XML 70 R54.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Loans (Schedule of the Credit Exposure of the Loan Portfolio) (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Participating Mortgage Loans [Line Items] |  |  |
Total Loans |  | $ 659,055 | $ 669,346
Loans Subject To Normal Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [1] | 644,141 | 649,508
Performing Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] | 11,779 | 19,350
Nonperforming Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] | 3,135 | 488
Commercial and Industrial [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans |  | 193,430 | 203,350
Commercial and Industrial [Member] | Loans Subject To Normal Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [1] | 190,303 | 199,837
Commercial and Industrial [Member] | Performing Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] | $ 3,127 | $ 3,513
Commercial and Industrial [Member] | Nonperforming Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] |  |
Real Estate Commercial Mortgage [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans |  | $ 108,836 | $ 117,754
Real Estate Commercial Mortgage [Member] | Loans Subject To Normal Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [1] | 104,642 | 103,097
Real Estate Commercial Mortgage [Member] | Performing Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] | 1,162 | 14,296
Real Estate Commercial Mortgage [Member] | Nonperforming Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] | 3,032 | $ 361
Real Estate Commercial Construction [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans |  | 1,182 |
Real Estate Commercial Construction [Member] | Loans Subject To Normal Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [1] | $ 1,182 |
Real Estate Commercial Construction [Member] | Performing Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] |  |
Real Estate Commercial Construction [Member] | Nonperforming Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] |  |
Real Estate Church Related Mortgage [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans |  | $ 306,728 | $ 305,887
Real Estate Church Related Mortgage [Member] | Loans Subject To Normal Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [1] | 299,135 | 304,219
Real Estate Church Related Mortgage [Member] | Performing Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] | 7,490 | 1,541
Real Estate Church Related Mortgage [Member] | Nonperforming Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] | 103 | 127
Real Estate Church Related Construction [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans |  | 28,957 | 18,612
Real Estate Church Related Construction [Member] | Loans Subject To Normal Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [1] | $ 28,957 | $ 18,612
Real Estate Church Related Construction [Member] | Performing Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] |  |
Real Estate Church Related Construction [Member] | Nonperforming Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] |  |
Industrial Revenue Bonds [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans |  | $ 19,831 | $ 23,348
Industrial Revenue Bonds [Member] | Loans Subject To Normal Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [1] | $ 19,831 | $ 23,348
Industrial Revenue Bonds [Member] | Performing Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] |  |
Industrial Revenue Bonds [Member] | Nonperforming Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] |  |
Other [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans |  | $ 91 | $ 395
Other [Member] | Loans Subject To Normal Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [1] | $ 91 | $ 395
Other [Member] | Performing Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] |  |
Other [Member] | Nonperforming Loans Subject To Special Monitoring [Member] |  |  |
Participating Mortgage Loans [Line Items] |  |  |
Total Loans | [2] |  |
[1] | Loans subject to normal monitoring involve borrowers of acceptable-to-strong credit quality and risk, who have the apparent ability to satisfy their loan obligation.
[2] | Loans subject to special monitoring possess some credit deficiency or potential weakness which requires a high level of management attention.

X
- Definition An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money within one year from the balance sheet date (or the normal operating cycle, whichever is longer), net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4531-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 + Details
Name: | us-gaap_NotesAndLoansReceivableNetCurrent
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cass_CommercialAndIndustrialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cass_RealEstateChurchRelatedMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cass_RealEstateChurchRelatedConstructionLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cass_IndustrialRevenueBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cass_OtherFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |