XML 52 R42.htm IDEA: XBRL DOCUMENT v3.23.2

Loans by Type - Schedule of the Credit Exposure of the Loan Portfolio (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Participating Mortgage Loans [Line Items]
Total loans	$ 1,055,848	$ 1,082,906
Loans Subject To Normal Monitoring
Participating Mortgage Loans [Line Items]
Total loans	1,038,107	1,069,586
Performing Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	17,741	12,170
Nonperforming Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	0	1,150
Commercial and industrial
Participating Mortgage Loans [Line Items]
Total loans	534,128	561,616
Commercial and industrial | Loans Subject To Normal Monitoring
Participating Mortgage Loans [Line Items]
Total loans	523,176	549,241
Commercial and industrial | Performing Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	10,952	11,225
Commercial and industrial | Nonperforming Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	0	1,150
Commercial: | Mortgage
Participating Mortgage Loans [Line Items]
Total loans	115,335	108,166
Commercial: | Mortgage | Loans Subject To Normal Monitoring
Participating Mortgage Loans [Line Items]
Total loans	115,335	108,166
Commercial: | Mortgage | Performing Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	0	0
Commercial: | Mortgage | Nonperforming Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	0	0
Commercial: | Construction
Participating Mortgage Loans [Line Items]
Total loans	20,330	17,874
Commercial: | Construction | Loans Subject To Normal Monitoring
Participating Mortgage Loans [Line Items]
Total loans	20,330	17,874
Commercial: | Construction | Performing Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	0	0
Commercial: | Construction | Nonperforming Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	0	0
Faith-based: | Mortgage
Participating Mortgage Loans [Line Items]
Total loans	376,127	387,114
Faith-based: | Mortgage | Loans Subject To Normal Monitoring
Participating Mortgage Loans [Line Items]
Total loans	369,338	386,169
Faith-based: | Mortgage | Performing Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	6,789	945
Faith-based: | Mortgage | Nonperforming Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	0	0
Faith-based: | Construction
Participating Mortgage Loans [Line Items]
Total loans	9,928	8,094
Faith-based: | Construction | Loans Subject To Normal Monitoring
Participating Mortgage Loans [Line Items]
Total loans	9,928	8,094
Faith-based: | Construction | Performing Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	0	0
Faith-based: | Construction | Nonperforming Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans	0	0
Other
Participating Mortgage Loans [Line Items]
Total loans	$ 0	42
Other | Loans Subject To Normal Monitoring
Participating Mortgage Loans [Line Items]
Total loans		42
Other | Performing Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans		0
Other | Nonperforming Loans Subject To Special Monitoring
Participating Mortgage Loans [Line Items]
Total loans		$ 0

X

- Definition

Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable classified as current. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

+ 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_ParticipatingMortgageLoansLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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:

X

- Details

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

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_MortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cass_FaithBasedRealEstateMember
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: