The Company and Summary of Significant Accounting Policies Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Sale of Stock [Line Items]
No. of healthcare and non healthcare installations worldwide	1,200
Document Period End Date	Dec. 31, 2013
Maintenance services revenue recognition period	1 year
Accumulated deficit	$ (64,433,000)	$ (53,968,000)
Cash, Cash Equivalents, and Short-term Investments	127,700,000
Restricted cash	305,000	304,000
Capitalized Computer Software, Additions	2,100,000	1,100,000	300,000
No. of revenue customers with 10% or greater concentration	0	0	0
No of Acct Rec customers with 10% or greater concentration	0	0
Impairment of Intangibles (Excl. Goodwill)	0	0	0
Goodwill, Impairment Loss	0	0	0
No of operating segments	2
Deferred Tax Assets, Valuation Allowance	21,030,000	21,193,000	22,687,000	21,588,000
Maximum
Sale of Stock [Line Items]
Professional service revenue recognition period	P12W
Product Liability, Warranty Period	3 years
Minimum
Sale of Stock [Line Items]
Professional service revenue recognition period	P2W
Product Liability, Warranty Period	1 year
Restricted stock units
Sale of Stock [Line Items]
Vesting percentage on 1st anniversary of grant (percent)	33.33%
Vesting percentage on 2nd anniversary of grant (percent)	33.33%
Vesting percentage on 3rd anniversary of grant (percent)	33.34%
Director | Restricted Stock [Member]
Sale of Stock [Line Items]
Vesting percentage on 1st anniversary of grant (percent)	50.00%	50.00%
Vesting percentage on 2nd anniversary of grant (percent)	50.00%	50.00%
Director | Restricted stock units
Sale of Stock [Line Items]
Vesting percentage on 1st anniversary of grant (percent)	100.00%
Sharon O'Keefe [Member] | Service | University of Chicago Medical Center [Member]
Sale of Stock [Line Items]
Related Party Transaction, Amounts of Transaction	500,000	500,000	0
John N. McMullen [Member] | Service | Hewlett-Packard Company [Member]
Sale of Stock [Line Items]
Related Party Transaction, Amounts of Transaction	$ 9,200	$ 0	$ 0
Property and Equipment, excluding LHI and major ERP [Member]
Sale of Stock [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Not major ERP implementation [Member] | Software and Software Development Costs [Member]
Sale of Stock [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Major ERP implementation [Member] | Software and Software Development Costs [Member]
Sale of Stock [Line Items]
Property, Plant and Equipment, Useful Life	5 years