$CASS
CASS INFORMATION SYSTEMS INC Stock $cass

$cass Overview Financials Valuation SEC Filings Company Website

2013 Q4 Form 10-K Financial Statement

#000120677415000808 Filed on March 09, 2015

Income Statement

Concept	2013 Q4	2013 Q3	2013 Q2
Revenue	$10.02M	$29.06M	$29.20M
YoY Change	-12.29%	4.1%	2.78%
Cost Of Revenue	$730.0K	$720.0K	$690.0K
YoY Change	-5.19%	-8.86%	-9.21%
Gross Profit	$28.13M	$29.06M	$29.50M
YoY Change	-0.85%	4.12%	1.69%
Gross Profit Margin	280.85%	100.02%	101.04%
Selling, General & Admin	$18.50M	$18.20M	$17.94M
YoY Change	8.57%	5.2%	5.9%
% of Gross Profit	65.77%	62.63%	60.81%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.180M	$1.890M	$1.450M
YoY Change	10.1%	3.28%	-8.81%
% of Gross Profit	7.75%	6.5%	4.92%
Operating Expenses	$21.30M	$21.39M	$21.32M
YoY Change	-0.56%	7.38%	2.3%
Operating Profit	$6.830M	$7.670M	$8.180M
YoY Change	-1.73%	-4.01%	0.12%
Interest Expense	$729.0K	$722.0K	$694.0K
YoY Change	-4.71%	-8.03%	-8.68%
% of Operating Profit	10.67%	9.41%	8.48%
Other Income/Expense, Net
YoY Change
Pretax Income	$6.840M	$7.671M	$8.179M
YoY Change	-1.58%	-3.9%	0.15%
Income Tax	$1.582M	$1.533M	$2.106M
% Of Pretax Income	23.13%	19.98%	25.75%
Net Earnings	$5.254M	$6.138M	$6.073M
YoY Change	-1.63%	0.76%	1.86%
Net Earnings / Revenue	52.46%	21.13%	20.8%
Basic Earnings Per Share	$0.45	$0.54	$0.53
Diluted Earnings Per Share	$0.45	$0.53	$0.52
COMMON SHARES
Basic Shares Outstanding	11.51M shares	11.45M shares	11.43M shares
Diluted Shares Outstanding		11.67M shares	11.62M shares

Balance Sheet

Concept	2013 Q4	2013 Q3	2013 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$171.6M	$170.8M	$11.70M
YoY Change	812.77%	1660.82%	0.86%
Cash & Equivalents	$225.3M	$240.3M	$269.9M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$171.6M	$170.8M	$11.70M
YoY Change	812.77%	1660.82%	0.86%
LONG-TERM ASSETS
Property, Plant & Equipment	$13.23M	$12.65M	$12.22M
YoY Change	23.25%	36.06%	30.04%
Goodwill	$11.59M	$11.59M	$11.59M
YoY Change	0.0%	0.0%	0.0%
Intangibles	$3.222M	$3.342M	$3.463M
YoY Change	-14.24%
Long-Term Investments	$371.4M	$378.3M
YoY Change
Other Assets
YoY Change
Total Long-Term Assets	$1.154B	$1.159B	$1.337B
YoY Change	-9.0%	-16.14%	4.47%
TOTAL ASSETS
Total Short-Term Assets	$171.6M	$170.8M	$11.70M
Total Long-Term Assets	$1.154B	$1.159B	$1.337B
Total Assets	$1.326B	$1.329B	$1.349B
YoY Change	3.0%	-4.45%	4.44%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$544.0M	$564.7M	$606.1M
YoY Change	4.06%	-12.98%	2.24%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$582.5M	$413.6M	$405.1M
YoY Change	38.82%	1.45%	7.03%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.127B	$1.126B	$1.147B
YoY Change	3.68%	-5.99%	3.91%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$9.100M	$25.10M	$26.80M
YoY Change	-66.17%	29.38%	41.8%
Total Long-Term Liabilities	$9.100M	$25.10M	$26.80M
YoY Change	-66.17%	29.38%	41.8%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.127B	$1.126B	$1.147B
Total Long-Term Liabilities	$9.100M	$25.10M	$26.80M
Total Liabilities	$1.136B	$1.151B	$1.174B
YoY Change	2.0%	-5.43%	4.55%
SHAREHOLDERS EQUITY
Retained Earnings	$75.94M	$72.99M	$68.92M
YoY Change	24.59%
Common Stock	$131.0M	$130.8M	$130.9M
YoY Change	-0.02%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$10.98M	$11.06M	$11.24M
YoY Change	-7.7%
Treasury Stock Shares	409.7K shares	417.3K shares	435.1K shares
Shareholders Equity	$190.4M	$178.7M	$174.7M
YoY Change
Total Liabilities & Shareholders Equity	$1.326B	$1.329B	$1.349B
YoY Change	3.0%	-4.45%	4.43%

