Secured Line of Credit - Summary of Secured Line of Credit (Parenthetical) (Details) - Secured Line Of Credit Facility [Member]	6 Months Ended
	Jun. 30, 2021 Extension
Line Of Credit Facility [Line Items]
Debt instrument number of extensions	2
Debt instrument extended maturity period	1 year
Payment of extension fee percentage	0.25%
LIBOR [Member]
Line Of Credit Facility [Line Items]
Debt instrument variable rate	3.25%
Floor rate	3.50%