Segment, Customer and Geographic Information - Result of Operations by Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Results of operations by segments
REVENUES	$ 26,746	$ 19,993	$ 51,818	$ 37,154
COST OF REVENUES	16,198	11,323	31,672	21,306
GROSS PROFIT	10,548	8,670	20,146	15,848
OPERATING EXPENSES:
Research and development	2,683	2,215	5,233	4,531
Sales and marketing	3,054	2,573	6,075	5,082
General and administrative	3,825	2,656	8,456	5,389
Amortization of intangible assets	604	542	1,209	1,084	3,200
Restructuring charges	124	0	225	0
Total operating expenses	10,290	7,986	21,198	16,086
OPERATING INCOME (LOSS)	258	684	(1,052)	(238)
Operating Segments [Member] | Connected Solutions [Member]
Results of operations by segments
REVENUES	19,199	14,821	38,555	27,988
COST OF REVENUES	13,537	9,717	26,882	18,485
GROSS PROFIT	5,662	5,104	11,673	9,503
OPERATING EXPENSES:
Research and development	1,166	1,042	2,302	2,119
Sales and marketing	2,147	1,543	4,339	3,099
General and administrative	457	244	885	470
Amortization of intangible assets	394	321	790	643
Restructuring charges	124	0	225	0
Total operating expenses	4,288	3,150	8,541	6,331
OPERATING INCOME (LOSS)	1,374	1,954	3,132	3,172
Operating Segments [Member] | RF Solutions [Member]
Results of operations by segments
REVENUES	7,602	5,206	13,374	9,204
COST OF REVENUES	2,726	1,650	4,917	2,886
GROSS PROFIT	4,876	3,556	8,457	6,318
OPERATING EXPENSES:
Research and development	1,517	1,173	2,931	2,412
Sales and marketing	907	1,030	1,736	1,983
General and administrative	170	118	329	259
Amortization of intangible assets	210	221	419	441
Restructuring charges	0	0	0	0
Total operating expenses	2,804	2,542	5,415	5,095
OPERATING INCOME (LOSS)	2,072	1,014	3,042	1,223
Consolidating [Member]
Results of operations by segments
REVENUES	(55)	(34)	(111)	(38)
COST OF REVENUES	(65)	(44)	(127)	(65)
GROSS PROFIT	10	10	16	27
OPERATING EXPENSES:
Research and development	0	0	0	0
Sales and marketing	0	0	0	0
General and administrative	3,198	2,294	7,242	4,660
Amortization of intangible assets	0	0	0	0
Restructuring charges	0	0	0	0
Total operating expenses	3,198	2,294	7,242	4,660
OPERATING INCOME (LOSS)	$ (3,188)	$ (2,284)	$ (7,226)	$ (4,633)