Subsequent Events	3 Months Ended
Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTSOn April 17, 2020, the Company was granted a loan from KeyBank National Association in the amount of approximately $795 thousand, pursuant to the Paycheck Protection Program (the “PPP”) under Division A of the Coronavirus Aid, Relief and Economic Securities Act (the "CARES Act"), which was enacted on March 27, 2020. The loan accrues interest at a rate of 1.0% per annum and matures on April 17, 2022. The funds were received on April 20, 2020. Under the terms of the PPP, certain amounts of the loan may be forgiven if they are used for qualifying expenses as described in the CARES Act. The Company intends to use the entire loan amount for qualifying expenses, however there is no assurance that the Company will obtain forgiveness for any portion of the loan. On April 16, 2020, NASDAQ announced that, in response to the COVID-19 pandemic and related extraordinary market conditions, it is providing temporary relief through June 30, 2020 from, among other rules, the $1.00 minimum bid price rule. As a result, Energy Focus has until July 24, 2020 to come into compliance with the $1.00 minimum bid price rule. Energy Focus is evaluating its options to come into compliance, including, in the discretion of its board of directors, effectuating a reverse stock split of its common stock at a ratio of at least 1-for-2 and up to 1-for-20, which discretionary reverse stock split has been approved by Energy Focus’ stockholders, provided it occurs no later than June 17, 2020.

Subsequent Events

3 Months Ended

Mar. 31, 2020

SUBSEQUENT EVENTSOn April 17, 2020, the Company was granted a loan from KeyBank National Association in the amount of approximately $795 thousand, pursuant to the Paycheck Protection Program (the “PPP”) under Division A of the Coronavirus Aid, Relief and Economic Securities Act (the "CARES Act"), which was enacted on March 27, 2020. The loan accrues interest at a rate of 1.0% per annum and matures on April 17, 2022. The funds were received on April 20, 2020. Under the terms of the PPP, certain amounts of the loan may be forgiven if they are used for qualifying expenses as described in the CARES Act. The Company intends to use the entire loan amount for qualifying expenses, however there is no assurance that the Company will obtain forgiveness for any portion of the loan. On April 16, 2020, NASDAQ announced that, in response to the COVID-19 pandemic and related extraordinary market conditions, it is providing temporary relief through June 30, 2020 from, among other rules, the $1.00 minimum bid price rule. As a result, Energy Focus has until July 24, 2020 to come into compliance with the $1.00 minimum bid price rule. Energy Focus is evaluating its options to come into compliance, including, in the discretion of its board of directors, effectuating a reverse stock split of its common stock at a ratio of at least 1-for-2 and up to 1-for-20, which discretionary reverse stock split has been approved by Energy Focus’ stockholders, provided it occurs no later than June 17, 2020.