XML 57 R46.htm IDEA: XBRL DOCUMENT
v3.21.2

Long-term Debt - Repurchase of Outstanding Debt (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 33 Months Ended
--- | --- | --- | --- | ---
Mar. 19, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021
Debt Instrument [Line Items] |  |  |  |  |  |
Cash Paid |  |  |  | $ 125,952 | $ 20,078 |
Non-cash Gains Recognized |  |  |  | 4,022 | 10,721 |
1.5% Convertible Unsecured Senior Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal Amount |  | $ 0 | $ 17,200 | 131,400 | 34,881 | $ 174,000
Carrying Value of Liability |  | 0 | 15,425 | 129,974 | 30,799 |
Cash Paid | $ 120,000 | 0 | 9,483 | 125,952 | 20,078 | $ 152,800
Non-cash Gains Recognized |  | $ 0 | $ 5,942 | $ 4,022 | $ 10,721 |

X
- Definition Debt Instrument, Amount Repurchased + References No definition available. + Details
Name: | ois_DebtInstrumentAmountRepurchased
Namespace Prefix: | ois_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Debt Instrument, Principal Amount Repurchased + References No definition available. + Details
Name: | ois_DebtInstrumentPrincipalAmountRepurchased
Namespace Prefix: | ois_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfConvertibleDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ois_A15ConvertibleUnsecuredSeniorNotesDueFebruary2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |