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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Share-Based Payment Arrangements (Details Narrative) - USD ($)						12 Months Ended
	Jul. 01, 2016	Apr. 27, 2016	Apr. 01, 2016	Mar. 07, 2016	Jul. 28, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2016	Jul. 24, 2015	Sep. 13, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares outstanding (in shares)	43,332,111					43,954,919	41,666,747
Options contractual term (maximum)					10 years	10 years
Recognition of tax benefits related to share-based compensation expense						$ 0	$ 0
Market condition, weighted average grant date fair value					$ 1.05
Total intrinsic value of restricted stock for which the restrictions lapsed						637,404	447,777
Share-based compensation to non-employees						1,576,882	578,074
Share-based compensation expense						$ 2,328,218	$ 1,929,377
Share price (in dollars per share)										$ 1.23
Weighted average fair value of share-based payments granted (in dollars per share)						$ 0.95	$ 1.32
Estimated forfeiture rate for officers						30.00%	30.00%
Estimated forfeiture rate for employees						30.00%	30.00%
Estimated forfeiture rate for directors						0.00%	0.00%
Restricted stock awards, granted						737,436
Total unrecognized compensation costs						$ 1,400,000
Weighted-average period of recognition for unrecognized compensation cost						1 year 4 months 22 days
Common stock reserved for issuance upon the exercise of stock options, restricted stock and restricted stock units						7,787,460
FalconStor Software, Inc., 2006 Incentive Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares available for issuance						0
FalconStor Software, Inc., 2016 Incentive Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares available for issuance	2,166,606					1,779,170		1,500,000
Maximum Shares Outstanding Under Plan Percentage	5.00%
Maximum number of shares authorized (in shares)	20,000,000	1,500,000				2,166,606
Options contractual term (maximum)		10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Other Increases (Decreases) in Period	666,606
FalconStor Software, Inc., 2016 Outside Directors Equity Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares available for issuance						380,000
Maximum number of shares authorized (in shares)		400,000				400,000
Options contractual term (maximum)		10 years
President and Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted share grants					500,000				500,000
Non-employee consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options contractual term (maximum)						10 years
Vested period for options granted						3 years
Directors, officers, and employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options contractual term (maximum)						10 years
Vested period for options granted						3 years
Restricted stock \| Non-employee consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense						$ 96,237	$ 0
Cumulus Logic, LLC \| Non-employee consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation to non-employees			$ 892,500	$ 765,000
Share price (in dollars per share)			$ 1.33	$ 1.38
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation to non-employees						1,099	254
Common Stock \| Cumulus Logic, LLC \| Non-employee consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued related to the Software License and Development Agreement			591,582	507,070
Research and development costs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense						$ 1,653,336	$ 806,348
Research and development costs \| Cumulus Logic, LLC \| Non-employee consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			$ 786,804	$ 699,757