Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 2,915	$ 2,915
Accumulated depreciation and impairment	(2,307)	(2,091)
Property and equipment, net	608	824
Zest Labs freshness hardware [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	2,493	2,493
Computers and software costs [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	222	222
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 200	$ 200