Cashflow Statement

Concept	2013 Q4	2013 Q3	2013 Q2
OPERATING ACTIVITIES
Net Income	$5.254M	$6.138M	$6.073M
YoY Change	-1.63%	0.76%	1.86%
Depreciation, Depletion And Amortization	$2.180M	$1.890M	$1.450M
YoY Change	10.1%	3.28%	-8.81%
Cash From Operating Activities	$7.000M	$7.330M	$10.15M
YoY Change	-32.24%	-11.58%	47.1%
INVESTING ACTIVITIES
Capital Expenditures	-$1.460M	-$1.120M	-$570.0K
YoY Change	-23.16%	160.47%	-5.0%
Acquisitions
YoY Change
Other Investing Activities	-$18.96M	-$11.67M	$27.93M
YoY Change	-173.12%	-67.72%	-239.93%
Cash From Investing Activities	-$20.42M	-$12.78M	$27.36M
YoY Change	-184.98%	-65.06%	-233.01%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-1.620M	-24.09M	65.97M
YoY Change	-98.57%	-126.35%	488.49%
NET CHANGE
Cash From Operating Activities	7.000M	7.330M	10.15M
Cash From Investing Activities	-20.42M	-12.78M	27.36M
Cash From Financing Activities	-1.620M	-24.09M	65.97M
Net Change In Cash	-15.04M	-29.54M	103.5M
YoY Change	-80.9%	-146.78%	-4306.5%
FREE CASH FLOW
Cash From Operating Activities	$7.000M	$7.330M	$10.15M
Capital Expenditures	-$1.460M	-$1.120M	-$570.0K
Free Cash Flow	$8.460M	$8.450M	$10.72M
YoY Change	-30.83%	-3.1%	42.93%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2014Q2	dei	Entity Public Float EntityPublicFloat	540000000	USD
CY2014Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	11307000	USD
CY2013Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	11283000	USD
CY2014Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	200966000	USD
CY2013Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	160316000	USD
CY2014Q4	cass	Federal Funds Sold And Other Short Term Investments FederalFundsSoldAndOtherShortTermInvestments	82062000	USD
CY2013Q4	cass	Federal Funds Sold And Other Short Term Investments FederalFundsSoldAndOtherShortTermInvestments	53663000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	294335000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	225262000	USD
CY2014Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	356141000	USD
CY2013Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	317767000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	669346000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	652177000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	11894000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	11679000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	657452000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	640498000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	16909000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	13231000	USD
CY2014Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	15429000	USD
CY2013Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	15437000	USD
CY2014Q4	cass	Payments In Excess Of Funding PaymentsInExcessOfFunding	120227000	USD
CY2013Q4	cass	Payments In Excess Of Funding PaymentsInExcessOfFunding	77650000	USD
CY2014Q4	us-gaap	Goodwill Goodwill	11590000	USD
CY2013Q4	us-gaap	Goodwill Goodwill	11590000	USD
CY2014Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2762000	USD
CY2013Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3222000	USD
CY2014Q4	us-gaap	Other Assets OtherAssets	25886000	USD
CY2013Q4	us-gaap	Other Assets OtherAssets	21363000	USD
CY2014Q4	us-gaap	Assets Assets	1500731000	USD
CY2015Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	11488014	shares
CY2014	cass	Information Services Payment And Processing Revenue InformationServicesPaymentAndProcessingRevenue	77427000	USD
CY2014	us-gaap	Fees And Commissions FeesAndCommissions	1132000	USD
CY2013	us-gaap	Fees And Commissions FeesAndCommissions	1215000	USD
CY2012	us-gaap	Fees And Commissions FeesAndCommissions	1272000	USD
CY2014	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	23000	USD
CY2013	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	4024000	USD
CY2014	us-gaap	Noninterest Income Other NoninterestIncomeOther	1325000	USD
CY2013	us-gaap	Noninterest Income Other NoninterestIncomeOther	528000	USD
CY2012	us-gaap	Noninterest Income Other NoninterestIncomeOther	536000	USD
CY2014	us-gaap	Noninterest Income NoninterestIncome	79907000	USD
CY2013	us-gaap	Noninterest Income NoninterestIncome	76572000	USD
CY2012	us-gaap	Noninterest Income NoninterestIncome	71138000	USD
CY2013	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	32110000	USD
CY2012	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	35525000	USD
CY2012	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	60000	USD
CY2013Q4	us-gaap	Assets Assets	1326020000	USD
CY2013Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	438655000	USD
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	11931147	shares
CY2014Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	158999000	USD
CY2013Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	143841000	USD
CY2014Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	459200000	USD
CY2014Q4	us-gaap	Deposits Deposits	618199000	USD
CY2013Q4	us-gaap	Deposits Deposits	582496000	USD
CY2014Q4	us-gaap	Accounts Payable And Accrued Liabilities Noncurrent AccountsPayableAndAccruedLiabilitiesNoncurrent	655428000	USD
CY2013Q4	us-gaap	Accounts Payable And Accrued Liabilities Noncurrent AccountsPayableAndAccruedLiabilitiesNoncurrent	543953000	USD
CY2014Q4	us-gaap	Other Liabilities OtherLiabilities	26672000	USD
CY2013Q4	us-gaap	Other Liabilities OtherLiabilities	9144000	USD
CY2014Q4	us-gaap	Liabilities Liabilities	1300299000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	1135593000	USD
CY2014Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2014Q4	us-gaap	Common Stock Value CommonStockValue	5966000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	5966000	USD
CY2014Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	126169000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	125062000	USD
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	90635000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	75939000	USD
CY2014Q4	us-gaap	Treasury Stock Value TreasuryStockValue	12707000	USD
CY2013Q4	us-gaap	Treasury Stock Value TreasuryStockValue	10980000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-9631000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5560000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	200432000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	190427000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1500731000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1326020000	USD
CY2014Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.50
CY2014Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	2000000	shares
CY2014Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.50
CY2014Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	40000000	shares
CY2014Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	11931147	shares
CY2014Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	428572	shares
CY2013Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	409667	shares
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	40000000	shares
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.50
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2014Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	2000000	shares
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.50
CY2013	cass	Information Services Payment And Processing Revenue InformationServicesPaymentAndProcessingRevenue	70805000	USD
CY2012	cass	Information Services Payment And Processing Revenue InformationServicesPaymentAndProcessingRevenue	66695000	USD
CY2012	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	2635000	USD
CY2014	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	29726000	USD
CY2014	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	29000	USD
CY2013	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	48000	USD
CY2014	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	9412000	USD
CY2013	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	8867000	USD
CY2012	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	9878000	USD
CY2014	cass	Interest On Federal Funds Sold And Other Short Term Investments InterestOnFederalFundsSoldAndOtherShortTermInvestments	592000	USD
CY2013	cass	Interest On Federal Funds Sold And Other Short Term Investments InterestOnFederalFundsSoldAndOtherShortTermInvestments	552000	USD
CY2012	cass	Interest On Federal Funds Sold And Other Short Term Investments InterestOnFederalFundsSoldAndOtherShortTermInvestments	470000	USD
