Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Schedule of operations by geographic segment
Subtotal	$ 1,966us-gaap_Revenues	$ 2,452us-gaap_Revenues
Net sales	41,305us-gaap_SalesRevenueNet	36,985us-gaap_SalesRevenueNet
Segment net income (loss)	(1,422)us-gaap_NetIncomeLoss	(1,123)us-gaap_NetIncomeLoss
Depreciation and amortization	3,129	1,693
Total assets	225,121us-gaap_Assets	182,983us-gaap_Assets	235,837us-gaap_Assets
Subtotal [Member]
Schedule of operations by geographic segment
Subtotal	43,271	39,437
Eliminations [Member]
Schedule of operations by geographic segment
Subtotal	(1,966)	(2,452)
Mobile communication [Member] \| United States [Member]
Schedule of operations by geographic segment
Subtotal	22,481	20,997
Mobile communication [Member] \| Canada [Member]
Schedule of operations by geographic segment
Subtotal	271	185
Mobile communication [Member] \| Europe [Member]
Schedule of operations by geographic segment
Subtotal	5,137	5,848
Mobile communication [Member] \| Other geographic areas [Member]
Schedule of operations by geographic segment
Subtotal	8,354	1,945
Guidance and stabilization [Member] \| United States [Member]
Schedule of operations by geographic segment
Subtotal	1,085	1,973
Guidance and stabilization [Member] \| Canada [Member]
Schedule of operations by geographic segment
Subtotal	2,210	3,182
Guidance and stabilization [Member] \| Europe [Member]
Schedule of operations by geographic segment
Subtotal	847	1,101
Guidance and stabilization [Member] \| Other geographic areas [Member]
Schedule of operations by geographic segment
Subtotal	920	1,754
Americas [Member]
Schedule of operations by geographic segment
Subtotal	1,168	1,576
Net sales	28,795	29,748
Segment net income (loss)	(1,154)	(1,196)
Depreciation and amortization	1,176	1,131
Total assets	142,814	165,229
Americas [Member] \| Subtotal [Member]
Schedule of operations by geographic segment
Subtotal	29,963	31,324
Americas [Member] \| Eliminations [Member]
Schedule of operations by geographic segment
Subtotal	(1,168)	(1,576)
Americas [Member] \| Mobile communication [Member] \| United States [Member]
Schedule of operations by geographic segment
Subtotal	22,046	20,677
Americas [Member] \| Mobile communication [Member] \| Canada [Member]
Schedule of operations by geographic segment
Subtotal	255	170
Americas [Member] \| Mobile communication [Member] \| Europe [Member]
Schedule of operations by geographic segment
Subtotal	98	27
Americas [Member] \| Mobile communication [Member] \| Other geographic areas [Member]
Schedule of operations by geographic segment
Subtotal	1,334	864
Americas [Member] \| Guidance and stabilization [Member] \| United States [Member]
Schedule of operations by geographic segment
Subtotal	1,085	1,973
Americas [Member] \| Guidance and stabilization [Member] \| Canada [Member]
Schedule of operations by geographic segment
Subtotal	2,210	3,182
Americas [Member] \| Guidance and stabilization [Member] \| Europe [Member]
Schedule of operations by geographic segment
Subtotal	847	1,101
Americas [Member] \| Guidance and stabilization [Member] \| Other geographic areas [Member]
Schedule of operations by geographic segment
Subtotal	920	1,754
Europe and Asia [Member]
Schedule of operations by geographic segment
Subtotal	798	876
Net sales	12,510	7,237
Segment net income (loss)	(268)	73
Depreciation and amortization	1,953	562
Total assets	82,307	17,754
Europe and Asia [Member] \| Subtotal [Member]
Schedule of operations by geographic segment
Subtotal	13,308	8,113
Europe and Asia [Member] \| Eliminations [Member]
Schedule of operations by geographic segment
Subtotal	(798)	(876)
Europe and Asia [Member] \| Mobile communication [Member] \| United States [Member]
Schedule of operations by geographic segment
Subtotal	435	320
Europe and Asia [Member] \| Mobile communication [Member] \| Canada [Member]
Schedule of operations by geographic segment
Subtotal	16	15
Europe and Asia [Member] \| Mobile communication [Member] \| Europe [Member]
Schedule of operations by geographic segment
Subtotal	5,039	5,821
Europe and Asia [Member] \| Mobile communication [Member] \| Other geographic areas [Member]
Schedule of operations by geographic segment
Subtotal	7,020	1,081
Europe and Asia [Member] \| Guidance and stabilization [Member] \| United States [Member]
Schedule of operations by geographic segment
Subtotal	0	0
Europe and Asia [Member] \| Guidance and stabilization [Member] \| Canada [Member]
Schedule of operations by geographic segment
Subtotal	0	0
Europe and Asia [Member] \| Guidance and stabilization [Member] \| Europe [Member]
Schedule of operations by geographic segment
Subtotal	0	0
Europe and Asia [Member] \| Guidance and stabilization [Member] \| Other geographic areas [Member]
Schedule of operations by geographic segment
Subtotal	$ 0	$ 0