Share-Based Payment Arrangements (Details 1)	Mar. 31, 2015
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	558,781
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