Note 1 - Nature of the Business and Summary of Significant Accounting Policies - Net Sales by Class of Retailer (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net Sales	$ 79,980,060	$ 60,052,179	$ 150,077,864	$ 114,844,381
Grocery (including Online), Mass and Club [Member]
Net Sales	68,284,447	49,920,536	129,103,297	95,628,433
Pet Specialty and Natural [Member]
Net Sales	$ 11,695,613	$ 10,131,643	$ 20,974,567	$ 19,215,948