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Earnings Per Share ("EPS") - Additional Information (Detail) - $ / shares		3 Months Ended		9 Months Ended
	Sep. 30, 2019	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Sep. 13, 2019	Jun. 12, 2019
Shares authorized to be repurchased						320,476	89,526
Percentage of current outstanding shares						9.00%	2.50%
Repurchase of stock during the period, shares		22,795	35,356	337,876	290,356
Repurchase of shares in average price		$ 19.43	$ 20.72	$ 22.08	$ 21.23
Stock Repurchase Plan [Member] | Third Repurchase Program [Member]
Repurchase of stock during the period, shares	20,200
Repurchase of shares in average price	$ 21.17
Stock Repurchase Plan [Member] | Four Repurchase Program [Member]
Repurchase of shares in average price				$ 22.12

X

- Definition

Stock repurchase program percentage of outstanding shares authorized to be repurchased.

+ References

No definition available.

+ Details

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- Definition

Stock repurchased during period average cost per share.

+ References

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X

- Definition

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

+ References

No definition available.

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X

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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