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Summary of Significant Accounting Policies (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2012 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Accounting Policies [Abstract] |  |  |  |
Shipping and handling fees charged to customers |  | $ 10,700,000 | $ 12,800,000 | $ 13,000,000
Cost of shipping and handling fees |  | 13,600,000 | 13,100,000 | 11,000,000
Depreciation |  | 4,300,000 | 3,900,000 | 3,700,000
Amortization expense of capitalized software |  | 2,700,000 | 1,700,000 | 2,600,000
Goodwill impairment | $ 28,300,000 | $ 28,306,000 | $ 0 | $ 0
Treasury stock, shares acquired |  | 2,474 | 3,759 | 2,703
Buildings and improvements | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, useful life |  | 20 years |  |
Buildings and improvements | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, useful life |  | 30 years |  |
Machinery and equipment, furniture and fixtures, and vehicles | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, useful life |  | 3 years |  |
Machinery and equipment, furniture and fixtures, and vehicles | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, useful life |  | 10 years |  |
Capitalized software | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, useful life |  | 3 years |  |
Capitalized software | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, useful life |  | 5 years |  |

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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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