Share-Based Payment Arrangements Share-Based Payment Arrangements (Detail Narrative) - shares	Jul. 01, 2015	Jun. 30, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Common stock, shares outstanding		40,920,192	40,924,313
FalconStor Software, Inc., 2006 Incentive Stock Plan
Subsequent Event [Line Items]
Shares Available for Grant		3,246,122
Shares Authorized		13,455,546
FalconStor Software, Inc., 2006 Incentive Stock Plan | Subsequent Event
Subsequent Event [Line Items]
Shares Available for Grant	3,246,122
Maximum Shares Outstanding Under Plan, Percentage	(5.00%)
Shares Authorized	20,000,000
Common stock, shares outstanding	40,920,192