XML 29 R40.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Note 6 - Investment Securities (Details) - Temporarily Impaired Securities (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012
Securities Available-for-Sale |  |
Investment Securities - Less than 12 Months - Fair Value | $ 898,809 | $ 102,668
Investment Securities - Less than 12 Months - Unrealized Losses | 46,150 | 2,538
Investment Securities - 12 Months or longer - Fair Value | 123,203 | 254,276
Investment Securities- 12 Months or longer - Unrealized Losses | 7,344 | 11,612
Investment Securities - Fair Value | 1,022,012 | 356,944
Investment Securities - Unrealized Losses | 53,494 | 14,150
Collateralized Mortgage Backed Securities [Member] |  |
Securities Available-for-Sale |  |
Securities Available-for-Sale - Less than 12 Months - Fair Value | 882,851 | 231
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses | 45,944 | 1
Securities Available-for-Sale - 12 Months or longer - Fair Value | 154 | 170
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses | 2 | 1
Securities Available-for-Sale - Fair Value | 883,005 | 401
Securities Available-for-Sale - Unrealized Losses | 45,946 | 2
Mortgage Backed Securities Non Agency [Member] |  |
Securities Available-for-Sale |  |
Securities Available-for-Sale - Less than 12 Months - Fair Value | 94 | 0
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses | 1 | 0
Securities Available-for-Sale - 12 Months or longer - Fair Value | 0 | 96
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses | 0 | 2
Securities Available-for-Sale - Fair Value | 94 | 96
Securities Available-for-Sale - Unrealized Losses | 1 | 2
Collateralized Mortgage Obligations [Member] |  |
Securities Available-for-Sale |  |
Securities Available-for-Sale - Less than 12 Months - Fair Value | 68 | 0
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses | 1 | 0
Securities Available-for-Sale - 12 Months or longer - Fair Value | 332 | 439
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses | 59 | 35
Securities Available-for-Sale - Fair Value | 400 | 439
Securities Available-for-Sale - Unrealized Losses | 60 | 35
Corporate Debt Securities [Member] |  |
Securities Available-for-Sale |  |
Securities Available-for-Sale - Less than 12 Months - Fair Value | 9,984 | 52,468
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses | 16 | 2,532
Securities Available-for-Sale - 12 Months or longer - Fair Value | 122,717 | 253,430
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses | 7,283 | 11,570
Securities Available-for-Sale - Fair Value | 132,701 | 305,898
Securities Available-for-Sale - Unrealized Losses | 7,299 | 14,102
Mutual Funds [Member] |  |
Securities Available-for-Sale |  |
Securities Available-for-Sale - Less than 12 Months - Fair Value | 5,812 |
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses | 188 |
Securities Available-for-Sale - 12 Months or longer - Fair Value | 0 |
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses | 0 |
Securities Available-for-Sale - Fair Value | 5,812 |
Securities Available-for-Sale - Unrealized Losses | 188 |
Total [Member] |  |
Securities Available-for-Sale |  |
Securities Available-for-Sale - Less than 12 Months - Fair Value | 898,809 | 102,668
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses | 46,150 | 2,538
Securities Available-for-Sale - 12 Months or longer - Fair Value | 123,203 | 254,276
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses | 7,344 | 11,612
Securities Available-for-Sale - Fair Value | 1,022,012 | 356,944
Securities Available-for-Sale - Unrealized Losses | 53,494 | 14,150
US Treasury Securities [Member] |  |
Securities Available-for-Sale |  |
Securities Available-for-Sale - Less than 12 Months - Fair Value |  | 49,969
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses |  | 5
Securities Available-for-Sale - 12 Months or longer - Fair Value |  | 0
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses |  | 0
Securities Available-for-Sale - Fair Value |  | 49,969
Securities Available-for-Sale - Unrealized Losses |  | 5
Asset-backed Securities [Member] |  |
Securities Available-for-Sale |  |
Securities Available-for-Sale - Less than 12 Months - Fair Value |  | 0
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses |  | 0
Securities Available-for-Sale - 12 Months or longer - Fair Value |  | 141
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses |  | 4
Securities Available-for-Sale - Fair Value |  | 141
Securities Available-for-Sale - Unrealized Losses |  | $ 4

X
- Definition Investment Securities With Unrealized Losses Fair Value. + References No definition available. + Details
Name: | caty_InvestmentSecuritiesWithUnrealizedLossesFairValue
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | caty_SecuritiesAvailableForSaleAbstract00
Namespace Prefix: | caty_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total investment securities fair value less than twelve months. + References No definition available. + Details
Name: | caty_TotalInvestmentSecuritiesFairValueLessThanTwelveMonths
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total investment securities fair value twelve months or longer. + References No definition available. + Details
Name: | caty_TotalInvestmentSecuritiesFairValueTwelveMonthsOrLonger
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total investment securities unrealized losses. + References No definition available. + Details
Name: | caty_TotalInvestmentSecuritiesUnrealizedLosses
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total investment securities unrealized losses less than twelve months. + References No definition available. + Details
Name: | caty_TotalInvestmentSecuritiesUnrealizedLossesLessThanTwelveMonths
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total investment securities unrealized losses twelve months or longer. + References No definition available. + Details
Name: | caty_TotalInvestmentSecuritiesUnrealizedLossesTwelveMonthsOrLonger
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of unrealized loss on securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unrealized loss on investments in available-for-sale securities that have been in a loss position for less than twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant