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Leases - Components of lease expense (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Components of lease expense
Operating lease cost	$ 231,989	$ 231,989
Variable lease cost	146,421	161,946
Total operating lease cost	378,410	393,935
Related cash flows
Operating cash outflows from operating leases	$ 266,215	$ 259,722

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- Definition

Amount of lease cost recognized by lessee for lease contract.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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