XML 78 R67.htm IDEA: XBRL DOCUMENT v3.24.3

Loans and Leases - Loan Modification or Refinancing (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 158,528	$ 5,556
Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			191,192	$ 17,931
Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	99,415	5,509
Extended Maturity | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			104,374	17,882
Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	45,957	41
Payment Deferral | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			60,117	41
Combination - Term Extension and Principal Forgiveness | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			13,500
Combination Term Extension and Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	13,156
Combination Term Extension and Payment Delay | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			13,201
Term Extension and Interest Rate Reduction | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance				$ 8
Combination Term Extension and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance		6
Real Estate Mortgage | Other Residential Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 1,528	$ 4,001
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.10%	0.10%	0.10%	0.10%
Real Estate Mortgage | Other Residential Real Estate | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 5,092	$ 15,311
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.20%	0.30%	0.20%	0.30%
Real Estate Mortgage | Other Residential Real Estate | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification		8 months
Real Estate Mortgage | Other Residential Real Estate | Extended Maturity | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification				10 months
Real Estate Mortgage | Other Residential Real Estate | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 1,528	$ 4,001
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.10%	0.10%	0.10%	0.10%
Financing Receivable, Modified, Weighted Average Term Increase from Modification	8 months
Real Estate Mortgage | Other Residential Real Estate | Extended Maturity | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 5,092	$ 15,311
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.20%	0.30%	0.20%	0.30%
Real Estate Mortgage | Other Residential Real Estate | Extended Maturity | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification			10 months
Real Estate Mortgage | Other Residential Real Estate | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Real Estate Mortgage | Other Residential Real Estate | Payment Deferral | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 0	$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%	0.00%	0.00%	0.00%
Real Estate Mortgage | Other Residential Real Estate | Combination - Term Extension and Principal Forgiveness | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Real Estate Mortgage | Other Residential Real Estate | Combination Term Extension and Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Real Estate Mortgage | Other Residential Real Estate | Combination Term Extension and Payment Delay | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Real Estate Mortgage | Other Residential Real Estate | Term Extension and Interest Rate Reduction | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance				$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class		0.00%		0.00%
Real Estate Mortgage | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 139,508
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	3.10%		3.10%
Real Estate Mortgage | Commercial | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 168,307
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	3.70%		3.70%
Real Estate Mortgage | Commercial | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 93,551
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	2.10%		2.10%
Financing Receivable, Modified, Weighted Average Term Increase from Modification	15 months
Real Estate Mortgage | Commercial | Extended Maturity | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 94,690
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	2.10%		2.10%
Real Estate Mortgage | Commercial | Extended Maturity | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification			15 months
Real Estate Mortgage | Commercial | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Payment Delay	24 months
Real Estate Mortgage | Commercial | Payment Delay | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Payment Delay			20 months
Real Estate Mortgage | Commercial | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 45,957
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	1.00%		1.00%
Real Estate Mortgage | Commercial | Payment Deferral | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 60,117
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	1.30%		1.30%
Real Estate Mortgage | Commercial | Combination - Term Extension and Principal Forgiveness | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 13,500
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.30%		0.30%
Real Estate Mortgage | Commercial | Combination - Term Extension and Principal Forgiveness | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification			3 years
Financing Receivable, Modified, Increase (Decrease) from Modification			$ (4,000)
Real Estate Mortgage | Commercial | Combination Term Extension and Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Real Estate Mortgage | Commercial | Combination Term Extension and Payment Delay | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Commercial | Asset Based [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 2,195		$ 2,195
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.10%		0.10%
Commercial | Venture Capital Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 13,156		$ 13,156
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	1.00%		1.00%
Commercial | Other Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 2,141	$ 1,555
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.10%	0.20%	0.10%	0.20%
Commercial | Other Commercial | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 2,431	$ 2,603
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.10%	0.30%	0.10%	0.30%
Commercial | Other Commercial | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification		17 months
Commercial | Other Commercial | Extended Maturity | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification				22 months
Commercial | Other Commercial | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Payment Delay			18 months
Commercial | Other Commercial | Extended Maturity and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification				7.50%
Financing Receivable, Pre-Modification Interest Rate		11.75%
Commercial | Other Commercial | Extended Maturity and Interest Rate Reduction | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification				3 years
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification				7.50%
Financing Receivable, Pre-Modification Interest Rate				11.75%
Commercial | Extended Maturity | Asset Based [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 2,195		$ 2,195
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.10%		0.10%
Commercial | Extended Maturity | Venture Capital Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 0		$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Commercial | Extended Maturity | Other Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 2,141	$ 1,508
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.10%	0.20%	0.10%	0.20%
Financing Receivable, Modified, Weighted Average Term Increase from Modification	14 months
Commercial | Extended Maturity | Other Commercial | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 2,386	$ 2,556
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.10%	0.30%	0.10%	0.30%
Commercial | Extended Maturity | Other Commercial | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification			15 months
Commercial | Payment Delay | Venture Capital Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Payment Delay	3 months
Commercial | Payment Delay | Venture Capital Loans | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Payment Delay			3 months
Commercial | Payment Delay | Other Commercial | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Payment Delay			18 months
Commercial | Payment Deferral | Asset Based [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Commercial | Payment Deferral | Venture Capital Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Commercial | Payment Deferral | Other Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Commercial | Payment Deferral | Other Commercial | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 0	$ 41
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%	0.00%	0.00%	0.00%
Commercial | Combination - Term Extension and Principal Forgiveness | Other Commercial | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Commercial | Combination Term Extension and Payment Delay | Venture Capital Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 13,156		$ 13,156
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	1.00%		1.00%
Financing Receivable, Modified, Weighted Average Term Increase from Modification	3 months
Commercial | Combination Term Extension and Payment Delay | Venture Capital Loans | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification			3 months
Commercial | Combination Term Extension and Payment Delay | Other Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance	$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Commercial | Combination Term Extension and Payment Delay | Other Commercial | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 45
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Commercial | Combination Term Extension and Payment Delay | Other Commercial | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification			10 years
Financing Receivable, Modified, Payment Delay			4 months
Commercial | Term Extension and Interest Rate Reduction | Other Commercial | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance				$ 6
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class		0.00%		0.00%
Commercial | Combination Term Extension and Interest Rate Reduction | Other Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance		$ 6
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class		0.00%		0.00%
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance
Consumer | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 11	$ 17
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%	0.00%	0.00%	0.00%
Consumer | Extended Maturity | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 11	$ 15
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%	0.00%	0.00%	0.00%
Consumer | Extended Maturity | Nine Months-Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification			12 months	12 months
Consumer | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance		$ 41
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class		0.00%		0.00%
Consumer | Payment Deferral | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 0	$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%	0.00%	0.00%	0.00%
Consumer | Combination - Term Extension and Principal Forgiveness | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Consumer | Combination Term Extension and Payment Delay | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance			$ 0
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class	0.00%		0.00%
Consumer | Term Extension and Interest Rate Reduction | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance				$ 2
Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class		0.00%		0.00%
Consumer | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Contractual Interest Rate, Pre-modification		300.00%
Consumer | Combination Term Extension and Interest Rate Reduction | Six Months Ended
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification				2 years
Financing Receivable, Modified, Contractual Interest Rate, Pre-modification				9.50%
Financing Receivable, Modified, Contractual Interest Rate, Post-modification				2.00%

