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Business Acquisition (Details) (Health Plus [Member], USD $)
In Thousands, unless otherwise specified
May 01, 2012
Health Plus [Member]
 
Business Acquisition, Purchase Price Allocation [Abstract]  
Prepaid expenses and other current assets $ 1,111
Property, equipment and software 3,849
Intangible assets 24,900
Other long-term assets 282
Goodwill 56,251
Total assets acquired 86,393
Accrued payroll related liabilities (1,225)
Net assets acquired $ 85,168