Employee Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended		1 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jan. 01, 2004 First Contributions	Jan. 01, 2004 Next Contributions
Defined Benefit Plan Disclosure [Line Items]
Employer contribution plan of participant contribution			100.00%	50.00%
Participant's compensation contribution			3.00%	2.00%
Total contributions under profit sharing plan	$ 189,000	$ 183,000
Premiums of health care benefits expensed	937,000	843,000
Years prior to retirement used to determine employee benefit under defined benefit pension plan	5 years
Weighted-average discount rate used in determining projected benefit obligations for defined benefit pension plan	4.80%	5.50%
Estimated net loss for defined benefit pension plan that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year	$ 46,000