Share repurchases recognized during the period that have not yet been settled by the bank.

No definition available.

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

- Definition

Number of shares repurchased but not yet settled, and included in the financial statements on trade date.

+ References

No definition available.

+ Details

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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.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Number of shares that have been repurchased and retired during the period.

+ References

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Period Type:	duration

- Definition

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

+ References

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Earnings Per Share - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Accelerated Share Repurchases [Line Items]
Stock Repurchased and Retired During Period, Shares	313,998
Stock Repurchased and Retired During Period, Value	$ 20,900,000		$ 20,881,000
Stock Purchase Initiated but not yet Settled, Shares		18,000
Share Repurchases Initiated but not yet Settled		$ 1,200,000
Share Repurchase Program [Member]
Accelerated Share Repurchases [Line Items]
Share repurchase authorized amount			125,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount			$ 100,000