Note 9 - Short-Term Debt (Details) - Interest on Short-term Debt (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 29, 2014
Note 9 - Short-Term Debt (Details) - Interest on Short-term Debt [Line Items]
Interest expense	$ 447
Stifel Financial Corp. [Member]
Note 9 - Short-Term Debt (Details) - Interest on Short-term Debt [Line Items]
Interest expense	402
CTBC [Member]
Note 9 - Short-Term Debt (Details) - Interest on Short-term Debt [Line Items]
Interest expense	$ 45