Employee Stock Ownership Plan (ESOP) - Additional Information (Detail)	6 Months Ended
Dec. 31, 2012 Age H
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Minimum hours of service completed by employee	1,000
Period of service for ESOP benefits	12 months
Minimum age of employee to attain the plan	21
Shares to be purchased for ESOP, from borrowed funds	384,900
Shares to be purchased for ESOP, percentage of common stock	8.00%
Repayment of loan on ESOP	20 years
Percentage vested in accrued benefits under ESOP	100.00%

Expected loan repayment period.

No definition available.

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Minimum Age to be attained by employee to avail benefits under ESOP.

No definition available.

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Minimum hours of service to perform by employee to avail benefits under ESOP.

No definition available.

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Minimum Period of service to perform by employee to avail benefits under ESOP.

No definition available.

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Percentage of accrued benefits to be vested by participants.

No definition available.

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Data Type:	num:percentItemType
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Percentage of shares to be purchased for ESOP from borrowed fund.

No definition available.

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Shares to be purchased for ESOP, from borrowed fund.

No definition available.

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Period Type:	duration

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