ACQUISITION (Details 1) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Net loss	$ (1,851)	$ 66	$ (2,845)	$ (127)
Less: Net loss attributable to non-controlling interest	$ 112		$ 112
Basic and diluted weighted average common shares outstanding (in shares)	10,467,658	6,775,971	9,430,945	6,775,971
Microphase Corporation [Member]
Restructuring Cost and Reserve [Line Items]
Revenue	$ 2,714	$ 4,017	$ 5,408	$ 7,848
Net loss	(1,924)	(651)	(4,076)	(1,099)
Less: Net loss attributable to non-controlling interest	127	313	632	424
Net loss attributable to Digital Power Corp	(1,797)	(338)	(3,444)	(675)
Preferred deemed dividends	(319)		(319)
Preferred dividends	(8)		(8)
Loss available to common shareholders	$ (2,124)	$ (338)	$ (3,771)	$ (675)
Basic and diluted net loss per common share (in dollars per share)	$ (0.17)	$ (0.04)	$ (0.33)	$ (0.08)
Basic and diluted weighted average common shares outstanding (in shares)	12,310,106	8,618,419	11,273,393	8,618,419
Comprehensive Loss
Loss available to common shareholders	$ (2,124)	$ (338)	$ (3,771)	$ (675)
Other comprehensive income (loss)
Change in net foreign currency translation adjustments	78	(152)	99	(210)
Net unrealized gain (loss) on securities available-for-sale, net of income taxes	0		130	18
Other comprehensive income (loss)	78	(152)	229	(192)
Total Comprehensive loss	$ (2,046)	$ (490)	$ (3,542)	$ (867)