Allowance for Expected Credit Losses (Tables)

3 Months Ended

Mar. 31, 2022

Allowance for Expected Credit Losses

Accounts receivable, net of allowance for expected credit losses

		At and For the				At and For the
		Three Months Ended March 31, 2022				Three Months Ended March 31, 2021
		Accounts Receivable Net of Allowance for Expected Credit Losses		Allowance for Expected Credit Losses		Accounts Receivable Net of Allowance for Expected Credit Losses		Allowance for Expected Credit Losses
Balance, beginning of period	$	170,953	$	1,808	$	179,147	$	1,754
Current period change for expected credit losses				401				1,768
Writeoffs of uncollectable accounts receivable				(476)				(1,338)
Balance, end of period	$	167,096	$	1,733	$	170,915	$	2,184