PCTEL Secure - Discontinued Operations - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Jul. 02, 2012	May 29, 2012	Jan. 05, 2011
Business Acquisition [Line Items]
Contribution of cash in return of ownership of the joint venture			$ 0.8	$ 0.9	$ 2.5
Ownership percentage in the joint venture			30.00%	19.00%	51.00%
Weighted average amortization period of the intangible assets acquired	2 years 4 months 24 days
Ownership, prior transition	51.00%
Ownership, after transition	100.00%
Percentage of membership interests company did not owned	100.00%
Intangible asset impairment expense		1.1
Pctel Secure [Member]
Business Acquisition [Line Items]
Royalty receivable as percentage of net sale price	7.00%
Maximum royalty rate	10
Eclipse [Member]
Business Acquisition [Line Items]
Ownership percentage in the joint venture					49.00%
Contribution of intangible asset in return for ownership of the joint venture					$ 2.4