| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | Period [Axis] |
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2016-01-01 - 2016-12-31 |
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Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | |
Summary of Equity-Based Compensation | The following table summarizes the equity-based compensation recognized by expense line item on Actua’s Consolidated Statements of Operations and Comprehensive Income (Loss): | | | | | | | | | | | | | | (in thousands) | | Year ended December 31, | | | 2016 | | 2015 | | 2014 | Cost of revenue | | $ | 107 |
| | $ | 140 |
| | $ | 69 |
| Sales and marketing | | 315 |
| | 330 |
| | 145 |
| General and administrative | | 13,174 |
| | 25,009 |
| | 23,395 |
| Research and development | | 462 |
| | 465 |
| | 138 |
| Total equity-based compensation | | $ | 14,058 |
| | $ | 25,944 |
| | $ | 23,747 |
|
Equity-based compensation by equity award type: | | | | | | | | | | | | | | (in thousands, except weighted average years) | | Year ended December 31, | | | 2016 | | 2015 | | 2014 | Restricted stock | | $ | 11,390 |
| | $ | 22,811 |
| | $ | 21,818 |
| SARs | | 128 |
| | 398 |
| | 792 |
| DSUs | | 341 |
| | 234 |
| | 444 |
| | | 11,859 |
| | 23,443 |
| | 23,054 |
| Equity-based compensation for consolidated businesses | | 2,199 |
| | 2,501 |
| | 693 |
| Total equity-based compensation | | $ | 14,058 |
| | $ | 25,944 |
| | $ | 23,747 |
|
Unrecognized equity-based compensation by equity award type: | | | | | | | | | | | | | | | | (in thousands) | | Year ended December 31, | | Weighted average years remaining of equity-based compensation as of December 31, 2016 | | | 2016 | | 2015 | | 2014 | | Restricted stock | | $ | 9,960 |
| | $ | 18,946 |
| | $ | 37,780 |
| | 1.25 | SARs | | 117 |
| | 125 |
| | 519 |
| | 3.25 | DSUs | | 430 |
| | 968 |
| | 17 |
| | 1.45 | | | 10,507 |
| | 20,039 |
| | 38,316 |
| | | Equity-based compensation for consolidated businesses | | 6,226 |
| | 4,888 |
| | 1,799 |
| | 2.84 | Total equity-based compensation | | $ | 16,733 |
| | $ | 24,927 |
| | $ | 40,115 |
| | |
|
Changes in Restricted Stock | Share activity with respect to restricted stock awards for the years ended December 31, 2016, 2015 and 2014 was as follows: | | | | | | | | | | | Number of shares | | Weighted average grant date fair value | Issued and unvested as of December 31, 2013 | | 1,185,071 |
| | $ | 9.52 |
| Granted | | 3,239,948 |
| | $ | 17.22 |
| Vested | | (299,703 | ) | | $ | 11.76 |
| Forfeited | | (370,041 | ) | | $ | 9.96 |
| Issued and unvested as of December 31, 2014 | | 3,755,275 |
| | $ | 15.94 |
| Granted | | 581,672 |
| | $ | 15.48 |
| Vested | | (785,820 | ) | | $ | 18.20 |
| Forfeited | | (70,299 | ) | | $ | 17.35 |
| Issued and unvested as of December 31, 2015 | | 3,480,828 |
| | $ | 15.82 |
| Granted | | 555,680 |
| | $ | 8.37 |
| Vested | | (766,159 | ) | | $ | 17.96 |
| Forfeited | | (626,319 | ) | | $ | 10.90 |
| Issued and unvested as of December 31, 2016 | | 2,644,030 |
| | $ | 14.15 |
|
The table below summarizes the grant and vesting of performance plan-related restricted stock grants for each of 2014, 2015 and 2016. On March 10, 2017, the Board approved and granted Actua's senior employees, including Actua's executive officers, 263,756 shares of restricted stock in relation to the Actua 2017 Performance Plan. | | | | | | | | | | | | | | | | | | | | | Percentage of Target Bonus Potentially Payable in Restricted Stock | | ACTA Stock Price at Issuance | | Restricted Shares Granted | | Performance Plan Achievement Percentage | | Restricted Shares Vested | | Restricted Shares Forfeited | Actua 2014 Performance Plan | 100 | % | | $ | 20.33 |
| | 158,942 |
| | 100 | % | | 158,942 |
| | — |
| Actua 2015 Performance Plan | 150 | % | | $ | 16.76 |
| | 316,715 |
| | 83 | % | | 175,249 |
| | 141,466 |
| Actua 2016 Performance Plan | 100 | % | | $ | 8.44 |
| | 419,283 |
| | 60 | % | | 251,570 |
| | 167,713 |
|
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Schedule of Shares Withheld for Income Taxes | The following shares were surrendered by Actua's employees for satisfying withholding taxes: | | | | |
| | Restricted stock surrendered | Year ended December 31, 2016 | | 196,566 |
| Year ended December 31, 2015 | | 258,947 |
| Year ended December 31, 2014 | | 93,115 |
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Issued And Unvested Shares Of Restricted Stock Granted | As of December 31, 2016, issued and unvested shares of restricted stock granted to Actua’s employees and directors vest as follows: | | | | | Number of shares unvested | | Vesting conditions | 1,335,700 |
| | Subject to certain market conditions, as discussed below | 419,283 |
