Revenue from Contracts with Customers (Disaggregation of Revenues) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 87,955	$ 83,418	$ 203,602
Dayrate drilling
Disaggregation of Revenue [Line Items]
Revenues	79,597	70,976	184,374
Mobilization
Disaggregation of Revenue [Line Items]
Revenues	3,283	3,256	5,365
Reimbursables
Disaggregation of Revenue [Line Items]
Revenues	4,920	5,838	11,237
Early termination
Disaggregation of Revenue [Line Items]
Revenues	0	3,348	1,405
Capital modification
Disaggregation of Revenue [Line Items]
Revenues	153	0	115
Intangible
Disaggregation of Revenue [Line Items]
Revenues	0	0	1,079
Other
Disaggregation of Revenue [Line Items]
Revenues	$ 2	$ 0	$ 27