X

- Definition

Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance

+ References

No definition available.

+ Details

Name:	pacw_FinanceReceivableLoanRestructuringAndRefinancingAmortizedBalance
Namespace Prefix:	pacw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class

+ References

No definition available.

+ Details

Name:	pacw_FinanceReceivableLoanRestructuringAndRefinancingPercentOfAmortizedLoanPortfolioClass
Namespace Prefix:	pacw_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Financing Receivable, Modified, Contractual Interest Rate, Post-modification

+ References

No definition available.

+ Details

Name:	pacw_FinancingReceivableModifiedContractualInterestRatePostModification
Namespace Prefix:	pacw_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Financing Receivable, Modified, Contractual Interest Rate, Pre-modification

+ References

No definition available.

+ Details

Name:	pacw_FinancingReceivableModifiedContractualInterestRatePreModification
Namespace Prefix:	pacw_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Financing Receivable, Modified, Payment Delay

+ References

No definition available.

+ Details

Name:	pacw_FinancingReceivableModifiedPaymentDelay
Namespace Prefix:	pacw_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Financing Receivable, Pre-Modification Interest Rate

+ References

No definition available.

+ Details

Name:	pacw_FinancingReceivablePreModificationInterestRate
Namespace Prefix:	pacw_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-34

+ Details

Name:	us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

+ Details

Name:	us-gaap_FinancingReceivableModifiedWeightedAverageInterestRateDecreaseFromModification
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

+ Details

Name:	us-gaap_FinancingReceivableModifiedWeightedAverageTermIncreaseFromModification
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of increase (decrease) in amortized cost of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

+ Details

Name:	us-gaap_FinancingReceivableTroubledDebtRestructuringIncreaseDecreaseFromModification
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	pacw_TimePeriodAxis=pacw_SixMonthsEndedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_LoanRestructuringAndRefinancingConcessionTypeAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_LoanRestructuringAndRefinancingConcessionTypeAxis=us-gaap_PaymentDeferralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_LoanRestructuringAndRefinancingConcessionTypeAxis=pacw_CombinationTermExtensionAndPrincipalForgivenessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_LoanRestructuringAndRefinancingConcessionTypeAxis=pacw_CombinationTermExtensionAndPaymentDelayMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_LoanRestructuringAndRefinancingConcessionTypeAxis=pacw_TermExtensionAndInterestRateReductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_LoanRestructuringAndRefinancingConcessionTypeAxis=pacw_CombinationTermExtensionAndInterestRateReductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_MortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateLoanTypeAxis=pacw_OtherResidentialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_TimePeriodAxis=pacw_NineMonthsEndedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateLoanTypeAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_LoanRestructuringAndRefinancingConcessionTypeAxis=pacw_PaymentDelayMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_CommercialCollateralizedFinancingReceivableLoanTypeAxis=pacw_AssetBasedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_CommercialCollateralizedFinancingReceivableLoanTypeAxis=pacw_VentureCapitalLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pacw_CommercialCollateralizedFinancingReceivableLoanTypeAxis=pacw_OtherCommercialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=pacw_PaymentDelayMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityAndInterestRateReductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: