Segment Information - Segment assets (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Intangible assets, net	$ 28,708,372	$ 32,160,919
Total segment assets	56,670,244	69,854,014
Prescription Medication Sales
Segment Reporting, Asset Reconciling Item [Line Items]
Intangible assets, net	21,834,257	24,625,686
Total segment assets	47,850,814	60,725,191
Medical Device Sales
Segment Reporting, Asset Reconciling Item [Line Items]
Intangible assets, net	6,874,115	7,535,233
Total segment assets	$ 8,819,430	$ 9,128,823