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Stock-Based Compensation Plans (Tables) | 9 Months Ended
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Sep. 30, 2015
Summary of Stock Options Issued Pursuant to Stock Incentive Plans | A summary of stock options issued pursuant to the Company’s stock incentive plans is as follows:
|  | Number of Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term (Years) |  |  | Aggregate Intrinsic Value of In-the-Money Options |
Outstanding as of December 31, 2014 |  |  | 5,282,693 |  |  | $ | 12.06 |  |  |  |  |  |  |  |  |
Granted |  |  | 2,055,514 |  |  |  | 19.12 |  |  |  |  |  |  |  |  |
Exercised |  |  | (1,108,965 | ) |  |  | 10.42 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (365,286 | ) |  |  | 19.08 |  |  |  |  |  |  |  |  |
Expired |  |  | (593 | ) |  |  | 20.51 |  |  |  |  |  |  |  |  |
Outstanding as of September 30, 2015 |  |  | 5,863,363 |  |  | $ | 14.41 |  |  |  | 6.53 |  |  | $ | 39,394,952 |
Exercisable as of September 30, 2015 |  |  | 3,285,184 |  |  | $ | 10.85 |  |  |  | 4.68 |  |  | $ | 33,735,724 |
Summary of Nonvested Restricted Share Awards and Changes During Period | A summary of nonvested restricted share awards (“RSAs”) as of September 30, 2015 and changes during the period are as follows:
Nonvested Restricted Share Awards |  | Number of Restricted Share Awards |  |  | Weighted-Average Grant Date Fair Value |
Nonvested as of December 31, 2014 |  |  | 183,209 |  |  | $ | 17.11 |
Granted |  |  | 118,978 |  |  |  | 23.80 |
Vested |  |  | (158,217 | ) |  |  | 17.20 |
Nonvested as of September 30, 2015 |  |  | 143,970 |  |  | $ | 22.54 |
Online Resources Corporation [Member] |
Summary of Stock Options Issued Pursuant to Stock Incentive Plans | A summary of transaction stock options issued pursuant to the Company’s stock incentive plans is as follows:
|  | Number of Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term (Years) |  |  | Aggregate Intrinsic Value of In-the-Money Options |
Outstanding as of December 31, 2014 |  |  | 46,512 |  |  | $ | 36.73 |  |  |  |  |  |  |  |  |
Exercised |  |  | (240 | ) |  |  | 13.92 |  |  |  |  |  |  |  |  |
Expired |  |  | (8,187 | ) |  |  | 45.07 |  |  |  |  |  |  |  |  |
Outstanding as of September 30, 2015 |  |  | 38,085 |  |  | $ | 35.09 |  |  |  | 1.18 |  |  | $ | 48,319 |
Exercisable as of September 30, 2015 |  |  | 38,085 |  |  | $ | 35.09 |  |  |  | 1.18 |  |  | $ | 48,319 |
Black-Scholes Option-Pricing Model [Member] |
Estimated Fair Value of Options Granted Pricing Model with Weighted-Average Assumptions | The fair value of options granted during the nine months ended September 30, 2015 and 2014 was estimated on the date of grant using the Black-Scholes option-pricing model, a pricing model acceptable under U.S. GAAP, with the following weighted-average assumptions:
|  | Nine Months Ended September 30, 2015 |  |  | Nine Months Ended September 30, 2014 |
Expected life (years) |  |  | 5.93 |  |  |  | 5.93 |
Interest rate |  |  | 1.4 | % |  |  | 1.8 | %
Volatility |  |  | 32.1 | % |  |  | 45.2 | %
Dividend yield |  |  | — |  |  |  | — |
Monte Carlo Simulation [Member] |
Estimated Fair Value of Options Granted Pricing Model with Weighted-Average Assumptions | With respect to options granted that vest based on the achievement of certain market conditions, the grant date fair value of such options was estimated using the following weighted-average assumptions:
|  | Nine Months Ended September 30, 2015 |
Expected life (years) |  |  | 7.50 |
Interest rate |  |  | 1.7 | %
Volatility |  |  | 41.9 | %
Dividend yield |  |  | — |
LTIP Performance Shares [Member] |
Summary of Nonvested Performance-Based Share Awards and Changes During Period | A summary of nonvested long-term incentive program performance share awards (“LTIP performance shares”) outstanding as of September 30, 2015 and changes during the period are as follows:
Nonvested LTIP Performance Shares |  | Number of Shares at Expected Attainment |  |  | Weighted- Average Grant Date Fair Value |
Nonvested as of December 31, 2014 |  |  | 1,145,916 |  |  | $ | 14.84 |
Granted |  |  | 1,025,863 |  |  |  | 19.12 |
Forfeited |  |  | (195,919 | ) |  |  | 19.41 |
Vested |  |  | (548,671 | ) |  |  | 9.75 |
Change in expected attainment for 2011 and 2013 grants |  |  | (528,303 | ) |  |  | 19.44 |
Nonvested as of September 30, 2015 |  |  | 898,886 |  |  | $ | 19.13 |
S1 Corporation 2003 Stock Incentive Plan [Member] |
Summary of Nonvested Restricted Share Awards and Changes During Period | A summary of nonvested Transaction RSAs issued under the S1 Corporation 2003 Stock Incentive Plan as of September 30, 2015 and changes during the period are as follows:
Nonvested Transaction Restricted Share Awards |  | Number of Restricted Share Awards |  |  | Weighted-Average Grant Date Fair Value |
Nonvested as of December 31, 2014 |  |  | 17,565 |  |  | $ | 11.80 |
Forfeited |  |  | (4,364 | ) |  |  | 11.80 |
Nonvested as of September 30, 2015 |  |  | 13,201 |  |  | $ | 11.80 |
Performance-Based Restricted Share Awards [Member] |
Summary of Nonvested Performance-Based Share Awards and Changes During Period | A summary of nonvested PBRSAs as of September 30, 2015 and changes during the period are as follows:
Nonvested Performance-Based Restricted Share Awards |  | Number of Performance-Based Restricted Share Awards |  |  | Weighted-Average Grant Date Fair Value |
Nonvested as of December 31, 2014 |  |  | — |  |  | $ | — |
Granted |  |  | 978,365 |  |  |  | 23.45 |
Forfeited |  |  | (32,520 | ) |  |  | 24.41 |
Nonvested as of September 30, 2015 |  |  | 945,845 |  |  | $ | 23.42 |

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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