The first mortgages and other loans payable collateralized by the respective properties and assignment of leases or debt investments at March 31, 2018 and December 31, 2017, respectively, were as follows (amounts in thousands):



Property	Maturity Date	Interest Rate ⁽¹⁾			March 31, 2018			December 31, 2017
Fixed Rate Debt:
Unsecured Loan	June 2018		4.81	%	$	16,000		$	16,000
One Madison Avenue	May 2020		5.91	%	477,843			486,153
762 Madison Avenue	February 2022		5.00	%	771			771
100 Church Street	July 2022		4.68	%	216,240			217,273
420 Lexington Avenue	October 2024		3.99	%	300,000			300,000
400 East 58th Street ⁽²⁾	November 2026		3.00	%	40,000			40,000
Landmark Square	January 2027		4.90	%	100,000			100,000
485 Lexington Avenue	February 2027		4.25	%	450,000			450,000
1080 Amsterdam ⁽³⁾	February 2027		3.58	%	36,300			36,363
315 West 33rd Street	February 2027		4.17	%	250,000			250,000
Series J Preferred Units ⁽⁴⁾	April 2051		3.75	%	4,000			4,000
919 Third Avenue ⁽⁵⁾					—			500,000
Total fixed rate debt					$	1,891,154		$	2,400,560
Floating Rate Debt:
183, 187 Broadway & 5-7 Dey Street	May 2018	L+	2.70	%	$	58,000		$	58,000
2017 Master Repurchase Agreement	June 2018	L+	2.23	%	189,883			90,809
719 Seventh Avenue	February 2019	L+	3.05	%	42,143			41,622
220 East 42nd Street	October 2020	L+	1.60	%	275,000			275,000
Total floating rate debt					$	565,026		$	465,431
Total fixed rate and floating rate debt					$	2,456,180		$	2,865,991
Mortgages reclassed to liabilities related to assets held for sale					—			—
Total mortgages and other loans payable					$	2,456,180		$	2,865,991
Deferred financing costs, net of amortization					(22,186		)	(28,709		)
Total mortgages and other loans payable, net					$	2,433,994		$	2,837,282


(1)	Interest rate as of March 31, 2018, taking into account interest rate hedges in effect during the period. Floating rate debt is presented with the stated interest rate spread over 30-day LIBOR, unless otherwise specified.


(2)	The loan carries a fixed interest rate of 300 basis points for the first five years and is prepayable without penalty at the end of year five.


(3)	The loan is comprised of a $35.5 million mortgage loan and $0.9 million subordinate loan with a fixed interest rate of 350 basis points and 700 basis points, respectively, for the first five years and is prepayable without penalty at the end of year five.

(4)

In connection with the acquisition of a commercial real estate property, the Operating Partnership issued $4.0 million, 3.75% Series J Preferred Units of limited partnership interest, or the Series J Preferred Units, with a mandatory liquidation preference of $1,000 per unit. The Series J Preferred Units are accounted for as debt because they can be redeemed in cash by the Operating Partnership on the earlier of (i) the date of the sale of the property or (ii) April 30, 2051 or at the option of the unitholders as provided for in the related agreement.


(5)	Our investment in the property was deconsolidated as of January 1, 2018. See Note 6, "Investments in Unconsolidated Joint Ventures".