Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	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, 2016	Jun. 30, 2015	Jun. 30, 2014
Quarterly Financial Information Disclosure [Abstract]
Net revenues	$ 241,470	$ 205,105	$ 191,434	$ 189,207	$ 196,683	$ 182,709	$ 176,736	$ 185,833	$ 827,216	$ 741,961	$ 683,261
Cost of goods sold	148,859	127,436	120,090	118,018	121,687	116,984	113,718	117,974	514,403	470,363	456,545
Internal research and development	20,102	14,946	12,155	13,151	12,598	12,874	12,845	12,943	60,354	51,260	42,523
Selling, general and administrative	43,595	43,333	37,408	36,310	39,185	35,192	33,642	35,520	160,646	143,539	137,707
Interest expense	1,066	769	597	649	777	844	1,038	1,204	3,081	3,863	4,479
Other expense (income), net	(429)	1,257	(994)	(1,057)	(97)	1,534	(9,295)	1,682	(1,223)	(6,176)	(3,634)
Earnings from Continuing Operations Before Income Taxes	28,277	17,364	22,178	22,136	22,533	15,281	24,788	16,510	89,955	79,112	45,641
Income taxes	13,934	2,426	3,187	4,922	5,464	773	2,692	4,208	24,469	13,137	7,325
Net Earnings	$ 14,343	$ 14,938	$ 18,991	$ 17,214	$ 17,069	$ 14,508	$ 22,096	$ 12,302	$ 65,486	$ 65,975	$ 38,449
Basic earnings per share:	$ 0.23	$ 0.24	$ 0.31	$ 0.28	$ 0.28	$ 0.24	$ 0.36	$ 0.20	$ 1.07	$ 1.08	$ 0.62
Diluted earnings per share:	$ 0.23	$ 0.24	$ 0.30	$ 0.27	$ 0.27	$ 0.23	$ 0.35	$ 0.20	$ 1.04	$ 1.05	$ 0.60