Restricted Stock Activity (Detail) - Restricted Stock Awards	12 Months Ended
Dec. 31, 2019 $ / shares shares
Shares
Outstanding at beginning of year \| shares	436,224
Vested \| shares	(362,673)
Forfeited \| shares	(1,500)
Outstanding at end of year \| shares	72,051
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year \| $ / shares	$ 21.41
Vested \| $ / shares	21.38
Forfeited \| $ / shares	21.71
Outstanding at end of year \| $ / shares	$ 21.59

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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