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Stock-Based Compensation | 12 Months Ended
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Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Compensation | STOCK-BASED COMPENSATION The Company has equity awards outstanding under two stock-based compensation plans; the 2015 Equity Incentive Plan (the "2015 Plan") and the 2006 Equity Compensation Plan, as amended and restated (the "2006 Plan"). These plans were primarily established to enhance the Company’s ability to attract, retain and motivate employees. The Company’s Board of Directors or, upon delegation, the Compensation Committee of the Board of Directors (“Compensation Committee”) has exclusive authority to select employees, advisors and others, including directors, to receive awards and to establish the terms and conditions of each award made pursuant to the Company’s stock-based compensation plans. The 2015 Plan, approved by the Company’s shareholders in May 2015, was established to provide the Company with flexibility to select from various equity-based performance compensation methods, and to be able to address changing accounting and tax rules and corporate governance practices by optimally utilizing performance based compensation. The 2015 Plan did not increase the number of shares of common stock available for awards under the 2006 Plan. The 2006 Plan, approved by the Company’s shareholders in May 2006 and May 2014, was established to consolidate into one plan the benefits available under all other than existing share-based award plans. The 2006 Plan continues with respect to awards made prior to June 2015. All shares of common stock available for future grant under the 2006 Plan were transferred into the 2015 Plan. At December 31, 2017, there were 1,954,046 common shares available for future grant under the 2015 Plan. As of December 31, 2017, all outstanding stock based compensation awards are for shares of Class A common stock. Stock Options. All options granted have an exercise price equal to fair market value, which is currently defined as the closing sales price for the stock as quoted on the NASDAQ Stock Market for the last market trading day preceding the date that the Company’s Board of Directors awards the benefit. Options may be subject to vesting as determined by the Company's Board of Directors or Compensation Committee, and can be exercised for periods of up to ten years from the date of grant. No stock option awards were granted in 2017 or 2016. All outstanding stock option awards were fully vested as of December 31, 2016. As such, there was no compensation expense or related income tax benefits recognized related to stock option awards in 2017. Compensation expense related to stock option awards of $0.04 million and $0.48 million was included in benefits on the Company’s consolidated statements of income for the years ended December 31, 2016 and 2015, respectively and the related income tax benefits recognized for the years ended December 31, 2016 and 2015 were $0.02 million and $0.18 million, respectively. The following table summarizes stock option activity under the Company’s active stock option plans for the year ended December 31, 2017:
| Number of Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contract Life
Outstanding options, beginning of year | 940,843 |  |  | $ | 16.77 |  |  |
Exercised | (285,887 | ) |  | 18.15 |  |  |
Forfeited | (12,701 | ) |  | 17.86 |  |  |
Outstanding options, end of year | 642,255 |  |  | $ | 16.13 |  |  | 2.34 years
Outstanding options exercisable, end of year | 642,255 |  |  | $ | 16.13 |  |  | 2.34 years
The total intrinsic value of fully-vested stock options outstanding as of December 31, 2017 was $15.4 million. The total intrinsic value of options exercised was $6.3 million, $5.6 million and $3.9 million during the years ended December 31, 2017, 2016 and 2015, respectively. The actual tax benefit realized for the tax deduction from option exercises totaled $2.0 million, $2.1 million and $1.5 million for the years ended December 31, 2017, 2016 and 2015, respectively. The Company received cash of $2.4 million, $4.7 million and $3.4 million from stock option exercises during the years ended December 31, 2017, 2016 and 2015, respectively. The Company redeemed common stock with aggregate values of $2.8 million, $3.1 million and $2.5 million tendered in payment for stock option exercises during the years ended December 31, 2017, 2016 and 2015, respectively. Restricted Stock Awards. Common stock issued under the Company’s restricted stock plan may not be sold or otherwise transferred until restrictions have lapsed or performance objectives have been obtained. During the vesting periods, participants have voting rights and receive dividends on all time restricted shares and vesting performance restricted shares. Upon termination of employment, common shares upon which restrictions have not lapsed must be returned to the Company. All restricted share awards are classified as equity awards. The fair value of equity-classified restricted stock awards is amortized as compensation expense on a straight-line basis over the period restrictions lapse or performance goals are met. Compensation expense related to restricted stock awards of $3.3 million, $3.9 million and $2.9 million was included in benefits on the Company’s consolidated statements of income for the years ended December 31, 2017, 2016 and 2015, respectively. Related income tax benefits recognized for the years ended December 31, 2017, 2016 and 2015 were $0.6 million, $1.5 million and $1.1 million, respectively. The following table presents information regarding the Company’s restricted stock as of December 31, 2017:
| Number of Shares |  | Weighted-Average Measurement Date Fair Value
Restricted stock, beginning of year | 317,055 |  |  | $ | 26.22 |
Granted | 140,246 |  |  | 41.46 |
Vested | (111,224 | ) |  | 26.14 |
Forfeited | (53,571 | ) |  | 27.96 |
Restricted stock, end of year | 292,506 |  |  | $ | 33.24 |
During 2017, the Company issued 140,246 restricted common shares. The 2017 restricted share awards included 35,634 performance restricted shares, of which 17,817 vest in varying percentages upon achievement of defined return on equity performance goals, and 17,817 vest in varying percentages upon achievement of defined total return to shareholder goals. Vesting of the performance restricted shares is also contingent on employment as of December 31, 2019. Additionally, 104,612 time-restricted shares were issued during 2017 that vest one-third on each annual anniversary of the grant date through February 15, 2020, contingent on continued employment through the vesting date. As of December 31, 2017, there was $5.8 million of unrecognized compensation cost related to non-vested, restricted stock awards expected to be recognized over a period of 1.85 years.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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