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Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]  
Summary of Changes in Warranty Liability Changes to warranty liabilities were as follows ($000’s omitted):
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2019
 
2018
 
2019
 
2018
Warranty liabilities, beginning of period
$
81,442

 
$
72,169

 
$
79,154

 
$
72,709

Reserves provided
16,152

 
18,376

 
43,060

 
46,022

Payments
(19,573
)
 
(15,993
)
 
(53,634
)
 
(47,403
)
Other adjustments (a)
10,402

 
638

 
19,843

 
3,862

Warranty liabilities, end of period
$
88,423

 
$
75,190

 
$
88,423

 
$
75,190


Summary of Changes in Self-Insurance Liability Changes in these liabilities were as follows ($000's omitted):
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2019
 
2018
 
2019
 
2018
Balance, beginning of period
$
716,218

 
$
725,482

 
$
737,013

 
$
758,812

Reserves provided
21,892

 
24,106

 
59,558

 
67,001

Adjustments to previously recorded reserves
(1,700
)
 
(5,065
)
 
(18,338
)
 
(40,133
)
Payments, net (a)
(11,092
)
 
(18,026
)
 
(52,915
)
 
(59,183
)
Balance, end of period
$
725,318

 
$
726,497

 
$
725,318

 
$
726,497



(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 September 30, 2019 were as follows ($000's omitted):
Years Ending December 31,
 
2019 (a)
$
5,926

2020
21,539

2021
19,555

2022
18,011

2023
16,549

Thereafter
32,322

Total lease payments (b)
113,902

Less: Interest (c)
18,891

Present value of lease liabilities (d)
$
95,011


(a)
Remaining payments are for the three months ending December 31, 2019.
(b)
Lease payments include options to extend lease terms that are reasonably certain of being exercised. There were $5.9 million of legally binding minimum lease payments for leases signed but not yet commenced at September 30, 2019.
(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 6.1 years and 5.8%, respectively, at September 30, 2019.