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PCTEL Secure - discontinued operations - Assets and Liabilities Classified as Discontinued Operations Held for Sale on Condensed Consolidated Balances Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Business Combinations [Abstract]
Cash and cash equivalents	$ 0	$ 16
Fixed assets	0	18
Total assets	0	18
Accounts payable	0	86
Accrued liabilities	0	17
Total liabilities	$ 0	$ 103

For the disposal group, including a component of the entity (discontinued operation), cash includes currency on hand as well as demand deposits with banks or financial institutions. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

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