Acquisitions (Details) (USD $)	3 Months Ended				3 Months Ended
	Mar. 30, 2013 Pure Wellness [Member]	Mar. 04, 2013 Pure Wellness [Member]	Mar. 04, 2013 Pure Wellness [Member] Customer relationships [Member]	Mar. 04, 2013 Pure Wellness [Member] Existing technologies [Member]	Mar. 30, 2013 Labotix [Member]	Mar. 18, 2013 Labotix [Member]
Business Acquisition, Purchase Price Allocation [Abstract]
Current assets		$ 1,337,000
Property and equipment		231,000
Current liabilities		(1,301,000)
Total net tangible assets		267,000
Total intangible assets acquired		20,269,000	10,464,000	9,805,000		5,200,000
Goodwill		48,581,000				10,700,000
Total purchase price		69,117,000				18,000,000
Business Acquisition, Effective Date of Acquisition	Mar. 04, 2013				Mar. 18, 2013
Business Acquisition, Percentage of Voting Interests Acquired						100.00%
Business Acquisition, Contingent Consideration, at Fair Value		$ 19,000,000
Business Combination, Contingent Consideration Arrangements, Description	payable if we achieve certain revenue milestones from PureWellness solutions and services during the period commencing on August 1, 2013 and ending April 30, 2015
Business Combination, Goodwill Recognized, Segment Allocation	All of the goodwill was allocated to our Domestic operating segment				The goodwill was allocated to our Domestic operating segment
Business Acquisition, Purchase Price Allocation, Goodwill, Expected Tax Deductible Amount, Description	is expected to be deductible for tax purposes				is not expected to be deductible for tax purposes
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years				5 years