Summary of Significant Accounting Policies (Narrative) (Detail) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended				3 Months Ended												12 Months Ended
	May 08, 2014	Aug. 25, 2016	Nov. 30, 2015	Apr. 30, 2014	Mar. 31, 2011	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Summary Of Significant Accounting Policies [Line Items]
Restricted cash						$ 104				$ 58								$ 104	$ 58
Common stock, shares authorized						75,000,000				40,000,000								75,000,000	40,000,000
Stock repurchase program, expiration date	May 2017
Stock repurchase program, shares authorized	5,000
Cash dividends paid						$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.06
Dividends declared, per share																		$ 0.24	$ 0.24	$ 0.24
Additional gross profit related to a change in estimate for product returns																			$ 3,497
Shared profits included in cost of sales related to collaborative arrangements																		$ 41,036	51,352	$ 26,972
Property held for sale						$ 6,868				$ 6,574								6,868	6,574
Depreciation and amortization																		$ 1,522	$ 1,571	$ 1,430
Senior Notes
Summary Of Significant Accounting Policies [Line Items]
Conversion price						$ 33.215												$ 33.215
Interest rate swap | Cash flow hedging
Summary Of Significant Accounting Policies [Line Items]
Payment for termination of interest rate swap			$ 420
Derivative, notional amount				$ 25,750	$ 20,000
Derivative, expiration date				Apr. 30, 2019	Dec. 31, 2015
Subsequent Event
Summary Of Significant Accounting Policies [Line Items]
Dividends declared, per share		$ 0.065
Dividends declared, date of declaration		Aug. 25, 2016
Dividends declared, date of distribution		Sep. 20, 2016
Dividends declared, date of record		Sep. 09, 2016