Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 30, 2020	Apr. 30, 2019
Consolidated Balance Sheets
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 1,190	$ 1,041
Due from Related Parties	$ 15,779	$ 9,028
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, Authorized shares	10,000,000	10,000,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, Authorized shares	100,000,000	100,000,000
Common stock, Issued shares	24,063,639	23,946,293
Common stock, outstanding shares	24,063,639	23,946,293