Financing Receivable, Internal Risk-rating Grade

No definition available.

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Namespace Prefix:	rnst_
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Balance Type:	na
Period Type:	instant

- Definition

Loans and the allowance for loan losses.

+ References

No definition available.

+ Details

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Namespace Prefix:	rnst_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Unfunded commitment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481906/310-30-15-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481696/310-30-50-2

+ Details

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

- 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

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- 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

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Unused amount of commitments to extend credit to customers.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Loans - Narrative (Details) $ in Thousands	12 Months Ended
Loans - Narrative (Details) $ in Thousands	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Unused commitments	$ 3,115
Unfunded commitment	$ 5,641	$ 7,387
Acquisition, at fair value		$ 105,610
Special Mention
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, credit quality risk rating grade	70
Minimum \| Internal Investment Grade
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, credit quality risk rating grade	10
Minimum \| Pass
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, credit quality risk rating grade	10
Minimum \| Substandard
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, credit quality risk rating grade	80
Maximum \| Internal Investment Grade
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, credit quality risk rating grade	95
Maximum \| Pass
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, credit quality risk rating grade	60
Maximum \| Substandard
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, credit quality risk rating grade	95
Interest Rate Reduction and Payment Delay
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, modified, weighted average term increase from modification	43 months
Financing receivable, modified, weighted average interest rate decrease from modification	0.25%
Interest Rate Reduction and Term Extension
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, modified, weighted average term increase from modification	12 months
Financing receivable, modified, weighted average interest rate decrease from modification	1.15%
Term Extension and Payment Delay \| Real Estate - Commercial Mortgage
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, modified, weighted average term increase from modification	8 months
Term Extension \| Real Estate - Commercial Mortgage
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, modified, weighted average term increase from modification	10 months
Term Extension \| Real Estate - 1-4 Family Mortgage
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Financing receivable, modified, weighted average term increase from modification	117 months