Common Equity Tier One Capital Required To Be Well Capitalized To Risk Weighted Assets

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- Definition

Depositary Shares Issued

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- Definition

Depository shares liquidation preference.

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- Definition

The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

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- 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.

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No definition available.

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- Definition

Describes the declaration as being a special dividend (over and above the normal dividend); as the annual, semi-annual, quarterly dividend, or other normal periodic dividend; or as some other type of dividend.

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- Definition

Description of basis of dividend, such as adjustable rate. Excludes percentage rate dividend payments or fixed dollar amounts per share.

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

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No definition available.

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- Definition

The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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- Definition

Amount of stock repurchase plan authorized.

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No definition available.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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No definition available.

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- Definition

The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action.

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- Definition

The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

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- Definition

The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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Capital - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended
	Mar. 17, 2017	Dec. 31, 2019	Dec. 31, 2018	Oct. 23, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum leverage capital ratio to be categorized as well capitalized		5.00%
Minimum Tier 1 risk based capital ratio to be categorized as well capitalized		8.00%
Minimum total risk based capital ratio to be categorized as well capitalized		10.00%
Minimum Common equity Tier 1 risk-based capital ratio		6.50%
Preferred stock par value		$ 0.01	$ 0.01
Treasury Stock, Value		$ 220,717	$ 161,998
Depositary Shares [Member] \| Series A Noncumulative Preferred Stock [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Depositary shares issued	20,600,000
Preferred stock par value	$ 0.01
Preferred stock, liquidation preference per share	1,000
Depository shares, liquidation preference per share	$ 25
Fixed dividend rate per annum	6.375%
Floating dividend rate per annum	Three-month LIBOR plus 382.1 basis
Dividends payable description	Dividends will be payable in arrears on March 17, June 17, September 17, and December 17 of each year, which commenced on June 17, 2017.
Common Stock [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Stock Repurchase Program, Authorized Amount				$ 300,000
Treasury Stock, Value		$ 7,100	$ 16,800
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		67,100,000	160,800,000