Sale of assets and property held for sale	9 Months Ended
Sep. 30, 2012
Sale of assets and property held for sale [Abstract]
Sale of assets and property held for sale	Note 3 — Sale of assets and property held for sale In the second quarter of 2012, in conjunction with the construction of a new distribution center in McCook, Illinois and the relocation of the Company’s headquarters to Chicago, Illinois, the Company sold three properties; its Addison, Illinois distribution center, its Vernon Hills, Illinois distribution center and a Des Plaines, Illinois administrative building. The Company received cash proceeds of $8.8 million for the sale of the three facilities, which were included in the MRO segment, resulting in a gain of $2.1 million. Operations currently conducted at the Addison, Illinois and Vernon Hills, Illinois distribution centers will be transferred to the new McCook, Illinois facility during the fourth quarter of 2012 and the first quarter of 2013. The Company has entered into various arrangements to lease these facilities back from the buyer for transition purposes until the second quarter of 2013. In addition to these three property sales, the Company allowed the lease of another Des Plaines, Illinois facility to expire during the second quarter of 2012 and it was actively marketing its former Des Plaines, Illinois headquarters and packaging facility. The net book value of the former headquarters’ land and building of $1.9 million has been reclassified to Property held for sale in the Condensed Consolidated Balance Sheets and has not been depreciated after being classified as held for sale. This property was sold subsequent to September 30, 2012 (See Note 11 – Subsequent Event).

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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