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Revenue Recognition Revenue Recognition (Notes) | 12 Months Ended
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Dec. 31, 2018
Revenue from Contract with Customer [Abstract] |
Revenue from Contract with Customer [Text Block] | R EVENUE R ECOGNITION We recognize revenue when our performance obligations under contracts with customers have been satisfied, which generally occurs when our businesses have delivered or transported natural gas, electricity or propane to customers. We exclude sales taxes and other similar taxes from the transaction price. Typically, our customers pay for the goods and/or services we provide in the month following the satisfaction of our performance obligation. The following table displays our revenue by major source based on product and service type for the twelve months ended December 31, 2018:
(in thousands) |  | Regulated Energy |  | Unregulated Energy |  | Other and Eliminations |  | Total
Energy distribution |  |  |  |  |  |  |  |
Delaware natural gas division |  | $ | 70,338 |  |  | $ | — |  |  | $ | — |  |  | $ | 70,338 |
Florida natural gas division |  | 25,341 |  |  | — |  |  | — |  |  | 25,341 |
FPU electric distribution |  | 79,803 |  |  | — |  |  | — |  |  | 79,803 |
FPU natural gas distribution |  | 81,118 |  |  | — |  |  | — |  |  | 81,118 |
Maryland natural gas division |  | 24,172 |  |  | — |  |  | — |  |  | 24,172 |
Sandpiper natural gas/propane operations |  | 22,088 |  |  | — |  |  | — |  |  | 22,088 |
Total energy distribution |  | 302,860 |  |  | — |  |  | — |  |  | 302,860 |
Energy transmission |  |  |  |  |  |  |  |
Aspire Energy |  | — |  |  | 35,407 |  |  | — |  |  | 35,407 |
Eastern Shore |  | 64,248 |  |  | — |  |  | — |  |  | 64,248 |
Peninsula Pipeline |  | 11,927 |  |  | — |  |  | — |  |  | 11,927 |
Total energy transmission |  | 76,175 |  |  | 35,407 |  |  | — |  |  | 111,582 |
Energy generation |  |  |  |  |  |  |  |
Eight Flags |  | — |  |  | 17,302 |  |  | — |  |  | 17,302 |
Propane operations |  |  |  |  |  |  |  |
Mid-Atlantic propane operations |  | — |  |  | 102,321 |  |  | — |  |  | 102,321 |
Florida propane operations |  | — |  |  | 21,282 |  |  | — |  |  | 21,282 |
Total propane operations |  | — |  |  | 123,603 |  |  | — |  |  | 123,603 |
Energy services |  |  |  |  |  |  |  |
Marlin Gas Services |  | — |  |  | 121 |  |  | — |  |  | 121 |
PESCO - Natural Gas Marketing |  | — |  |  | 258,713 |  |  | — |  |  | 258,713 |
|  | — |  |  | 258,834 |  |  | — |  |  | 258,834 |
Other and eliminations |  |  |  |  |  |  |  |
Eliminations |  | (33,754 | ) |  | (16,486 | ) |  | (49,062 | ) |  | (99,302 | )
Other |  | — |  |  | 1,957 |  |  | 653 |  |  | 2,610 |
Total other and eliminations |  | (33,754 | ) |  | (14,529 | ) |  | (48,409 | ) |  | (96,692 | )
Total operating revenues (1) |  | $ | 345,281 |  |  | $ | 420,617 |  |  | $ | (48,409 | ) |  | $ | 717,489 |
(1) Includes other revenue (revenues from sources other than contracts with customers) of $236,000 and $334,000 for our Regulated and Unregulated Energy segments, respectively. The sources of other revenues include revenue from alternative revenue programs related to revenue normalization for Maryland division and Sandpiper and late fees. Regulated Energy Segment The businesses within our Regulated Energy segment are regulated utilities whose operations and customer contracts are subject to rates approved by the respective state PSC or the FERC. Our energy distribution operations deliver natural gas or electricity to customers, and we bill the customers for both the delivery of natural gas or electricity and the related commodity, where applicable. In most jurisdictions, our customers are also required to purchase the commodity from us, although certain customers in some jurisdictions may purchase the commodity from a third-party retailer (in which case we provide delivery service only). We consider the delivery of natural gas or electricity and/or the related commodity sale as one performance obligation because the commodity and its delivery are highly interrelated with two-way dependency on one another. Our performance obligation is satisfied over time as natural gas or electricity is delivered and consumed by the customer. We recognize revenues based on monthly meter readings, which are based on the quantity of natural gas or electricity used and the approved rates. We accrue unbilled revenues for natural gas and electricity that have been delivered, but not yet billed, at the end of an accounting period, to the extent that billing and delivery do not coincide. Revenues for Eastern Shore are based on rates approved by the FERC. The FERC has also authorized Eastern Shore to negotiate rates above or below the FERC-approved maximum rates, which customers can elect as an alternative to the FERC-approved maximum rates. Eastern Shore's services can be firm or interruptible. Firm services are offered on a guaranteed basis and are available at all times unless prevented by force majeure or other permitted curtailments. Interruptible customers receive service only when there is available capacity or supply. Our performance obligation is satisfied over time as we deliver natural gas to the customers' locations. We recognize revenues based on capacity used or reserved and the fixed monthly charge. Peninsula Pipeline is engaged in natural gas intrastate transmission to third-party customers and certain affiliates in the State of Florida. Our performance obligation is satisfied over time as the natural gas is transported to customers. We recognize revenue based on rates approved by the Florida PSC and the capacity used or reserved. We accrue unbilled revenues for transportation services provided and not yet billed at the end of an accounting period. Unregulated Energy Segment Revenues generated from the Unregulated Energy segment are not subject to any federal, state, or local pricing regulations. Aspire Energy primarily sources gas from hundreds of conventional producers and performs gathering and processing functions to maintain the quality and reliability of its gas for its wholesale customers. Aspire Energy's performance obligation is satisfied over time as natural gas is delivered to its customers. Aspire Energy recognizes revenue based on the deliveries of natural gas at contractually agreed upon rates (which are based upon an established monthly index price and a monthly operating fee, as applicable). For natural gas customers, we accrue unbilled revenues for natural gas that has been delivered, but not yet billed, at the end of an accounting period, to the extent that billing and delivery do not coincide with the end of the accounting period. Eight Flags' CHP plant, which is located on land leased from a customer, produces three sources of energy: electricity, steam and heated water. Rayonier purchases the steam (unfired and fired) and heated water, which are used in the customer’s production facility. Our electric distribution operation purchases the electricity generated by the CHP plant for distribution to its customers. Eight Flags' performance obligation is satisfied over time as deliveries of heated water, steam and electricity occur. Eight Flags recognizes revenues over time based on the amount of heated water, steam and electricity generated and delivered to its customers. For our propane operations, we recognize revenue based upon customer type and service offered. Generally, for propane bulk delivery customers (customers without meters) and wholesale sales, our performance obligation is satisfied when we deliver propane to the customers' locations (point-in-time basis). We recognize revenue from these customers based on the number of gallons delivered and the price per gallon at the point-in-time of delivery. For our propane delivery customers with meters, we satisfy our performance obligation over time when we deliver propane to customers. We recognize revenue over time based on the amount of propane consumed and the applicable price per unit. For propane delivery metered customers, we accrue unbilled revenues for propane that has been delivered, but not yet billed, at the end of an accounting period, to the extent that billing and delivery do not coincide with the end of the accounting period. PESCO provides natural gas supply and asset management services to customers (including affiliates of Chesapeake Utilities) located primarily in Florida, the Delmarva Peninsula, and the Appalachian Basin. PESCO's performance obligation is satisfied over time as natural gas is delivered to its customers. PESCO recognizes revenue over time based on monthly customer meter readings. We accrue unbilled revenues for natural gas that has been delivered, but not yet billed, at the end of an accounting period. Contract balances The timing of revenue recognition, customer billings and cash collections results in trade receivables, unbilled receivables (contract assets), and customer advances (contract liabilities) in our consolidated balance sheets. The balances of our trade receivables, contract assets, and contract liabilities as of December 31, 2018 and 2017 were as follows:
|  | Trade Receivables |  | Contract Assets (Non-current) |  | Contract Liabilities (Current)
(in thousands) |  |  |  |  |  |
Balance at 12/31/2017 |  | $ | 74,962 |  |  | $ | 1,270 |  |  | $ | 407 |
Balance at 12/31/2018 |  | 83,214 |  |  | 2,614 |  |  | 480 |
Increase (decrease) |  | $ | 8,252 |  |  | $ | 1,344 |  |  | $ | 73 |
Our trade receivables are included in accounts receivable in the consolidated balance sheets. Our non-current contract assets are included in receivables and other deferred charges in the consolidated balance sheet and relate to operations and maintenance costs incurred by Eight Flags that have not yet been recovered through rates for the sale of electricity to our electric distribution operation pursuant to a long-term service agreement. At times, we receive advances or deposits from our customers before we satisfy our performance obligation, resulting in contract liabilities. At December 31, 2018 and 2017, we had a contract liability of $480,000 and $407,000, respectively, which was included in other accrued liabilities in the consolidated balance sheet, and which relates to non-refundable prepaid fixed fees for our Mid-Atlantic propane operation's retail offerings. Our performance obligation is satisfied over the term of the respective retail offering plan on a ratable basis. For the twelve months ended December 31, 2018, we recognized revenue of $697,000. Remaining performance obligations Our businesses have long-term fixed fee contracts with customers in which revenues are recognized as performance obligations are satisfied over the contract term. Revenue for these businesses for the remaining performance obligations at December 31, 2018 are expected to be recognized as follows:
(in thousands) | 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 and thereafter
Eastern Shore and Peninsula Pipeline | $ | 38,505 |  |  | $ | 36,768 |  |  | $ | 33,510 |  |  | $ | 26,566 |  |  | $ | 21,146 |  |  | $ | 212,620 |
Natural gas distribution operations | 4,109 |  |  | 3,586 |  |  | 3,358 |  |  | 3,320 |  |  | 2,924 |  |  | 30,826 |
PESCO - Natural Gas Marketing | 8,886 |  |  | 4,702 |  |  | 1,728 |  |  | 23 |  |  | — |  |  | — |
FPU electric distribution | 297 |  |  | 297 |  |  | 297 |  |  | 109 |  |  | — |  |  | — |
Total revenue contracts with remaining performance obligations | $ | 51,797 |  |  | $ | 45,353 |  |  | $ | 38,893 |  |  | $ | 30,018 |  |  | $ | 24,070 |  |  | $ | 243,446 |
Practical expedients For our businesses with agreements that contain variable consideration, we use the invoice practical expedient method. We determined that the amounts invoiced to customers correspond directly with the value to our customers and our performance to date.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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