The outstanding balance of the 3.849% Secured Notes due April 2023 as of September 30, 2021 and December 31, 2020 was $997.9 million and $996.8 million, respectively.

Interest Expense and Amortization of Deferred Financing Costs

The components of interest expense and amortization of deferred financing costs are as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Interest expense on debt obligations	$	9,623	$	9,623	$	28,868	$	28,868
Amortization of deferred financing costs	346		346		1,038		1,038
Total	$	9,969	$	9,969	$	29,906	$	29,906