Notes Payable - Schedule of future annual maturities (Details)	Jun. 30, 2021 USD ($)
Notes Payable
Remainder of 2021	$ 0
2022	1,458,333
2023	2,500,000
2024	2,500,000
2025	1,041,667
Future annual maturities	$ 7,500,000

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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