Goodwill and Intangible Assets - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019 USD ($) Reporting_Unit	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Goodwill [Line Items]
Number of reporting units | Reporting_Unit	8
Number of reporting units including goodwill | Reporting_Unit	7
Number of reporting units, fair value in excess of carrying value | Reporting_Unit	3
Goodwill	$ 311,247,000	$ 302,517,000	$ 269,265,000
Clearlink [Member]
Goodwill [Line Items]
Goodwill Impairment Loss	0
Goodwill	74,200,000
Symphony [Member]
Goodwill [Line Items]
Goodwill Impairment Loss	0
Goodwill	41,300,000
Latin America [Member]
Goodwill [Line Items]
Goodwill Impairment Loss	0
Goodwill	19,500,000
Qelp [Member]
Goodwill [Line Items]
Goodwill Impairment Loss	0
Goodwill	$ 10,000,000.0