XML 38 R28.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Acquisition - Narrative (Details) - USD ($) $ in Thousands |  | 9 Months Ended
--- | --- | ---
Apr. 14, 2022 | Sep. 30, 2022 | Sep. 30, 2021
Business Acquisition [Line Items] |  |  |
Payments to acquire business |  | $ 8,125 | $ 0
E-Flow Control Holdings Limited |  |  |
Business Acquisition [Line Items] |  |  |
Payments to acquire business | $ 8,100 |  |

X
- 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. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=ois_EFlowControlHoldingsLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |