Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Inventory [Line Items]
Inventory	$ 20,271	$ 20,493
Supplies, embryos and other production materials
Inventory [Line Items]
Inventory	3,386	2,673
Work in process
Inventory [Line Items]
Inventory	4,422	4,767
Livestock
Inventory [Line Items]
Inventory	10,991	11,040
Feed
Inventory [Line Items]
Inventory	$ 1,472	$ 2,013