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Operating Leases - Operating Lease Expense Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating lease expense components:
Leases with initial term of greater than 12 months	$ 8,588	$ 8,481	$ 8,325
Leases with initial term of 12 months or less	4,159	4,852	4,718
Total operating lease expense	$ 12,747	$ 13,333	$ 13,043

X

- Definition

Operating Lease, Expense, Current

+ References

No definition available.

+ Details

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Namespace Prefix:	ois_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Operating Lease, Expense, Noncurrent

+ References

No definition available.

+ Details

Name:	ois_OperatingLeaseExpenseNoncurrent
Namespace Prefix:	ois_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_LeaseCostAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration