Summary of Stock Option Plans (Detail) - Stock Options - $ / shares shares in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015
Number of Shares
Outstanding at beginning of period	830
Granted	0
Exercised	(50)
Cancelled	0
Outstanding at end of period	780	830
Weighted Average Exercise Price
Outstanding at beginning of period	$ 13.43
Granted	0.00
Exercised	12.60
Cancelled	0.00
Outstanding at end of period	$ 13.48	$ 13.43
Weighted Average Remaining Contractual Term (Years)
Outstanding at end of period	1 year 5 months 27 days	1 year 7 months 28 days