Amount of amortization expense attributable to debt issuance costs.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Secured Financing Agreements - Principal Repayments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Secured financing agreements
Repayment of secured financings
2019 (remainder of)	$ 277,478		$ 277,478
2020	1,003,331		1,003,331
2021	2,202,418		2,202,418
2022	1,454,349		1,454,349
2023	2,320,116		2,320,116
Thereafter	2,101,918		2,101,918
Total	9,359,610		9,359,610		$ 8,761,624
Amortization of deferred financing costs from secured financing agreements included in interest expense	8,100	$ 5,800	16,800	$ 10,900
Repurchase Agreements
Repayment of secured financings
2019 (remainder of)	97,607		97,607
2020	824,360		824,360
2021	1,379,216		1,379,216
2022	760,605		760,605
2023	1,753,224		1,753,224
Thereafter	627,613		627,613
Total	5,442,625		5,442,625
Other Secured Financing
Repayment of secured financings
2019 (remainder of)	179,871		179,871
2020	178,971		178,971
2021	823,202		823,202
2022	693,744		693,744
2023	566,892		566,892
Thereafter	1,474,305		1,474,305
Total	$ 3,916,985		$ 3,916,985