Note 12 - Income Taxes (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

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

	March 31,
	2018			2017
Domestic pre-tax loss	$	(9,015	)	$	(6,924	)
Foreign pre-tax loss		(1,488	)		(2,721	)
Total pre-tax loss	$	(10,503	)	$	(9,645	)

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

	March 31,
	2018			2017
Federal tax at statutory rate	$	3,307		$	3,293
Computed state tax		243			200
Foreign rate differential		(358	)		(433	)
Losses not benefited		8,919			(2,642	)
Change in tax reserve		(145	)		618
Nondeductible expenses		(656	)		(916	)
Research and development tax credits		9			109
Change in tax rate		(10,764	)		-
Income tax benefit	$	555		$	229

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

	March 31,
	2018			2017
Current:
US	$	-		$	-
State		(8	)		5
Foreign		(22	)		(66	)
		(30	)		(61	)
Deferred:
Federal		84			-
State		12			-
Foreign		489			290
		585			290
Total benefit from income taxes	$	555		$	229

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

	March 31,
	2018			2017
Deferred Tax Assets:
Net operating loss carryforward	$	15,615		$	22,378
Intangible assets		7,183			9,289
Tax credit carryforwards		3,267			2,824
Reserves and accruals		398			391
Stock compensation		687			676
Fixed assets		7			32
Deferred revenue		10			83
		27,167			35,673
Deferred Tax Liability
Intangible assets		(264	)		(549	)
Cumulative translation adjustment		(84	)		-
		(348	)		(549	)
Gross Deferred Tax Assets		26,819			35,124
Valuation Allowance		(26,330	)		(35,124	)
Net Deferred Tax Liabilities	$	489		$	-

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

Balance at April 1, 2017	$	1,410
Increases related to current year tax positions		3
Increase related to prior year tax positions		75
Balance at March 31, 2018	$	1,488