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Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]  
Summary of Changes in Warranty Liability Changes to warranty liabilities were as follows ($000’s omitted):
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2020
 
2019
 
2020
 
2019
Warranty liabilities, beginning of period
$
88,395

 
$
79,747

 
$
91,389

 
$
79,154

Reserves provided
17,005

 
14,646

 
32,044

 
26,908

Payments
(15,914
)
 
(17,931
)
 
(34,189
)
 
(34,061
)
Other adjustments
(3,208
)
 
4,980

 
(2,966
)
 
9,441

Warranty liabilities, end of period
$
86,278

 
$
81,442

 
$
86,278

 
$
81,442
Summary of Changes in Self-Insurance Liability hanges in these liabilities were as follows ($000's omitted):
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2020
 
2019
 
2020
 
2019
Balance, beginning of period
$
719,172

 
$
729,170

 
$
709,798

 
$
737,013

Reserves provided
20,177

 
20,270

 
38,626

 
37,666

Adjustments to previously recorded reserves
(60,662
)
 
(12,763
)
 
(59,362
)
 
(16,638
)
Payments, net (a)
(38,673
)
 
(20,459
)
 
(49,048
)
 
(41,823
)
Balance, end of period
$
640,014

 
$
716,218

 
$
640,014

 
$
716,218


(a)
Includes net changes in amounts expected to be recovered from our insurance carriers, which are recorded in other assets (see below).
Schedule of Future Minimum Lease Payments Required Under Leases
The future minimum lease payments required under our leases as of June 30, 2020 were as follows ($000's omitted):
Years Ending December 31,
 
2020 (a)
$
10,603

2021
22,651

2022
20,755

2023
19,424

2024
13,755

Thereafter
28,687

Total lease payments (b)
115,875

Less: Interest (c)
17,762

Present value of lease liabilities (d)
$
98,113


(a)
Remaining payments are for the six months ending December 31, 2020.
(b)
Lease payments include options to extend lease terms that are reasonably certain of being exercised. There were $1.7 million of legally binding minimum lease payments for leases signed but not yet commenced at June 30, 2020.
(c)
Our leases do not provide a readily determinable implicit rate. Therefore, we must estimate our discount rate for such leases to determine the present value of lease payments at the lease commencement date.
(d)
The weighted average remaining lease term and weighted average discount rate used in calculating our lease liabilities were 5.6 years and 5.7%, respectively, at June 30, 2020.