Goodwill and Intangible Assets - Summary of Activity Related to Goodwill (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Accumulated Impairment Losses [Roll Forward]
Goodwill, Accumulated impairment losses	$ 0
Goodwill [Roll Forward]
Goodwill, Net carrying amount, beginning balance	220,459,000
Goodwill, Net carrying amount, ending balance	231,787,000	$ 220,459,000
FolioDynamix
Accumulated Impairment Losses [Roll Forward]
Goodwill, Accumulated impairment losses		(39,700,000)
Goodwill [Roll Forward]
Goodwill, Net carrying amount, beginning balance	166,200,000
Goodwill, Net carrying amount, ending balance		166,200,000
Vertical cloud
Goodwill, Gross [Roll Forward]
Goodwill, Gross carrying amount, beginning balance	260,115,000	260,115,000
Acquisitions, Gross carrying amount	11,328,000
Goodwill, Gross carrying amount, ending balance	271,443,000	260,115,000
Accumulated Impairment Losses [Roll Forward]
Goodwill, Accumulated impairment losses, beginning balance	(39,656,000)	0
Goodwill, Accumulated impairment losses, ending balance	(39,656,000)	(39,656,000)
Goodwill [Roll Forward]
Goodwill, Net carrying amount, beginning balance	220,459,000	260,115,000
Acquisitions, Net carrying amount	11,328,000
Goodwill, Net carrying amount, ending balance	$ 231,787,000	220,459,000
Vertical cloud | FolioDynamix
Accumulated Impairment Losses [Roll Forward]
Goodwill, Accumulated impairment losses		$ (39,656,000)