Acquisitions - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 24, 2011
Belfast Resort and Conference Center
Business Acquisition [Line Items]
Business acquisition, date	June 24, 2011
Business acquisition, description of acquired entity	The Company purchased certain net assets of the Point Lookout facility located near Belfast, Maine for a purchase price of $7,700, which was adjusted for certain working capital adjustments to arrive at a total cash consideration of $6,988.
Business acquisition, acquired entity	Point Lookout
Business acquisition, consideration		$ 7,700,000
Business acquisition, cash paid		6,988,000
Business acquisition, reason for business combination	The facility will serve as the Company's new client and employee training center
Proxsys LLC | Definitive Acquisition Agreement
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement	July 21, 2011
Business acquisition, acquired entity	Proxsys LLC
Business acquisition, cash paid	28,000,000
Business Acquisition, Contingent Consideration, Potential Cash payment	8,000,000
Business acquisition, reason for business combination	The merger is expected to broaden the Company's product offerings by bringing hospital order management capabilities to the Company's service platform.