costs are charged to operations as incurred. Advertising and promotion costs included in sales and marketing expense for 2014, 2013, and 2012 were $616,000, $683,000, and $559,000, respectively.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies: (Tables)	12 Months Ended
	Dec. 31, 2014
Summary of Significant Accounting Policies:
Schedule of property and equipment
		December 31,
		2014			2013
		(in thousands)
	Property and equipment:
	Construction in process	$	445		$	725
	Leasehold improvements		2,479			2,443
	Furniture and fixtures		2,725			2,482
	Equipment		9,041			7,260
	Computers and software		6,601			5,433
			21,291			18,343
	Less accumulated depreciation and amortization		(14,047	)		(11,621	)
		$	7,244		$	6,722
Schedule of computation of basic and diluted net earnings per share
		Year Ended December 31,
		2014			2013			2012
		(in thousands,
		except per share data)
	Net earnings	$	11,081		$	10,045		$	10,535
	Basic:
	Weighted average common shares outstanding		21,598			19,078			17,114
	Net earnings per share—basic	$	0.51		$	0.53		$	0.62
	Diluted:
	Shares used in the computation of basic net earnings per share		21,598			19,078			17,114
	Employee and non-employee director stock options		170			163			164
	Restricted stock that has not vested		271			252			317
	Shares used in the computation of diluted net earnings per share		22,039			19,493			17,595
	Net earnings per share—diluted	$	0.50		$	0.52		$	0.60
Schedule of restricted stock grants excluded from the computation of basic earnings per share
		Year Ended December 31,
		2014			2013			2012
	Restricted stock that has not vested		1,278,680			3,707,641			1,612,362
Schedule of restricted stock grants that have not vested and options to purchase shares of common stock excluded from computation of diluted earnings per share
		Year Ended December 31,
		2014			2013			2012
	Non-vested common stock		37,163			61,000			9,000
Schedule of financial assets and/or liabilities at fair value on a recurring basis
	(In thousands)	Total at Fair			Quoted Prices in			Significant Other		Significant
		Value			Active Markets			Observable		Unobservable
					for Identical			Inputs (Level 2)		Inputs
					Assets (Level 1)					(Level 3)
	At December 31, 2014:
	Cash and cash equivalents	$	27,725		$	27,725		$	—	$	—
	Short term investments		22,994			3,000			19,994		—
	Total assets measured at fair value	$	50,719		$	30,725		$	19,994	$	—
	At December 31, 2013:
	Cash and cash equivalents	$	24,871		$	24,871		$	—	$	—
	Short term investments		51,214			15,239			35,975		—
	Total assets measured at fair value	$	76,085		$	40,110		$	35,975	$	—

Acquisitions_Tables

Acquisitions: (Tables)	12 Months Ended
	Dec. 31, 2014
Bear Data
Acquisitions
Summary of allocation of the purchase price to the fair value of the assets and liabilities acquired including, for the StraTech acquisition only, measurement period
		(in thousands)
	Assets acquired at their fair value:
	Accounts receivable, net	$	15,650
	Inventories shipped but not installed		775
	Short term deferred tax assets		935
	Equipment		975
	Finite-lived intangibles		9,522
	Goodwill		10,236
	Other assets		257
	Total assets acquired		38,350
	Liabilities assumed at their fair value:
	Accounts payable		17,188
	Leases payable		229
	Accrued expenses		3,536
	Long-term deferred tax liabilities		3,957
	Total liabilities assumed		24,910
	Preliminary net purchase price	$	13,440
Schedule of reconciliation of the net purchase price as compared to the cash payment for purchase
		(in thousands)
	Payment in cash for purchase	$	16,173
	Less cash acquired		(3,466	)
	Less receivable due from seller		(741	)
	Plus value of shares issued		1,474
	Preliminary net purchase price	$	13,440
Schedule of pro forma consolidated unaudited results of operations
		Year Ended December 31,
		2014			2013
		(in thousands, except per
		share data)
	Net sales	$	796,392		$	719,154
	Net earnings	$	11,779		$	8,733
	Per share data:
	Basic earnings	$	0.55		$	0.46
	Diluted earnings	$	0.53		$	0.45
StraTech
Acquisitions
Summary of allocation of the purchase price to the fair value of the assets and liabilities acquired including, for the StraTech acquisition only, measurement period
		(in thousands)
	Assets acquired at their fair value:
	Accounts receivable, net	$	9,539
	Deferred revenue costs		8,521
	Equipment		432
	Finite-lived intangibles		15,920
	Goodwill		5,334
	Other assets		628
	Total assets acquired		40,374
	Liabilities assumed at their fair value:
	Accounts payable		17,599
	Deferred revenue		10,289
	Accrued expenses		567
	Other liabilities		29
	Total liabilities assumed		28,484
	Net purchase price	$	11,890
Schedule of reconciliation of the net purchase price as compared to the cash payment for purchase
		(in thousands)
	Payment in cash for purchase	$	13,172
	Less receivable due from seller		(3,307	)
	Plus value of shares issued		2,025
	Net purchase price	$	11,890

Short_Term_Investments_Tables

Short Term Investments: (Tables)	12 Months Ended
	Dec. 31, 2014
Short Term Investments:
Summary of short term investments
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	December 31, 2014
	Commercial paper	$	19,988	$	6	$	—	$	19,994
	Interest-bearing CDs		3,005		—		5		3,000
	Total	$	22,993	$	6	$	5	$	22,994
	December 31, 2013
	Commercial paper	$	35,979	$	5	$	9	$	35,975
	Corporate bonds		15,422		—		183		15,239
	Total	$	51,401	$	5	$	192	$	51,214

Intangibles_Tables

Intangibles: (Tables)	12 Months Ended
	Dec. 31, 2014
Intangibles:
Summary of goodwill activity
		(in thousands)
	January 1, 2013	$	37,780
	Additions		10,236
	December 31, 2014	$	48,016
Schedule of change in the net carrying amount of intangibles
		Year Ended
		December 31,
		2014			2013
		(in thousands)
	Beginning Balance	$	13,509		$	20,760
	Recognized in connection with acquisitions		9,522			—
	Amortization		(6,428	)		(7,251	)
	Ending Balance	$	16,603		$	13,509
Summary of identified finite-lived intangible asset balances
				As of December 31, 2014								As of December 31, 2013
		Amortizable		Gross			Accumulated			Net		Gross		Accumulated			Net
		Period		Assets			Amortization			Assets		Assets		Amortization			Assets
		(years)
	Customer relationships	8-May		$	36,943			(21,776	)	$	15,167	$	29,133		(15,743	)	$	13,390
	Services agreement	4			67			(67	)		—		67		(67	)		—
	Certification	2			467			(467	)		—		467		(467	)		—
	Covenant not to compete	3			848			(504	)		344		478		(359	)		119
	Trademarks	3			1,153			(325	)		828		263		(263	)		—
	Order backlog	3 months-			2,614			(2,350	)		264		2,162		(2,162	)		—
		1 year
	Total identified intangible assets			$	42,092			(25,489	)	$	16,603	$	32,570		(19,061	)	$	13,509
Schedule of future amortization expense for the next five years
		(in thousands)
	2015	$	7,347
	2016		5,157
	2017		2,649
	2018		900
	2019		550
		$	16,603

