Subsequent Event (Details) - USD ($) $ / shares in Units, $ in Thousands	Aug. 04, 2020	Apr. 16, 2020
Subsequent Event [Line Items]
Total SBA payroll protection program loan received		$ 900
Share issue costs	$ 400
Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from shares issued	$ 4,680
Class Of Warrant Or Right Exercise Price Of Warrants Or Rights Granted	$ 0.75
Class Of Warrant Or Right Shares Issued On Exercise Granted	4,500,000
Sale of Stock, Price Per Share	$ 0.52
Share issue costs	$ 400
Common Stock Warrants Term	2 years
Common shares issued for cash, net of issue costs (in shares)	9,000,000
Sale of Stock, Consideration Received on Transaction After Deducting Other Costs	$ 4,300