Acquisition (Narrative) (Details) Layers in Millions	May 30, 2021 USD ($) a Layers	May 29, 2021
Red River Valley Egg Farm Llc [Member]
Business Acquisition [Line Items]
Ownership percentage		50.00%
Red River Valley Egg Farm Llc [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interest acquired	50.00%
Number of laying hens acquired | Layers	1.7
Area of land | a	400
Gain on remeasurement of interest held prior to acquisition	$ 4,500,000
Discrete income tax benefit	8,300,000
Reduction of deferred income tax related to outside-basis of equity investment	7,300,000
Reduction to income tax expense on remeasurement gain	955,000
Deferred tax liability recognized	$ 8,481,000