Commitments And Contingencies	9 Months Ended
Sep. 30, 2016
Commitments And Contingencies [Abstract]
Commitments And Contingencies	10. COMMITMENTS AND CONTINGENCIES Contingencies Chugach is a participant in various legal actions, rate disputes, personnel matters and claims both for and against Chugach’s interests. Management believes the outcome of any such matters will not materially impact Chugach’s financial condition, results of operations or liquidity. Chugach establishes reserves when a particular contingency is probable and calculable. Chugach has not accrued for any contingency at September 30, 2016, as it does not consider any contingency to be probable nor calculable. Chugach faces contingencies that are reasonably possible to occur; however, they cannot currently be estimated. Concentrations Approximately 70 percent of Chugach’s employees are members of the IBEW. Chugach has three CBA’s with the IBEW. Chugach also has an agreement with the HERE. All three IBEW CBA’s have been renewed through June 30, 2017. The HERE contract was renewed through June 30, 2016. This contract will remain in effect until negotiations conclude, which are currently scheduled for the fourth quarter of 2016. Chugach was the principal supplier of power under an Interim Power Sales Agreement with MEA. Including the fuel component, this contract represented $26.2 million of sales revenue through its expiration on April 30, 2015. Commitments Fuel Supply Contracts Chugach has fuel supply contracts with various producers at market terms. A gas supply contract between Chugach and ConocoPhillips Alaska, Inc. and ConocoPhillips, Inc. (collectively “ConocoPhillips”), was approved by the RCA effective August 21, 2009. This contract began providing gas in 2010 and will terminate December 31, 2016. The total amount of gas under this contract is estimated to be 62 Bcf. This contract was assumed by Chugach and ML&P as part of the BRU acquisition, on the basis of ownership share. As such, Chugach pays ML&P for 70% of gas purchased under this contract. Chugach entered into a gas contract with Hilcorp effective January 1, 2015, to provide gas through March 31, 2018. On September 15, 2014, the RCA approved an amendment to the Hilcorp gas purchase agreement extending gas delivery and subsequently filling 100 percent of Chugach’s needs through March 31, 2019. On September 8, 2015, the RCA approved another amendment to the Hilcorp gas purchase agreement extending the term of the agreement, thus filling up to 100 percent of Chugach’s needs through March 31, 2023. The total amount of gas under this contract is estimated to be 60 Bcf. All of the production is expected to come from Cook Inlet, Alaska. The terms of the ML&P (previously under ConocoPhillips) and Hilcorp agreements require Chugach to manage the natural gas transportation over the connecting pipeline systems. Chugach has gas transportation agreements with ENSTAR Natural Gas Company (ENSTAR) and Hilcorp. Patronage Capital In 2007, Chugach entered into an agreement with HEA to return all of its patronage capital within five years after expiration of its power sales agreement, which was December 31, 2013. This patronage capital retirement was related to a settlement agreement associated with the 2005 Test Year General Rate Case (Docket U-06-134) and accepted by the RCA on August 7, 2007. HEA’s patronage capital was $7.9 million at September 30, 2016, and December 31, 2015, and is classified as patronage capital payable on Chugach’s balance sheet. In an agreement reached in May 2014 with MEA, capital credits retired to MEA are classified as patronage capital payable on Chugach’s balance sheet. MEA’s patronage capital payable was $3.2 million at September 30, 2016, and December 31, 2015. Legal Proceedings Chugach has certain litigation matters and pending claims that arise in the ordinary course of Chugach’s business. In the opinion of management, none of these matters, individually or in the aggregate, is or are likely to have a material adverse effect on Chugach’s results of operations, financial condition or cash flows.

10. COMMITMENTS AND CONTINGENCIES

Contingencies

Chugach is a participant in various legal actions, rate disputes, personnel matters and claims both for and against Chugach’s interests. Management believes the outcome of any such matters will not materially impact Chugach’s financial condition, results of operations or liquidity. Chugach establishes reserves when a particular contingency is probable and calculable. Chugach has not accrued for any contingency at September 30, 2016, as it does not consider any contingency to be probable nor calculable. Chugach faces contingencies that are reasonably possible to occur; however, they cannot currently be estimated.

Concentrations

Approximately 70 percent of Chugach’s employees are members of the IBEW. Chugach has three CBA’s with the IBEW. Chugach also has an agreement with the HERE. All three IBEW CBA’s have been renewed through June 30, 2017. The HERE contract was renewed through June 30, 2016. This contract will remain in effect until negotiations conclude, which are currently scheduled for the fourth quarter of 2016.

Chugach was the principal supplier of power under an Interim Power Sales Agreement with MEA. Including the fuel component, this contract represented $26.2 million of sales revenue through its expiration on April 30, 2015.

Commitments

Fuel Supply Contracts

Chugach has fuel supply contracts with various producers at market terms. A gas supply contract between Chugach and ConocoPhillips Alaska, Inc. and ConocoPhillips, Inc. (collectively “ConocoPhillips”), was approved by the RCA effective August 21, 2009. This contract began providing gas in 2010 and will terminate December 31, 2016. The total amount of gas under this contract is estimated to be 62 Bcf. This contract was assumed by Chugach and ML&P as part of the BRU acquisition, on the basis of ownership share. As such, Chugach pays ML&P for 70% of gas purchased under this contract. Chugach entered into a gas contract with Hilcorp effective January 1, 2015, to provide gas through March 31, 2018. On September 15, 2014, the RCA approved an amendment to the Hilcorp gas purchase agreement extending gas delivery and subsequently filling 100 percent of Chugach’s needs through March 31, 2019. On September 8, 2015, the RCA approved another amendment to the Hilcorp gas purchase agreement extending the term of the agreement, thus filling up to 100 percent of Chugach’s needs through March 31, 2023. The total amount of gas under this contract is estimated to be 60 Bcf. All of the production is expected to come from Cook Inlet, Alaska. The terms of the ML&P (previously under ConocoPhillips) and Hilcorp agreements require Chugach to manage the natural gas transportation over the connecting pipeline systems. Chugach has gas transportation agreements with ENSTAR Natural Gas Company (ENSTAR) and Hilcorp.

Patronage Capital

In 2007, Chugach entered into an agreement with HEA to return all of its patronage capital within five years after expiration of its power sales agreement, which was December 31, 2013. This patronage capital retirement was related to a settlement agreement associated with the 2005 Test Year General Rate Case (Docket U-06-134) and accepted by the RCA on August 7, 2007. HEA’s patronage capital was $7.9 million at September 30, 2016, and December 31, 2015, and is classified as patronage capital payable on Chugach’s balance sheet.

In an agreement reached in May 2014 with MEA, capital credits retired to MEA are classified as patronage capital payable on Chugach’s balance sheet. MEA’s patronage capital payable was $3.2 million at September 30, 2016, and December 31, 2015.

Legal Proceedings

Chugach has certain litigation matters and pending claims that arise in the ordinary course of Chugach’s business. In the opinion of management, none of these matters, individually or in the aggregate, is or are likely to have a material adverse effect on Chugach’s results of operations, financial condition or cash flows.