Income Taxes - Schedule of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits - January 1	$ 1,847	$ 0
Increases in prior year positions	27	632
Reversals of prior year positions	(1,215)	0
Increases in tax positions taken in current year	0	1,215
Statute expirations	(215)	0
Unrecognized tax benefits - December 31	$ 444	$ 1,847