CY2014	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	39759000	USD
CY2014	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2460000	USD
CY2013	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2832000	USD
CY2012	us-gaap	Interest Expense Deposits InterestExpenseDeposits	3148000	USD
CY2013	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	41577000	USD
CY2012	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	45933000	USD
CY2014	us-gaap	Interest Expense InterestExpense	2460000	USD
CY2013	us-gaap	Interest Expense InterestExpense	2832000	USD
CY2012	us-gaap	Interest Expense InterestExpense	3148000	USD
CY2014	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	37299000	USD
CY2013	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	38745000	USD
CY2012	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	42785000	USD
CY2014	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed		USD
CY2013	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	500000	USD
CY2012	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2400000	USD
CY2014	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	37299000	USD
CY2013	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	38245000	USD
CY2012	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	40385000	USD
CY2014	us-gaap	Revenues Revenues	117206000	USD
CY2013	us-gaap	Revenues Revenues	114817000	USD
CY2012	us-gaap	Revenues Revenues	111523000	USD
CY2014	us-gaap	Labor And Related Expense LaborAndRelatedExpense	66100000	USD
CY2013	us-gaap	Labor And Related Expense LaborAndRelatedExpense	65722000	USD
CY2012	us-gaap	Labor And Related Expense LaborAndRelatedExpense	62563000	USD
CY2014	us-gaap	Occupancy Net OccupancyNet	3172000	USD
CY2013	us-gaap	Occupancy Net OccupancyNet	2874000	USD
CY2012	us-gaap	Occupancy Net OccupancyNet	2157000	USD
CY2014	us-gaap	Equipment Expense EquipmentExpense	4130000	USD
CY2013	us-gaap	Equipment Expense EquipmentExpense	3810000	USD
CY2012	us-gaap	Equipment Expense EquipmentExpense	3516000	USD
CY2014	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	483000	USD
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	535000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	581000	USD
CY2014	us-gaap	Other Noninterest Expense OtherNoninterestExpense	11529000	USD
CY2013	us-gaap	Other Noninterest Expense OtherNoninterestExpense	11145000	USD
CY2012	us-gaap	Other Noninterest Expense OtherNoninterestExpense	11516000	USD
CY2014	us-gaap	Noninterest Expense NoninterestExpense	85414000	USD
CY2013	us-gaap	Noninterest Expense NoninterestExpense	84086000	USD
CY2012	us-gaap	Noninterest Expense NoninterestExpense	80333000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	31792000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	30731000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	31190000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7759000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7234000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7887000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	24033000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	23497000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	23303000	USD
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.09
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.05
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.05
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.06
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.02
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.02
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	8333000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-10748000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	2702000	USD
CY2014	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses		USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	3096000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-3993000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	946000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	23000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	4024000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	2635000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	8000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1408000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	923000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	14621000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-15674000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	5206000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	5432000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-5823000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	1822000	USD
CY2014	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-104000	USD
CY2013	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	53000	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax		USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	19962000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	24030000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	19963000	USD
CY2014	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	8181000	USD
CY2013	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	7346000	USD
CY2012	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	6916000	USD
CY2014Q4	us-gaap	Minority Interest Ownership Percentage By Parent MinorityInterestOwnershipPercentageByParent	0.20	pure
CY2014Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue		USD
CY2014Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue		USD
CY2014Q4	us-gaap	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue		USD
CY2014Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	488000	USD
CY2014Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	669346000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment1 To29 Days Past Due FinancingReceivableRecordedInvestment1To29DaysPastDue	649946000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	434000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue		USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue		USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	1797000	USD
CY2013Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	652177000	USD
CY2014	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	79000	USD
CY2014	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	294000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	1500000	shares
CY2012	cass	Outside Service Fees OutsideServiceFees	2729000	USD
CY2014	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	2008000	USD
CY2013	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	2066000	USD
CY2012	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	2052000	USD
CY2014	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	2049000	USD
CY2013	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	2024000	USD
CY2012	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	2345000	USD
CY2014	us-gaap	Professional Fees ProfessionalFees	1566000	USD
CY2013	us-gaap	Professional Fees ProfessionalFees	1340000	USD
CY2012	us-gaap	Professional Fees ProfessionalFees	2183000	USD
CY2014	cass	Outside Service Fees OutsideServiceFees	2876000	USD
CY2013	cass	Outside Service Fees OutsideServiceFees	3046000	USD
CY2014	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	338000	USD
CY2013	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	367000	USD
CY2012	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	373000	USD
CY2014	us-gaap	Communication Communication	1045000	USD
CY2013	us-gaap	Communication Communication	955000	USD
CY2012	us-gaap	Communication Communication	754000	USD
CY2014	us-gaap	Other Expenses OtherExpenses	1647000	USD
CY2013	us-gaap	Other Expenses OtherExpenses	1347000	USD
CY2012	us-gaap	Other Expenses OtherExpenses	1080000	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1191000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	448000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	718000	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-585000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	39000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	933000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-36000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	18000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	41000	USD
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	11127000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	10756000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	10917000	USD
