XML 109 R91.htm IDEA: XBRL DOCUMENT
v3.22.4

Subsequent Events (Details) - USD ($) $ in Millions | Mar. 07, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | May 07, 2021
--- | --- | --- | --- | ---
$18.0 Million Term Loan Facility [Member] |  |  |  |
Subsequent Events [Abstract] |  |  |  |
Face amount |  | $ 18.0 | $ 18.0 | $ 18.0
Subsequent Event [Member] |  |  |  |
Subsequent Events [Abstract] |  |  |  |
Number of shares of Company stock held to receive one share of Toro common stock | 10 |  |  |
Subsequent Event [Member] | $18.0 Million Term Loan Facility [Member] |  |  |  |
Subsequent Events [Abstract] |  |  |  |
Face amount | $ 18.0 |  |  |
Subsequent Event [Member] | Toro [Member] |  |  |  |
Subsequent Events [Abstract] |  |  |  |
Number of shares of Toro common stock issued for every 10 shares of Company stock (in shares) | 1 |  |  |

X
- Definition Number of shares of the Company's common stock held to receive one share of the subsidiary's common stock issued upon completion of spin-off of the wholly owned subsidiary. + References No definition available. + Details
Name: | ctrm_NumberOfSharesOfCommonStockHeldToReceiveStockIssuedUponCompletionOfSpinOff
Namespace Prefix: | ctrm_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares of the subsidiary's common stock that was issued for every 10 shares of the Company's common stock upon completion of spin-off of the wholly owned subsidiary. + References No definition available. + Details
Name: | ctrm_NumberOfSharesOfCommonStockIssuedUponCompletionOfSpinOff
Namespace Prefix: | ctrm_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ctrm_SeniorSecuredTeamLoanFacilityAlphaBankSA2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=ctrm_ToroCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |