Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2011
Net sales	$ 158,374		$ 147,346		$ 179,170
Cost of sales	99,565		95,924		111,264
Gross profit	58,809		51,422		67,906
Operating expenses:
Marketing	9,545		10,328		10,592
Research and development	13,607		13,217		16,765
General and administrative	17,518		17,549		19,299
Total operating expenses	40,670		41,094		46,656
Operating income	18,139	[1]	10,328	[1]	21,250	[1]
Other income (expense):
Interest expense	(127)		(170)		(498)
Other income	494		656		1,174
Total other income, net	367		486		676
Income before income tax expense	18,506		10,814		21,926
Income tax expense	3,450		2,200		5,525
Net income	$ 15,056		$ 8,614		$ 16,401
Basic earnings per share: (in Dollars per share)	$ 1.19		$ 0.61		$ 1.17
Diluted earnings per share: (in Dollars per share)	$ 1.13		$ 0.59		$ 1.11
Weighted average common shares outstanding:
Basic (in Shares)	12,687		14,050		13,988
Diluted (in Shares)	13,281		14,702		14,746

[1] Unallocated amounts relates to the lease expense incurred on the London lease.