Stockholders' Equity - Share Repurchase Program and Redeemable Common Stock - (Details) - USD ($)		12 Months Ended
	Oct. 26, 2018	Dec. 31, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Issuance of common stock		$ 9,295,309	$ 10,476,003
Value of share repurchase		$ 945,878	$ 313,879
Class K-I Common Stock
Class of Stock [Line Items]
Shares issued price per share		$ 10.00
Class K-T Common Stock
Class of Stock [Line Items]
Shares issued price per share		$ 10.00
A&R SRP | Class K Common Stock
Class of Stock [Line Items]
Percentage of weighted average number of shares outstanding	5.00%
Minimum balance required to be maintained by stockholders	$ 2,000
Maximum balance of shares requested to be repurchased		100
Amount of share repurchased		$ 945,878
Prior period of share repurchase		15 days
Repurchase requests period		30 days
A&R SRP | Class K-I Common Stock
Class of Stock [Line Items]
Percentage of weighted average number of shares outstanding	5.00%
Minimum balance required to be maintained by stockholders	$ 2,000
Maximum balance of shares requested to be repurchased		100
Prior period of share repurchase		30 days
Repurchase requests period		30 days
A&R SRP | Class K-T Common Stock
Class of Stock [Line Items]
Percentage of weighted average number of shares outstanding	5.00%
Minimum balance required to be maintained by stockholders	$ 2,000
Maximum balance of shares requested to be repurchased		100
Prior period of share repurchase		5 days
Repurchase requests period		2 years
Three unfilled standard repurchase requests
Class of Stock [Line Items]
Value of share repurchase		$ 84,708
Three unfilled standard repurchase requests | Class K Common Stock
Class of Stock [Line Items]
Repurchase of common stock (in shares)		7,500
Three unfilled standard repurchase requests | Class K-I Common Stock
Class of Stock [Line Items]
Repurchase of common stock (in shares)		1,613