Debt (Tables)

6 Months Ended

Jun. 30, 2018

Our debt consists of the following (in thousands):



	June 30, 2018		December 31, 2017
Debt payable, net to 2038 ⁽¹⁾	$	1,742,036	$	1,996,007
Debt service guaranty liability	64,145		64,145
Obligations under capital leases	21,000		21,000
Total	$	1,827,181	$	2,081,152

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(1)	At June 30, 2018, interest rates ranged from 3.3% to 7.0% at a weighted average rate of 4.0%. At December 31, 2017, interest rates ranged from 2.6% 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):



	June 30, 2018		December 31, 2017
As to interest rate (including the effects of interest rate contracts):
Fixed-rate debt	$	1,809,393	$	2,063,263
Variable-rate debt	17,788		17,889
Total	$	1,827,181	$	2,081,152
As to collateralization:
Unsecured debt	$	1,454,768	$	1,667,462
Secured debt	372,413		413,690
Total	$	1,827,181	$	2,081,152

Schedule Of Credit Facilities

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



	June 30, 2018			December 31, 2017
Unsecured revolving credit facility:
Balance outstanding	$	—		$	—
Available balance	497,946			493,610
Letters of credit outstanding under facility	2,054			6,390
Variable interest rate (excluding facility fee)	—		%	—		%
Unsecured short-term facility:
Balance outstanding	$	—		$	—
Variable interest rate (excluding facility fee)	—		%	—		%
Both facilities:
Maximum balance outstanding during the period	$	26,500		$	245,000
Weighted average balance	2,070			133,386
Year-to-date weighted average interest rate (excluding facility fee)	2.8		%	1.8		%

Principal Payments Of Debt

Scheduled principal payments on our debt (excluding $21.0 million of certain capital leases, $(5.0) million net premium/(discount) on debt, $(7.6) million of deferred debt costs, $2.0 million of non-cash debt-related items, and $64.1 million debt service guaranty liability) are due during the following years (in thousands):



2018 remaining	$	63,328
2019	55,319
2020	5,296
2021	18,434
2022	307,922
2023	347,815
2024	252,153
2025	293,807
2026	277,291
2027	38,288
Thereafter	93,024
Total	$	1,752,677