Unaudited Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended															12 Months Ended
	Jun. 30, 2018	[1],[2]	Mar. 31, 2018	[2],[3]	Dec. 31, 2017	Sep. 30, 2017	[4]	Jun. 30, 2017	[5],[6]	Mar. 31, 2017	[6],[7]	Dec. 31, 2016	[6]	Sep. 30, 2016	[8]	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 168,877		$ 185,998		$ 171,229	$ 185,255		$ 194,620		$ 190,128		$ 125,552		$ 128,018		$ 711,359	$ 638,318	$ 558,524
Gross profit	9,914		27,696		33,970	39,983		36,829		42,319		30,805		30,839		111,563	140,792	142,785
Net income (loss)	$ (34,726)		$ (267,985)		$ (13,864)	$ 454		$ 1,967		$ 5,588		$ (564)		$ 4,385		$ (316,121)	$ 11,376	$ 34,766
Net loss per diluted share (in dollars per share)	$ (0.98)		$ (7.59)		$ (0.39)	$ 0.01		$ 0.06		$ 0.16		$ (0.02)		$ 0.15		$ (8.98)	$ 0.35	$ 1.18

[1] Includes pretax item of $920 environmental remediation charge in connection with Arsynco and $76,500 valuation allowance on deferred tax assets.

[2] The Company (i) has recorded in its 2018 year-end financial statements a $76,500 valuation allowance against its U.S. net deferred tax assets for the year ended June 30, 2018, (ii) has determined that $71,350 of this non-cash charge should have been recognized in the third quarter of fiscal 2018, rather than in the fourth quarter of fiscal 2018, and (iii) accordingly will amend its most recently filed Quarterly Report on Form 10-Q to restate its third quarter and nine month consolidated financial statements to reflect $71,350 of the charge as a third quarter event. A reconciliation of the amounts previously reported for the quarter ended March 31, 2018 with the amounts to be set forth in such restated financial statements, is set forth below: For the quarter ended March 31, 2018 As reported Adjustment As restated Income (loss) before income taxes $ (196,635 ) $ (71,350 ) $ (267,985 ) Net income (loss) per diluted share $ (5.57 ) $ (2.02 ) $ (7.59 )

[3] Includes impairment charges on goodwill and intangibles of $256,266 related to the Rising reporting unit.

[4] Includes pretax item of $902 environmental remediation charge in connection with Arsynco.

[5] Includes pretax item of $3,139 representing immaterial correction of an error associated with certain accrued expenses.

[6] Results for the last nine days of the quarter ended December 31, 2016 and for the subsequent two quarters reflect the acquisition of certain generic products and related assets from Citron and Lucid on December 21, 2016.

[7] Includes pretax item of $733 environmental remediation charge in connection with Arsynco.

[8] Includes pretax item of $170 environmental remediation charge in connection with Arsynco.