This item represents the maturity term at inception for derivative instruments.

No definition available.

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- Definition

Increase Decrease in Fair Value

+ References

No definition available.

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- Definition

Net accrued on interest rate swaps.

+ References

No definition available.

+ Details

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- Details

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- Definition

Notional Amount Of Option Contract

+ References

No definition available.

+ Details

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- Definition

Sum of Spot and Forward Contract Notional Amount

+ References

No definition available.

+ Details

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

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- Definition

The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4H

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624258-113959

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- Definition

The number of derivative instruments of a particular derivative asset or group of derivative assets held by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959

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-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959

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- Definition

The average percentage points added to the reference rate to compute the variable rate on the group of interest rate derivatives.

+ References

No definition available.

+ Details

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- Definition

Average fixed interest rate related to the group of interest rate derivatives.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Average variable interest rate related to the group of interest rate derivatives.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

The number of derivative instruments of a particular derivative liability or group of derivative liabilities held by the entity.

+ References

+ Details

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16(a))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13, 16

-Article 9

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	credit
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- Definition

The fair value of the open option contracts written for the investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 320

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-12B.4,Column E)

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-Name Regulation S-X (SX)

-Number 210

-Section 12B

-Paragraph 4

-Article 12

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 12B

-Paragraph Column E

-Article 12

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- Definition

Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580

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-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 10A

-Subparagraph (d)

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-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 45

-Paragraph 1

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-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (b)

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Note 15 - Financial Derivatives (Details) (USD $)	12 Months Ended	1 Months Ended		12 Months Ended
Note 15 - Financial Derivatives (Details) (USD $)	Dec. 31, 2014	May 31, 2014	Jun. 30, 2014	Dec. 31, 2013	Oct. 31, 2014
Note 15 - Financial Derivatives (Details) [Line Items]
Junior Subordinated Notes	$ 119,136,000us-gaap_JuniorSubordinatedNotes	$ 119,100,000us-gaap_JuniorSubordinatedNotes
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(2,397,000)
Notional Amount of Option Contract	0caty_NotionalAmountOfOptionContract
Interest Expense [Member] \| Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Note 15 - Financial Derivatives (Details) [Line Items]
Net Accrued on Interest Rate Swaps	1,500,000
Interest Income [Member] \| Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member] \| Fair Value Hedging [Member]
Note 15 - Financial Derivatives (Details) [Line Items]
Net Accrued on Interest Rate Swaps	1,300,000
Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Note 15 - Financial Derivatives (Details) [Line Items]
Derivative Asset, Number of Instruments Held		5
Derivative, Notional Amount	119,100,000	119,100,000
Derivative, Original Maturity		10 years
Derivative, Average Fixed Interest Rate		2.61%
Derivative, Average Variable Interest Rate		0.24%
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(2,400,000)
Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member] \| Fair Value Hedging [Member] \| Minimum [Member]
Note 15 - Financial Derivatives (Details) [Line Items]
Derivative, Original Maturity			4 years
Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member] \| Fair Value Hedging [Member] \| Maximum [Member]
Note 15 - Financial Derivatives (Details) [Line Items]
Derivative, Original Maturity			8 years
Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member] \| Fair Value Hedging [Member]
Note 15 - Financial Derivatives (Details) [Line Items]
Derivative, Notional Amount	181,300,000		148,100,000		34,900,000
Derivative, Average Fixed Interest Rate	4.60%
Derivative, Average Variable Interest Rate	3.08%
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(489,000)
Derivative Liability, Number of Instruments Held			10		4
Derivative, Average Basis Spread on Variable Rate	2.92%
Positive Fair Value Member
Note 15 - Financial Derivatives (Details) [Line Items]
Notional Amount of Option Contract				200,000
Sum of Spot and Forward Contract Notional Amount	167,000,000			267,600,000
Increase Decrease in Fair Value	1,900,000			6,200,000
Open Option Contracts Written, at Fair Value				83
Negative Fair Value Member
Note 15 - Financial Derivatives (Details) [Line Items]
Sum of Spot and Forward Contract Notional Amount	178,900,000			236,300,000
Increase Decrease in Fair Value	(5,000,000)			(6,100,000)
Cash [Member]
Note 15 - Financial Derivatives (Details) [Line Items]
Collateral Already Posted, Aggregate Fair Value	$ 7,500,000