Revenues (Tables)

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregated Revenue

The following table discloses revenue by primary geographical market, customer type, and customer credit risk profile (in thousands). The table also includes a reconciliation of the disaggregated revenue to revenue by reportable segment (in thousands).

	Reportable Segments
	Three Months Ended March 31, 2021						Three Months Ended March 31, 2020
	Retail Electricity		Retail Natural Gas		Total Reportable Segments		Retail Electricity		Retail Natural Gas		Total Reportable Segments
Primary markets (a)
New England	$	26,241	$	4,377	$	30,618	$	46,593	$	7,054	$	53,647
Mid-Atlantic	28,550		13,455		42,005		45,842		15,804		61,646
Midwest	11,059		10,238		21,297		14,989		13,607		28,596
Southwest	12,905		6,320		19,225		14,344		8,127		22,471
	$	78,755	$	34,390	$	113,145	$	121,768	$	44,592	$	166,360
Customer type
Commercial	$	15,216	$	11,516	$	26,732	$	40,015	$	15,517	$	55,532
Residential	73,272		26,490		99,762		93,228		33,363		126,591
Unbilled revenue (b)	(9,733)		(3,616)		(13,349)		(11,475)		(4,288)		(15,763)
	$	78,755	$	34,390	$	113,145	$	121,768	$	44,592	$	166,360
Customer credit risk
POR	$	50,850	$	19,600	$	70,450	$	84,913	$	23,037	$	107,950
Non-POR	27,905		14,790		42,695		36,855		21,555		58,410
	$	78,755	$	34,390	$	113,145	$	121,768	$	44,592	$	166,360

(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.

Accounts Receivable, Allowance for Credit Loss

A rollforward of our allowance for credit losses for the three months ended March 31, 2021 are presented in the table below (in thousands):

Balance at December 31, 2020	$	(3,942)
Current period bad debt provision	490
Write-offs	934
Recovery of previous write offs	(180)
Balance at March 31, 2021	$	(2,698)