Bonds Payable - Schedule of Maturities of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Long-term Debt, Fiscal Year Maturity [Abstract]
Long-term debt	$ 194,880	$ 245,988
Bonds
Long-term Debt, Fiscal Year Maturity [Abstract]
2022	46,286
2023	121,584
2024	13,505
2025	13,505
Long-term debt	$ 194,880