Debt (Tables)

3 Months Ended

Mar. 31, 2017

Our debt consists of the following (in thousands):



	March 31, 2017		December 31, 2016
Debt payable, net to 2038 ⁽¹⁾	$	2,004,422	$	2,023,403
Unsecured notes payable under credit facilities	230,900		245,000
Debt service guaranty liability	67,125		67,125
Obligations under capital leases	21,000		21,000
Total	$	2,323,447	$	2,356,528

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(1)	At March 31, 2017, interest rates ranged from 2.3% to 7.9% at a weighted average rate of 3.9%. At December 31, 2016, interest rates ranged from 1.7% to 7.9% at a weighted average rate of 4.0%.

Grouping Of Debt Between Fixed And Variable As Well As Secured And Unsecured

The allocation of total debt between fixed and variable-rate as well as between secured and unsecured is summarized below (in thousands):



	March 31, 2017		December 31, 2016
As to interest rate (including the effects of interest rate contracts):
Fixed-rate debt	$	2,070,858	$	2,089,769
Variable-rate debt	252,589		266,759
Total	$	2,323,447	$	2,356,528
As to collateralization:
Unsecured debt	$	1,899,837	$	1,913,399
Secured debt	423,610		443,129
Total	$	2,323,447	$	2,356,528

Schedule Of Credit Facilities

The following table discloses certain information regarding our unsecured notes payable under our credit facilities (in thousands, except percentages):



	March 31, 2017			December 31, 2016
Unsecured revolving credit facility:
Balance outstanding	$	226,000		$	245,000
Available balance	268,386			250,140
Letters of credit outstanding under facility	5,614			4,860
Variable interest rate (excluding facility fee)	1.7		%	1.5		%
Unsecured short-term facility:
Balance outstanding	$	4,900		$	—
Variable interest rate (excluding facility fee)	2.3		%	—		%
Both facilities:
Maximum balance outstanding during the period	$	245,000		$	372,000
Weighted average balance	211,034			141,017
Year-to-date weighted average interest rate (excluding facility fee)	1.6		%	1.3		%

Principal Payments Of Debt

Scheduled principal payments on our debt (excluding $230.9 million unsecured notes payable under our credit facilities, $21.0 million of certain capital leases, $(5.9) million net premium/(discount) on debt, $(10.1) million of deferred debt costs, $4.9 million of non-cash debt-related items, and $67.1 million debt service guaranty liability) are due during the following years (in thousands):



2017 remaining	$	67,268
2018	80,427
2019	56,245
2020	237,779
2021	17,667
2022	307,614
2023	305,694
2024	255,954
2025	303,302
2026	277,291
Thereafter	106,316
Total	$	2,015,557