Income_Taxes_Tables

Income Taxes: (Tables)	12 Months Ended
	Dec. 31, 2014
Income Taxes:
Schedule of reconciliation of the U.S. federal statutory tax rate to the entity's effective income tax rate
		2014			2013			2012
	Tax expense at U.S. statutory rates		35	%		35	%		35	%
	State tax expense, net of federal tax effect		3.4			3.3			5
	Meals and entertainment		1.9			1.7			1
	Gain on settlement related to StraTech acquisition		(3.8	)		—			—
	Non-deductible expenses and other		(0.3	)		(0.2	)		(0.4	)
	Effective tax rate		36.2	%		39.8	%		40.6	%
Schedule of net deferred tax assets (liabilities)
		Year Ended
		December 31,
		2014			2013
		(in thousands)
	Deferred income tax assets:
	Compensation accrual	$	3,823		$	4,281
	Deferred revenue		19,478			16,608
	Net operating loss and credits carryovers		698			50
	Intangibles		—			2,280
	Other		534			573
	Total deferred tax assets		24,533			23,792
	Deferred income tax liabilities:
	Deferred costs		(19,031	)		(16,845	)
	Intangibles		(59	)		—
	Property and equipment		(1,013	)		(861	)
	Other		(752	)		(664	)
	Total deferred tax liabilities		(20,855	)		(18,370	)
	Net deferred income tax assets	$	3,678		$	5,422
Schedule of deferred tax amounts classified in the accompanying balance sheets
		Year Ended
		December 31,
		2014			2013
		(in thousands)
	Current deferred tax liability	$	(1,982	)	$	(1,694	)
	Noncurrent deferred tax asset		5,660			7,116
	Net deferred tax asset	$	3,678		$	5,422
Schedule of tax expense
		Year Ended December 31,
		2014			2013			2012
		(in thousands)
	Current income tax expense:
	United States federal	$	6,591		$	14,142		$	5,773
	State and local		984			2,485			1,151
	Current income tax expense	$	7,575		$	16,627		$	6,924
	Deferred income tax benefit:
	United States federal	$	(1,200	)	$	(8,886	)	$	162
	State and local		(78	)		(1,099	)		100
	Deferred income tax benefit		(1,278	)		(9,985	)		262
	Income tax expense	$	6,297		$	6,642		$	7,186
Schedule of reconciliation of gross unrecognized tax benefits
		Year Ended
		December 31,
		2014			2013			2012
		(in thousands)
	Gross unrecognized tax benefits at January 1	$	—		$	—		$	—
	Increases related to:
	Prior year income tax positions		236			—			—
	Current year income tax positions		—			—			—
	Gross unrecognized tax benefits at December 31	$	236		$	—		$	—

Operating_Lease_Commitments_Ta

Operating Lease Commitments: (Tables)	12 Months Ended
	Dec. 31, 2014
Operating Lease Commitments:
Schedule of future minimum lease payments due under non-cancelable operating leases
		Net Lease
		Obligations
		(in thousands)
	2015	$	2,191
	2016		1,507
	2017		1,310
	2018		940
	Thereafter		678
		$	6,626
Schedule of total rent expense, net of sublease income
		Year Ended December 31,
		2014		2013		2012
		(in thousands)
	Rent expense	$	3,040	$	3,062	$	2,578

Stockholders_Equity_Tables

Stockholders' Equity: (Tables)	12 Months Ended
	Dec. 31, 2014
Stockholders' Equity:
Summary of the entity's restricted stock activity
		Number of Shares			Weighted Average
					Grant-Date Fair Value
	Restricted stock at January 1, 2012		1,079,058		$	5.6
	Granted		663,843		$	8.58
	Shares vested		(385,808	)	$	5.66
	Shares cancelled		(109,425	)	$	7.12
	Restricted stock at December 31, 2012		1,247,668		$	7.47
	Granted		480,908		$	11.21
	Shares vested		(316,000	)	$	5.84
	Shares cancelled		(231,061	)	$	8.83
	Restricted stock at December 31, 2013		1,181,515		$	9.17
	Granted		474,900		$	11.37
	Shares vested		(438,710	)	$	7.53
	Shares cancelled		(213,864	)	$	10.96
	Restricted stock at December 31, 2014		1,003,841		$	10.55
Summary of activity under the entity's stock option plans
		Outstanding Options
		Number of Shares			Range of		Weighted
					Exercise Prices		Average
							Exercise Price
	Balance, December 31, 2011		667,382		$1.44 - $5.21		$	3.52
	Options granted		—		—		$	—
	Options exercised		(95,092	)	$1.44 - $4.36		$	3.66
	Options cancelled		(4,250	)	$3.71 - $4.36		$	4.06
	Balance, December 31, 2012		568,040		$1.80 - $5.21		$	3.49
	Options granted		—		—		$	—
	Options exercised		(77,738	)	$1.80 - $5.00		$	3.23
	Options cancelled		(4,518	)	$3.32 - $3.85		$	3.43
	Balance, December 31, 2013		485,784		$3.32 - $5.21		$	3.54
	Options granted		—		—		$	—
	Options exercised		(22,884	)	$3.32 - $4.30		$	3.88
	Options cancelled		—		—		$	—
	Balance, December 31, 2014		462,900		$3.50 - $5.21		$	3.52
	Options exercisable as of December 31, 2014		462,900		$3.50 - $5.21		$	3.52

SalesType_Leases_Receivables_a1

Sales-Type Leases Receivables and Sales-Leaseback Arrangements: (Tables)	12 Months Ended
	Dec. 31, 2014
Sales-Type Lease Receivables and Sales-Leaseback Arrangements
Schedule of maturities of minimum lease payments receivable
		(in thousands)
	2015	$	2,482
	2016		1,889
	2017		1,321
	2018		498
	Thereafter		308
			6,498
	Less: Current portion		(2,482	)
	Long-term sales-type lease receivable	$	4,016
Schedule of the contractual amounts due under sales-type leases
		(in thousands)
	2015	$	2,319
	2016		1,793
	2017		929
	2018		493
	Thereafter		63
			5,597
	Less: Current portion		(2,319	)
	Long-term leases payable	$	3,278

Quarterly_Financial_Informatio1

Quarterly Financial Information (unaudited): (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information (unaudited):
Schedule of Quarterly Financial Information
		March 31			June 30		30-Sep		31-Dec
		(in thousands, except per share data)
	2014
	Net sales	$	139,535		$	159,380	$	144,947	$	186,374
	Gross profit		29,482			35,483		32,333		39,529
	Operating earnings (loss)		(413	)		5,974		4,564		6,372
	Net earnings		301			3,563		3,546		3,671
	Net earnings per share—basic		0.01			0.17		0.16		0.17
	Net earnings per share—diluted		0.01			0.16		0.16		0.17
		March 31			June 30		30-Sep		31-Dec
		(in thousands, except per share data)
	2013
	Net sales	$	133,518		$	147,779	$	139,519	$	173,368
	Gross profit		29,833			33,561		29,805		40,659
	Operating earnings		1,966			4,936		1,155		9,348
	Net earnings		1,098			2,904		818		5,225
	Net earnings per share—basic		0.07			0.17		0.05		0.24
	Net earnings per share—diluted		0.07			0.16		0.05		0.24
		March 31			June 30		30-Sep		31-Dec
		(in thousands, except per share data)
	2012
	Net sales	$	119,088		$	120,042	$	104,774	$	147,298
	Gross profit		27,326			28,033		24,012		32,655
	Operating earnings		3,612			5,411		3,255		5,440
	Net earnings		2,161			3,219		1,923		3,232
	Net earnings per share—basic		0.13			0.19		0.11		0.19
	Net earnings per share—diluted		0.12			0.18		0.11		0.18

Summary_of_Significant_Account3

Summary of Significant Accounting Policies: (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
	item
Summary of Significant Accounting Policies:
Number of practices for providing solutions and services	4
Principles of Consolidation:
Ownership interest in Subsidiary	50.00%
Cash and Cash Equivalents:
Cash and Cash Equivalents in foreign banks	$64,000	$0
Accounts Receivable, net:
Accounts receivable, net of reserve for doubtful accounts	$460,000	$331,000

Summary_of_Significant_Account4

Summary of Significant Accounting Policies: (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	item	item	item
Inventories:
Reserves for obsolete and slow moving inventories	87,000	89,000
Net sales | Top five customers
Customers representing greater than 10% of accounts receivable balances
Number of top customers	5	5	5
Net sales by top five customers (as a percent)	7.00%	10.00%	11.00%

