Goodwill and Intangible Assets - Schedule of Intangible Assets from Continuing Operations (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Technology acquired	$ 1,150	$ 1,150
Customer relationships	200	200
Covenant-not-to-compete	200	200
Backlog	200	200
Intangibles with definite lives Gross	1,750	1,750
Intangibles with definite lives Accumulated amortization	(1,750)	(1,682)
Intangibles with definite lives Carrying value		68us-gaap_FiniteLivedIntangibleAssetsNet
Trademarks and trade names	500us-gaap_IndefiniteLivedTrademarks	500us-gaap_IndefiniteLivedTrademarks
Foreign currency translation	(133)	(111)
Trademarks and trade names	367us-gaap_IndefiniteLivedTradeNames	389us-gaap_IndefiniteLivedTradeNames
Total intangible assets, net	367	457
Electronic Devices [Member]
Technology acquired		1,150
Customer relationships		200
Covenant-not-to-compete	200
Backlog	200
Intangibles with definite lives Gross	400	1,350
Intangibles with definite lives Accumulated amortization	(400)	(1,282)
Intangibles with definite lives Carrying value		68
Trademarks and trade names	500
Foreign currency translation	(133)
Trademarks and trade names	367
Total intangible assets, net	367	68
Communications Equipment [Member]
Technology acquired	1,150
Customer relationships	200
Covenant-not-to-compete		200
Backlog		200
Intangibles with definite lives Gross	1,350	400
Intangibles with definite lives Accumulated amortization	(1,350)	(400)
Intangibles with definite lives Carrying value
Trademarks and trade names		500
Foreign currency translation		(111)
Trademarks and trade names		389
Total intangible assets, net		$ 389

Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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