DESCRIPTION OF BUSINESS	9 Months Ended
Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS	1. DESCRIPTION OF BUSINESS Digital Power Corporation (*"Digital Power") was incorporated in 1969, under the General Corporation Law of the State of California. Digital Power and Digital Power Limited ("DP Limited"), a wholly owned subsidiary, located in the United Kingdom, are currently engaged in the design, manufacture and sale of switching power supplies and converters. On November 30, 2016, Digital Power formed Digital Power Lending, LLC (“DP Lending”), and on April 25, 2017, Digital Power formed Coolisys Technologies, Inc. (“Coolisys”). Both DP Lending and Coolisys are wholly-owned subsidiaries. DP Lending is engaged in providing commercial loans to companies throughout the United States to provide them with operating capital to finance the growth of their businesses. The loans will primarily be short-term, ranging from six to twelve months. The Company intends to operate its existing businesses in the customized and flexible power system solutions for the medical, military, telecom and industrial markets, other than the European markets which are primarily served by DP Limited, in Coolisys. On June 2, 2017, Digital Power purchased 56.4% of the outstanding equity interests of Microphase Corporation, a Delaware corporation (the “Microphase”). Microphase is a design-to-manufacture original equipment manufacturer (“OEM”) delivering radio frequency (“RF”) and microwave filters, diplexers, multiplexers, detectors, switch filters, integrated assemblies and detector logarithmic video amplifiers (“DLVA”) to the military, aerospace and telecommunications industries. Microphase is headquartered in Shelton, Connecticut. Further, on September 1, 2017, Coolisys acquired all of the outstanding membership interests in Power-Plus Technical Distributors, LLC, a California limited liability company (“Power-Plus”). Power-Plus is an industrial distributor of value added power supply solutions, UPS systems, fans, filters, line cords, and other power-related components. The Company’s results of operations include the results of Microphase and Power-Plus from their respective acquisition dates forward. Digital Power, DP Limited, Microphase, Coolisys, Power-Plus and DP Lending (collectively, the “Company”*) has two reportable geographic segments - North America (sales through Digital Power, Microphase, Coolisys, Power-Plus and DP Lending) and Europe (sales through DP Limited).

DESCRIPTION OF BUSINESS

9 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. DESCRIPTION OF BUSINESS

Digital Power Corporation ("Digital Power") was incorporated in 1969, under the General Corporation Law of the State of California. Digital Power and Digital Power Limited ("DP Limited"), a wholly owned subsidiary, located in the United Kingdom, are currently engaged in the design, manufacture and sale of switching power supplies and converters. On November 30, 2016, Digital Power formed Digital Power Lending, LLC (“DP Lending”), and on April 25, 2017, Digital Power formed Coolisys Technologies, Inc. (“Coolisys”). Both DP Lending and Coolisys are wholly-owned subsidiaries. DP Lending is engaged in providing commercial loans to companies throughout the United States to provide them with operating capital to finance the growth of their businesses. The loans will primarily be short-term, ranging from six to twelve months. The Company intends to operate its existing businesses in the customized and flexible power system solutions for the medical, military, telecom and industrial markets, other than the European markets which are primarily served by DP Limited, in Coolisys. On June 2, 2017, Digital Power purchased 56.4% of the outstanding equity interests of Microphase Corporation, a Delaware corporation (the “Microphase”). Microphase is a design-to-manufacture original equipment manufacturer (“OEM”) delivering radio frequency (“RF”) and microwave filters, diplexers, multiplexers, detectors, switch filters, integrated assemblies and detector logarithmic video amplifiers (“DLVA”) to the military, aerospace and telecommunications industries. Microphase is headquartered in Shelton, Connecticut. Further, on September 1, 2017, Coolisys acquired all of the outstanding membership interests in Power-Plus Technical Distributors, LLC, a California limited liability company (“Power-Plus”). Power-Plus is an industrial distributor of value added power supply solutions, UPS systems, fans, filters, line cords, and other power-related components. The Company’s results of operations include the results of Microphase and Power-Plus from their respective acquisition dates forward. Digital Power, DP Limited, Microphase, Coolisys, Power-Plus and DP Lending (collectively, the “Company”) has two reportable geographic segments - North America (sales through Digital Power, Microphase, Coolisys, Power-Plus and DP Lending) and Europe (sales through DP Limited).