Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Net revenues	$ 60,417	$ 57,089	$ 118,826	$ 111,150
Cost of revenues	31,839	30,054	62,719	60,116
Gross margin	28,578	27,035	56,107	51,034
Operating expenses:
Selling, general and administrative	12,583	12,677	24,709	24,967
Research and development	7,684	7,895	15,777	15,846
Amortization of intangible assets	1,638	1,762	3,351	3,524
Restructuring and other charges	221	1,162	559	2,430
Impairment of Intangible Assets, Finite-lived	231	0	231	0
Acquisition costs and other related expenses	(148)	0	1,980	0
Total operating expenses	22,209	23,496	46,607	46,767
Income from operations	6,369	3,539	9,500	4,267
Interest income	26	4	50	7
Interest expense	(5)	(8)	(7)	(16)
Other income, net	83	398	154	392
Income from continuing operations before income taxes	6,473	3,933	9,697	4,650
Tax provision	1,680	1,047	2,944	1,047
Income from continuing operations	4,793	2,886	6,753	3,603
Loss from discontinued operations, net of income taxes	0	(2,621)	0	(2,839)
Net income	$ 4,793	$ 265	$ 6,753	$ 764
Basic net loss per share: (in dollars per share)	$ 0.14	$ 0.09	$ 0.20	$ 0.11
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	0.00	(0.08)	0.00	(0.09)
Earnings Per Share, Basic	0.14	0.01	0.20	0.02
Diluted net loss per share: (in dollars per share)	0.14	0.09	0.20	0.11
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	0.00	(0.08)	0.00	(0.09)
Earnings Per Share, Diluted	$ 0.14	$ 0.01	$ 0.20	$ 0.02
Weighted-average shares outstanding:
Basic (in shares)	33,120	32,052	33,047	31,880
Diluted (in shares)	33,831	32,686	33,819	32,720
Comprehensive income:
Net income	$ 4,793	$ 265	$ 6,753	$ 764
Foreign currency translation adjustments	(28)	(111)	(11)	(208)
Total comprehensive income	$ 4,765	$ 154	$ 6,742	$ 556