Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2017 USD ($) revenue_source	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Significant Accounting Policies [Line Items]
Goodwill impairment loss	$ 0		$ 0
Impairment of intangible assets	0		0
Impairment of cost method investments	0		0
Restricted cash and cash equivalents	$ 400,000		$ 400,000
Initial subscription arrangement, minimum	1 year
Initial subscription arrangement, maximum	3 years
Deferred revenue	$ 37,300,000
Interest paid	0	$ 0
Income taxes paid	0	0
Capital expenditures incurred but not yet paid	400,000	$ 1,200,000
Proceeds from escrow releases	$ 11,300,000
Bolt
Significant Accounting Policies [Line Items]
Subscription period	1 month
FolioDynamix
Significant Accounting Policies [Line Items]
Initial subscription arrangement, minimum	3 years
Initial subscription arrangement, maximum	5 years
Deferred revenue	$ 3,900,000
VelocityEHS
Significant Accounting Policies [Line Items]
Number of sources of revenue | revenue_source	2