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Network
2432405 - Disclosure - Income Taxes - Difference in Effective Tax Rate and Federal Statutory Rate (Details)
(http://www.actua.com/role/IncomeTaxesDifferenceInEffectiveTaxRateAndFederalStatutoryRateDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001085621 (http://www.sec.gov/CIK)
Income Tax Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Income Tax Disclosure [Abstract]
 
 
 
Tax expense (benefit) at statutory rate (as a percent)
(35.00%) 
(35.00%) 
(35.00%) 
Foreign and state taxes (as a percent)
3.10%  
0.50%  
6.20%  
Non-deductible expenses and other (as a percent)
1.40%  
15.50%  
7.20%  
Valuation allowance (as a percent)
(1.40%) 
19.30%  
0.00%  
Effective tax rate (as a percent)
(31.90%) 
 
0.30%  
 
(21.60%)