Promissory Notes - Future maturities (Details) $ in Thousands	Sep. 30, 2020 USD ($)
Future maturities of long-term debt
2020	$ 3,030
2021	12,105
Total Long-term Note	15,135
Future maturities of long-term debt, interest
2020	180
2021	2,875
Total	3,055
Future maturities of long-term debt, interest expense
2020	1,997
2021	3,878
Total	$ 5,875