Commitments and Contingencies (Details Textual) (USD $)	3 Months Ended			1 Months Ended	3 Months Ended		3 Months Ended
	Mar. 31, 2013 Person	Mar. 31, 2012	Dec. 31, 2012	Jul. 31, 2012 Tel Worx [Member]	Dec. 31, 2012 Tel Worx [Member]	Mar. 31, 2013 Office Equipment [Member]	Mar. 31, 2013 Antenna [Member]	Mar. 31, 2013 Scanning [Member]	Mar. 31, 2013 Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Office equipment						$ 3,000
Repair and replacement warranty							2 years	1 year
Restructuring Expense	0	0							100,000
Accumulated depreciation	15,226,000		14,590,000			1,000
Office equipment, net	14,702,000		14,777,000			2,000
Goodwill impairment				16,100,000	12,500,000
Commitments and Contingencies (Textual) [Abstract]
Allowance for sales returns	100,000		100,000
Warranty reserve	300,000		300,000
Number of employees announced to be terminated	17
Number of employees separated	3
Asset purchase agreement contingent consideration	600,000
Asset purchase agreement escrow deposit	500,000
Lease expiration period	5 years
Rental payments	200,000
Cash payments	4,300,000
working capital adjustment provisions	1,000,000
Potential contingent consideration earnable under the Original Agreement	1,500,000
Fair value in the form common stock	600,000
Parties agreed to the elimination of the holdback	500,000
Notice period for termination of leaves under option	180 days
Settlement agreement fair value	5,400,000
Settlement agreement remaining consideration	4,300,000
Cash agreed to be paid to company under agreement	$ 3,200,000