Note 9 - Income Taxes (Tables)

12 Months Ended

Jun. 30, 2017

Notes Tables

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	Fiscal Years Ended June 30,
	2017			2016
United States	$	(5.1	)	$	(4.9	)
Foreign		(24.0	)		(20.5	)
Total	$	(29.1	)	$	(25.4	)

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Fiscal Years Ended June 30,
	2017		2016
Current:
Federal	$	-	$	-
State		-		-
Foreign		0.3		-
Total tax expense	$	0.3	$	-

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Fiscal Years Ended June 30,
	201 7			201 6
Income tax (benefit) expense at federal statutory rate	$	(10.2	)	$	(8.9	)
State and local income taxes, net of federal benefit		(0.2	)		(0.2	)
Foreign tax rate differential		1.4			1.0
Change in valuation allowance		8.4			9.4
ISO expense		0.3			0.3
Japanese withholding tax		0.3			-
Foreign tax credit		-			(0.2	)
Adjustment to deferred income tax assets		0.3			(0.9	)
Other		-			(0.5	)
Income tax expense	$	0.3		$	-

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	As of June 30,
	201 7			201 6
Deferred tax assets:
Foreign net operating loss carryforwards	$	27.9		$	20.2
US federal and state loss carryforwards		7.1			6.1
Research credits		2.4			2.2
Amortization		-			0.6
Accrued compensated-related costs		2.0			1.6
Sale of future royalty rights		5.0			5.4
Other		-			0.1
Subtotal		44.4			36.2
Less valuation allowance		(44.4	)		(36.2	)
Total net deferred taxes	$	-		$	-