CY2014	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	3896000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	3297000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	3633000	USD
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	751000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	303000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	493000	USD
CY2014	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-223000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-528000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	819000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	861000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1357000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	45000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	41000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	89000	USD
CY2014	cass	Increase Decrease In Accrued Interest Resulting From Settlements With Taxing Authorities And Other Prior Year Adjustments IncreaseDecreaseInAccruedInterestResultingFromSettlementsWithTaxingAuthoritiesAndOtherPriorYearAdjustments	4000	USD
CY2013	cass	Increase Decrease In Accrued Interest Resulting From Settlements With Taxing Authorities And Other Prior Year Adjustments IncreaseDecreaseInAccruedInterestResultingFromSettlementsWithTaxingAuthoritiesAndOtherPriorYearAdjustments	-48000	USD
CY2014	cass	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations Over12 Months UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitationsOver12Months	210000	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	7189000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	6729000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	6195000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	110000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	4441000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	4368000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	10887000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	5444000	USD
CY2014Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	255000	USD
CY2013Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	298000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost		USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	337000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	1392000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	1130000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	509000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	569000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	17484000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	12146000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	976000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1767000	USD
CY2014Q4	cass	Deferred Tax Liabilities Pension Costs DeferredTaxLiabilitiesPensionCosts	5636000	USD
CY2013Q4	cass	Deferred Tax Liabilities Pension Costs DeferredTaxLiabilitiesPensionCosts	6233000	USD
CY2014Q4	cass	Deferred Tax Liabilities Stock Compensation DeferredTaxLiabilitiesStockCompensation	394000	USD
CY2013Q4	cass	Deferred Tax Liabilities Stock Compensation DeferredTaxLiabilitiesStockCompensation		USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Other Finite Lived Assets DeferredTaxLiabilitiesOtherFiniteLivedAssets	1153000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Other Finite Lived Assets DeferredTaxLiabilitiesOtherFiniteLivedAssets	996000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	2086000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	407000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	353000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	13738000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	11435000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	3746000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	711000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1208000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1885000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2069000	USD
CY2014	cass	Unrecognized Tax Benefits Decreases Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesIncreasesResultingFromPriorPeriodTaxPositions	-107000	USD
CY2013	cass	Unrecognized Tax Benefits Decreases Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesIncreasesResultingFromPriorPeriodTaxPositions	-666000	USD
CY2012	cass	Unrecognized Tax Benefits Decreases Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesIncreasesResultingFromPriorPeriodTaxPositions	-140000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	267000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	374000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	419000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities		USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities		USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities		USD
CY2014	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-251000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-385000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-463000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1117000	USD
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2014Q2	us-gaap	Interest Expense InterestExpense	628000	USD
CY2014Q3	us-gaap	Interest Expense InterestExpense	604000	USD
CY2014Q4	us-gaap	Interest Expense InterestExpense	603000	USD
CY2014Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9147000	USD
CY2014Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9347000	USD
CY2014Q1	us-gaap	Noninterest Income NoninterestIncome	19575000	USD
CY2014Q2	us-gaap	Noninterest Income NoninterestIncome	19952000	USD
CY2014Q3	us-gaap	Noninterest Income NoninterestIncome	20223000	USD
CY2014Q4	us-gaap	Noninterest Income NoninterestIncome	20157000	USD
CY2014Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	9772000	USD
CY2014Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	9975000	USD
CY2014Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	9991000	USD
CY2014Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	10021000	USD
CY2014Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9387000	USD
CY2014Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9418000	USD
CY2014Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed		USD
CY2014Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed		USD
CY2014Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed		USD
CY2014Q4	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed		USD
CY2014Q1	us-gaap	Noninterest Expense NoninterestExpense	21025000	USD
CY2014Q2	us-gaap	Noninterest Expense NoninterestExpense	21306000	USD
CY2014Q3	us-gaap	Noninterest Expense NoninterestExpense	21196000	USD
CY2014Q4	us-gaap	Noninterest Expense NoninterestExpense	21887000	USD
CY2014Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1886000	USD
CY2014Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1958000	USD
CY2014Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2013000	USD
CY2014Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1902000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	5811000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	6035000	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	6401000	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	5786000	USD
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.56
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.50
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.50
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.55
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2013Q1	us-gaap	Noninterest Income NoninterestIncome	18465000	USD
CY2013Q2	us-gaap	Noninterest Income NoninterestIncome	19567000	USD
CY2013Q3	us-gaap	Noninterest Income NoninterestIncome	19695000	USD
CY2013Q4	us-gaap	Noninterest Income NoninterestIncome	18845000	USD
CY2013Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	10856000	USD
CY2013Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	10623000	USD
CY2013Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	10082000	USD
CY2013Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	10016000	USD
CY2013Q1	us-gaap	Interest Expense InterestExpense	687000	USD
CY2013Q2	us-gaap	Interest Expense InterestExpense	694000	USD
CY2013Q3	us-gaap	Interest Expense InterestExpense	722000	USD
CY2013Q4	us-gaap	Interest Expense InterestExpense	729000	USD
CY2013Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	10169000	USD
