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- Definition

Debt Instrument Maturities Period

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Maximum number of quarterly periods by which the corporation has the right to defer interest payments on junior subordinated deferrable interest debentures

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No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

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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.

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- Definition

The cash inflow from issuance of preferred stocks by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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- Definition

Stated interest rate of the subordinated debt.

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No definition available.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Borrowed Funds (Narrative) (Detail) $ in Thousands		12 Months Ended
Borrowed Funds (Narrative) (Detail) $ in Thousands	Mar. 17, 2017 USD ($)	Dec. 31, 2020 USD ($) quarter	Dec. 31, 2019 USD ($)	Dec. 31, 2004 USD ($)
Borrowed Funds [Line Items]
Federal funds purchased		$ 48,900	$ 27,200
Securities sold under agreements to repurchase		2,100,000	1,700,000
Subordinated notes		99,021	98,865
Junior subordinated deferrable interest debentures		136,357	136,299
Proceeds from issuance of Common Equity Securities		$ 145,452
Maximum number of quarterly periods by which the corporation has the right to defer interest payments on junior subordinated deferrable interest debentures \| quarter		20
Trust Preferred Securities Tier Two Capital Allowable Portion [Member] \| Cullen/Frost [Member]
Borrowed Funds [Line Items]
Proceeds from Issuance of Trust Preferred Securities		$ 133,000	133,000
Trust II [Member]
Borrowed Funds [Line Items]
Maturity date				Mar. 01, 2034
Proceeds from Issuance of Trust Preferred Securities				$ 120,000
Proceeds from issuance of Common Equity Securities				$ 3,700
Floating rate 3 month Libor plus margin				1.55%
Trust II [Member] \| Trust Preferred Securities Tier Two Capital Allowable Portion [Member] \| Cullen/Frost [Member]
Borrowed Funds [Line Items]
Proceeds from Issuance of Trust Preferred Securities		120,000	120,000
WNB Capital Trust I [Member]
Borrowed Funds [Line Items]
Maturity date				Jul. 23, 2034
Proceeds from Issuance of Trust Preferred Securities				$ 13,000
Proceeds from issuance of Common Equity Securities				$ 403
Floating rate 3 month Libor plus margin				2.35%
WNB Capital Trust I [Member] \| Trust Preferred Securities Tier Two Capital Allowable Portion [Member] \| Cullen/Frost [Member]
Borrowed Funds [Line Items]
Proceeds from Issuance of Trust Preferred Securities		$ 13,000	13,000
Federal Funds Purchased [Member] \| Maximum [Member]
Borrowed Funds [Line Items]
Short term debt maturity period		90 days
Federal Funds Purchased [Member] \| Minimum [Member]
Borrowed Funds [Line Items]
Short term debt maturity period		1 day
Securities Loaned or Sold under Agreements to Repurchase [Member] \| Maximum [Member]
Borrowed Funds [Line Items]
Short term debt maturity period		90 days
Securities Loaned or Sold under Agreements to Repurchase [Member] \| Minimum [Member]
Borrowed Funds [Line Items]
Short term debt maturity period		30 days
Subordinated Debt [Member]
Borrowed Funds [Line Items]
Subordinated notes	$ 100,000
Subordinated notes interest rate	4.50%
Maturity date	Mar. 17, 2027
Unamortized debt issuance cost related to note		$ 979	1,100
Junior Subordinated Deferrable Interest Debenture [Member] \| Trust II [Member]
Borrowed Funds [Line Items]
Junior subordinated deferrable interest debentures		123,700	123,700	$ 123,700
Unamortized debt issuance cost related to note		$ 758	$ 816
Floating rate 3 month Libor plus margin		1.78%	3.46%
Junior Subordinated Deferrable Interest Debenture [Member] \| WNB Capital Trust I [Member]
Borrowed Funds [Line Items]
Junior subordinated deferrable interest debentures		$ 13,400	$ 13,400	$ 13,400
Floating rate 3 month Libor plus margin		2.56%	4.28%