XML 86 R108.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Note 18 - Employee Benefit Plans (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Minimum Number of Years Allowed To Participate in Employee Stock Ownership Plan | 2 years |  |
Minimum Number of Hours Allowed to Participate in Employee Stock Ownership Plan for Part Time Employees | 1000 hours |  |
Stock Issued During Period, Shares, Employee Stock Ownership Plan (in Shares) | 11,887 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan | 3,825 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan | 2,814 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan
Stock Issued During Period, Value, Employee Stock Ownership Plan | $ 301,902 us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan | $ 92,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan | $ 47,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan
Employee Stock Ownership Plan (ESOP), Shares Contributed to ESOP (in Shares) | 73,439 us-gaap_EmployeeStockOwnershipPlanESOPSharesContributedToESOP | 51,779 us-gaap_EmployeeStockOwnershipPlanESOPSharesContributedToESOP | 116,124 us-gaap_EmployeeStockOwnershipPlanESOPSharesContributedToESOP
Employee Stock Ownership Plan (ESOP), Shares in ESOP (in Shares) | 1,079,236 us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP |  |
Percentage of Outstanding Common Stock Under Employee Stock Ownership Plan | 1.40%caty_PercentageOfOutstandingCommonStockUnderEmployeeStockOwnershipPlan |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 75.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent |  |
Defined Contribution Plan, Employer Discretionary Contribution Amount | 1,400,000 us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount | 1,000,000 us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount | 1,000,000 us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Percentage of Participant Borrowing Capacity of Vested Amount | 50.00%caty_PercentageOfParticipantBorrowingCapacityOfVestedAmount |  |
Maximum [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Employee Stock Ownership Plan (ESOP), Debt Structure, Direct Loan, Employer Cash Payments Used for Debt Service | 50,000 us-gaap_EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanEmployerCashPaymentsUsedForDebtService / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Minimum [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Employee Stock Ownership Plan (ESOP), Debt Structure, Direct Loan, Employer Cash Payments Used for Debt Service | $ 1,000 us-gaap_EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanEmployerCashPaymentsUsedForDebtService / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Less Than Two Years of Service [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 0.00%us-gaap_DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = caty_LessThanTwoYearsOfServiceMember |  |
Yearly After Two Years of Service [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 25.00%us-gaap_DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = caty_YearlyAfterTwoYearsOfServiceMember |  |
First Two and Half Percent of Eligible Compensation [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 100.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = caty_FirstTwoAndHalfPercentOfEligibleCompensationMember |  |
Matched at 100 Percent [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 4.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = caty_MatchedAt100PercentMember |  |

X
- Definition Minimum number of hours allowed to participate in employee stock ownership plan for part time employees. + References No definition available. + Details
Name: | caty_MinimumNumberOfHoursAllowedToParticipateInEmployeeStockOwnershipPlanForPartTimeEmployees
Namespace Prefix: | caty_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum number of years allowed to participate in employee stock ownership plan. + References No definition available. + Details
Name: | caty_MinimumNumberOfYearsAllowedToParticipateInEmployeeStockOwnershipPlan
Namespace Prefix: | caty_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | caty_Note18EmployeeBenefitPlansDetailsLineItems
Namespace Prefix: | caty_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of outstanding common stock under employee stock ownership plan. + References No definition available. + Details
Name: | caty_PercentageOfOutstandingCommonStockUnderEmployeeStockOwnershipPlan
Namespace Prefix: | caty_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of participant borrowing capacity of vested amount. + References No definition available. + Details
Name: | caty_PercentageOfParticipantBorrowingCapacityOfVestedAmount
Namespace Prefix: | caty_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of employer's matching contributions to a defined contribution plan that vests in a given year. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of cash provided by the employer through contributions or dividends that the ESOP used in the period to repay debt and interest on a third-party loan made directly to the ESOP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6418455&loc=d3e16545-113920 + Details
Name: | us-gaap_EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanEmployerCashPaymentsUsedForDebtService
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This item represents the number of shares provided to the Employee Stock Ownership Plan (ESOP) during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 + Details
Name: | us-gaap_EmployeeStockOwnershipPlanESOPSharesContributedToESOP
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 + Details
Name: | us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6418455&loc=d3e16649-113920 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate value of stock issued during the period as a result of employee stock ownership plan (ESOP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6418455&loc=d3e16649-113920 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=caty_FirstTwoAndHalfPercentOfEligibleCompensationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=caty_LessThanTwoYearsOfServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=caty_MatchedAt100PercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=caty_YearlyAfterTwoYearsOfServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |