Note 5 - Debt (Details) (USD $)	3 Months Ended			0 Months Ended										0 Months Ended					1 Months Ended				1 Months Ended			1 Months Ended		3 Months Ended		12 Months Ended		1 Months Ended		3 Months Ended				1 Months Ended	0 Months Ended	1 Months Ended		0 Months Ended	1 Months Ended		0 Months Ended	1 Months Ended		0 Months Ended	1 Months Ended		1 Months Ended		0 Months Ended	3 Months Ended					3 Months Ended
	Jun. 27, 2014	Jun. 28, 2013	Mar. 31, 2014	Jun. 06, 2014 Common Class A [Member]	Jun. 10, 2014 Common Class A [Member]	Jun. 12, 2014 Common Class A [Member]	Feb. 28, 2013 Private Placement [Member] Partners For Growth [Member]	Feb. 08, 2013 Private Placement [Member] Partners For Growth [Member]	Feb. 28, 2013 Private Placement [Member] Partners for Growth One [Member]	Feb. 08, 2013 Private Placement [Member] Partners for Growth One [Member]	Feb. 28, 2013 Private Placement [Member] Partners for Growth Two [Member]	Feb. 08, 2013 Private Placement [Member] Partners for Growth Two [Member]	Feb. 14, 2013 Partners For Growth [Member]	Feb. 08, 2013 Partners For Growth [Member] Maximum [Member]	Jun. 27, 2014 Partners for Growth One [Member]	Jun. 27, 2014 Partners for Growth Two [Member]	Jun. 20, 2014 Fees Waived [Member] Silicon Valley Loan Agreement [Member]	Jun. 20, 2014 Fees Waived [Member] Partners For Growth [Member]	Jan. 31, 2012 Loans Payable [Member] Silicon Valley Loan Agreement [Member]	Jun. 28, 2013 Loans Payable [Member] Silicon Valley Loan Agreement [Member]	Jun. 28, 2013 Export Import Sublimit [Member] Silicon Valley Loan Agreement [Member]	Jun. 27, 2014 Line of Credit [Member] Silicon Valley Loan Agreement [Member]	Jun. 20, 2014 Line of Credit [Member] Silicon Valley Loan Agreement [Member] Minimum [Member]	Jun. 20, 2014 Line of Credit [Member] Silicon Valley Loan Agreement [Member] Maximum [Member]	Jun. 27, 2014 Bank Term Loan [Member] Silicon Valley Loan Agreement [Member]	Jun. 20, 2014 Bank Term Loan [Member] Silicon Valley Loan Agreement [Member] Minimum [Member]	Jun. 20, 2014 Bank Term Loan [Member] Silicon Valley Loan Agreement [Member] Maximum [Member]	Jun. 27, 2014 Capital Lease Obligations [Member]	Jun. 28, 2013 Capital Lease Obligations [Member]	Mar. 31, 2014 Capital Lease Obligations [Member]	Jun. 28, 2013 Silicon Valley Loan Agreement [Member] Line of Credit [Member]	Jan. 31, 2012 Silicon Valley Loan Agreement [Member] Period One [Member]	Jan. 31, 2012 Silicon Valley Loan Agreement [Member] Period Two [Member]	Jun. 27, 2014 Silicon Valley Loan Agreement [Member]	Jun. 28, 2013 Silicon Valley Loan Agreement [Member]	Apr. 30, 2014 Silicon Valley Loan Agreement [Member]	Feb. 10, 2014 Silicon Valley Loan Agreement [Member]	Jun. 20, 2014 SVB and PFG Agreements [Member] Period One [Member]	Feb. 10, 2014 SVB and PFG Agreements [Member] Period One [Member]	Apr. 30, 2014 SVB and PFG Agreements [Member] Period One [Member]	Jun. 20, 2014 SVB and PFG Agreements [Member] Period Two [Member]	Feb. 10, 2014 SVB and PFG Agreements [Member] Period Two [Member]	Apr. 30, 2014 SVB and PFG Agreements [Member] Period Two [Member]	Jun. 20, 2014 SVB and PFG Agreements [Member] Period Three [Member]	Feb. 10, 2014 SVB and PFG Agreements [Member] Period Three [Member]	Apr. 30, 2014 SVB and PFG Agreements [Member] Period Three [Member]	Jun. 20, 2014 SVB and PFG Agreements [Member] Period Four [Member]	Feb. 10, 2014 SVB and PFG Agreements [Member] Period Four [Member]	Apr. 30, 2014 SVB and PFG Agreements [Member] Period Four [Member]	Apr. 30, 2014 SVB and PFG Agreements [Member] Minimum [Member]	Jan. 31, 2014 Partners For Growth [Member] Period One [Member]	Jan. 31, 2014 Partners For Growth [Member] Period Two [Member]	Feb. 08, 2013 Partners For Growth [Member]	Jun. 27, 2014 Partners For Growth [Member]	Jun. 28, 2013 Partners For Growth [Member]	Apr. 30, 2014 Partners For Growth [Member]	Feb. 10, 2014 Partners For Growth [Member]	Jan. 31, 2014 Partners For Growth [Member]	Jun. 27, 2014 Michigan Economic Development Corporation Loan Agreement [Member]	Jun. 28, 2013 Michigan Economic Development Corporation Loan Agreement [Member]	Dec. 31, 2006 Michigan Economic Development Corporation Loan Agreement [Member]
Note 5 - Debt (Details) [Line Items]
Debt Instrument, Term																			3 years
Loans Payable to Bank	$ 250,000		$ 306,000																	$ 1,000,000
Line of Credit Facility, Maximum Borrowing Capacity																					3,000,000										5,000,000
Covenant Requirements Liquidity Ratio																																			2.25			1.30	1.30	1.30	2.00	2.25	2.00							2.00								2.25
Debt Instrument Covenant Annual Earnings Before Interest Taxes Depreciation and Amortization																																(300,000)	1					(850,000)	(1,200,000)	(800,000)	(300,000)	(800,000)	(600,000)	1	(600,000)	(250,000)	100,000	1	1		(300,000)	1
Debt Instrument, Fee Amount																																					50,000																				75,000
Debt Instrument, Covenant Requirement, Liquidity Ratio, Compliance Fees																	15,000	20,000																		15,000																				20,000
Proceeds from Issuance of Common Stock	2,914,000			2,657,000	398,606	2,900,000
Stock Issued During Period, Shares, New Issues (in Shares)				5,391,304		6,200,000
Stock Issued During Period, Shares, Conversion of Units (in Shares)					808,696
Debt Instrument Interest Additional Interest Above Prime Rate																							0.50%	4.00%		0.75%	4.50%
Debt Instrument, Interest Rate, Effective Percentage																									6.50%
Line of Credit Facility, Interest Rate at Period End																						6.00%
Long-term Line of Credit	1,294,000		2,147,000																			1,300,000
Line of Credit Facility, Remaining Borrowing Capacity																						3,100,000
Interest Paid	97,000	92,000																										1,000	0	1,700				38,000	12,000																			50,000	71,000				8,000	9,000
Debt Instrument, Face Amount																																																					2,500,000								2,200,000
Debt Instrument, Periodic Payment, Principal																																																					59,524
Debt Instrument, Interest Rate, Stated Percentage																																																					11.75%						5.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)							1,195,000	1,195,000	995,000	995,000	200,000	200,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share)									$ 0.50	$ 0.50	$ 1.00	$ 1.00			$ 0.500	$ 1.000
Minimum Trading Days For Calculating Closing Price of Common Stock																																																					45 days
Exercise Of Stock Warrants Value														250,000
Warrants and Rights Outstanding													434,000
Debt Instrument, Unamortized Discount																																																						179,000
Unsecured Debt	$ 654,000		$ 654,000																																																								$ 327,000