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Stock-Based Compensation (Notes) | 3 Months Ended
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Mar. 31, 2019
Stock Based Compensation [Abstract] |
Stock Performance Rights | Stock-Based Compensation The Company recorded stock-based compensation expense of $0.4 million and $1.0 million for the first three months of 2019 and 2018, respectively. A portion of stock-based compensation is related to the change in the market value of the Company's common stock. A summary of stock-based awards activity during the three months ended March 31, 2019 follows: Stock Performance Rights ("SPRs") The Company issued 25,793 SPRs to key employees with an exercise price of $30.54 per share that cliff vest on December 31, 2021 and have a termination date of December 31, 2026. SPRs entitle the recipient to receive a cash payment equal to the excess of the market value of the Company's common stock over the SPR exercise price when the SPRs are surrendered. Restricted Stock Units ("RSUs") The Company issued 16,781 RSUs to key employees that cliff vest on December 31, 2021. Each RSU is exchangeable for one share of the Company's common stock at the end of the vesting period. Market Stock Units ("MSUs") The Company issued 39,948 MSUs to key employees that cliff vest on December 31, 2021. MSU's are exchangeable for the Company's common stock at the end of the vesting period. The number of shares of common stock that will be issued upon vesting, ranging from zero to 59,922, will be determined based upon the trailing sixty-day weighted average closing price of the Company's common stock on December 31, 2021. For the three months ended March 31, 2019 and 2018, stock options to purchase approximately 19,401 and 80,000 shares, respectively, of the Company's common stock were excluded from the computation of diluted earnings per share because they were anti-dilutive.

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- Definition Stock Based Compensation [Abstract] + References No definition available. + Details
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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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