Summary of Stock Option Activity (Detail) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2017 USD ($) $ / shares shares
Options Outstanding, Shares
Beginning Balance | shares	949
Granted | shares	0
Exercised | shares	0
Forfeited/Expired | shares	(7)
Ending Balance | shares	942
Exercisable as of September 30, 2017 | shares	529
Expected to vest as of September 30, 2017 | shares	413
Total | shares	942
Weighted Average Exercise Price Per Share
Beginning Balance | $ / shares	$ 146.79
Granted | $ / shares	0.00
Exercised | $ / shares	0.00
Forfeited/Expired | $ / shares	201.25
Ending Balance | $ / shares	146.36
Exercisable as of September 30, 2017 | $ / shares	135.31
Expected to vest as of September 30, 2017 | $ / shares	160.54
Total | $ / shares	$ 146.36
Aggregate Intrinsic Value
Exercised | $	$ 0
Exercisable as of September 30, 2017 | $	2,524
Expected to vest as of September 30, 2017 | $	906
Total | $	$ 3,430
Weighted Average Remaining Contractual Term (Years)
Exercisable as of September 30, 2017	6 years 9 months 18 days
Expected to vest as of September 30, 2017	7 years 9 months 18 days
Total	7 years 3 months 19 days