Summary_of_Significant_Account5

Summary of Significant Accounting Policies: (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	item
Property and Equipment:
Property and equipment, gross	$21,291,000	$18,343,000
Less accumulated depreciation and amortization	-14,047,000	-11,621,000
Property and equipment, net	7,244,000	6,722,000
Goodwill:
Number of operating units	1
Number of reporting units	1
Stock Compensation Plans:
Stock-based compensation expense	4,000,000	4,000,000	2,600,000
Uncertain Tax Positions:
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	236,000	0
Accrued interest and penalties	0	0
Construction in process
Property and Equipment:
Property and equipment, gross	445,000	725,000
Leasehold improvements
Property and Equipment:
Property and equipment, gross	2,479,000	2,443,000
Furniture and fixtures
Property and Equipment:
Property and equipment, gross	2,725,000	2,482,000
Equipment
Property and Equipment:
Property and equipment, gross	9,041,000	7,260,000
Computers and software
Property and Equipment:
Property and equipment, gross	$6,601,000	$5,433,000
Minimum
Property and Equipment:
Estimated useful lives	2 years
Maximum
Property and Equipment:
Estimated useful lives	10 years

Summary_of_Significant_Account6

Summary of Significant Accounting Policies: (Details 4) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Revenue Recognition
Services revenues under proportional performance method	$6.50	$1.20
Total net revenue
Support contract payment terms	30 days
Minimum
Total net revenue
Revenue recognition period under extended service contracts	1 year
Maximum
Total net revenue
Revenue recognition period under extended service contracts	3 years

Summary_of_Significant_Account7

Summary of Significant Accounting Policies: (Details 5) (USD $)	3 Months Ended												12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Summary of Significant Accounting Policies:
Net earnings	$3,671	$3,546	$3,563	$301	$5,225	$818	$2,904	$1,098	$3,232	$1,923	$3,219	$2,161	$11,081	$10,045	$10,535
Basic:
Shares used in the computation of basic net earnings per share													21,598,000	19,078,000	17,114,000
Net earnings per share - basic (in dollars per share)	$0.17	$0.16	$0.17	$0.01	$0.24	$0.05	$0.17	$0.07	$0.19	$0.11	$0.19	$0.13	$0.51	$0.53	$0.62
Diluted:
Shares used in the computation of basic net earnings per share													21,598,000	19,078,000	17,114,000
Employee and non-employee director stock options (in shares)													170,000	163,000	164,000
Restricted stock that has not vested (in shares)													271,000	252,000	317,000
Shares used in the computation of diluted net earnings per share													22,039,000	19,493,000	17,595,000
Net earnings per share - diluted (in dollars per share)	$0.17	$0.16	$0.16	$0.01	$0.24	$0.05	$0.16	$0.07	$0.18	$0.11	$0.18	$0.12	$0.50	$0.52	$0.60
Restricted Stock
Anti-dilutive shares
Shares excluded from computation of basic earnings per share													1,278,680	3,707,641	1,612,362
Shares of common stock excluded from the computation of diluted earnings per share													37,163	61,000	9,000

Summary_of_Significant_Account8

Summary of Significant Accounting Policies: (Details 6) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Advertising Costs:
Advertising and promotion costs	$616,000	$683,000	$559,000
Fair value on a recurring basis
Fair Value Measurements
Non-financial assets	0
Non-financial liabilities	0
Fair value on a recurring basis | Fair value
Fair Value Measurements
Total assets measured at fair value	50,719,000	76,085,000
Fair value on a recurring basis | Fair value | Cash and cash equivalents
Fair Value Measurements
Total assets measured at fair value	27,725,000	24,871,000
Fair value on a recurring basis | Fair value | Short-term investments
Fair Value Measurements
Total assets measured at fair value	22,994,000	51,214,000
Fair value on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value Measurements
Total assets measured at fair value	30,725,000	40,110,000
Fair value on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents
Fair Value Measurements
Total assets measured at fair value	27,725,000	24,871,000
Fair value on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Short-term investments
Fair Value Measurements
Total assets measured at fair value	3,000,000	15,239,000
Fair value on a recurring basis | Significant Other Observable Inputs (Level 2)
Fair Value Measurements
Total assets measured at fair value	19,994,000	35,975,000
Fair value on a recurring basis | Significant Other Observable Inputs (Level 2) | Short-term investments
Fair Value Measurements
Total assets measured at fair value	$19,994,000	$35,975,000

Acquisitions_Details

Acquisitions: (Details) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 18, 2014	Dec. 31, 2014
Acquisitions
Total integration and transaction costs	$626,000	$95,000	$359,000
Cash payment, net of cash acquired	12,707,000		13,172,000
Net working capital receivable from acquisition	741,000				741,000
Shares issued	22,876,753	22,785,422			22,876,753
Assets acquired at their fair value:
Goodwill	48,016,000	37,780,000			48,016,000
Liabilities assumed at their fair value:
Fair value of finite lived intangible assets	9,522,000
Common Stock Purchase Agreement
Acquisitions
Shares issued				156,360
Value of shares issued				1,700,000
Illiquidity adjustments				192,000
Purchase price, value of shares of common stock issued				1,500,000
Acquisitions, separately recognized transaction
Purchase price, value of shares of common stock issued				1,500,000
Number of executive securityholders				3
Consecutive trading days used in calculating weighted average price per share				20 days
Number of trading days prior to closing				1 day
Percent of shares transferable after the first anniversary of closing				75.00%
Reconciliation of the net purchase price as compared to the cash payment for purchase
Plus value of shares issued				1,500,000
Bear Data
Acquisitions
Total integration and transaction costs	626,000,000				626,000
Purchase price				13,400,000
Purchase price, cash payment				16,173,000
Net working capital receivable from acquisition				741,000
Purchase price, value of shares of common stock issued				1,474,000,000
Portion of consideration transferred and deposited in an escrow account to fund post-closing adjustments to the purchase price and other indemnification obligations				2,400,000
Measurement period				1 year
Acquisitions, separately recognized transaction
Purchase price, value of shares of common stock issued				1,474,000,000
Assets acquired at their fair value:
Accounts receivable, net				15,650,000
Inventories shipped but not installed				775,000
Short-term deferred tax assets				935,000
Equipment				975,000
Finite-lived intangibles				9,522,000
Goodwill				10,236,000
Other assets				257,000
Total assets acquired				38,350,000
Liabilities assumed at their fair value:
Accounts payable				17,188,000
Leases payable				-229,000
Accrued expenses				3,536,000
Long-term deferred tax liabilities				3,957,000
Total liabilities assumed				24,910,000
Preliminary net purchase price				13,440,000
Number of midmarket and enterprise customers				1,000
Reconciliation of the net purchase price as compared to the cash payment for purchase
Payment in cash for purchase				16,173,000
Less cash acquired				-3,466,000
Less receivable due from seller				-741,000
Plus value of shares issued				1,474,000,000
Preliminary net purchase price				13,440,000
Pro forma consolidated unaudited results of operations
Net sales	796,392,000	719,154,000
Net earnings	11,779,000	8,733,000
Per share data:
Basic earnings (in dollars per share)	$0.55	$0.46
Diluted earnings (in dollars per share)	$0.53	$0.45
Bear Data | Covenant not to compete
Liabilities assumed at their fair value:
Fair value of finite lived intangible assets				370,000
Finite lived intangible assets, estimated lives				3 years
Bear Data | Trademarks
Liabilities assumed at their fair value:
Fair value of finite lived intangible assets				890,000
Finite lived intangible assets, estimated lives				3 years
Bear Data | Customer relationships
Liabilities assumed at their fair value:
Fair value of finite lived intangible assets				7,810,000
Finite lived intangible assets, estimated lives				6 years
Bear Data | Order backlog
Liabilities assumed at their fair value:
Fair value of finite lived intangible assets				$452,200
Finite lived intangible assets, estimated lives				3 months

