(2) Share-Based Payment Arrangements (Details 1)	Mar. 31, 2013	Dec. 31, 2012
Shares outstanding	10,876,047	11,360,842
FalconStor Software, Inc., 2000 Stock Option Plan Member
Shares Available for grant	0
Shares outstanding	2,062,787
1994 Outside Directors Stock Option Plan Member
Shares Available for grant	0
Shares outstanding	40,000
2004 Outside Directors Stock Option Plan Member
Shares Available for grant	0
Shares outstanding	190,000
FalconStor Software, Inc., 2007 Outside Directors Equity Compensation Plan Member
Shares Available for grant	0
Shares outstanding	170,000
Stand-Alone Stock Option Agreement between the Company and James P. McNiel Member
Shares Available for grant	0
Shares outstanding	1,220,000
Falcon Stor 2010
Shares Available for grant	0
Shares outstanding	90,300