Note 4.Debt Financing

The Company’s debt financing was comprised of the following at September 30, 2017 and December 31, 2016 (dollars in thousands):


	September 30, 2017		December 31, 2016
Unsecured
Senior notes	$	6,919,871	$	6,953,343
Revolving credit facility		1,436,000		766,000
Term financings		211,782		211,346
Convertible senior notes		199,985		199,995
Total unsecured debt financing		8,767,638		8,130,684
Secured
Term financings		511,353		619,767
Export credit financing		46,583		51,574
Total secured debt financing		557,936		671,341

Total debt financing		9,325,574		8,802,025
Less: Debt discounts and issuance costs		(88,254)		(88,151)
Debt financing, net of discounts and issuance costs	$	9,237,320	$	8,713,874

The Company’s secured obligations as of September 30, 2017 and December 31, 2016 are summarized below (dollars in thousands):


	September 30, 2017		December 31, 2016
Nonrecourse	$	215,165	$	245,155
Recourse		342,771		426,186
Total secured debt financing	$	557,936	$	671,341
Number of aircraft pledged as collateral		21		25
Net book value of aircraft pledged as collateral	$	1,197,399	$	1,421,657

Senior unsecured notes

As of September 30, 2017, the Company had $6.9 billion in senior unsecured notes outstanding. As of December 31, 2016, the Company had $7.0 billion in senior unsecured notes outstanding.

On June 12, 2017, the Company issued $600.0 million in aggregate principal amount of senior unsecured notes due 2022 that bear interest at a rate of 2.625%.

On March 8, 2017, the Company issued $500.0 million in aggregate principal amount of senior unsecured notes due 2027 that bear interest at a rate of 3.625%.

Unsecured revolving credit facility

In November 2017, the Company executed a commitment increase to its unsecured revolving credit facility. This increased the aggregate facility capacity by $50.0 million to $3.8 billion.

In May 2017, the Company amended and extended its unsecured revolving credit facility whereby, among other things, the Company extended the final maturity date from May 5, 2020 to May 5, 2021 and increased the total revolving commitments to approximately $3.7 billion from approximately $3.5 billion with an interest rate of LIBOR plus 1.05% with a 0.20% facility fee. Lenders hold revolving commitments totaling approximately $3.1 billion that mature on May 5, 2021, commitments totaling approximately $217.7 million that mature on May 5, 2020, commitments totaling $290.0 million that mature on May 5, 2019, and commitments totaling $55.0 million that mature on May 5, 2018.

The total amount outstanding under our unsecured revolving credit facility was approximately $1.4 billion and $766.0 million as of September 30, 2017 and December 31, 2016, respectively.

Maturities

Maturities of debt outstanding as of September 30, 2017 are as follows (in thousands):


Years ending December 31,

2017	$	39,677
2018		1,565,765
2019		1,091,216
2020		1,258,535
2021		2,345,679
Thereafter		3,024,702
Total	$	9,325,574