CY2013Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9929000	USD
CY2013Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9360000	USD
CY2013Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9287000	USD
CY2013Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	200000	USD
CY2013Q4	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed		USD
CY2013Q1	us-gaap	Noninterest Expense NoninterestExpense	20389000	USD
CY2013Q2	us-gaap	Noninterest Expense NoninterestExpense	21017000	USD
CY2013Q3	us-gaap	Noninterest Expense NoninterestExpense	21384000	USD
CY2013Q4	us-gaap	Noninterest Expense NoninterestExpense	21296000	USD
CY2013Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2013000	USD
CY2013Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2106000	USD
CY2013Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1533000	USD
CY2013Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1582000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	6032000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	6073000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	6138000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	5254000	USD
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.54
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.45
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.53
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.45
CY2014Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	127000	USD
CY2013Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	318000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	488000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	1797000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Accrual Of Interest LoansAndLeasesReceivableImpairedNonperformingAccrualOfInterest	0	USD
CY2014Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment		USD
CY2014	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	1262000	USD
CY2013	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	1381000	USD
CY2012	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	5451000	USD
CY2014	cass	Income Recognized On Nonaccrual Loans Under Original Terms Of Contract IncomeRecognizedOnNonaccrualLoansUnderOriginalTermsOfContract	108000	USD
CY2013	cass	Income Recognized On Nonaccrual Loans Under Original Terms Of Contract IncomeRecognizedOnNonaccrualLoansUnderOriginalTermsOfContract	180000	USD
CY2013	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1500000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	67087000	USD
CY2014	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	3003000	USD
CY2013	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	3452000	USD
CY2014	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	3037000	USD
CY2013	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	2819000	USD
CY2012	cass	Income Recognized On Nonaccrual Loans Under Original Terms Of Contract IncomeRecognizedOnNonaccrualLoansUnderOriginalTermsOfContract	381000	USD
CY2014	cass	Income Recognized On Nonaccrual Loans IncomeRecognizedOnNonaccrualLoans	77000	USD
CY2013	cass	Income Recognized On Nonaccrual Loans IncomeRecognizedOnNonaccrualLoans	131000	USD
CY2012	cass	Income Recognized On Nonaccrual Loans IncomeRecognizedOnNonaccrualLoans	141000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered		USD
CY2013Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered		USD
CY2013Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment		USD
CY2013Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Accrual Of Interest LoansAndLeasesReceivableImpairedNonperformingAccrualOfInterest	0	USD
CY2014Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	72972000	USD
CY2013Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	70627000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	61384000	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-679000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	57000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	974000	USD
CY2014	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	34000	USD
CY2013	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-964000	USD
CY2014	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	13349000	USD
CY2014	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	3831000	USD
CY2013	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-8496000	USD
CY2014	us-gaap	Defined Benefit Plan Benefits Paid DefinedBenefitPlanBenefitsPaid	-1486000	USD
CY2013	us-gaap	Defined Benefit Plan Benefits Paid DefinedBenefitPlanBenefitsPaid	-1423000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	81342000	USD
CY2013Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	63439000	USD
CY2013	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	9166000	USD
CY2014	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer		USD
CY2014Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-8370000	USD
CY2013Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	7188000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0400	pure
CY2013Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0500	pure
CY2012Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0425	pure
CY2013Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0375	pure
CY2012Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0375	pure
CY2014Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0325	pure
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	1842000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	2065000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	2305000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	2649000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	2822000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	18649000	USD
CY2014	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0500	pure
CY2013	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0425	pure
CY2012	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0475	pure
CY2014	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0375	pure
CY2013	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0375	pure
CY2012	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0400	pure
CY2014	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0675	pure
CY2013	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0725	pure
CY2012	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0725	pure
CY2014	cass	Expected Long Term Rate Return ExpectedLongTermRateReturn	0.0675	pure
CY2014	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	584000	USD
CY2013	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	591000	USD
CY2012	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	537000	USD
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	2041000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	1975000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	1399000	USD
CY2012	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	1073000	USD
CY2014	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	2282000	USD
CY2013	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	2822000	USD
CY2012	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-2158000	USD
CY2014	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-1026000	USD
CY2013	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-2323000	USD
CY2012	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	4056000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	34843000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	28886000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	35328000	USD
CY2014	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	587000	USD
CY2014	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	16954000	USD
CY2013	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-34378000	USD
CY2012	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	19165000	USD
CY2014	cass	Increase Decrease In Payments In Excess Of Funding IncreaseDecreaseInPaymentsInExcessOfFunding	42577000	USD
CY2013	cass	Increase Decrease In Payments In Excess Of Funding IncreaseDecreaseInPaymentsInExcessOfFunding	14128000	USD
CY2012	cass	Increase Decrease In Payments In Excess Of Funding IncreaseDecreaseInPaymentsInExcessOfFunding	2144000	USD
CY2013	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	95742000	USD
CY2012	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	69747000	USD
CY2014	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	18340000	USD
CY2013	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	18117000	USD
