Pension Plan - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Contributions to the plan	$ 0	$ 0
Defined benefit plan pension obligation retirement benefit percentage				53.00%
Defined benefit plan pension obligation, loss on settlement			$ 2,673,000	$ 1,546,000
Net periodic benefit costs, total		$ 923,000,000