Notes Payable - Schedule of Debt (Details) - Senior Notes [Member] - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Notes Payable	$ 373,756	$ 373,885
Series C Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate (as a percent)	5.64%
Carrying Value	$ 47,855	47,838
Series D Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate (as a percent)	5.72%
Carrying Value	$ 16,914	16,910
Series E Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate (as a percent)	4.46%
Carrying Value	$ 74,564	74,546
Series F Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate (as a percent)	4.55%
Carrying Value	$ 59,600	59,589
Series G Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate (as a percent)	4.64%
Carrying Value	$ 39,709	39,703
Series H Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate (as a percent)	3.42%
Carrying Value	$ 31,339	31,597
Series I Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate (as a percent)	2.20%
Carrying Value	$ 37,887	37,867
Series J Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate (as a percent)	5.02%
Carrying Value	$ 65,888	$ 65,835