CY2012	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	11898000	USD
CY2014	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	54054000	USD
CY2013	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	104351000	USD
CY2012	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	114646000	USD
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6291000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4857000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3099000	USD
CY2014	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross		USD
CY2013	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross		USD
CY2012	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	7798000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-100949000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	24901000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-65207000	USD
CY2014	cass	Increase Decrease In Non Interest Bearing Demand Deposits IncreaseDecreaseInNonInterestBearingDemandDeposits	15158000	USD
CY2013	cass	Increase Decrease In Non Interest Bearing Demand Deposits IncreaseDecreaseInNonInterestBearingDemandDeposits	-302000	USD
CY2012	cass	Increase Decrease In Non Interest Bearing Demand Deposits IncreaseDecreaseInNonInterestBearingDemandDeposits	12187000	USD
CY2014	us-gaap	Increase Decrease In Demand Deposits IncreaseDecreaseInDemandDeposits	39766000	USD
CY2013	us-gaap	Increase Decrease In Demand Deposits IncreaseDecreaseInDemandDeposits	32645000	USD
CY2012	us-gaap	Increase Decrease In Demand Deposits IncreaseDecreaseInDemandDeposits	21683000	USD
CY2014	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-19221000	USD
CY2013	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-13555000	USD
CY2012	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-18530000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	111475000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	21192000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	-72440000	USD
CY2014	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	9337000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	8510000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	7361000	USD
CY2014	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-814000	USD
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1083000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-534000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	135179000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	30387000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-64995000	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	69073000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	84174000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-94874000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	141088000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	235962000	USD
CY2014	us-gaap	Interest Paid Net InterestPaidNet	2491000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	2855000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	3196000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	8476000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	8265000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6407000	USD
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1848000	USD
CY2012	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	82000	USD
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-574000	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock		USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock		USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	160548000	USD
CY2012	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	-7361000	USD
CY2012	us-gaap	Dividends Common Stock DividendsCommonStock	-42000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	80542000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	84500000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	144350000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	2022000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	6841000	USD
CY2014Q4	us-gaap	Goodwill Gross GoodwillGross	11817000	USD
CY2012	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	21195	shares
CY2014	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2041000	USD
CY2014	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	-1848000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4071000	USD
CY2012	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.64
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1399000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3340000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	174015000	USD
CY2013	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	-8510000	USD
CY2013	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-247000	USD
CY2013	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-836000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1975000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	533000	USD
CY2014	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	-9337000	USD
CY2014	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-632000	USD
CY2014	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-181000	USD
CY2013	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.74
CY2013	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	30407	shares
CY2014	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.81
CY2014	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	22629	shares
CY2014	us-gaap	Stock Issued During Period Shares Purchase Of Assets StockIssuedDuringPeriodSharesPurchaseOfAssets	39502	shares
CY2014Q4	us-gaap	Retained Earnings Unappropriated RetainedEarningsUnappropriated	23801000	USD
CY2014Q4	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear	12	pure
CY2013Q4	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions1 AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1	102	pure
CY2013Q4	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear	3	pure
CY2014Q4	cass	Proceeds From Purchase Of State And Political Subdivisions ProceedsFromPurchaseOfStateAndPoliticalSubdivisions	5085000	USD
CY2013Q4	cass	Proceeds From Purchase Of State And Political Subdivisions ProceedsFromPurchaseOfStateAndPoliticalSubdivisions	4450000	USD
CY2014Q4	us-gaap	Available For Sale Securities Pledged As Collateral AvailableForSaleSecuritiesPledgedAsCollateral	3750000	USD
CY2014Q4	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions1 AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1	20	pure
CY2013Q4	us-gaap	Available For Sale Securities Pledged As Collateral AvailableForSaleSecuritiesPledgedAsCollateral	3750000	USD
CY2014	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	23000	USD
CY2013	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	4295000	USD
CY2012	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	2646000	USD
CY2014	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	0	USD
CY2013	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	271000	USD
CY2012	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	11000	USD
CY2014Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	342219000	USD
CY2014Q4	cass	Available For Sale Securities Gross Unrealized Gain Accumulated In Aoci AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInAoci	-14120000	USD
CY2014Q4	cass	Available For Sale Securities Gross Unrealized Loss Accumulated In Aoci AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInAoci	-198000	USD
CY2013Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	312153000	USD
CY2013Q4	cass	Available For Sale Securities Gross Unrealized Gain Accumulated In Aoci AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInAoci	-8537000	USD
CY2013Q4	cass	Available For Sale Securities Gross Unrealized Loss Accumulated In Aoci AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInAoci	-2923000	USD
CY2014Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	8700000	USD
CY2014	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	15000	USD
CY2014Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	13833000	USD
CY2014	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	183000	USD
CY2014Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	22533000	USD
CY2014	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses	198000	USD
CY2013Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	101792000	USD
CY2014Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	227000	USD
CY2013Q4	us-gaap	Goodwill Gross GoodwillGross	11817000	USD