| | Subject to certain performance conditions, as discussed below | 889,047 |
| | Subject to certain service conditions, as discussed below | 2,644,030 |
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Changes in Stock Appreciation Rights | Activity with respect to SARs during the years ended December 31, 2016, 2015 and 2014 was as follows: | | | | | | | | | | | | | | | Number of SARs | | Weighted average base price | | Weighted average
fair value | Outstanding as of December 31, 2013 | | 1,232,808 |
| | $ | 8.86 |
| | $ | 4.99 |
| Granted | | 500 |
| | $ | 17.31 |
| | $ | 9.48 |
| Exercised (1) | | (679,606 | ) | | $ | 7.35 |
| | $ | 3.60 |
| Forfeited | | (5,220 | ) | | $ | 10.14 |
| | $ | 5.43 |
| Outstanding as of December 31, 2014 | | 548,482 |
| | $ | 10.62 |
| | $ | 5.79 |
| Granted | | 1,500 |
| | $ | 16.69 |
| | $ | 8.99 |
| Exercised (1) | | (68,638 | ) | | $ | 10.67 |
| | $ | 5.79 |
| Forfeited | | (1,688 | ) | | $ | 9.35 |
| | $ | 4.95 |
| Outstanding as of December 31, 2015 | | 479,656 |
| | $ | 10.64 |
| | $ | 5.80 |
| Granted | | 25,000 |
| | $ | 9.02 |
| | $ | 4.79 |
| Exercised (1) | | (191,205 | ) | | $ | 9.35 |
| | $ | 5.07 |
| Forfeited | | (5,937 | ) | | $ | 12.15 |
| | $ | 6.63 |
| Outstanding as of December 31, 2016 | | 307,514 |
| | $ | 11.28 |
| | $ | 6.21 |
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______________________________ | | (1) | The exercise of SARs listed above resulted in the issuance of the following shares of Actua’s Common Stock in those respective years: |
| | | | | | | Number of Shares | Year ended December 31, 2014 | | 253,853 |
| Year ended December 31, 2015 | | 11,261 |
| Year ended December 31, 2016 | | 60,219 |
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The following table summarizes information about SARs outstanding as of December 31, 2016: | | | | | | | | | | | | | | Grant price | | Number of SARs outstanding | | Number of SARs exercisable | | Weighted average remaining contractual life of SARs outstanding (in years) | | Aggregate intrinsic value of SARs outstanding as of December 31, 2016 (in thousands) | $6.70 - $8.76 | | 29,950 |
| | 29,950 |
| | 1.72 | | $ | 167 |
| $9.02 - $9.25 | | 44,329 |
| | 19,329 |
| | 7.71 | | 216 |
| $11.69 - $17.31 | | 233,235 |
| | 231,942 |
| | 4.27 | | 464 |
| | | 307,514 |
| | 281,221 |
| | | | $ | 847 |
|
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Assumptions Used to Determine Fair Value of Stock Appreciation Rights Granted to Employees | The following assumptions were used to determine the fair value of SARs granted to employees by Actua during the years ended December 31, 2016, 2015, and 2014: | | | | | | | | | | | | | Year ended December 31, | | | 2016 | | 2015 | | 2014 | Expected volatility | | 56 | % | | 56 | % | | 56 | % | Average expected life of SAR (in years) | | 6.18 |
| | 6.13 |
| | 6.25 |
| Risk-free interest rate | | 1.28 | % | | 1.51 | % | | 2.12 | % | Dividend yield | | — |
| | — |
| | — |
|
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Schedule of Share-based Compensation, Nonemployee Director Stock Award Plan, Activity | The following table summarizes the activity related to DSUs (excluding activity related to the Director Plan, which ended December 31, 2014) for the years ended December 31, 2016, 2015 and 2014 are as follows: | | | | | | | | | | | Number of shares | | Weighted
average grant
date fair value | Issued and unvested as of December 31, 2013 | | 29,250 |
| | $ | 13.09 |
| Granted | | 22,500 |
| | $ | 17.63 |
| Vested | | (29,250 | ) | | $ | 13.09 |
| Issued and unvested as of December 31, 2014 | | 22,500 |
| | $ | 17.63 |
| Granted | | 90,000 |
| | $ | 13.17 |
| Vested | | (22,500 | ) | | $ | 17.63 |
| Issued and unvested as of December 31, 2015 | | 90,000 |
| | $ | 13.17 |
| Granted | | — |
| | $ | — |
| Vested | | (41,250 | ) | | $ | 13.17 |
| Forfeited | | (15,000 | ) | | $ | 13.17 |
| Issued and unvested as of December 31, 2016 | | 33,750 |
| | $ | 13.17 |
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Assumptions Used to Determine Fair Value of Stock Options | The following assumptions were used to determine the fair value of stock options granted by Actua's consolidated businesses to their employees during the year ended December 31, 2016. Due to insufficient historical data, Actua's consolidated businesses used the simplified method to determine the expected life of all stock options granted under the respective equity incentive plans. | | | | Year ended December 31, 2016 | Expected volatility | 45% - 50% | Average expected life of stock options (in years) | 5.93 - 6.25 | Risk-free interest rate | 1.42% - 1.49% | Dividend yield | — |
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