Suncore Joint Venture	9 Months Ended
Jun. 30, 2014
Equity Method Investments and Joint Ventures [Abstract]
Suncore Joint Venture	Suncore Joint Venture On July 30, 2010, we entered into a joint venture agreement with San'an Optoelectronics Co., Ltd. (San'an), for the purpose of engaging in the development, manufacturing, and distribution of CPV receivers, modules, and systems for terrestrial solar power applications under a technology license from us. The joint venture, Suncore Photovoltaic Technology Co., Ltd. (Suncore), is a limited liability company under the laws of the People's Republic of China ("PRC"). In June 2013, we entered into an agreement to transfer our 40% registered ownership interest in Suncore to San'an Optoelectronics Co., Ltd. ("San'an") for a purchase price of $4.8 million. Under the terms of the Transfer Agreement, each of the parties agreed to indemnify the other for any losses incurred as a result of either party's breach of its obligations under the Transfer Agreement. Closing was subject to customary conditions, including Chinese regulatory approvals. The payment for the purchase price was made upon the completion of the share transfer, which occurred in September 2013. Upon completion of the share transfer in September 2013, the Company recognized $3.3 million of deferred revenue from Suncore included in the financial statements as of June 30, 2013, as well as the resulting gain of $4.8 million on our registered ownership interest. In November 2011, we agreed to grant Suncore an exclusive license to use certain intellectual property and know-how, both existing and to-be-developed, related to the fabrication process and testing of terrestrial CPV solar cells on terrestrial CPV solar systems solely within the PRC, Hong Kong, Macau, and Taiwan (the licensed territory) and be able to use, market, and sell the terrestrial CPV solar cells worldwide, excluding only the United States. This licensing agreement was initially for $2.5 million and does not include intellectual property associated with the development of space qualified or radiation hardened solar cells. Suncore had not fulfilled all the requirements necessary to initiate payment for this license; as a result, we did not record any receivables from Suncore associated with this license agreement as of September 30, 2013. In October 2013, we amended the license agreement with Suncore that provides for the license agreement to be amended from $2.5 million to $0.8 million. In addition, we were only required to provide ongoing support through December 31, 2013 to Suncore. During the three months ended December 31, 2013, we received full payment from Suncore and recognized license revenue of $0.8 million related to the amendment. On August 5, 2012, we entered into a definitive agreement which consolidated the Company's terrestrial CPV system engineering and development efforts, for both ground mount and rooftop terrestrial CPV products, into Suncore. EMCORE employees who were engaged in terrestrial CPV product and business development, as well as key engineering, sales, and marketing personnel, were transferred to Suncore upon the closing of the agreement on September 21, 2012. Suncore funded all ongoing R&D, marketing, sales, and business development functions related to terrestrial CPV systems. We sold these assets for $2.8 million. EMCORE will continue to own all of its intellectual property related to solar cell technology and maintain investment activities to advance CPV solar cell performance to serve a broader customer base within the CPV industry. During the three months ended June 30, 2014 and 2013, we recorded revenue on sales to Suncore of $1.1 million and $3.8 million, respectively. During the nine months ended June 30, 2014 and 2013, we recorded revenue from Suncore of $2.0 million and $9.3 million, respectively. Included in prepaid expenses and other current assets as of June 30, 2014 and September 30, 2013, is $0.5 million and $0.3 million, respectively, for amounts due from Suncore related to transaction services provided in accordance with the August 2012 definitive agreement and other smaller amounts.

Suncore Joint Venture

On July 30, 2010, we entered into a joint venture agreement with San'an Optoelectronics Co., Ltd. (San'an), for the purpose of engaging in the development, manufacturing, and distribution of CPV receivers, modules, and systems for terrestrial solar power applications under a technology license from us. The joint venture, Suncore Photovoltaic Technology Co., Ltd. (Suncore), is a limited liability company under the laws of the People's Republic of China ("PRC"). In June 2013, we entered into an agreement to transfer our 40% registered ownership interest in Suncore to San'an Optoelectronics Co., Ltd. ("San'an") for a purchase price of $4.8 million. Under the terms of the Transfer Agreement, each of the parties agreed to indemnify the other for any losses incurred as a result of either party's breach of its obligations under the Transfer Agreement. Closing was subject to customary conditions, including Chinese regulatory approvals. The payment for the purchase price was made upon the completion of the share transfer, which occurred in September 2013. Upon completion of the share transfer in September 2013, the Company recognized $3.3 million of deferred revenue from Suncore included in the financial statements as of June 30, 2013, as well as the resulting gain of $4.8 million on our registered ownership interest.

In November 2011, we agreed to grant Suncore an exclusive license to use certain intellectual property and know-how, both existing and to-be-developed, related to the fabrication process and testing of terrestrial CPV solar cells on terrestrial CPV solar systems solely within the PRC, Hong Kong, Macau, and Taiwan (the licensed territory) and be able to use, market, and sell the terrestrial CPV solar cells worldwide, excluding only the United States. This licensing agreement was initially for $2.5 million and does not include intellectual property associated with the development of space qualified or radiation hardened solar cells. Suncore had not fulfilled all the requirements necessary to initiate payment for this license; as a result, we did not record any receivables from Suncore associated with this license agreement as of September 30, 2013. In October 2013, we amended the license agreement with Suncore that provides for the license agreement to be amended from $2.5 million to $0.8 million. In addition, we were only required to provide ongoing support through December 31, 2013 to Suncore. During the three months ended December 31, 2013, we received full payment from Suncore and recognized license revenue of $0.8 million related to the amendment.

On August 5, 2012, we entered into a definitive agreement which consolidated the Company's terrestrial CPV system engineering and development efforts, for both ground mount and rooftop terrestrial CPV products, into Suncore. EMCORE employees who were engaged in terrestrial CPV product and business development, as well as key engineering, sales, and marketing personnel, were transferred to Suncore upon the closing of the agreement on September 21, 2012. Suncore funded all ongoing R&D, marketing, sales, and business development functions related to terrestrial CPV systems. We sold these assets for $2.8 million. EMCORE will continue to own all of its intellectual property related to solar cell technology and maintain investment activities to advance CPV solar cell performance to serve a broader customer base within the CPV industry.

During the three months ended June 30, 2014 and 2013, we recorded revenue on sales to Suncore of $1.1 million and $3.8 million, respectively. During the nine months ended June 30, 2014 and 2013, we recorded revenue from Suncore of $2.0 million and $9.3 million, respectively.

Included in prepaid expenses and other current assets as of June 30, 2014 and September 30, 2013, is $0.5 million and $0.3 million, respectively, for amounts due from Suncore related to transaction services provided in accordance with the August 2012 definitive agreement and other smaller amounts.