Pro Forma Adjustments for Additional Amortization of That Would Have Been Recognized on the Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Interest expense	$ 24,300	$ 7,500	$ 2,100
Income tax (benefit) expense	$ (8,210)	2,952	$ (9,335)
Tapingo and LevelUp | Pro Forma
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Depreciation and amortization		4,893
Transaction costs		(6,923)
Stock-based compensation		3,748
Interest expense		1,601
Income tax (benefit) expense		$ (1,548)