Segment and Geographic Information - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) segment	Jun. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			4
(Loss) income from operations	$ 4,175	$ 4,373	$ 8,429	$ 8,304
Corporate, Non-Segment
Segment Reporting Information [Line Items]
(Loss) income from operations	$ 1,272	3,133	$ 2,522	5,651
Pro Forma | Personal Information Services
Segment Reporting Information [Line Items]
(Loss) income from operations		2,400		4,400
Pro Forma | Corporate, Non-Segment
Segment Reporting Information [Line Items]
(Loss) income from operations		$ (1,800)		$ (3,300)