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Performance stock units expense.

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- Definition

Range in percentage that the participants may earn of their target award.

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Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Market Price At Which Eligible Employees Are Granted Options To Purchase Shares

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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-Name Accounting Standards Codification
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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Stock-Based Compensation and Stock Awards - Performance Unit Awards - Additional Information (Details) - Performance Unit Awards $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) Component $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Oct. 28, 2022 $ / shares	Oct. 28, 2021 $ / shares	Oct. 28, 2020 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price (in dollars per share) \| $ / shares	$ 23.28	$ 23.54	$ 23.86	$ 29.38	$ 29.88	$ 32.05
Percentage of grant share price (as a percentage)	126.20%	126.90%	134.30%
Number of components companies in the Philadelphia Oil Service Index \| Component	15
Performance unit compensation expense	$ 2.9	$ 5.5	$ 4.0
Income tax benefit recognized	0.0	$ 0.7	$ 0.8
Unrecognized compensation expense related to share based compensation	$ 5.6
Period of recognition for unrecognized compensation expense related to nonvested stock options (in years)	2 years 2 months 12 days
Anti-dilutive performance share units (in shares) \| shares	0	325	349
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Participants earning under the term (as a percentage)	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Participants earning under the term (as a percentage)	200.00%