Acquisitions_Details_2

Acquisitions: (Details 2) (USD $)	12 Months Ended			0 Months Ended	1 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 04, 2012	Jan. 31, 2014	Mar. 31, 2014	Oct. 18, 2014	Dec. 31, 2014
Assets acquired at their fair value:
Goodwill	$48,016,000	$37,780,000						$48,016,000
Reconciliation of the net purchase price as compared to the cash payment for purchase
Total integration and transaction costs	626,000	95,000	359,000
Receivable reclassified from accounts receivable to equity		2,647,000
Charge for write-down of account receivable due from the Sellers	877,000	-611,000
StraTech
Acquisitions
Purchase price				11,900,000
Purchase price, cash payment				13,172,000
Purchase price, shares of common stock issued				269,783
Purchase price, value of shares of common stock issued				2,025,000
Shares of common stock deposited in escrow account				242,805
Initial amount of receivable due from Sellers				4,200,000
Decrease in receivable due from Sellers	936,000			-3,307,000				936,000
Increase in purchase price	936,000
Assets acquired at their fair value:
Accounts receivable, net				9,539,000
Deferred revenue costs				8,521,000
Equipment				432,000
Finite-lived intangibles				15,920,000
Goodwill				5,334,000
Other assets				628,000
Total assets acquired				40,374,000
Liabilities assumed at their fair value:
Accounts payable				17,599,000
Deferred revenue				10,289,000
Accrued expenses				567,000
Other liabilities				29,000
Total liabilities assumed				28,484,000
Preliminary net purchase price				11,890,000
Goodwill deductible for tax purposes	5,000,000							5,000,000
Period over which goodwill is deductible for tax purposes	15 years
Reconciliation of the net purchase price as compared to the cash payment for purchase
Payment in cash for purchase				13,172,000
Less receivable due from seller	936,000			-3,307,000				936,000
Plus value of shares issued				2,025,000
Preliminary net purchase price				11,890,000
Total integration and transaction costs	95,000	359,000
Shares of common stock deposited in escrow account released					242,805
Payment for shares of common stock released from escrow account					100,000
Uncollectible portion of receivable due from the Sellers		3,300,000
Receivable reclassified from accounts receivable to equity		2,647,000
Charge for write-down of account receivable due from the Sellers		611,000
Pre tax gain due to increase in stock price						877,000
StraTech | Customer relationships
Liabilities assumed at their fair value:
Finite lived intangible assets, estimated lives	5 years
StraTech | Maximum
Acquisitions
Measurement period	1 year
Bear Data
Acquisitions
Purchase price							13,400,000
Purchase price, cash payment							16,173,000
Purchase price, value of shares of common stock issued							1,474,000,000
Measurement period							1 year
Decrease in receivable due from Sellers							-741,000
Assets acquired at their fair value:
Accounts receivable, net							15,650,000
Equipment							975,000
Finite-lived intangibles							9,522,000
Goodwill							10,236,000
Other assets							257,000
Total assets acquired							38,350,000
Liabilities assumed at their fair value:
Accounts payable							17,188,000
Accrued expenses							3,536,000
Total liabilities assumed							24,910,000
Preliminary net purchase price							13,440,000
Reconciliation of the net purchase price as compared to the cash payment for purchase
Payment in cash for purchase							16,173,000
Less receivable due from seller							-741,000
Plus value of shares issued							1,474,000,000
Preliminary net purchase price							13,440,000
Total integration and transaction costs	$626,000,000							$626,000
Bear Data | Customer relationships
Liabilities assumed at their fair value:
Finite lived intangible assets, estimated lives							6 years

Acquisitions_Details_3

Acquisitions: (Details 3) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 18, 2014	Dec. 31, 2014
Assets acquired at their fair value:
Goodwill	$48,016,000	$37,780,000			$48,016,000
Reconciliation of the net purchase price as compared to the cash payment for purchase
Total integration and transaction costs	626,000	95,000	359,000
Bear Data
Acquisitions
Purchase price				13,400,000
Purchase price, cash payment				16,173,000
Purchase price, value of shares of common stock issued				1,474,000,000
Assets acquired at their fair value:
Accounts receivable, net				15,650,000
Equipment				975,000
Finite-lived intangibles				9,522,000
Goodwill				10,236,000
Other assets				257,000
Total assets acquired				38,350,000
Liabilities assumed at their fair value:
Accounts payable				17,188,000
Accrued expenses				3,536,000
Total liabilities assumed				24,910,000
Preliminary net purchase price				13,440,000
Reconciliation of the net purchase price as compared to the cash payment for purchase
Payment in cash for purchase				16,173,000
Less receivable due from seller				-741,000
Purchase price, value of shares of common stock issued				1,474,000,000
Preliminary net purchase price				13,440,000
Total integration and transaction costs	$626,000,000				$626,000
Bear Data | Covenant not to compete
Acquisitions
Finite lived intangible assets, estimated lives				3 years
Bear Data | Order backlog
Acquisitions
Finite lived intangible assets, estimated lives				3 months
Bear Data | Customer relationships
Acquisitions
Finite lived intangible assets, estimated lives				6 years
Bear Data | Trademarks
Acquisitions
Finite lived intangible assets, estimated lives				3 years

ShortTerm_Investments_Details

Short-Term Investments: (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Short-term investments.
Amortized Cost	$22,993	$51,401
Gross Unrealized Gains	6	5
Gross Unrealized Losses	5	192
Fair Value	22,994	51,214
Short-term investments	22,994	51,214
Maturity period	1 year	1 year
Interest rate on investment (as a percent)	50.00%
Minimum
Short-term investments.
Interest rate on investment (as a percent)		80.00%
Maximum
Short-term investments.
Interest rate on investment (as a percent)		550.00%
Commercial paper
Short-term investments.
Amortized Cost	19,988	35,979
Gross Unrealized Gains	6	5
Gross Unrealized Losses		9
Fair Value	19,994	35,975
Corporate bonds
Short-term investments.
Amortized Cost		15,422
Gross Unrealized Losses		183
Fair Value		15,239
Certificates of Deposit
Short-term investments.
Amortized Cost	3,005
Gross Unrealized Losses	5
Fair Value	$3,000

Intangibles_Details

Intangibles: (Details) (USD $)	12 Months Ended			24 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Oct. 18, 2014	Oct. 04, 2012
Identified intangible assets
Gross Assets	$42,092,000	$32,570,000		$42,092,000
Accumulated Amortization	-25,489,000	-19,061,000		-25,489,000
Net Assets	16,603,000	13,509,000	20,760,000	16,603,000
Amortization of intangibles	6,428,000	7,251,000	4,195,000
Goodwill activity
Balance at the beginning of the period	37,780,000
Additions				10,236,000
Balance at the end of the period	48,016,000	37,780,000		48,016,000
Change in the net carrying amount of intangibles
Beginning Balance	13,509,000	20,760,000		20,760,000
Recognized in connection with acquisitions	9,522,000
Amortization	-6,428,000	-7,251,000	-4,195,000
Ending Balance	16,603,000	13,509,000	20,760,000	16,603,000
Future amortization expenses for the next five years
2015	7,347,000			7,347,000
2016	5,157,000			5,157,000
2017	2,649,000			2,649,000
2018	900,000			900,000
2019	550,000			550,000
Net Assets	16,603,000	13,509,000	20,760,000	16,603,000
StraTech
Goodwill activity
Balance at the beginning of the period						5,334,000
Balance at the end of the period						5,334,000
Bear Data
Goodwill activity
Balance at the beginning of the period					10,236,000
Balance at the end of the period					10,236,000
Customer relationships
Identified intangible assets
Gross Assets	36,943,000	29,133,000		36,943,000
Accumulated Amortization	-21,776,000	-15,743,000		-21,776,000
Net Assets	15,167,000	13,390,000		15,167,000
Change in the net carrying amount of intangibles
Ending Balance	15,167,000	13,390,000		15,167,000
Future amortization expenses for the next five years
Net Assets	15,167,000	13,390,000		15,167,000
Customer relationships | StraTech
Identified intangible assets
Amortizable Period	5 years
Customer relationships | Bear Data
Identified intangible assets
Amortizable Period	6 years
Change in the net carrying amount of intangibles
Recognized in connection with acquisitions					7,810,000
Customer relationships | Minimum
Identified intangible assets
Amortizable Period	5 years
Customer relationships | Maximum
Identified intangible assets
Amortizable Period	8 years
Services agreement
Identified intangible assets
Amortizable Period	4 years
Gross Assets	67,000	67,000		67,000
Accumulated Amortization	-67,000	-67,000		-67,000
Certification
Identified intangible assets
Amortizable Period	2 years
Gross Assets	467,000	467,000		467,000
Accumulated Amortization	-467,000	-467,000		-467,000
Covenant not to compete
Identified intangible assets
Amortizable Period	3 years
Gross Assets	848,000	478,000		848,000
Accumulated Amortization	-504,000	-359,000		-504,000
Net Assets	344,000			344,000
Change in the net carrying amount of intangibles
Beginning Balance	119,000
Ending Balance	344,000			344,000
Future amortization expenses for the next five years
Net Assets	344,000			344,000
Covenant not to compete | Bear Data
Identified intangible assets
Amortizable Period	3 years
Change in the net carrying amount of intangibles
Recognized in connection with acquisitions					370,000
Trademarks
Identified intangible assets
Amortizable Period	3 years
Gross Assets	1,153,000	263,000		1,153,000
Accumulated Amortization	-325,000	-263,000		-325,000
Net Assets	828,000			828,000
Change in the net carrying amount of intangibles
Ending Balance	828,000			828,000
Future amortization expenses for the next five years
Net Assets	828,000			828,000
Trademarks | Bear Data
Identified intangible assets
Amortizable Period	3 years
Change in the net carrying amount of intangibles
Recognized in connection with acquisitions					890,000
Order backlog
Identified intangible assets
Gross Assets	2,614,000	2,162,000		2,614,000
Accumulated Amortization	-2,350,000	-2,162,000		-2,350,000
Net Assets	264,000			264,000
Change in the net carrying amount of intangibles
Ending Balance	264,000			264,000
Future amortization expenses for the next five years
Net Assets	264,000			264,000
Order backlog | Bear Data
Identified intangible assets
Amortizable Period	3 months
Change in the net carrying amount of intangibles
Recognized in connection with acquisitions					$452,200
Order backlog | Minimum
Identified intangible assets
Amortizable Period	3 months	1 month
Order backlog | Maximum
Identified intangible assets
Amortizable Period	1 year

