Fresh Start Accounting (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended		12 Months Ended
	Feb. 02, 2021	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2020
Reorganization, Chapter 11 [Line Items]
Identifiable Assets	$ 1,456,804	$ 1,199,508	$ 1,199,508	$ 1,191,012
Postconfirmation Liabilities	554,118	457,775	457,775	$ 408,128
Internal Rate Of Return				17.60%
Perpetuity Growth Rate				3.00%
Reorganization Expenses, Discount Rate				5.30%
Reorganization Expenses, Cash Used In Operating Activities	3,100			$ 13,700
Reorganization items, net	335,560	0		0	$ (19,520)
Reorganization Expenses, Professional Fees, Expense				2,700
Reorganization Expenses, Professional Fees, Lease Rejection Damages				400
Well Services [Member]
Reorganization, Chapter 11 [Line Items]
Identifiable Assets		636,256	636,256	533,327
Shut Down Cost		$ 8,900
Inventory write down			6,500
Other ShutDown Cost			$ 2,400
Maximum [Member]
Reorganization, Chapter 11 [Line Items]
Bankruptcy Proceedings, Enterprise Value				880,000
Minimum [Member]
Reorganization, Chapter 11 [Line Items]
Bankruptcy Proceedings, Enterprise Value				710,000
Reorganization, Chapter 11, Predecessor, before Adjustment [Member]
Reorganization, Chapter 11 [Line Items]
Identifiable Assets	1,497,411			1,456,800
Postconfirmation Liabilities	$ 2,076,125			$ 2,076,100