Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The changes in the carrying amount of identifiable intangible assets, net for the years ended December 31, 2016 and 2015 is as follows (in thousands):

	Amount
Balance as of December 31, 2014	$	1,413
Amortization	(230		)
Balance as of December 31, 2015	1,183
Amortization	(230		)
Balance as of December 31, 2016	$	953

Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

The following table presents the details of the Company's finite-lived intangible assets as of December 31, 2016 (in thousands, except for weighted-average remaining useful life):

	Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Weighted-Average Remaining Useful Life (in years)
Developed technology	$	800	$	292	$	508	4.13
Customer relationships	500		182		318		4.13
Trade names	200		73		127		4.13
Total	$	1,500	$	547	$	953	4.13

Schedule of Goodwill [Table Text Block]

The changes in the carrying amount of goodwill, net, for the years endedDecember 31, 2015 and 2014 are as follows (in thousands):

	Amount
Balance as of December 31, 2013	$	8,390
Unrealized foreign currency translation loss	(323		)
Goodwill impairment - Grid division	(3,388		)
Goodwill associated with Lumewave acquisition	1,257
Balance as of December 31, 2014	5,936
Unrealized foreign currency translation loss	(238		)
Goodwill impairment	(5,698		)
Balance as of December 31, 2015	$	—

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

The following table presents the amortization of finite-lived intangible assets included in the consolidated statements of operations for the years ended December 31, 2016, 2015, and 2014 (in thousands):

	Year ended December 31,
	2016		2015		2014
Cost of revenues	$	123	$	123	$	46
Operating expenses	107		107		41
Total	$	230	$	230	$	87

Goodwill Disclosure [Text Block]

The following table presents the estimated future amortization of finite-lived intangible assets as of December 31, 2016 (in thousands):

	Estimated Future Amoritization
2017	$	229
2018	229
2019	229
2020	229
2021	37
Total	$	953