Revenues (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregated Revenue

The table also includes a reconciliation of the disaggregated revenue to revenue by reportable segment (in thousands).

Reportable Segments
	Year Ended December 31, 2021						Year Ended December 31, 2020						Year Ended December 31, 2019
	Retail Electricity		Retail Natural Gas		Total Reportable Segments		Retail Electricity		Retail Natural Gas		Total Reportable Segments		Retail Electricity		Retail Natural Gas		Total Reportable Segments
Primary markets (a)
New England	$	100,819	$	9,402	$	110,221	$	166,982	$	14,846	$	181,828	$	284,909	$	19,289	$	304,198
Mid-Atlantic	107,307		28,070		135,377		166,157		32,769		198,926		242,556		42,469		285,025
Midwest	41,974		20,602		62,576		57,314		26,368		83,682		79,188		39,200		118,388
Southwest	72,494		17,060		89,554		70,940		20,171		91,111		81,798		21,545		103,343
	$	322,594	$	75,134	$	397,728	$	461,393	$	94,154	$	555,547	$	688,451	$	122,503	$	810,954
Customer type
Commercial	$	49,159	$	25,610	$	74,769	$	128,874	$	31,205	$	160,079	$	249,730	$	40,466	$	290,196
Residential	280,065		49,483		329,548		341,382		66,305		407,687		449,900		83,455		533,355
Unbilled revenue (b)	(6,630)		41		(6,589)		(8,863)		(3,356)		(12,219)		(11,179)		(1,418)		(12,597)
	$	322,594	$	75,134	$	397,728	$	461,393	$	94,154	$	555,547	$	688,451	$	122,503	$	810,954
Customer credit risk
POR	$	195,120	$	40,541	$	235,661	$	308,010	$	47,470	$	355,480	$	479,011	$	64,416	$	543,427
Non-POR	127,474		34,593		162,067		153,383		46,684		200,067		209,440		58,087		267,527
	$	322,594	$	75,134	$	397,728	$	461,393	$	94,154	$	555,547	$	688,451	$	122,503	$	810,954

(a) The primary markets include the following states:

•New England - Connecticut, Maine, Massachusetts, New Hampshire;

•Mid-Atlantic - Delaware, Maryland (including the District of Colombia), New Jersey, New York and Pennsylvania;

•Midwest - Illinois, Indiana, Michigan and Ohio; and

•Southwest - Arizona, California, Colorado, Florida, Nevada, and Texas.

(b) Unbilled revenue is recorded in total until it is actualized, at which time it is categorized between commercial and residential customers.

Schedule of Accounts Receivable, Allowance for Credit Loss

A rollforward of our allowance for credit losses for the year ended December 31, 2021 is presented in the table below (in thousands):

Balance at December 31, 2020	$	(3,942)
Bad debt provision	(205)
Write-offs	2,192
Recovery of previous write offs	(413)
Balance at December 31, 2021	$	(2,368)