XML 42 R36.htm IDEA: XBRL DOCUMENT
v3.22.2

Share-based compensation - Restricted stock units - Cost related to non-vested awards (Details) - Restricted stock units $ in Thousands | Jun. 30, 2022 USD ($)
--- | ---
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
2022 | $ 991
2023 | 1,561
2024 | 970
2025 | 225
Total | $ 3,747

X
- Definition Unrecognized cost of unvested share-based compensation awards yet to be recognized in year four. + References No definition available. + Details
Name: | asc_EmployeeServiceShareBasedCompensationNonVestedAwardsTotalCompensationCostToBeRecognizedInYearFour
Namespace Prefix: | asc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unrecognized cost of unvested share-based compensation awards yet to be recognized in next twelve months. + References No definition available. + Details
Name: | asc_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostToBeRecognizedInNextTwelveMonths
Namespace Prefix: | asc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unrecognized cost of unvested share-based compensation awards yet to be recognized in year three. + References No definition available. + Details
Name: | asc_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostToBeRecognizedInYearThree
Namespace Prefix: | asc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unrecognized cost of unvested share-based compensation awards yet to be recognized in current year. + References No definition available. + Details
Name: | asc_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostToBeRecognizedInYearTwo
Namespace Prefix: | asc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |