Intangible Assets, net - Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Cost	$ 348,050	$ 299,416
Accumulated Amortization	(241,060)	(216,849)
Net	106,990	82,567
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Cost	36,500
Accumulated Amortization	(1,274)
Net	35,226	108,000
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	102,600	102,600
Accumulated Amortization	(81,372)	(73,770)
Net	21,228	28,830
Developed technology
Finite-Lived Intangible Assets [Line Items]
Cost	107,200	107,200
Accumulated Amortization	(87,340)	(81,383)
Net	19,860	25,817
Software
Finite-Lived Intangible Assets [Line Items]
Cost	40,744	35,527
Accumulated Amortization	(25,031)	(20,843)
Net	15,713	14,684
Intangibles-in-progress
Finite-Lived Intangible Assets [Line Items]
Cost	10,054	6,391
Accumulated Amortization	0	0
Net	10,054	6,391
Purchased content
Finite-Lived Intangible Assets [Line Items]
Cost	50,552	47,298
Accumulated Amortization	(45,726)	(40,636)
Net	4,826	6,662
Lender licenses
Finite-Lived Intangible Assets [Line Items]
Cost	400	400
Accumulated Amortization	(317)	(217)
Net	$ 83	$ 183