The Company and Summary of Significant Accounting Policies Narrative (Details) (USD $)	9 Months Ended	0 Months Ended		0 Months Ended	9 Months Ended
	Sep. 30, 2012 solution	Apr. 04, 2012 IPO	Apr. 02, 2012 IPO	Sep. 13, 2012 Secondary common stock offering [Member]	Sep. 30, 2012 Maximum	Sep. 30, 2012 Minimum
Sale of Stock [Line Items]
Number of Solutions	3
Shares sold at initial public offering		5,000,000		1,337,500
Shares sold at initial public offering by certain stockholders		1,727,000		4,211,250
Shares for the underwriters' over-allotment option		877,500		723,750
Share Price			$ 16.00	$ 28.75
Proceeds from Issuance of Common Stock				$ 38.4
Proceeds from Secondary Offering, Stockholders				121.1
Proceeds from secondary public offering, net of offering costs				36.0
Aggregate gross offering proceeds to Company		80,000,000
Aggregate gross offering proceeds to seling stockholders		27,600,000
Proceeds from IPO, Net of Two Year Offering Costs		$ 70.5
Professional service revenue recognition period					P12W	P2W
Maintenance services revenue recognition period	1 year