Drilling and Other Property and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Gain (loss) on disposition of assets		$ (1,072)	$ (241)	$ 10,500
Asset held for sale		1,000
Semisubmersible Rig [Member]
Property, Plant and Equipment [Line Items]
Gain (loss) on disposition of assets		14,300
Asset held for sale		1,000
Semisubmersible Rig [Member] | Forecast [Member]
Property, Plant and Equipment [Line Items]
Gain (loss) on disposition of assets	$ 3,500
Other Property and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gain (loss) on disposition of assets		$ (15,400)