Quarterly report pursuant to Section 13 or 15(d)

Goodwill And Other Intangible Assets (Schedule Of Changes In Carrying Value Of Goodwill) (Details)

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Goodwill And Other Intangible Assets (Schedule Of Changes In Carrying Value Of Goodwill) (Details) (USD $)
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2011
Suttle [Member]
Jun. 30, 2011
Suttle [Member]
Jun. 30, 2012
Suttle [Member]
Jun. 30, 2011
Transition Networks [Member]
Jun. 30, 2012
Transition Networks [Member]
Dec. 31, 2011
Transition Networks [Member]
Goodwill [Line Items]                    
Goodwill, beginning balance     $ 5,990,571 $ 4,560,217   $ 1,271,986   $ 3,288,231 $ 5,990,571 $ 5,990,571
Impairment loss 0 (1,271,986) 0 (1,271,986) (1,271,986) (1,271,986)        
Acquisition       2,702,340       2,702,340    
Goodwill, ending balance 5,990,571 5,990,571 5,990,571 5,990,571       5,990,571 5,990,571 5,990,571
Gross goodwill 7,262,557   7,262,557       1,271,986   5,990,571  
Accumulated impairment loss (1,271,986)   (1,271,986)       (1,271,986)      
Balance at June 30, 2012 $ 5,990,571 $ 5,990,571 $ 5,990,571 $ 5,990,571       $ 5,990,571 $ 5,990,571 $ 5,990,571