Share-Based Payment Arrangements (Details 1)	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Outstanding	5,466,936	7,544,432
FalconStor Software, Inc., 2000 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for grant	0
Shares Outstanding	604,301
2004 Outside Directors Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for grant	0
Shares Outstanding	120,000
FalconStor Software, Inc., 2007 Outside Directors Equity Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for grant	0
Shares Outstanding	160,000
FalconStor Software, Inc., 2010 Outside Directors Equity Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for grant	0
Shares Outstanding	17,000