Income_Taxes_Details

Income Taxes: (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of the U.S. federal statutory tax rate to the Company's effective income tax rate
Tax expense at U.S. statutory rates	35.00%	35.00%	35.00%
State tax expense, net of federal tax effect	3.40%	3.30%	5.00%
Meals and entertainment	1.90%	1.70%	1.00%
Gain on settlement related to Stra Tech acquisition	-3.80%
Non-deductible expenses and other	-0.30%	-0.20%	-0.40%
Effective tax rate	36.20%	39.80%	40.60%
Deferred income tax assets:
Compensation accrual	$3,823,000	$4,281,000
Deferred revenue	19,478,000	16,608,000
Net operating loss and credits carryovers	698,000	50,000
Intangibles		2,280,000
Other	534,000	573,000
Total deferred tax assets	24,533,000	23,792,000
Deferred income tax liabilities:
Deferred costs	-19,031,000	-16,845,000
Intangibles	59,000
Property and equipment	-1,013,000	-861,000
Other	-752,000	-664,000
Total deferred tax liabilities	-20,855,000	-18,370,000
Net deferred income tax assets	3,678,000	5,422,000
Deferred tax amounts classified in the accompanying balance sheets
Current deferred tax liability	1,982,000	1,694,000
Noncurrent deferred tax asset	5,660,000	7,116,000
Net deferred income tax assets	3,678,000	5,422,000
Tax expense
Amount of unrecognized tax benefits which would affect our effective tax rate if recognized	236,000	0
Accrued interest and penalties	0	0
Current income tax expense:
United States federal	6,591,000	14,142,000	5,773,000
State and local	984,000	2,485,000	1,151,000
Current income tax expense	7,575,000	16,627,000	6,924,000
Deferred income tax benefit:
United States federal	-1,200,000	-8,886,000	162,000
State and local	-78,000	-1,099,000	100,000
Deferred income tax benefit	-1,278,000	-9,985,000	262,000
Income tax expense	6,297,000	6,642,000	7,186,000
Reconciliation of gross unrecognized tax benefits
Increases related to prior year income tax positions	236,000
Balance at the end of the period	$236,000

Income_Taxes_Details_2

Income Taxes: (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating loss carryforwards
Amount recorded to equity for tax expenses associated with the exercise of stock options	$817,000	$885,000	$780,000
Minimum
Operating loss carryforwards
Expected annual effective tax rate (as a percent)	40.00%
Maximum
Operating loss carryforwards
Expected annual effective tax rate (as a percent)	42.00%
Federal
Operating loss carryforwards
Net operating loss carryforwards	1,100,000
Tax credit carryforwards	100,000
State
Operating loss carryforwards
Net operating loss carryforwards	2,400,000
Tax credit carryforwards	$100,000

Operating_Lease_Commitments_De

Operating Lease Commitments: (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2011	Oct. 31, 2014	Oct. 31, 2012	Aug. 09, 2010
	item	sqft	item	item	sqft
Lease Commitments
Number of other leased locations	35
Bear Data
Lease Commitments
Number of leases in which company is the successor in interest as a result of acquisition			7
Area of office space acquired from acquisitions (in square feet)	19,953
StraTech
Lease Commitments
Number of leases in which company is the successor in interest as a result of acquisition				6
Area of office space acquired from acquisitions (in square feet)	27,000
Midwave
Lease Commitments
Area of office space acquired from acquisitions (in square feet)					20,851
Expansion Space under amendment to the Original Lease (in square feet)		32,906
Area of office space available for operations (in square feet)		54,000
Extended term of the Original Lease		42 months
Expansion space lease term		7 years 6 months
Optional additional term of original lease	5 years

Operating_Lease_Commitments_De1

Operating Lease Commitments: (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net Lease Obligations
2015	$2,191,000
2016	1,507,000
2017	1,310,000
2018	940,000
Thereafter	678,000
Total net lease obligations	6,626,000
Rent expense, net of sublease income
Sublease income	38,500	34,000	219,000
Rent expense	$3,040,000	$3,062,000	$2,578,000

Employee_Benefit_Plan_Details

Employee Benefit Plan: (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Employee Benefit Plan:
Maximum percentage of contribution of pretax compensation by employees under 401(k) portion of the plan	60.00%
Potential employer contribution (as a percent)	50.00%
Maximum matching contribution as a percentage of employee's compensation	6.00%
Cost of contributions under 401(k) portion of the plan	$1.60	$1.40	$1.10

Line_of_Credit_Details

Line of Credit: (Details) (USD $)	0 Months Ended
	Jul. 17, 2013	Jul. 17, 2013	Jan. 13, 2015	Dec. 31, 2014	Dec. 31, 2013
Combined facility | Minimum
Line of Credit
Tangible net worth	$20,000,000	20,000,000
Quarterly net income	250,000
Combined facility | Maximum
Line of Credit
Funded debt to EBITDA ratio	3
Combined facility | CPC
Line of Credit
Maximum borrowing amount	40,000,000	40,000,000
Commitment fee (as a percent)	0.50%
Revolving facility | CPC
Line of Credit
Borrowing base as a percentage of certain eligible accounts	85.00%
Borrowing base as a percentage of channel financed inventory	100.00%
Revolving facility | Wells Fargo Bank, N.A.
Line of Credit
Margin added to the variable interest rate (as a percent)	2.00%
Variable interest rate (as a percent)		one-month LIBOR
Interest rate at the end of the period (as a percent)				0.17%
Channel finance facility
Line of Credit
Margin added to the variable interest rate (as a percent)	4.00%
Variable interest rate (as a percent)	LIBOR
Outstanding advances on the lines of credit				27,700,000	20,000,000
Amended Agreement | Subsequent Event
Line of Credit
Tangible net worth			30,000,000
Tangible net worth increase			10,000,000
Free cash flow			5,000,000
Number of trailing months for calculating free cash flow			12 months
Amended Agreement | CPC | Subsequent Event
Line of Credit
Increase to borrowing capacity			10,000,000
Maximum borrowing amount			$50,000,000

Stockholders_Equity_Details

Stockholders' Equity: (Details) (USD $)

0 Months Ended

12 Months Ended

0 Months Ended

Aug. 14, 2013

Aug. 08, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

10-May-12

Aug. 15, 2014

Aug. 12, 2014

Oct. 04, 2012

Jul. 17, 2011

Dec. 04, 2012

Feb. 22, 2012

Jan. 17, 2011

Aug. 17, 2010

Dec. 23, 2013

Mar. 11, 2013

31-May-11

Stock-Based Compensation

Stock-based compensation expense

$4,000,000

$4,000,000

$2,600,000

Common Stock Offering

Number of shares which can be issued under the underwriting agreement relating to the public offering

3,300,000

Share price (in dollars per share)

$11

Term for which an over-allotment option was granted to the underwriters

30 days

Number of additional shares for which an over-allotment option was granted to the underwriters

495,000

Shares price for which an over-allotment option was granted to the underwriters (in dollars per share)

$11

Number of shares issued under public offering

3,795,000

Issue price per share of common stock (in dollars per share)

$11

Proceeds from common stock sold, net of offering costs

39,000,000

39,021,000

2011 Plan

Stock-Based Compensation

Number of initial shares of common stock reserved for possible issuance

750,000

Number of shares available for future grants

628,440

2011 Plan | Minimum

Stock-Based Compensation

Increased number of shares issued pursuant to award

1,053,943

2011 Plan | Maximum

Stock-Based Compensation

Increased number of shares issued pursuant to award

1,553,943

2009 Plan

Stock-Based Compensation

Number of initial shares of common stock reserved for possible issuance

303,943

Restricted stock granted on August 15, 2014 | Executive management | 2011 Plan

Stock-Based Compensation

Number of Executive Manager

1

Fair value of the share based award at the grant date

175,050

Unrecognized compensation expense

74,000

Stock-based compensation expense

31,000

Number of Shares

Granted (in shares)

15,000

Performance-based restricted stock on August 15, 2014 | Executive management | 2011 Plan | Performance based vesting

Stock-Based Compensation

Vesting percentage based upon earnings goal

67.00%

Number of shares that can be vested based upon earning goal

10,000

Fair value of the share based award at the grant date

46,680

116,700

Target percentage of non-GAAP operating income achievable

150.00%

Target amount of non-GAAP operating income achievable

32,300,000

Target percentage of non-GAAP operating income achieved

90.00%

Shares for performance achieved or achievable

4,000

Performance-based restricted stock on August 15, 2014 | Executive management | 2011 Plan | Performance based vesting | Awards vesting over two years

Stock-Based Compensation

Vesting period

2 years

Vesting percentage on the second anniversary of the grant date

33.00%

Fair value of restricted stock

15,560

Performance-based restricted stock on August 15, 2014 | Executive management | 2011 Plan | Performance based vesting | Awards vesting over three years

Stock-Based Compensation

Vesting period

3 years

Fair value of restricted stock

15,560

Performance-based restricted stock on August 15, 2014 | Executive management | 2011 Plan | Performance based vesting | Awards vesting over 12 months

Stock-Based Compensation

Vesting percentage on the first anniversary of the grant date

33.00%

Performance-based restricted stock on August 15, 2014 | Executive management | 2011 Plan | Performance based vesting | Awards vesting over 14 months

Stock-Based Compensation

Vesting period

14 years

Fair value of restricted stock

15,560

Time-based restricted stock on August 15, 2014 | Managers | 2011 Plan | Time-based vesting

Stock-Based Compensation

Vesting percentage based on employee stay

50.00%

Time-based restricted stock on August 15, 2014 | Executive management | 2011 Plan | Time-based vesting

Stock-Based Compensation

Fair value of the share based award at the grant date

58,350

Shares to be vested on employee stay for the specified period

5,000

Fair value of restricted stock

58,350

Time-based restricted stock on August 15, 2014 | Executive management | 2011 Plan | Time-based vesting | Awards vesting over two years

Stock-Based Compensation

Vesting period

2 years

Vesting percentage on the second anniversary of the grant date

33.00%

Fair value of restricted stock

19,450

Time-based restricted stock on August 15, 2014 | Executive management | 2011 Plan | Time-based vesting | Awards vesting over three years

Stock-Based Compensation

Vesting period

3 years

Vesting percentage on the third anniversary of the grant date

33.00%

Fair value of restricted stock

19,450

Time-based restricted stock on August 15, 2014 | Executive management | 2011 Plan | Time-based vesting | Awards vesting over 12 months

Stock-Based Compensation

Vesting period

1 year

Vesting percentage on the first anniversary of the grant date

33.00%

Fair value of restricted stock

19,450

Restricted Stock Granted On August 12, 2014 | Managers | 2011 Plan

Stock-Based Compensation

Fair value of the share based award at the grant date

1,600,000

Unrecognized compensation expense

836,000

Stock-based compensation expense

175,000

Shares for performance achieved or achievable

17,500

Fair value of restricted stock

202,000

Number of Shares

Granted (in shares)

140,000

Restricted Stock Granted On August 12, 2014 | Managers | 2011 Plan | Awards vesting over 17 months

Stock-Based Compensation

Vesting period

17 months

Performance-based restricted stock on August 12, 2014 | Managers | 2011 Plan | Performance based vesting

Stock-Based Compensation

Vesting percentage based upon earnings goal

50.00%

Number of shares that can be vested based upon earning goal

70,000

Fair value of the share based award at the grant date

809,200

Time-based restricted stock on August 12, 2014 | Managers | 2011 Plan | Time-based vesting

Stock-Based Compensation

Fair value of the share based award at the grant date

809,200

Shares to be vested on employee stay for the specified period

70,000

Fair value of restricted stock

809,200

Time-based restricted stock on August 12, 2014 | Managers | 2011 Plan | Time-based vesting | Awards vesting over two years

Stock-Based Compensation

Vesting period

2 years

Vesting percentage on the second anniversary of the grant date

50.00%

Fair value of restricted stock

404,600

Time-based restricted stock on August 12, 2014 | Managers | 2011 Plan | Time-based vesting | Awards vesting over three years

Stock-Based Compensation

Vesting period

3 years

Vesting percentage on the third anniversary of the grant date

25.00%

Fair value of restricted stock

202,300

Time-based restricted stock on August 12, 2014 | Managers | 2011 Plan | Time-based vesting | Awards vesting over four years

Stock-Based Compensation

Vesting period

4 years

Vesting percentage on the fourth anniversary of the grant date

25.00%

Fair value of restricted stock

202,300

Restricted Stock

Number of Shares

Restricted stock that had not yet vested at the beginning of the period (in shares)

1,181,515

1,247,668

1,079,058

Granted (in shares)

474,900

480,908

663,843

Shares vested (in shares)

-438,710

-316,000

-385,808

Cancelled (in shares)

-213,864

-231,061

-109,425

Restricted stock that had not yet vested at the end of the period (in shares)

1,003,841

1,181,515

1,247,668

Weighted Average Grant-Date Fair Value

Non-vested restricted stock at the beginning of the period (in dollars per share)

$9.17

$7.47

$5.60

Granted (in dollars per share)

$11.37

$11.21

$8.58

Shares vested (in dollars per share)

$7.53

$5.84

$5.66

Cancelled (in dollars per share)

$10.96

$8.83

$7.12

Non-vested restricted stock at the end of the period (in dollars per share)

$10.55

$9.17

$7.47

Restricted Stock | 2011 Plan | Minimum

Stock-Based Compensation

Vesting period

3 years

Restricted Stock | 2011 Plan | Maximum

Stock-Based Compensation

Vesting period

4 years

Restricted Stock | 2011 Plan | Awards vesting over two years

Stock-Based Compensation

Vesting period

2 years

Fair value of restricted stock

99,000

Restricted Stock | Managers | 2011 Plan

Stock-Based Compensation

Vesting percentage based upon earnings goal

50.00%

Fair value of the share based award at the grant date

386,000

Unrecognized compensation expense

0

Stock-based compensation expense

55,000

297,000

309,000

Vesting percentage on the second anniversary of the grant date

25.00%

Vesting percentage on the third anniversary of the grant date

25.00%

Shares vesting upon achievement of an income or gross profit objective

39,000

Shares vesting at the second anniversary

88,000

Shares vesting at the third anniversary

88,000

Number of Shares

Granted (in shares)

45,000

215,000

Restricted Stock | Managers | 2011 Plan | Awards vesting over 6 months

Stock-Based Compensation

Vesting period

6 months

Fair value of restricted stock

292,000

Restricted Stock | Managers | 2011 Plan | Awards vesting over two years

Stock-Based Compensation

Vesting period

2 years

Unrecognized compensation expense

658,000

Restricted Stock | Managers | 2011 Plan | Awards vesting over three years

Stock-Based Compensation

Vesting period

3 years

3 years

Unrecognized compensation expense

658,000

Fair value of restricted stock

99,000

Restricted Stock | Managers | 2011 Plan | Awards vesting over 4.5 months

Stock-Based Compensation

Vesting period

4 months 15 days

Fair value of restricted stock

198,000

Restricted Stock | Executive management | 2011 Plan

Stock-Based Compensation

Vesting percentage based upon earnings goal

50.00%

50.00%

Fair value of the share based award at the grant date

1,400,000

1,500,000

1,200,000

Unrecognized compensation expense

0

Stock-based compensation expense

13,000

313,000

459,000

Vesting percentage on the second anniversary of the grant date

25.00%

25.00%

Vesting percentage on the third anniversary of the grant date

12.50%

25.00%

Vesting percentage on the fourth anniversary of the grant date

12.50%

Shares vesting upon achievement of an earnings objective

104,500

Shares vesting at the second anniversary

52,250

Shares vesting at the third anniversary

52,250

Number of Shares

Granted (in shares)

163,000

173,000

209,000

Restricted Stock | Executive management | 2011 Plan | Awards vesting over two years

Stock-Based Compensation

Vesting period

2 years

2 years

2 years

Fair value of restricted stock

340,000

375,000

306,000

Restricted Stock | Executive management | 2011 Plan | Awards vesting over three years

Stock-Based Compensation

Vesting period

3 years

3 years

3 years

Fair value of restricted stock

170,000

375,000

306,000

Restricted Stock | Executive management | 2011 Plan | Awards vesting over 12 months

Stock-Based Compensation

Vesting period

12 months

Fair value of restricted stock

612,000

Restricted Stock | Executive management | 2011 Plan | Awards vesting over 25 months

Stock-Based Compensation

Vesting period

25 months

Fair value of restricted stock

680,000

Restricted Stock | Executive management | 2011 Plan | Awards vesting over four years

Stock-Based Compensation

Vesting period

4 years

Fair value of restricted stock

170,000

Restricted Stock | Executive management | 2011 Plan | Awards vesting over 22.5 months

Stock-Based Compensation

Vesting period

22 months 15 days

Fair value of restricted stock

750,000

Restricted Stock | Executive management | 2011 Plan | Performance based vesting

Stock-Based Compensation

Vesting percentage on target of the non-GAAP operating income

33.00%

Restricted Stock | Managers and employees | 2011 Plan

Stock-Based Compensation

Number of shares issued

319,900

273,500

279,428

Unrecognized compensation expense

4,400,000

Stock-based compensation expense

1,900,000

1,900,000

910,000,000,000

Restricted Stock | Managers and employees | 2009 Plan

Stock-Based Compensation

Unrecognized compensation expense

0

Stock-based compensation expense

0

0

-56,000

Number of Shares

Granted (in shares)

25,000

Restricted Stock | Managers and employees | 2009 Plan | Awards vesting over eighteen months

Stock-Based Compensation

Vesting period

18 months

Fair value of restricted stock

85,000

Restricted Stock | Board of Directors

Stock-Based Compensation

Stock-based compensation expense

484,000

424,000

323,000

Awards of fully vested shares

6,000

Restricted stock issued to non-employee directors for providing service

6,000

Number of Shares

Granted (in shares)

40,804

36,000

36,000

Restricted stock that had not yet vested at the end of the period (in shares)

10,500

Restricted stock granted on December 4, 2012 | Executive management | 2011 Plan

Stock-Based Compensation

Unrecognized compensation expense

118,000

Stock-based compensation expense

514,000

519,000

51,000

Restricted stock granted on October 4, 2012 | Managers | 2011 Plan

Stock-Based Compensation

Unrecognized compensation expense

24,000

Stock-based compensation expense

68,000

80,000

20,000

Restricted stock granted on February 22, 2012 | Executive management | 2011 Plan

Stock-Based Compensation

Unrecognized compensation expense

13,000

Stock-based compensation expense

115,000

191,000

286,000

Restricted stock granted on December 23, 2013 | Executive management | 2011 Plan

Stock-Based Compensation

Fair value of the share based award at the grant date

1,900,000

Unrecognized compensation expense

467,000,000,000

Stock-based compensation expense

656,000

15,000

Number of Shares

Granted (in shares)

171,408

Performance-based restricted stock | Executive management | 2011 Plan | Performance based vesting

Stock-Based Compensation

Vesting percentage based upon earnings goal

67.00%

Number of shares that can be vested based upon earning goal

114,272

Fair value of the share based award at the grant date

507,000

1,300,000

Target percentage of non-GAAP operating income achievable

150.00%

Target amount of non-GAAP operating income achievable

32,300,000

Target percentage of non-GAAP operating income achieved

90.00%

Shares for performance achieved or achievable

45,708

Vesting percentage on target of the non-GAAP operating income

33.00%

Performance-based restricted stock | Executive management | 2011 Plan | Performance based vesting | Awards vesting over two years

Stock-Based Compensation

Vesting period

2 years

Vesting percentage on the second anniversary of the grant date

33.00%

Fair value of restricted stock

169,000

Performance-based restricted stock | Executive management | 2011 Plan | Performance based vesting | Awards vesting over three years

Stock-Based Compensation

Vesting period

3 years

Fair value of restricted stock

169,000

Performance-based restricted stock | Executive management | 2011 Plan | Performance based vesting | Awards vesting over 12 months

Stock-Based Compensation

Vesting percentage on the first anniversary of the grant date

33.00%

Performance-based restricted stock | Executive management | 2011 Plan | Performance based vesting | Awards vesting over 14 months

Stock-Based Compensation

Vesting period

14 months

Fair value of restricted stock

169,000

Time-based restricted stock | Executive management | 2011 Plan | Time-based vesting

Stock-Based Compensation

Fair value of the share based award at the grant date

633,000

Shares to be vested on employee stay for the specified period

57,136

Fair value of restricted stock

633,000

Time-based restricted stock | Executive management | 2011 Plan | Time-based vesting | Awards vesting over two years

Stock-Based Compensation

Vesting period

2 years

Vesting percentage on the second anniversary of the grant date

33.00%

Fair value of restricted stock

211,000

Time-based restricted stock | Executive management | 2011 Plan | Time-based vesting | Awards vesting over three years

Stock-Based Compensation

Vesting period

3 years

Vesting percentage on the third anniversary of the grant date

33.00%

Fair value of restricted stock

211,000

Time-based restricted stock | Executive management | 2011 Plan | Time-based vesting | Awards vesting over 12 months

Stock-Based Compensation

Vesting period

1 year

Vesting percentage on the first anniversary of the grant date

33.00%

Fair value of restricted stock

211,000

Restricted stock granted on March 11, 2013 | Managers | 2011 Plan

Stock-Based Compensation

Vesting percentage based upon earnings goal

50.00%

Fair value of the share based award at the grant date

382,000

Unrecognized compensation expense

40,000

Stock-based compensation expense

78,000

144,000

Vesting percentage on the second anniversary of the grant date

25.00%

Vesting percentage on the third anniversary of the grant date

12.50%

Vesting percentage on the fourth anniversary of the grant date

12.50%

Number of Shares

Granted (in shares)

36,000

Restricted stock granted on March 11, 2013 | Managers | 2011 Plan | Awards vesting over two years

Stock-Based Compensation

Vesting period

2 years

Fair value of restricted stock

95,000

Restricted stock granted on March 11, 2013 | Managers | 2011 Plan | Awards vesting over three years

Stock-Based Compensation

Vesting period

3 years

Fair value of restricted stock

48,000

Restricted stock granted on March 11, 2013 | Managers | 2011 Plan | Awards vesting over four years

Stock-Based Compensation

Vesting period

4 years

Fair value of restricted stock

48,000

Restricted stock granted on March 11, 2013 | Managers | 2011 Plan | Awards vesting over 22 months

Stock-Based Compensation

Vesting period

22 months

Fair value of restricted stock

$191,000

DSU | Board of Directors

Stock-Based Compensation

Awards of fully vested shares

15,646

Number of shares awarded in payment and settlement of each vested Deferred Stock Unit.

