Shareholders' Equity And Puttable Common Stock (Details) (USD $)	Dec. 31, 2012	Oct. 22, 2012	Oct. 21, 2012	Dec. 31, 2011	Dec. 31, 2012 Preferred Stock 100 Par Value [Member]	Dec. 31, 2011 Preferred Stock 100 Par Value [Member]	Dec. 31, 2012 Preferred Stock 0.01 Par Value [Member]	Dec. 31, 2011 Preferred Stock 0.01 Par Value [Member]	Dec. 31, 2012 Alteva, LLC [Member]	Aug. 22, 2012 Alteva, LLC [Member]	Dec. 31, 2011 Alteva, LLC [Member]
Common stock, authorized shares	10,000,000			10,000,000
Common stock, par value	$ 0.01			$ 0.01
Preferred shares, authorized shares					5,000	5,000	10,000,000	10,000,000
Preferred shares, par value					$ 100	$ 100	$ 0.01	$ 0.01
Common stock, issued shares	6,576,542			6,217,839					272,479		247,331
Puttable common stock				$ 4,125,000							$ 25,148
Puttable common stock, fair value				4,100,000
Puttable common stock price per share				$ 13.45						$ 12.55
Payment for puttable shares		$ 500,000	$ 400,000
Exercise price per share				$ 11.74