Note 1 - Nature of the Business and Summary of Significant Accounting Policies - Net Sales by Class of Retailer (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net Sales	$ 183,331	$ 146,007	$ 350,853	$ 278,179
Grocery (including Online), Mass and Club [Member]
Net Sales	164,343	127,572	311,141	243,090
Pet Specialty and Natural [Member]
Net Sales	$ 18,988	$ 18,435	$ 39,712	$ 35,089