CY2013	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	2661000	USD
CY2013Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	3554000	USD
CY2013	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	262000	USD
CY2013Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	105346000	USD
CY2013	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses	2923000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	27929000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	28213000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	150428000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	89398000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	93000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost		USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue		USD
CY2014Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	342219000	USD
CY2014Q4	cass	Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Percentage AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosurePercentage	0.06	pure
CY2014	us-gaap	Depreciation Depreciation	2613000	USD
CY2013	us-gaap	Depreciation Depreciation	2361000	USD
CY2012	us-gaap	Depreciation Depreciation	1951000	USD
CY2014	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1405000	USD
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1222000	USD
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	547000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	39089000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	37819000	USD
CY2014Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	22180000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	24588000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	1213000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	1071000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	1050000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	861000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	624000	USD
CY2013Q4	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	583989000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	225262000	USD
CY2013Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	227000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	405000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	405000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	353000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	353000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	353000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	16768000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	2416000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	16745000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1933000	USD
CY2014	dei	Amendment Flag AmendmentFlag	false
CY2014	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2014	dei	Document Period End Date DocumentPeriodEndDate	2014-12-31
CY2014	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2014	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2014	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2014	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2014	dei	Entity Registrant Name EntityRegistrantName	CASS INFORMATION SYSTEMS INC
CY2014	dei	Entity Central Index Key EntityCentralIndexKey	0000708781
CY2014	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2014
CY2014	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2014	dei	Document Type DocumentType	10-K
CY2014	dei	Trading Symbol TradingSymbol	cass
CY2014	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	164954	shares
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	199581	shares
CY2012	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	178998	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	11643979	shares
CY2013Q4	us-gaap	Shares Outstanding SharesOutstanding	11521480	shares
CY2012	cass	Fee Revenue And Other Income Intersegment Income Expense FeeRevenueAndOtherIncomeIntersegmentIncomeExpense		USD
CY2012	cass	Income From Customers After Provision For Loan Loss IncomeFromCustomersAfterProvisionForLoanLoss	40385000	USD
CY2012	cass	Intersegment Income Expense After Provision For Loan Loss IntersegmentIncomeExpenseAfterProvisionForLoanLoss		USD
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2532000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	11590000	USD
CY2012Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	3757000	USD
CY2012Q4	us-gaap	Assets Assets	1287387000	USD
CY2014Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	2762000	USD
CY2013Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	642543000	USD
CY2013Q4	us-gaap	Interest Receivable InterestReceivable	6030000	USD
CY2013Q4	us-gaap	Accounts Receivable Fair Value Disclosure AccountsReceivableFairValueDisclosure	6030000	USD
CY2014	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	6007	shares
CY2014	cass	Share Based Compensation Arrangement By Share Based Payment Award Options And Stock Appreciation Rights Exercises In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisesInPeriod	8066	shares
CY2014	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	6524	shares
CY2014	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	39502	shares
CY2014Q4	us-gaap	Shares Outstanding SharesOutstanding	11502575	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	11479025	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	11441158	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	11378216	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	11640739	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	11557214	shares
CY2014	cass	Income From Customers After Provision For Loan Loss IncomeFromCustomersAfterProvisionForLoanLoss	37299000	USD
CY2014	cass	Intersegment Income Expense After Provision For Loan Loss IntersegmentIncomeExpenseAfterProvisionForLoanLoss		USD
CY2014	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3096000	USD
CY2014	cass	Fee Revenue And Other Income Revenue From Customers FeeRevenueAndOtherIncomeRevenueFromCustomers	79907000	USD
CY2014	cass	Fee Revenue And Other Income Intersegment Income Expense FeeRevenueAndOtherIncomeIntersegmentIncomeExpense		USD
CY2013	cass	Fee Revenue And Other Income Revenue From Customers FeeRevenueAndOtherIncomeRevenueFromCustomers	76572000	USD
CY2013	cass	Fee Revenue And Other Income Intersegment Income Expense FeeRevenueAndOtherIncomeIntersegmentIncomeExpense		USD
CY2013	cass	Income From Customers After Provision For Loan Loss IncomeFromCustomersAfterProvisionForLoanLoss	38245000	USD
CY2013	cass	Intersegment Income Expense After Provision For Loan Loss IntersegmentIncomeExpenseAfterProvisionForLoanLoss		USD
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2896000	USD
CY2013Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	3222000	USD
CY2012	cass	Fee Revenue And Other Income Revenue From Customers FeeRevenueAndOtherIncomeRevenueFromCustomers	71138000	USD
CY2014Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	72819000	USD
CY2013Q4	cass	Assets Carrying Amount AssetsCarryingAmount	1189557000	USD
CY2013Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1191602000	USD
CY2014Q4	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	618199000	USD
CY2013Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	317767000	USD
CY2014Q4	cass	Accounts And Drafts Payable AccountsAndDraftsPayable	655428000	USD
CY2014Q4	cass	Accounts And Drafts Payable Fair Value Disclosure AccountsAndDraftsPayableFairValueDisclosure	655428000	USD
CY2013Q4	cass	Accounts And Drafts Payable AccountsAndDraftsPayable	543953000	USD
CY2013Q4	cass	Accounts And Drafts Payable Fair Value Disclosure AccountsAndDraftsPayableFairValueDisclosure	543953000	USD
CY2014Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	57000	USD
CY2014Q4	us-gaap	Accrued Liabilities Fair Value Disclosure AccruedLiabilitiesFairValueDisclosure	57000	USD
CY2013Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	88000	USD
CY2013Q4	us-gaap	Accrued Liabilities Fair Value Disclosure AccruedLiabilitiesFairValueDisclosure	88000	USD
CY2014Q4	cass	Liabilities Carrying Value LiabilitiesCarryingValue	1273684000	USD
CY2014Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	1273684000	USD
CY2013Q4	cass	Liabilities Carrying Value LiabilitiesCarryingValue	1126537000	USD
CY2013Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	1128030000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	294335000	USD
CY2014Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	356141000	USD
CY2014Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	663247000	USD
