Note 13 - Credit Facility and Convertible Notes (Details Textual)			9 Months Ended
	Dec. 27, 2016 USD ($) $ / shares shares	Apr. 22, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Mar. 31, 2016 USD ($)	Dec. 16, 2015 USD ($) $ / shares	Mar. 11, 2015 USD ($)
Gain (Loss) on Extinguishment of Debt			$ 166,000
Line of Credit Facility, Remaining Borrowing Capacity			$ 1,100,000		$ 3,000,000
Line of Credit Facility Current Ratio Covenant			2
Junior Secured Convertible Promissory Note [Member]
Debt Instrument, Face Amount	$ 2,000,000					$ 2,500,000
Debt Instrument, Interest Rate, Stated Percentage	10.00%
Debt Instrument, Convertible, Interest Rate When Not In Default	12.00%
Debt Instrument, Default Interest Rate	13.00%
Debt Instrument, Convertible, Conversion Price | $ / shares	$ 3					$ 3
Debt Instrument, Convertible, Price Reduction Trigger | $ / shares	2.50					2.50
Debt Instrument, Convertible, Spread on Offering Price | $ / shares	$ 0.50					$ 0.50
Maximum Convertible Stock, Percent	19.99%
Junior Secured Convertible Promissory Note [Member] | Debt Extinguishment With Related Party [Member]
Gain (Loss) on Extinguishment of Debt			$ 166,000
Credit Facility Guarantee [Member]
Guarantee Agreement Annual Fee Percentage	10.00%
Credit Facility Guarantee [Member] | Grantor [Member]
Stock Issued During Period, Shares, New Issues | shares	277,248
Shares Issued, Price Per Share | $ / shares	$ 1.89
Credit Facility Guarantee [Member] | Grantor [Member] | Value of Accrued Fees Paid With Issuance of Stock [Member]
Stock Issued During Period, Value, New Issues	$ 524,000
Largest Stockholder and MILFAM II L.P. (Affiliate) [Member] | Credit Facility Guarantee [Member]
Guarantee Agreement, PIK Commitment Fee, Minimum Amount		$ 76,000
Guarantor Obligations, Maximum Exposure, Undiscounted							$ 3,000,000
Guarantor Obligations, Current Carrying Value			$ 10,900,000		$ 9,000,000