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Variable Interest Entities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Proceeds from Issuance of Subordinated Long-term Debt	$ 133,000,000
Subordinated Debt | Trust Preferred Issuances
Variable Interest Entity [Line Items]
Liability Recognized	132,995,000	$ 132,995,000
Other Assets | Low Income Housing Partnerships
Variable Interest Entity [Line Items]
Maximum Loss Exposure	228,372,000	188,861,000
Liability Recognized	0	0
Other Assets | Variable Interest Entity Primary Beneficiary four
Variable Interest Entity [Line Items]
Maximum Loss Exposure	6,118	739
Liability Recognized	0	0
Loans | Commercial Troubled Debt Restructurings
Variable Interest Entity [Line Items]
Maximum Loss Exposure	110,000	145,000
Liability Recognized	$ 0	$ 0

X

- Definition

Balance sheet classification of the Variable Interest Entity's (VIE) liabilities included in the statement of financial position of the reporting entity. This element is applicable for variable interests whether the reporting entity has a controlling financial interest (primary beneficiary) or not.

+ References

No definition available.

+ Details

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Namespace Prefix:	pnfp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The cash inflow from a borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in liquidation of the entity's assets or underlying collateral.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

+ Details

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

X

- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=123419778&loc=d3e5747-111685

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI https://asc.fasb.org/extlink&oid=123419778&loc=d3e5728-111685

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

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

No definition available.

+ Details

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Balance Type:	na
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- Details

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- Details

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