Bonds Payable (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Schedule of Bonds Payable

The outstanding balance of our Bonds at December 31, 2020 and 2019 is as follows:

	December 31,
Bond Issuance	2020	2019	Interest Rate		Maturity
Series A Bonds(1)(2)	95,133	92,653	7.30	%	7/31/23
Series B Bonds(3)	65,318	60,764	6.80	%	7/31/25
Series C Bonds(2)	85,537	79,572	4.65	%	1/31/23
	245,988	232,989
Less unamortized deferred issuance costs	(8,100)	(9,724)
	237,888	223,265

(1)    On November 30, 2020, we issued $19,693 in additional bonds for $18,822 in net proceeds.

(2)    The bonds are collateralized by the assets of SPC.

(3)    The bonds are collateralized by a trust deed in Browning Place, a 625,297 square foot office building in Farmers Branch, Texas.

Schedule of Maturities of Bonds Payable

The aggregate maturities of our Bonds are as follows:

Year	Amount
2021	$	44,775
2022	44,775
2023	130,310
2024	13,064
2025	13,064
	$	245,988