Amount of cash paid to acquire the entity.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Basis of Presentation (Details) (USD $)	12 Months Ended
Basis of Presentation (Details) (USD $)	Dec. 31, 2011 item	Apr. 02, 2011 Emergent Group Inc.	Apr. 01, 2011 Emergent Group Inc.	May 31, 2011 Equipment rental division of a medical equipment manufacturer	Oct. 03, 2011 Surgical laser equipment service provider, one	Jan. 03, 2012 Surgical laser equipment service provider, two
Basis of Presentation
Number of reporting segments	3
Acquisitions
Total purchase price		$ 65,300,000	$ 65,300,000	$ 6,500,000	$ 5,500,000
Cash consideration		60,000,000	60,000,000	6,500,000		16,400,000
Amount of debt included in purchase price and paid off at closing			$ 19,781,000		$ 500,000