Quarter ended September 30,

Nine Months ended September 30,

($ in thousands)

2021

2020

2021

2020

Balance at beginning of period

$

18,300

$

21,000

$

21,000

$

6,400

Cumulative effect adjustment1

—

1,058

Balance at beginning of period, as adjusted

$

18,300

$

21,000

$

21,000

$

7,458

Current period provision for expected credit losses

180

802

1,721

16,369

Write-offs charged against the allowance for credit losses

(2,154)

(996)

(6,554)

(3,272)

Recoveries

174

194

333

445

Allowance for credit losses, end of period

$

16,500

$

21,000

$

16,500

$

21,000