Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Net revenues	$ 65,898	$ 59,578	$ 184,724	$ 170,728
Cost of revenues	35,407	31,660	98,126	91,776
Gross margin	30,491	27,918	86,598	78,952
Operating expenses:
Selling, general and administrative	12,687	11,842	37,396	36,809
Research and development	7,269	8,115	23,046	23,961
Amortization of intangible assets	1,754	1,744	5,105	5,268
Restructuring and other charges	409	27	968	2,457
Impairment of Intangible Assets, Finite-lived	0	0	231	0
Acquisition costs and other related expenses	1,553	33	3,533	33
Total operating expenses	23,672	21,761	70,279	68,528
Income from operations	6,819	6,157	16,319	10,424
Interest income	39	6	89	13
Interest expense	(3)	(7)	(10)	(23)
Other income, net	144	7	298	399
Income from continuing operations before income taxes	6,999	6,163	16,696	10,813
Tax provision	2,473	1,469	5,417	2,516
Income from continuing operations	4,526	4,694	11,279	8,297
Loss from discontinued operations, net of income taxes	0	(1,019)	0	(3,858)
Net income	$ 4,526	$ 3,675	$ 11,279	$ 4,439
Basic net loss per share: (in dollars per share)	$ 0.14	$ 0.14	$ 0.34	$ 0.26
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	0.00	(0.03)	0.00	(0.12)
Earnings Per Share, Basic	0.14	0.11	0.34	0.14
Diluted net loss per share: (in dollars per share)	0.13	0.14	0.33	0.25
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	0.00	(0.03)	0.00	(0.12)
Earnings Per Share, Diluted	$ 0.13	$ 0.11	$ 0.33	$ 0.13
Weighted-average shares outstanding:
Basic (in shares)	33,251	32,298	33,052	32,001
Diluted (in shares)	33,991	33,233	33,830	32,953
Comprehensive income:
Net income	$ 4,526	$ 3,675	$ 11,279	$ 4,439
Foreign currency translation adjustments	93	0	82	(208)
Total comprehensive income	$ 4,619	$ 3,675	$ 11,361	$ 4,231