Revenue Recognition Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

for the years ended December 31, 2019 and 2018:

	For the Year Ended December 31, 2019												For the Year Ended December 31, 2018
(in thousands)	Regulated Energy			Unregulated Energy			Other and Eliminations			Total			Regulated Energy			Unregulated Energy			Other and Eliminations			Total
Energy distribution
Delaware natural gas division	$	62,659		$	—		$	—		$	62,659		$	70,338		$	—		$	—		$	70,338
Florida natural gas division	28,485			—			—			28,485			25,341			—			—			25,341
FPU electric distribution	77,416			—			—			77,416			79,803			—			—			79,803
FPU natural gas distribution	82,418			—			—			82,418			81,118			—			—			81,118
Maryland natural gas division	22,517			—			—			22,517			24,172			—			—			24,172
Sandpiper natural gas/propane operations	19,068			—			—			19,068			22,088			—			—			22,088
Total energy distribution	292,563			—			—			292,563			302,860			—			—			302,860
Energy transmission
Aspire Energy	—			32,493			—			32,493			—			35,407			—			35,407
Eastern Shore	72,924			—			—			72,924			64,248			—			—			64,248
Peninsula Pipeline	16,453			—			—			16,453			11,927			—			—			11,927
Total energy transmission	89,377			32,493			—			121,870			76,175			35,407			—			111,582
Energy generation
Eight Flags	—			16,749			—			16,749			—			17,302			—			17,302
Propane operations
Propane delivery operations	—			107,964			—			107,964			—			123,603			—			123,603
Energy delivery services
Marlin Gas Services	—			5,702			—			5,702			—			121			—			121
Other and eliminations
Eliminations	(38,934		)	(10,407		)	(18,080		)	(67,421		)	(33,754		)	(16,486		)	(17,522		)	(67,762		)
Other	—			1,649			528			2,177			—			1,957			653			2,610
Total other and eliminations	(38,934		)	(8,758		)	(17,552		)	(65,244		)	(33,754		)	(14,529		)	(16,869		)	(65,152		)
Total operating revenues (1)	$	343,006		$	154,150		$	(17,552	)	$	479,604		$	345,281		$	161,904		$	(16,869	)	$	490,316

⁽¹⁾ Total operating revenues for the year ended December 31, 2019, include other revenue (revenues from sources other than contracts with customers) of $(0.1) million and $0.3 million for our Regulated and Unregulated Energy segments, respectively, and $0.2 million and $0.3 million for our Regulated and Unregulated Energy segments, respectively, for the year ended December 31, 2018. The sources of other revenues include revenue from alternative revenue programs related to revenue normalization for Maryland division and Sandpiper and late fees.

Contract with Customer, Asset and Liability [Table Text Block]

The balances of our trade receivables, contract assets, and contract liabilities as of December 31, 2019 and 2018 were as follows:

	Trade Receivables			Contract Assets (Noncurrent)		Contract Liabilities (Current)
(in thousands)
Balance at 12/31/2018	$	52,140		$	2,614	$	480
Balance at 12/31/2019	47,430			3,465		589
Increase (decrease)	$	(4,710	)	$	851	$	109

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

Revenue for these businesses for the remaining performance obligations at December 31, 2019 are expected to be recognized as follows:

(in thousands)	2020		2021		2022		2023		2024		2025 and thereafter
Eastern Shore and Peninsula Pipeline	$	37,307	$	34,000	$	27,034	$	21,608	$	19,385	$	194,868
Natural gas distribution operations	3,996		4,058		5,100		4,916		4,681		37,149
FPU electric distribution	566		566		566		566		566		1,100
Total revenue contracts with remaining performance obligations	$	41,869	$	38,624	$	32,700	$	27,090	$	24,632	$	233,117