Segment Disclosures and Concentrations of Risk - Schedule of Total Assets by Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total assets	$ 1,381,170	$ 1,625,905
Healthcare
Segment Reporting Information [Line Items]
Total assets	527,353	526,013
Nutrition
Segment Reporting Information [Line Items]
Total assets	$ 853,817	$ 1,099,892