Related Party Transactions (Affiliates Earned Commissions and Billed for Reimbursements Pursuant to Operating Agreement (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Related Party Transaction [Line Items]
Selling commissions, equal to 9% of the selling price of the Limited Liability Company Units, deducted from Other Members capital	$ 290	$ 335	$ 1,328
Reimbursement of other syndication costs to Managing Member and/or affiliates, deducted from Other Members capital	193
Special discounts	13
Administrative costs reimbursed to Managing Member and/or affiliates	49	2
Asset management fees to Managing Member	35	1
Acquisition and initial direct costs paid to Managing Member	127	17
Related party transaction, total	$ 707	$ 355
Selling commission rate	9.00%	9.00%
Atel Securities Corporation [Member]
Related Party Transaction [Line Items]
Selling commission rate	2.00%
Broker-Dealers [Member]
Related Party Transaction [Line Items]
Selling commission rate	7.00%

Acquisition Fees and Initial Direct Costs, Related Party

No definition available.

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- Definition

The reimbursement of costs incurred by the General Partner, Manager or Affiliates on behalf of the Fund. Such costs may be direct or indirect, and are repaid to the respective party.

+ References

No definition available.

+ Details

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- Definition

Percentage of selling commissions to selling price.

+ References

No definition available.

+ Details

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- Definition

Reimbursement of other syndication costs to Managing Member and/or affiliates, deducted from Other Members capital.

+ References

No definition available.

+ Details

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- Definition

Special volume discounts to investors.

+ References

No definition available.

+ Details

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- Definition

Amount of expenses related to the managing member or general partner for management of the day-to-day business functions of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Primarily represents commissions incurred in the period based upon the sale by commissioned employees or third parties of the entity's goods or services, and fees for sales assistance or product enhancements performed by third parties (such as a distributor or value added reseller).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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