Segment, Customer and Geographic Information - Result of Operations by Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Results of operations by segments
REVENUES	$ 24,979	$ 21,074
GROSS PROFIT	9,315	7,051
OPERATING INCOME (LOSS)	(293)	(2,753)
Depreciation	734	792
Intangible amortization	290	769
Capital expenditures	1,053	699
Operating Segments [Member] \| Connected Solutions [Member]
Results of operations by segments
REVENUES	17,271	14,699
GROSS PROFIT	5,403	4,324
OPERATING INCOME (LOSS)	1,744	1,305
Depreciation	426	426
Intangible amortization	39	70
Capital expenditures	318	579
Operating Segments [Member] \| RF Solutions [Member]
Results of operations by segments
REVENUES	7,765	6,435
GROSS PROFIT	3,906	2,730
OPERATING INCOME (LOSS)	709	(1,527)
Depreciation	247	305
Intangible amortization	251	699
Capital expenditures	56	89
Corporate, Non-Segment [Member]
Results of operations by segments
REVENUES	(57)	(60)
GROSS PROFIT	6	(3)
OPERATING INCOME (LOSS)	(2,746)	(2,531)
Depreciation	61	61
Intangible amortization	0	0
Capital expenditures	$ 679	$ 31

Amortization of intangible assets included in operating expenses and cost of goods sold.

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1,2)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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-Name Accounting Standards Codification
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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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