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Discontinued Operations - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Apr. 01, 2016 | Sep. 30, 2016 | Sep. 30, 2015 | Mar. 31, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015 | Nov. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Warranty service periods | 10 years |  |  |  |  |  |  |
Loss on disposal of discontinued operations |  | $ 0 | $ (89) |  | $ (12) | $ (161) |  |
Reclassification adjustment for foreign currency translation adjustments |  | 0 | (460) |  | 0 | (469) |  |
Escrow deposit |  | 0 | 300 |  | 0 | 300 |  |
Energy Focus LED Solutions, LLC |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Warranty service periods |  |  |  | 1 year |  |  |  |
Crescent Lighting Limited |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Loss on disposal of discontinued operations |  | $ 0 | (44) |  | $ 0 | $ (44) |  |
Reclassification adjustment for foreign currency translation adjustments |  |  | $ 469 |  |  |  |  |
Pool products |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Sale price |  |  |  |  |  |  |  | $ 5,200
Escrow deposit |  |  |  |  |  |  | $ 300 | $ 500
Cash held in escrow, released |  |  |  |  |  |  | $ 200 |

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- Definition Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721525-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e957-107759 + Details
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- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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