Significant Accounting Policies (Detail)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) revenue_source	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Accounting Policies [Abstract]
Restricted cash and cash equivalents	$ 300,000		$ 300,000		$ 400,000
Goodwill impairment loss			0		0
Impairment of intangible assets			0		0
Impairment of cost method investments			$ 0		$ 0
Significant Accounting Policies [Line Items]
Initial subscription arrangement, minimum			1 year
Initial subscription arrangement, maximum			3 years
Deferred revenue	38,500,000		$ 38,500,000
Interest paid	0	$ 0	0	$ 0
Income taxes paid	400,000	0	400,000	0
Capital expenditures incurred but not yet paid	100,000	$ 400,000	100,000	$ 1,000,000
Proceeds from escrow releases	11,300,000		$ 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	$ 3,100,000		$ 3,100,000
VelocityEHS
Significant Accounting Policies [Line Items]
Number of sources of revenue | revenue_source			2