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.

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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Name:	us-gaap_StockRepurchasedDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Earnings Per Share ("EPS") - Additional Information (Detail) - $ / shares	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	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	10,900	255,000	315,081	255,000
Repurchase of shares in average price	$ 21.40	$ 21.30	$ 22.27	$ 21.30
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 stock during the period, shares			297,681
Stock Yet To Be Repurchased	22,795		22,795