XML 88 R65.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Long-Term Debt, $11.0 Million Term Loan Facility (Details) |  |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jan. 16, 2024 USD ($) | Dec. 06, 2019 USD ($) | Dec. 02, 2019 Tranche | Mar. 31, 2023 | Dec. 31, 2023 USD ($) Installment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Nov. 22, 2019 Subsidiary
Long-Term Debt [Abstract] |  |  |  |  |  |  |  |
Repayment of loan |  |  |  |  | $ 53,864,500 | $ 24,493,000 | $ 5,178,500 |
Debt related to assets held for sale, net |  |  |  |  | 2,406,648 | $ 0 |  |
$11.0 Million Term Loan Facility [Member] |  |  |  |  |  |  |  |
Long-Term Debt [Abstract] |  |  |  |  |  |  |  |
Number of ship-owning subsidiaries entering into term loan facility | Subsidiary |  |  |  |  |  |  |  | 2
Face amount |  |  |  |  | $ 11,000,000 |  |  |
Number of tranches drawn | Tranche |  |  | 2 |  |  |  |  |
Term of loan |  |  |  |  | 5 years |  |  |
Number of payment installments | Installment |  |  |  |  | 20 |  |  |
Frequency of periodic payment |  |  |  |  | quarterly |  |  |
Installment payment |  |  |  |  | $ 400,000 |  |  |
Balloon installment payable at maturity |  |  |  |  | $ 3,000,000 |  |  |
Maturity date |  |  |  |  | Dec. 02, 2024 |  |  |
Margin on variable rate |  |  |  | 0.045% |  |  |  |
$11.0 Million Term Loan Facility [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Long-Term Debt [Abstract] |  |  |  |  |  |  |  |
Repayment of loan | $ 2,400,000 |  |  |  |  |  |  |
$11.0 Million Term Loan Facility [Member] | M/V Magic Moon [Member] |  |  |  |  |  |  |  |
Long-Term Debt [Abstract] |  |  |  |  |  |  |  |
Debt related to assets held for sale, net |  |  |  |  | $ 2,400,000 |  |  |
$11.0 Million Term Loan Facility [Member] | M/V Magic Moon [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Long-Term Debt [Abstract] |  |  |  |  |  |  |  |
Repayment of loan | $ 2,400,000 |  |  |  |  |  |  |
$7.5 Million Bridge Loan [Member] |  |  |  |  |  |  |  |
Long-Term Debt [Abstract] |  |  |  |  |  |  |  |
Face amount |  | $ 7,500,000 |  |  |  |  |  |
Repayment of loan |  | $ 7,500,000 |  |  |  |  |  |

X
- Definition The number of periodic payment installments in which the debt is to be repaid. + References No definition available. + Details
Name: | ctrm_DebtInstrumentNumberOfPaymentInstallments
Namespace Prefix: | ctrm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of tranches in which the debt instrument was drawn down. + References No definition available. + Details
Name: | ctrm_DebtInstrumentNumberOfTranches
Namespace Prefix: | ctrm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt related to assets held for sale, classified as current. + References No definition available. + Details
Name: | ctrm_DebtRelatedToAssetsHeldForSaleCurrent
Namespace Prefix: | ctrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of the Company's ship-owning subsidiaries that entered into a senior secured term loan facility. + References No definition available. + Details
Name: | ctrm_NumberOfShipOwningSubsidiariesEnteringIntoTermLoanFacility
Namespace Prefix: | ctrm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
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 -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482900/835-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-2 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482949/835-30-55-8 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Description of the frequency of periodic payments (monthly, quarterly, annual). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480848/942-470-50-3 + Details
Name: | us-gaap_DebtInstrumentFrequencyOfPeriodicPayment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DebtInstrumentMaturityDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of the required periodic payments including both interest and principal payments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480848/942-470-50-3 + Details
Name: | us-gaap_DebtInstrumentPeriodicPayment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_RepaymentsOfSecuredDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ctrm_SeniorSecuredTeamLoanFacilityAlphaBankSA2019Member
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: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=ctrm_MagicMoonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ctrm_BridgeLoan75MillionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |