Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Information
Net sales	$ 295,959us-gaap_SalesRevenueNet	$ 325,337us-gaap_SalesRevenueNet
Gross profit	39,105us-gaap_GrossProfit	48,705us-gaap_GrossProfit
Depreciation and amortization expense	2,699	2,760
Operating profit (loss)	(5,207)us-gaap_OperatingIncomeLoss	6,128us-gaap_OperatingIncomeLoss
Assets	375,665us-gaap_Assets		389,190us-gaap_Assets
Continuing operations
Segment Information
Net sales	295,959	325,337
Gross profit	39,105	48,705
Depreciation and amortization expense	2,699	2,573
Operating profit (loss)	(5,207)	6,128
Continuing operations \| Commercial
Segment Information
Net sales	236,534	252,121
Gross profit	33,701	41,534
Depreciation and amortization expense	646	612
Operating profit (loss)	7,819	17,658
Continuing operations \| Public Sector
Segment Information
Net sales	36,601	36,420
Gross profit	3,342	3,542
Depreciation and amortization expense	7	13
Operating profit (loss)	675	574
Continuing operations \| MacMall
Segment Information
Net sales	22,834	36,799
Gross profit	2,063	3,631
Depreciation and amortization expense	18	22
Operating profit (loss)	(70)	821
Continuing operations \| Corporate and Other
Segment Information
Net sales	(10)	(3)
Gross profit	(1)	(2)
Depreciation and amortization expense	2,028	1,926
Operating profit (loss)	$ (13,631)	$ (12,925)

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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