Note 14 - Related Party Transactions - Summary of Accounts Receivable With Related Parties (Details) - USD ($)		Dec. 31, 2019	Dec. 31, 2018
Accounts receivable		$ 4,202,870	$ 2,292,151
Allstate Trading Company Inc [Member]
Accounts receivable	[1]	11,322	1,000
Enson Seafood GA Inc [Member]
Accounts receivable	[2]	348,833	255,412
Eagle Food Service LLC [Member]
Accounts receivable	[3]	979,591	817,275
Fortune One Foods Inc [Member]
Accounts receivable	[4]	53,862	130,314
Eastern Fresh LLC [Member]
Accounts receivable	[5]	1,511,075	784,836
Enson Trading LLC [Member]
Accounts receivable	[6]	341,200	170,633
Hengfeng Food Service Inc [Member]
Accounts receivable	[7]	477,541	83,654
N&F [Member]
Accounts receivable	[8]	119,241
ABC Trading, LLC [Member]
Accounts receivable	[9]	238,513
Other Related Parties [Member]
Accounts receivable		$ 121,692	$ 49,027

[1] Mr. Zhou Min Ni, the Chairman and Co-Chief Executive Officer of the Company, owns a 40% equity interest in this entity;

[2] Mr. Zhou Min Ni owns a 50% equity interest in this entity.

[3] Tina Ni, one of Mr. Zhou Min Ni's family members, owns a 50% equity interest in this entity.

[4] Mr. Zhou Min Ni owns a 17.5% equity interest in this entity.

[5] Mr. Zhou Min Ni owns a 30% equity interest in this entity.

[6] Mr. Zhou Min Ni owns a 25% equity interest in this entity.

[7] Mr. Zhou Min Ni owns a 45% equity interest in this entity.

[8] Mr. Zhou Min Ni owns a 25% equity interest in this entity.

[9] Mr. Zhou Min Ni owns a 25% equity interest in this entity.