Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	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, 2015	Jun. 30, 2014	Jun. 30, 2013
Quarterly Financial Information Disclosure [Abstract]
Net revenues	$ 196,683	$ 182,709	$ 176,736	$ 185,833	$ 187,921	$ 173,555	$ 171,765	$ 150,020	$ 741,961	$ 683,261	$ 551,075
Cost of goods sold	121,687	116,984	113,718	117,974	125,600	118,865	118,371	93,709	470,363	456,545	347,558
Internal research and development	12,598	12,874	12,845	12,943	11,322	12,099	11,355	7,747	51,260	42,523	22,689
Selling, general and administrative	39,185	35,192	33,642	35,520	36,295	33,848	32,471	35,093	143,539	137,707	109,337
Interest expense	777	844	1,038	1,204	1,415	1,412	1,169	483	3,863	4,479	1,160
Other expense (income), net	(97)	1,534	(9,295)	1,682	(868)	(1,694)	(1,125)	53	(6,176)	(3,634)	(7,155)
Earnings from Continuing Operations Before Income Taxes	22,533	15,281	24,788	16,510	14,157	9,025	9,524	12,935	79,112	45,641	77,486
Income taxes	5,464	773	2,692	4,208	1,502	494	2,086	3,243	13,137	7,325	18,766
Earnings from Continuing Operations					12,655	8,531	7,438	9,692	65,975	38,316	58,720
Earnings (loss) from discontinued operation							131	2		133	(6,789)
Net Earnings	$ 17,069	$ 14,508	$ 22,096	$ 12,302	$ 12,655	$ 8,531	$ 7,569	$ 9,694	$ 65,975	$ 38,449	$ 51,931
Basic earnings (loss) per common share:
Continuing operations					$ 0.21	$ 0.14	$ 0.12	$ 0.16	$ 1.08	$ 0.62	$ 0.92
Discontinued operation											(0.11)
Consolidated	$ 0.28	$ 0.24	$ 0.36	$ 0.20	0.21	0.14	0.12	0.16	1.08	0.62	0.81
Diluted earnings (loss) per common share:
Continuing operations					0.20	0.13	0.12	0.15	1.05	0.60	0.90
Discontinued operation											(0.11)
Consolidated	$ 0.27	$ 0.23	$ 0.35	$ 0.20	$ 0.20	$ 0.13	$ 0.12	$ 0.15	$ 1.05	$ 0.60	$ 0.80