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Stock-based Compensation Plan | 12 Months Ended
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Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-based Compensation Plan | Stock-based Compensation Plan The Company’s stock-based compensation plan, The 2015 Stock Incentive Plan, provides incentives and awards to select employees and directors of the Company and permits the granting of stock options, share appreciation rights, restricted shares, restricted share units, unrestricted shares and performance awards. At December 31, 2018, the number of shares available to award to employees and directors under the 2015 Stock Incentive Plan was 2,139,518. During 2018, the Company also assumed a stock-based compensation plan through the Collegiate acquisition. This plan has an insignificant amount of stock options outstanding at December 31, 2018 and no additional shares may be awarded from the plan. Restricted Stock Awards The Company has awarded restricted stock to select employees and directors under the 2015 Stock Incentive Plan. Common stock is issued as vesting restrictions lapse, which may be immediately or according to the terms of a vesting schedule. Restricted stock awards may not be sold, pledged or otherwise transferred until restrictions have lapsed. The recipient does not have the right to vote or to receive dividends until the restricted stock award has vested. The fair value of the restricted stock awarded is the closing price of the Company’s common stock on the award date. Compensation expense related to restricted stock awards for the years ended December 31, 2018, 2017 and 2016 was $3,703,000, $3,764,000 and $2,870,000, respectively, and the recognized income tax benefit related to this expense was $934,000, $1,452,000 and $1,112,000. As of December 31, 2018, total unrecognized compensation expense of $4,013,000 related to restricted stock awards is expected to be recognized over a weighted-average period of 2.0 years. The fair value of restricted stock awards that vested during the years ended December 31, 2018, 2017 and 2016 was $3,319,000, $3,746,000 and $2,624,000, respectively, and the income tax benefit related to these awards was $1,126,000, $1,998,000 and $1,053,000, respectively. Upon vesting of restricted stock awards, the shares are issued from the Company’s authorized stock balance. The following table summarizes the restricted stock award activity for the year ended December 31, 2018:
| Restricted Stock |  | Weighted- Average Grant Date Fair Value
Non-vested at December 31, 2017 | 183,178 |  |  | $ | 29.84 |
Granted | 114,366 |  |  | 39.92 |
Vested | (111,273 | ) |  | 29.82 |
Forfeited | (4,288 | ) |  | 37.64 |
Non-vested at December 31, 2018 | 181,983 |  |  | 36.03 |
The average remaining contractual term on non-vested restricted stock awards at December 31, 2018 is 0.9 years. The aggregate intrinsic value of the non-vested restricted stock awards at December 31, 2018 was $7,210,000.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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