Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details 1)

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Stockholders' Equity (Details 1) - Interstate Battery System International, Inc. and Other Investors [Member]
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Fair value $ 26,463
Allocated value 10,000
Common Stock [Member]  
Fair value 7,998
Allocated value 3,022
Warrants [Member]  
Fair value 13,586
Allocated value 5,134
Convertible Note [Member]  
Fair value 4,879
Allocated value $ 1,844