Quarter ended September 30,

Nine months ended September 30,

2020

2019

2020

2019

(in thousands)

Balance at beginning of period

$

25,909

$

18,709

$

21,446

$

21,155

Provision for losses on loans sold:

Resulting from sales of loans

5,219

2,508

13,120

5,222

Reduction in liability due to change in estimate

(2,473)

(1,175)

(5,419)

(6,305)

Losses incurred, net

(151)

(74)

(643)

(104)

Balance at end of period

$

28,504

$

19,968

$

28,504

$

19,968

Unpaid principal balance of loans subject to representations and warranties at end of period

$

199,194,983

$

166,541,153