Fair Value of Financial Instruments (Details Textual) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Bank Loan Obligations [Member]
Fair Value of Financial Instruments (Textual) [Abstract]
Liabilities, Fair Value Disclosure	$ 7.5	$ 9.0
Capital Lease Obligations [Member]
Fair Value of Financial Instruments (Textual) [Abstract]
Liabilities, Fair Value Disclosure	2.4	2.8
Business Acquisition Obligations [Member]
Fair Value of Financial Instruments (Textual) [Abstract]
Liabilities, Fair Value Disclosure	$ 8.5	$ 9.1

This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Name:	us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant