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Stock-Based Compensation | 3 Months Ended
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Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
STOCK-BASED COMPENSATION | STOCK-BASED COMPENSATION The Company has stock incentive plans for executives and eligible employees. Stock awards include performance shares, restricted stock and stock options. Stock-based compensation expense for the three months ended March 31, 2018 and 2017 was $2.8 million and $3.3 million, respectively. At March 31, 2018, there was $4.8 million of unrecognized stock-based compensation cost which is expected to be recognized over a weighted-average remaining vesting period of 1.4 years. The following table summarizes the grants awarded during the three months ended March 31, 2018:
Grant date |  | Restricted stock |  | Grant date fair value of restricted stock |  | Stock options |  | Grant date fair value of stock options |  | Performance shares |  | Grant date fair value of performance shares
March 5, 2018 |  | 31,887 |  |  | $ | 7.84 |  |  | — |  |  | $ | — |  |  | — |  |  | $ | — |
The following options and stock appreciation rights were exercisable during the three months ended March 31, 2018:
Award Type |  | Number of Exercised Units |  | Weighted Average Exercised Price |  | Number of Exercisable Units |  | Weighted Average Exercisable Price
Stock options |  | 93,920 |  |  | $ | 1.81 |  |  | 397,651 |  |  | $ | 14.39 |
Stock appreciation rights |  | — |  |  | $ | — |  |  | 42,152 |  |  | $ | 14.14 |

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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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