Annual report pursuant to Section 13 and 15(d)

Accrued Expenses - Additional Information (Details)

v3.20.1
Accrued Expenses - Additional Information (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Other Accrued Liabilities, Current $ 174,614 $ 795,974
TDG Acquisition Company LLC [Member]    
Other Accrued Liabilities, Current   $ 750,000