1

Restricted stock issued to non-employee directors for providing service

15,646

Stockholders_Equity_Details_2

Stockholders' Equity: (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock-Based Compensation
Stock-based compensation expense	$4,000,000	$4,000,000	$2,600,000
Stock Options
Stock-Based Compensation
Stock options awarded (in shares)	0	0	0
Stock-based compensation expense	0	134,000	242,000
Unrecognized stock-based compensation expense related to stock options	0
Summary of options outstanding
Aggregate intrinsic value of options outstanding and exercisable	4,365,510
Total intrinsic value of options exercised	$202,670	$568,335	$563,405
Stock Options | $1.44 - $5.21
Stock option activity, Number of Shares
Outstanding options at the end of the period (in shares)				667,382
Range of Exercise Prices
Exercise price, low end of range (in dollars per share)				$1.44
Exercise price, high end of range (in dollars per share)				$5.21
Stock option activity, Weighted Average Exercise Price
Outstanding options at the end of the period (in dollars per share)				$3.52
Stock Options | $1.44 - $4.36
Stock option activity, Number of Shares
Options exercised (in shares)			-95,092
Stock option activity, Weighted Average Exercise Price
Options exercised (in dollars per share)			$3.66
Stock Options | $1.44 - $4.36 | Minimum
Range of Exercise Prices
Exercise price range, options exercised (in dollars per share)			$1.44
Stock Options | $1.44 - $4.36 | Maximum
Range of Exercise Prices
Exercise price range, options exercised (in dollars per share)			$4.36
Stock Options | $3.71 - $4.36
Stock option activity, Number of Shares
Options cancelled (in shares)			-4,250
Stock option activity, Weighted Average Exercise Price
Options cancelled (in dollars per share)			$4.06
Stock Options | $3.71 - $4.36 | Minimum
Range of Exercise Prices
Exercise price range, options forfeited (in dollars per share)			$3.71
Stock Options | $3.71 - $4.36 | Maximum
Range of Exercise Prices
Exercise price range, options forfeited (in dollars per share)			$4.36
Stock Options | $1.80 - $5.21
Stock option activity, Number of Shares
Outstanding options at the end of the period (in shares)			568,040
Range of Exercise Prices
Exercise price, low end of range (in dollars per share)			$1.80
Exercise price, high end of range (in dollars per share)			$5.21
Stock option activity, Weighted Average Exercise Price
Outstanding options at the end of the period (in dollars per share)			$3.49
Stock Options | $1.80 - $5.00
Stock option activity, Number of Shares
Outstanding options at the beginning of the period (in shares)	485,784
Options exercised (in shares)	-22,884	-77,738
Outstanding options at the end of the period (in shares)		485,784
Range of Exercise Prices
Exercise price, low end of range (in dollars per share)		$3.32
Exercise price, high end of range (in dollars per share)		$5.21
Stock option activity, Weighted Average Exercise Price
Outstanding options at the beginning of the period (in dollars per share)	$3.54
Options exercised (in dollars per share)	$3.88	$3.23
Outstanding options at the end of the period (in dollars per share)		$3.54
Stock Options | $1.80 - $5.00 | Minimum
Range of Exercise Prices
Exercise price range, options exercised (in dollars per share)	$3.32	$1.80
Stock Options | $1.80 - $5.00 | Maximum
Range of Exercise Prices
Exercise price range, options exercised (in dollars per share)	$4.30	$5
Stock Options | $3.32 - $3.85
Stock option activity, Number of Shares
Options cancelled (in shares)		-4,518
Stock option activity, Weighted Average Exercise Price
Options cancelled (in dollars per share)		$3.43
Stock Options | $3.32 - $3.85 | Minimum
Range of Exercise Prices
Exercise price range, options forfeited (in dollars per share)		$3.32
Stock Options | $3.32 - $3.85 | Maximum
Range of Exercise Prices
Exercise price range, options forfeited (in dollars per share)		$3.85
Stock Options | $1.80 - $5.00
Stock option activity, Number of Shares
Outstanding options at the end of the period (in shares)	462,900
Range of Exercise Prices
Exercise price, low end of range (in dollars per share)	$1.80
Exercise price, high end of range (in dollars per share)	$5.21
Stock option activity, Weighted Average Exercise Price
Outstanding options at the end of the period (in dollars per share)	$3.52
Summary of options outstanding
Weighted Average Remaining Contractual Life	4 years 5 months 19 days
Stock Options | $2.68 - $5.21
Stock option activity, Number of Shares
Exercisable options at the end of the period (in shares)	462,900
Stock option activity, Weighted Average Exercise Price
Exercisable options at the end of the period (in dollars per share)	$3.52
Stock Options | $2.68 - $5.21 | Minimum
Range of Exercise Prices
Exercise price range, options exercisable at the end of the period (in dollars per share)	$3.50
Stock Options | $2.68 - $5.21 | Maximum
Range of Exercise Prices
Exercise price range, options exercisable at the end of the period (in dollars per share)	$5.21

SalesType_Lease_Receivables_an

Sales-Type Lease Receivables and Sales-Leaseback Arrangements: (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Net investment in sales-type lease receivables	6,100,000	$1,300,000
Unearned income	435,000	57,000
Lease receivables past due	0
Scheduled maturities of minimum lease payments receivable
2015	2,482,000
2016	1,889,000
2017	1,321,000
2018	498,000
Thereafter	308,000
Future minimum payments receivable	-6,498,000
Less: Current portion	-2,482,000	-866,000
Long-term lease receivable	4,016,000	510,000
Contractual cash obligations of future minimum lease payments by period
2015	2,319,000
2016	1,793,000
2017	929,000
2018	493,000
Thereafter	63,000
Future minimum payments payable	5,597,000
Less: Current portion	-2,319,000	-409,000
Long-term leases payable	3,278,000	466,000
Interest included in contractual cash obligations	416,000
Minimum
Term of lease receivables	24 months
Maximum
Term of lease receivables	36 months

Commitments_and_Contingencies_

Commitments and Contingencies: (Details)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies:
Period after change in control for severance payment if employees are terminated without cause	2 years
Period after change in control for severance payment if employees resign for good reasons	2 years

Quarterly_Financial_Informatio2

Quarterly Financial Information (unaudited): (Details) (USD $)	3 Months Ended												12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information (unaudited):
Net sales	$186,374	$144,947	$159,380	$139,535	$173,368	$139,519	$147,779	$133,518	$147,298	$104,774	$120,042	$119,088	$630,236	$594,184	$491,202
Gross profit	39,529	32,333	35,483	29,482	40,659	29,805	33,561	29,833	32,655	24,012	28,033	27,326	136,827	133,858	112,026
Earnings from operations	6,372	4,564	5,974	-413	9,348	1,155	4,936	1,966	5,440	3,255	5,411	3,612	16,497	17,405	17,718
Net earnings	$3,671	$3,546	$3,563	$301	$5,225	$818	$2,904	$1,098	$3,232	$1,923	$3,219	$2,161	$11,081	$10,045	$10,535
Net earnings per share - basic (in dollars per share)	$0.17	$0.16	$0.17	$0.01	$0.24	$0.05	$0.17	$0.07	$0.19	$0.11	$0.19	$0.13	$0.51	$0.53	$0.62
Net earnings per share - diluted (in dollars per share)	$0.17	$0.16	$0.16	$0.01	$0.24	$0.05	$0.16	$0.07	$0.18	$0.11	$0.18	$0.12	$0.50	$0.52	$0.60

SCHEDULE_II_VALUATION_AND_QUAL1

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts
Valuation and qualifying accounts
Balance at Beginning of Period	$330,689	$222,860	$282,196
Additions	151,714	115,354
Deductions	22,377	7,525	59,336
Balance at End of Period	460,026	330,689	222,860
Allowance for Inventory Obsolescence
Valuation and qualifying accounts
Balance at Beginning of Period	89,076	309,501	416,370
Additions	131,063	151,986	445,453
Deductions	132,762	372,411	552,322
Balance at End of Period	$87,377	$89,076	$309,501