Leases (Lease Term, Discount Rate and Cash Flow Information ) (Detail) $ in Thousands	3 Months Ended	6 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Leases
Weighted-average remaining operating lease term (years)	5 years	5 years
Weighted-average operating lease discount rate	5.40%	5.40%
Cash paid for amounts in the measurement of operating lease liabilities (net of sublease receipts)	$ 12,055	$ 24,017
Operating lease assets obtained in exchange for operating lease liabilities	$ 787	$ 5,655