Note 16 - Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Deferred tax assets:
Reserves and allowances	$ 5,504	$ 6,018
Other liabilities and accruals	6,297	6,176
Depreciable assets	404	83
Net operating loss carryforwards	10,236	11,675
Share-based compensation	4,721	5,098
Credits carryforward	2,188	2,440
Total deferred tax assets	29,350	31,490
Less: Valuation allowances and other reserves	(4,611)	(3,466)
Net deferred tax assets	$ 24,739	$ 28,024