v3.22.2
FAIR VALUE OF FINANCIAL INSTRUMENTS (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value $ 20,087,500 $ 14,098,675 $ 6,667,897
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Net change in unrealized appreciation attributable to Level 3 investments still held   0 0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3   0 0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3   0 0
Short-Term Non-banking Loans      
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value 18,075,000 11,650,000 2,789,000
Common Stock      
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value   436,175 3,300,000
Preferred Stock      
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value 1,200,000 1,200,000 300,000
Other Equity      
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value 812,500 812,500 278,897
Level 1      
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value   436,175 3,300,000
Level 1 | Common Stock      
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value   436,175 3,300,000
Level 3      
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value 20,087,500 13,662,500 3,367,897
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Net change in unrealized appreciation attributable to Level 3 investments still held 0 0  
Level 3 | Short-Term Non-banking Loans      
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value 18,075,000 11,650,000 2,789,000
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance at the beginning 11,650,000 2,789,000  
Purchases and other adjustments to cost 7,025,000 24,765,333 7,543,000
Sales and redemptions (600,000) (15,904,333) (4,754,000)
Balance at the end $ 18,075,000 $ 11,650,000 $ 2,789,000
Level 3 | Short-Term Non-banking Loans | Interest rate | Minimum      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Interest rate 12 12 14
Level 3 | Short-Term Non-banking Loans | Interest rate | Maximum      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Interest rate 48 44 44
Level 3 | Preferred Stock      
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value $ 1,200,000 $ 1,200,000 $ 300,000
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance at the beginning 1,200,000 300,000 300,000
Purchases and other adjustments to cost   900,000  
Balance at the end 1,200,000 1,200,000 300,000
Level 3 | Other Equity      
FAIR VALUE OF FINANCIAL INSTRUMENTS      
Investments at Fair Value 812,500 812,500 278,897
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance at the beginning 812,500 278,897 534,200
Net change in unrealized appreciation     486,018
Purchases and other adjustments to cost   812,500  
Sales and redemptions   (278,897) (91,313)
Net realized loss     (650,008)
Balance at the end $ 812,500 $ 812,500 $ 278,897