XML 73 R59.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Loans - Schedule of the Credit Exposure of the Loan Portfolio (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | $ 960,567 | $ 891,676
Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 450,336 | 298,984
Real Estate, Commercial, Mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 108,759 | 100,419
Real Estate, Commercial, Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 24,797 | 25,090
Real Estate, Faith-Based, Mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 355,582 | 333,661
Real Estate, Faith-based, Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 14,664 | 23,818
PPP |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 6,299 | 109,704
Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 130 | 0
Loans Subject To Normal Monitoring |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 947,973 | 873,092
Loans Subject To Normal Monitoring | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 440,607 | 284,882
Loans Subject To Normal Monitoring | Real Estate, Commercial, Mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 108,759 | 99,044
Loans Subject To Normal Monitoring | Real Estate, Commercial, Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 24,797 | 25,090
Loans Subject To Normal Monitoring | Real Estate, Faith-Based, Mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 352,717 | 330,554
Loans Subject To Normal Monitoring | Real Estate, Faith-based, Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 14,664 | 23,818
Loans Subject To Normal Monitoring | PPP |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 6,299 | 109,704
Loans Subject To Normal Monitoring | Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 130 |
Performing Loans Subject To Special Monitoring |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 12,594 | 18,584
Performing Loans Subject To Special Monitoring | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 9,729 | 14,102
Performing Loans Subject To Special Monitoring | Real Estate, Commercial, Mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | 1,375
Performing Loans Subject To Special Monitoring | Real Estate, Commercial, Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | 0
Performing Loans Subject To Special Monitoring | Real Estate, Faith-Based, Mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 2,865 | 3,107
Performing Loans Subject To Special Monitoring | Real Estate, Faith-based, Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | 0
Performing Loans Subject To Special Monitoring | PPP |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | 0
Performing Loans Subject To Special Monitoring | Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 |
Nonperforming Loans Subject To Special Monitoring |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | 0
Nonperforming Loans Subject To Special Monitoring | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | 0
Nonperforming Loans Subject To Special Monitoring | Real Estate, Commercial, Mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | 0
Nonperforming Loans Subject To Special Monitoring | Real Estate, Commercial, Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | 0
Nonperforming Loans Subject To Special Monitoring | Real Estate, Faith-Based, Mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | 0
Nonperforming Loans Subject To Special Monitoring | Real Estate, Faith-based, Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | 0
Nonperforming Loans Subject To Special Monitoring | PPP |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 0 | $ 0
Nonperforming Loans Subject To Special Monitoring | Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | $ 0 |

X
- Definition Amount excluding accrued interest, after allowance for credit loss, of financing receivable classified as current. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossCurrent
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_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=cass_CommercialAndIndustrialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=cass_RealEstateCommercialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=cass_RealEstateCommercialConstructionLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=cass_RealEstateFaithbasedMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=cass_RealEstateFaithbasedConstructionLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=cass_PaycheckProtectionProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=cass_OtherLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cass_CreditExposureOfLoanPortfolioAxis=cass_LoansSubjectToNormalMonitoringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cass_CreditExposureOfLoanPortfolioAxis=cass_PerformingLoansSubjectToSpecialMonitoringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cass_CreditExposureOfLoanPortfolioAxis=cass_NonperformingLoansSubjectToSpecialMonitoringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |