Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical)

v3.19.2
Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - shares
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Sale of units, net of underwriting discounts 7,000,000  
Sale of private placement warrants 2,900,000  
Over-Allotment Option | Underwriter    
Number of shares forfeiture   262,500