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Equity Awards | 3 Months Ended
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Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Equity Awards | Equity Awards Stock Options The Company did not grant any stock option awards during the three months ended March 31, 2019. Information related to stock options at March 31, 2019 is as follows:
|  | Number of Stock Options |  | Weighted Average Option Price |  | Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value
Outstanding at January 1, 2019 |  | 206,854 |  |  | $ | 13.19 |  |  |  |  |
Granted |  | — |  |  | — |  |  |  |  |
Exercised |  | (56,854 | ) |  | 0.86 |  |  |  |  |
Cancelled |  | — |  |  | — |  |  |  |  |
Expired |  | — |  |  | — |  |  |  |  |
Outstanding at March 31, 2019 |  | 150,000 |  |  | $ | 17.87 |  |  | 7.3 |  | $ | 1,854,000 |
As of March 31, 2019, 100,000 stock options outstanding were exercisable under the Company's long-term equity incentive plans. As of March 31, 2019, there was approximately $0.1 million of unrecognized compensation cost related to stock options that is expected to be recorded over a weighted average period of 0.3 years. The Company recognized approximately $0.1 million and $0.1 million of stock-based compensation expense related to stock options during the three months ended March 31, 2019 and 2018, respectively. The stock-based compensation expense is included in selling, general and administrative expenses in the accompanying consolidated statement of income. Restricted Stock Units The Company issued 1,781 restricted stock units ("RSUs") related to director fee deferrals for the three months ended March 31, 2019. The Company allows for its non-employee independent directors to make an annual election to defer all or a portion of their directors fees and to receive the deferred amount in cash or equity. Certain of the Company's directors have elected to defer all or a portion of their directors fees and to receive the amount in Company common stock at a future date. During 2016, the Company awarded performance-based RSUs to certain Company key employees which were earned based upon the Company's total shareholder return ("TSR") relative to the TSR of the common stock of a pre-defined industry peer-group and measured over a period beginning January 1, 2016 and ending on December 31, 2018. Depending on the performance achieved, the amount of shares earned could vary from 0% of the target award to a maximum of 200% of the target award. The Company attained 139.0% of the target on a weighted average basis, resulting in an increase of 38,315 shares during the three months ended March 31, 2019. Information related to RSUs at March 31, 2019 is as follows:
|  | Number of Unvested RSUs |  | Weighted Average Grant Date Fair Value |  | Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value
Outstanding at January 1, 2019 |  | 663,128 |  |  | $ | 26.67 |  |  |  |  |
Granted |  | 40,096 |  |  | 21.01 |  |  |  |  |
Vested |  | (210,793 | ) |  | 20.77 |  |  |  |  |
Cancelled |  | (2,649 | ) |  | 26.43 |  |  |  |  |
Outstanding at March 31, 2019 |  | 489,782 |  |  | $ | 28.75 |  |  | 1.0 |  | $ | 14,806,110 |
As of March 31, 2019, there was approximately $5.8 million of unrecognized compensation cost related to unvested RSUs that is expected to be recorded over a weighted average period of 1.9 years. The Company recognized stock-based compensation expense related to RSUs of approximately $1.3 million and $1.1 million during the three months ended March 31, 2019 and 2018, respectively. The stock-based compensation expense is included in selling, general and administrative expenses in the accompanying consolidated statement of income.

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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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