Business Segment Information - Summary of Revenue and Gross Profit (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting [Abstract]
Gross profit (loss) for the segments	$ 16,642	$ 3,330	$ (5,824)	$ 10,507	$ (57,007)	$ 15,853	$ 12,273	$ 5,385	$ 24,655	$ (23,496)	$ 14,275
General and administrative expenses									(85,883)	(110,903)	(48,577)
Sales and marketing expenses									(54,666)	(63,813)	(15,828)
Research and development expenses									(4,411)	(9,172)	(5,864)
Depreciation and amortization expenses									(13,722)	(11,607)	(1,598)
Impairment of assets									(61,114)	(112,070)
Acquisition-related income (expenses), net										31,427	(248)
Loss from equity method investments									(5,983)	(4,504)
Foreign exchange (loss) gain, net									13,169	5,944	(7,234)
Change in fair value of warrant liability									(100,286)
Gain on debt conversion									61,118
Interest expenses, net									(39,219)	(34,690)	(9,110)
Finance income from ABG										764
Other (expenses) income, net									(10,333)	2,501	2,010
Loss before income taxes									$ (276,675)	$ (329,619)	$ (72,174)