Subsequent Events	9 Months Ended
Sep. 30, 2011
Subsequent Events [Abstract]
Subsequent Events	16. Subsequent Events Quarterly Dividend On October 24, 2011 the Company announced the initiation of a quarterly dividend of $0.03 per share payable on November 15, 2011 to shareholders of record as of November 8, 2011. The dividend will paid from the Company’s existing cash balances. Acquisition On October 25, 2011, the Company purchased certain assets from Envision Wireless LLC (“Envision”), an engineering services business based in Melbourne, Florida. The Company paid $1.5 million to acquire customer relationships, accounts receivable and fixed assets. As of the date of this filing, the Company has not completed the purchase price allocation. Envision focuses on the radio frequency (“RF”) issues pertaining to in-building coverage and capacity and its target market is relevant to the Company’s antenna and scanning receiver businesses. Envision provides value-added analysis of collected data to public cellular carriers, network infrastructure providers, and real estate companies. Envision’s founders and key employees will be joining the Company. The Company anticipates generating $0.2 million per month in revenue from this new operation. The cash consideration was paid from the Company’s existing cash balances.

Subsequent Events

9 Months Ended

Sep. 30, 2011

16. Subsequent Events

Quarterly Dividend

On October 24, 2011 the Company announced the initiation of a quarterly dividend of $0.03 per share payable on November 15, 2011 to shareholders of record as of November 8, 2011. The dividend will paid from the Company’s existing cash balances.

Acquisition

On October 25, 2011, the Company purchased certain assets from Envision Wireless LLC (“Envision”), an engineering services business based in Melbourne, Florida. The Company paid $1.5 million to acquire customer relationships, accounts receivable and fixed assets. As of the date of this filing, the Company has not completed the purchase price allocation. Envision focuses on the radio frequency (“RF”) issues pertaining to in-building coverage and capacity and its target market is relevant to the Company’s antenna and scanning receiver businesses. Envision provides value-added analysis of collected data to public cellular carriers, network infrastructure providers, and real estate companies. Envision’s founders and key employees will be joining the Company. The Company anticipates generating $0.2 million per month in revenue from this new operation. The cash consideration was paid from the Company’s existing cash balances.