Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.20.2
Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Oct. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Long-term Purchase Commitment [Line Items]      
Maximum annual contributions per employee, percent   90.00%  
Employer matching contribution, percent of match, percentage   30.00%  
Employer matching contribution, percent of employees' gross pay, percentage   60.00%  
Employer contribution   $ 276,000 $ 263,000
AMST | Goldline, LLC      
Long-term Purchase Commitment [Line Items]      
Escrow deposit     $ 750,000
Decrease in escrow deposit $ 460,000