Organization and Limited Liability Company Matters	9 Months Ended
Sep. 30, 2019
Organization and Limited Liability Company Matters [Abstract]
Organization and Limited Liability Company Matters	1. Organization and Limited Liability Company matters: ATEL 17, LLC (the “Company” or the “Fund”) was formed under the laws of the state of California on April 16, 2015 for the purpose of raising capital and originating equipment financing transactions and acquiring equipment to engage in equipment leasing and sales activities. The Managing Member of the Company is ATEL Managing Member, LLC (the “Managing Member” or the “Manager”), a Nevada limited liability corporation. The Managing Member is controlled by ATEL Financial Services, LLC (“AFS”), a wholly-owned subsidiary of ATEL Capital Group (“ACG” or “ATEL”). The Fund may continue until terminated as provided in the ATEL 17, LLC limited liability company operating agreement dated April 24, 2015 (the “Operating Agreement”). Contributions in the amount of $500 were received as of April 28, 2015, which represented the initial member’s capital investment. As a limited liability company, the liability of any individual member for the obligations of the Fund is limited to the extent of capital contributions to the Fund by the individual member. The offering of the Company was granted effectiveness by the Securities and Exchange Commission as of January 5, 2016. The offering will continue until the earlier of a period of two years from that date or until sales of the limited liability company units (Units) to the public reach $150 million. As of February 2, 2016, subscriptions for the minimum number of Units (120,000, representing $1.2 million), excluding subscriptions from Pennsylvania investors, had been received and the Fund requested subscription proceeds to be released from escrow. On that date, the Company commenced initial operations. Pennsylvania subscriptions are subject to a separate escrow and are released to the Fund only at such time as total subscription proceeds received by the Fund from all subscribers, including the escrowed Pennsylvania subscriptions, equal not less than $7.5 million in gross proceeds. Total contributions to the Fund exceeded $7.5 million on July 6, 2016. The offering was terminated on January 5, 2018. As of September 30, 2019, cumulative gross contributions, less rescissions and repurchases (net of distributions paid and allocated syndication costs, as applicable) totaling $25.7 million have been received, inclusive of the $500 initial member’s capital investment. Through the same date, a net total of $151 thousand of such contributions (representing 20,000 Units) have been rescinded or repurchased (net of distributions paid and allocated syndication costs) by the Company. As of September 30, 2019, a total of 2,565,749 Units were issued and outstanding. The Fund, or Managing Member on behalf of the Fund had incurred costs in connection with the organization, registration and issuance of the Units. The amount of such costs borne by the Fund was limited by certain provisions of the Operating Agreement. The Company’s principal objectives are to invest in a diversified portfolio of investments that will generate a favorable overall return to investors and (i) preserve, protect and return the Fund’s invested capital; (ii) generate regular cash distributions to Unit holders during the Offering Stage and Operating Stage of the Fund, with any balance remaining after required minimum distributions, equal to not less than 8% nor more than 10% per annum on investors’ Original Invested Capital, to be used to purchase additional investments during the first six years after the year the offering terminates; and (iii) provide additional cash distributions during the Liquidating Stage, commencing with the end of the six year reinvestment period and continuing until all investment portfolio assets have been sold or otherwise disposed. These unaudited interim financial statements should be read in conjunction with the financial statements and notes thereto contained in the report on Form 10‑K for the year ended December 31, 2018, filed with the Securities and Exchange Commission.

1. Organization and Limited Liability Company matters:

ATEL 17, LLC (the “Company” or the “Fund”) was formed under the laws of the state of California on April 16, 2015 for the purpose of raising capital and originating equipment financing transactions and acquiring equipment to engage in equipment leasing and sales activities. The Managing Member of the Company is ATEL Managing Member, LLC (the “Managing Member” or the “Manager”), a Nevada limited liability corporation. The Managing Member is controlled by ATEL Financial Services, LLC (“AFS”), a wholly-owned subsidiary of ATEL Capital Group (“ACG” or “ATEL”). The Fund may continue until terminated as provided in the ATEL 17, LLC limited liability company operating agreement dated April 24, 2015 (the “Operating Agreement”). Contributions in the amount of $500 were received as of April 28, 2015, which represented the initial member’s capital investment. As a limited liability company, the liability of any individual member for the obligations of the Fund is limited to the extent of capital contributions to the Fund by the individual member.

The offering of the Company was granted effectiveness by the Securities and Exchange Commission as of January 5, 2016. The offering will continue until the earlier of a period of two years from that date or until sales of the limited liability company units (Units) to the public reach $150 million. As of February 2, 2016, subscriptions for the minimum number of Units (120,000, representing $1.2 million), excluding subscriptions from Pennsylvania investors, had been received and the Fund requested subscription proceeds to be released from escrow. On that date, the Company commenced initial operations. Pennsylvania subscriptions are subject to a separate escrow and are released to the Fund only at such time as total subscription proceeds received by the Fund from all subscribers, including the escrowed Pennsylvania subscriptions, equal not less than $7.5 million in gross proceeds. Total contributions to the Fund exceeded $7.5 million on July 6, 2016. The offering was terminated on January 5, 2018.

As of September 30, 2019, cumulative gross contributions, less rescissions and repurchases (net of distributions paid and allocated syndication costs, as applicable) totaling $25.7 million have been received, inclusive of the $500 initial member’s capital investment. Through the same date, a net total of $151 thousand of such contributions (representing 20,000 Units) have been rescinded or repurchased (net of distributions paid and allocated syndication costs) by the Company. As of September 30, 2019, a total of 2,565,749 Units were issued and outstanding.

The Fund, or Managing Member on behalf of the Fund had incurred costs in connection with the organization, registration and issuance of the Units. The amount of such costs borne by the Fund was limited by certain provisions of the Operating Agreement.

The Company’s principal objectives are to invest in a diversified portfolio of investments that will generate a favorable overall return to investors and (i) preserve, protect and return the Fund’s invested capital; (ii) generate regular cash distributions to Unit holders during the Offering Stage and Operating Stage of the Fund, with any balance remaining after required minimum distributions, equal to not less than 8% nor more than 10% per annum on investors’ Original Invested Capital, to be used to purchase additional investments during the first six years after the year the offering terminates; and (iii) provide additional cash distributions during the Liquidating Stage, commencing with the end of the six year reinvestment period and continuing until all investment portfolio assets have been sold or otherwise disposed.

These unaudited interim financial statements should be read in conjunction with the financial statements and notes thereto contained in the report on Form 10‑K for the year ended December 31, 2018, filed with the Securities and Exchange Commission.