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Business Segments (Assets by Segment) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Assets	$ 791,336	$ 889,926
Operating Segments | Drilling & Downhole
Segment Reporting Information [Line Items]
Assets	313,493	314,375
Operating Segments | Completions
Segment Reporting Information [Line Items]
Assets	351,908	356,645
Operating Segments | Production
Segment Reporting Information [Line Items]
Assets	83,150	92,949
Corporate
Segment Reporting Information [Line Items]
Assets	$ 42,785	$ 125,957

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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