Restructuring - Schedule of Reconciliation of Restructuring Liability (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Restructuring And Related Activities [Abstract]
Balance at beginning of period	$ 1,568	$ 185	$ 185
Plus: Amounts charged to cost and expense	553	$ 2,063	6,014
Less: Amounts paid	(1,988)		(4,631)
Balance at end of period	$ 133		$ 1,568