PCTEL Secure - Summary of Operations for Discontinued Operations Included in Condensed Consolidated Statement of Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Business Combinations [Abstract]
Loss from discontinued operations, before income taxes		$ (121)
Benefit for income tax		(33)
Loss from discontinued operations, net of tax		$ (88)
Income (loss) from discontinued operations per common share:
Basic	$ 0.00	$ 0.00
Diluted	$ 0.00	$ 0.00
Weighted average shares:
Basic	18,176	17,684
Diluted	18,176	17,911

PCTEL Secure - Summary of Operations for Discontinued Operations Included in Condensed Consolidated Statement of Operations (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Business Combinations [Abstract]

Loss from discontinued operations, before income taxes

$ (121)

Benefit for income tax

(33)

Loss from discontinued operations, net of tax

$ (88)

Income (loss) from discontinued operations per common share:

Basic

$ 0.00

Diluted

$ 0.00

Weighted average shares:

Basic

18,176

17,684

Diluted

18,176

17,911

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Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Amount of income (loss) from a disposal group, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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