Commitments and Contingencies (Details 3) (Freedom Medical, Inc. lawsuit)	Dec. 30, 2011 item
Freedom Medical, Inc. lawsuit
Commitments and contingencies
Number of insurance companies filing complaints	2

Represents the number of insurance companies filing complaints.

No definition available.

Name:	uhsi_NumberOfInsuranceCompaniesFilingComplaints
Namespace Prefix:	uhsi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant