Note 11 - Related Party Transactions (Details Textual) - USD ($)	Jun. 29, 2018	Jan. 17, 2018	Sep. 29, 2017
Common Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001	$ 0.0001
The Kevin Ross Gruneich Legacy Trust [Member] | Line of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 5,000,000
Dr. David C. Collins and Mrs. Mary C. Collins [Member] | Purchase Agreement [Member]
Related Party Transaction, Number of Shares Sold		7,495,332
Related Party Transaction, Amounts of Transaction		$ 7,495,332
Related Party Transaction, Sale of Stock, Price per Share		$ 1
Dr. David C. Collins and Mrs. Mary C. Collins [Member] | Reimbursement Agreement [Member]
Related Party Transaction, Amounts of Transaction	$ 402,186