CY2014Q4	us-gaap	Interest Receivable InterestReceivable	6521000	USD
CY2014Q4	us-gaap	Accounts Receivable Fair Value Disclosure AccountsReceivableFairValueDisclosure	6521000	USD
CY2014Q4	cass	Assets Carrying Amount AssetsCarryingAmount	1314449000	USD
CY2014Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1320244000	USD
CY2013Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	459000	USD
CY2013Q4	us-gaap	Time Deposits Weighted Average Interest Rate Maturities Year Four TimeDepositsWeightedAverageInterestRateMaturitiesYearFour	0.005	pure
CY2014Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	182000	USD
CY2014Q4	us-gaap	Time Deposits Weighted Average Interest Rate Maturities Year Five TimeDepositsWeightedAverageInterestRateMaturitiesYearFive	0.002	pure
CY2013Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	1165000	USD
CY2014Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	354511000	USD
CY2014Q4	us-gaap	Weighted Average Rate Domestic Deposit Demand WeightedAverageRateDomesticDepositDemand	0.0049	pure
CY2013Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	316743000	USD
CY2013Q4	us-gaap	Weighted Average Rate Domestic Deposit Demand WeightedAverageRateDomesticDepositDemand	0.0061	pure
CY2014Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	24914000	USD
CY2014Q4	us-gaap	Weighted Average Rate Domestic Deposit Savings WeightedAverageRateDomesticDepositSavings	0.0051	pure
CY2013Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	20000	USD
CY2013Q4	us-gaap	Weighted Average Rate Domestic Deposit Savings WeightedAverageRateDomesticDepositSavings	0.0066	pure
CY2014Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	6956000	USD
CY2014Q4	cass	Weighte Daverage Interest Rate Of Time Deposits Less Than100000 WeighteDaverageInterestRateOfTimeDepositsLessThan100000	0.0114	pure
CY2013Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	7777000	USD
CY2013Q4	cass	Weighte Daverage Interest Rate Of Time Deposits Less Than100000 WeighteDaverageInterestRateOfTimeDepositsLessThan100000	0.0109	pure
CY2014Q4	us-gaap	Weighted Average Interest Rate Of Time Deposits100000 Or More WeightedAverageInterestRateOfTimeDeposits100000OrMore	0.0079	pure
CY2013Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	91219000	USD
CY2013Q4	us-gaap	Weighted Average Interest Rate Of Time Deposits100000 Or More WeightedAverageInterestRateOfTimeDeposits100000OrMore	0.0081	pure
CY2014Q4	cass	Weighted Average Interest Rate Of Interest Bearing Deposits WeightedAverageInterestRateOfInterestBearingDeposits	0.0058	pure
CY2013Q4	cass	Weighted Average Interest Rate Of Interest Bearing Deposits WeightedAverageInterestRateOfInterestBearingDeposits	0.0069	pure
CY2014	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	1564000	USD
CY2013	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	1737000	USD
CY2012	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	1739000	USD
CY2014	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	87000	USD
CY2013	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	138000	USD
CY2012	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	169000	USD
CY2014	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	472000	USD
CY2013	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	600000	USD
CY2012	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	784000	USD
CY2014	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	337000	USD
CY2013	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	357000	USD
CY2012	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	456000	USD
CY2014Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	66436000	USD
CY2014Q4	us-gaap	Time Deposits Weighted Average Interest Rate Maturities Year One TimeDepositsWeightedAverageInterestRateMaturitiesYearOne	0.833	pure
CY2013Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	84088000	USD
CY2013Q4	us-gaap	Time Deposits Weighted Average Interest Rate Maturities Year One TimeDepositsWeightedAverageInterestRateMaturitiesYearOne	0.849	pure
CY2014Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	10759000	USD
CY2014Q4	us-gaap	Time Deposits Weighted Average Interest Rate Maturities Year Two TimeDepositsWeightedAverageInterestRateMaturitiesYearTwo	0.135	pure
CY2013Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	12690000	USD
CY2013Q4	us-gaap	Time Deposits Weighted Average Interest Rate Maturities Year Two TimeDepositsWeightedAverageInterestRateMaturitiesYearTwo	0.128	pure
CY2014Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	1148000	USD
CY2014Q4	us-gaap	Time Deposits Weighted Average Interest Rate Maturities Year Three TimeDepositsWeightedAverageInterestRateMaturitiesYearThree	0.014	pure
CY2013Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	594000	USD
CY2013Q4	us-gaap	Time Deposits Weighted Average Interest Rate Maturities Year Three TimeDepositsWeightedAverageInterestRateMaturitiesYearThree	0.006	pure
CY2014Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	1250000	USD
CY2014Q4	us-gaap	Time Deposits Weighted Average Interest Rate Maturities Year Four TimeDepositsWeightedAverageInterestRateMaturitiesYearFour	0.016	pure
CY2013Q4	us-gaap	Time Deposits Weighted Average Interest Rate Maturities Year Five TimeDepositsWeightedAverageInterestRateMaturitiesYearFive	0.012	pure
CY2014Q4	us-gaap	Time Deposits TimeDeposits	79775000	USD
CY2014Q4	cass	Time Deposits Weighted Average Interest Rate Aggregate TimeDepositsWeightedAverageInterestRateAggregate	1.000	pure
CY2013Q4	us-gaap	Time Deposits TimeDeposits	98996000	USD
CY2013Q4	cass	Time Deposits Weighted Average Interest Rate Aggregate TimeDepositsWeightedAverageInterestRateAggregate	1.000	pure
CY2014	us-gaap	Use Of Estimates UseOfEstimates	<div id='EdgarSAA123457890000' style="font-family : 'Times New Roman';"><p align="justify"><b><i><font style="font-family: Times New Roman;" size="2">Use of Estimates </font></i></b><font style="font-family: Times New Roman;" size="2">In preparing the consolidated financial statements, Company management is required to make estimates and assumptions which significantly affect the reported amounts in the consolidated financial statements.</font></p> </div>
CY2014Q4	us-gaap	Financing Receivable Recorded Investment1 To29 Days Past Due FinancingReceivableRecordedInvestment1To29DaysPastDue	668858000	USD
CY2014	us-gaap	Revenue Recognition Sales Of Services RevenueRecognitionSalesOfServices	<div id='EdgarSAA123457890000' style="font-family : 'Times New Roman';"><p align="justify"><b><i><font style="font-family: Times New Roman;" size="2">Information Services Revenue</font></i></b><font style="font-family: Times New Roman;" size="2"> A majority of the Company's revenues are attributable to fees for providing services. These services include transportation invoice rating, payment processing, auditing, and the generation of accounting and transportation information. The Company also processes, pays and generates management information from electric, gas, telecommunications, environmental, and other invoices. The specific payment and information processing services provided to each customer are developed individually to meet each customer's specific requirements. The Company enters into service agreements with customers typically for fixed fees per transaction that are invoiced monthly. Revenues are recognized in the period services are rendered and earned under the service agreements, as long as collection is reasonably assured.</font></p> </div>

Files In Submission

Name	View Source	Status
0001206774-15-000808-index-headers.html	Edgar Link	pending
0001206774-15-000808-index.html	Edgar Link	pending
0001206774-15-000808.txt	Edgar Link	pending
0001206774-15-000808-xbrl.zip	Edgar Link	pending
cass-20141231.xml	Edgar Link	completed
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cass-20141231_cal.xml	Edgar Link	unprocessable
cass-20141231_def.xml	Edgar Link	unprocessable
cass-20141231_lab.xml	Edgar Link	unprocessable
cass-20141231_pre.xml	Edgar Link	unprocessable
cass_10k.htm	Edgar Link	pending
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$CASS
CASS INFORMATION SYSTEMS INC Stock $cass

2013 Q4 Form 10-K Financial Statement

#000120677415000808 Filed on March 09, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CASS CASS INFORMATION SYSTEMS INC Stock $cass

2013 Q4 Form 10-K Financial Statement

#000120677415000808 Filed on March 09, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CASS
CASS INFORMATION SYSTEMS INC Stock $cass