Segment, Customer and Geographic Information - Result of Operations by Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Results of operations by segments
REVENUES	$ 26,471	$ 25,853	$ 78,290	$ 63,007
GROSS PROFIT	10,776	10,038	30,917	25,888
OPERATING INCOME (LOSS)	928	1,159	(124)	922
Operating Segments [Member] | Connected Solutions [Member]
Results of operations by segments
REVENUES	18,318	19,714	56,874	47,687
GROSS PROFIT	5,684	5,684	17,352	15,186
OPERATING INCOME (LOSS)	1,738	1,287	4,872	4,471
Operating Segments [Member] | RF Solutions [Member]
Results of operations by segments
REVENUES	8,243	6,182	21,617	15,387
GROSS PROFIT	5,090	4,348	13,547	10,667
OPERATING INCOME (LOSS)	2,098	1,879	5,139	3,090
Consolidating [Member]
Results of operations by segments
REVENUES	(90)	(43)	(201)	(67)
GROSS PROFIT	2	6	18	35
OPERATING INCOME (LOSS)	$ (2,908)	$ (2,007)	$ (10,135)	$ (6,639)