Revenue From Contracts with Customers - Disaggregation of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 10,224	$ 45,073		$ 70,099	$ 158,310
Dayrate drilling
Disaggregation of Revenue [Line Items]
Revenues	8,367	39,894		59,255	144,478
Mobilization
Disaggregation of Revenue [Line Items]
Revenues	300	2,010		2,753	4,447
Reimbursables
Disaggregation of Revenue [Line Items]
Revenues	404	2,795		4,743	7,349
Early termination
Disaggregation of Revenue [Line Items]
Revenues	1,153	314		3,348	815
Capital modification
Disaggregation of Revenue [Line Items]
Revenues	0	43		0	115
Intangible
Disaggregation of Revenue [Line Items]
Revenues	0	0	$ 1,100	0	1,079
Other
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 17		$ 0	$ 27