Segment, Customer and Geographic Information (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets by segment
Accounts Receivable	$ 17,843	$ 18,586
Inventories, net	16,848	17,573
Long-lived assets:
Property and equipment, net	14,702	14,777
Goodwill	161	161
Intangible assets, net	6,399	7,004
Deferred tax assets, net	13,000	14,034
Other noncurrent assets	1,729	1,636
Connected Solutions [Member]
Assets by segment
Accounts Receivable	12,576	11,884
Inventories, net	14,161	14,283
Long-lived assets:
Property and equipment, net	11,825	11,868
Goodwill	0	0
Intangible assets, net	4,009	4,404
Deferred tax assets, net	0	0
Other noncurrent assets	0	0
RF Solutions [Member]
Assets by segment
Accounts Receivable	5,267	6,702
Inventories, net	2,687	3,290
Long-lived assets:
Property and equipment, net	1,772	1,748
Goodwill	161	161
Intangible assets, net	2,390	2,600
Deferred tax assets, net	0	0
Other noncurrent assets	0	0
Consolidating [Member]
Assets by segment
Accounts Receivable	0	0
Inventories, net	0	0
Long-lived assets:
Property and equipment, net	1,105	1,161
Goodwill	0	0
Intangible assets, net	0	0
Deferred tax assets, net	13,000	14,034
Other noncurrent assets	$ 1,729	$ 1,636