Capital Lease Obligations - Future Annual Minimum Payments (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Capital Leased Assets [Line Items]
Interest expense related to capital leases	$ 161,629	$ 287,210
Future annual minimum payments required under lease obligations
2020	19,813,539
2021	255,652
Total	20,069,191
Less amount representing interest	(86,198)
Capital lease obligations	19,982,993
Current portion	(19,749,854)	(20,814,404)
Noncurrent	233,139	172,467
Equipment under capital leases
Equipment under capital leases
Cost of equipment under capital leases	39,100,000	29,300,000
Accumulated depreciation of equipment under capital leases	$ 11,700,000	$ 8,800,000
Minimum
Capital Leased Assets [Line Items]
Interest rates	0.00%
Maximum
Capital Leased Assets [Line Items]
Interest rates	10.20%

The percentage of financing charge for leasing arrangements meeting the criteria for capitalization.

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

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Amount of minimum lease payments for capital leases.

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Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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The financing charge for leasing arrangements meeting the criteria for capitalization.

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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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