Acquisitions (Details) (LER [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2012
LER [Member]
Summary of the purchase price allocation for the Company's acquisition of LER
Cash and cash equivalents	$ 0.5
Trade accounts receivable	2.1
Prepaid and other assets	0.1
Property and equipment	0.1
Intangible assets subject to amortization	0.5
Goodwill	0.7
Current liabilities	(1.8)
Total	$ 2.2

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

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The amount of cash and cash equivalents acquired in a business combination.

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The amount of acquisition cost of a business combination allocated to prepaid expenses and other current assets. Does not include amounts allocated to cash and cash equivalents, marketable securities, receivables, inventory, and assets not to be used.

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The amount of acquisition cost of a business combination allocated to receivables.

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The amount of acquisition cost of a business combination allocated to current liabilities of the acquired entity.

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

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-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 51

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 52

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-Paragraph 53

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The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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