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Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Difference between expected income tax provision applying domestic federal statutory tax rate and reported income tax provision
Expected provision for Federal income taxes at the statutory rate	$ 2,868	$ 19,887	$ 12,570
State income taxes, net of Federal benefit	1,023	2,275	1,252
Charges without tax benefit	1,478	1,405	1,231
Change in valuation allowance	25	0	(140)
IRS S199 deduction	0	(1,546)	(844)
Research & Development Credit	(1,197)	(1,793)	(1,450)
Foreign tax differential	(529)	(182)	(160)
Other	(276)	262	(551)
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Amount	6,669	(374)	0
Provision for income taxes	$ 10,090	$ 19,934	$ 11,908

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