STOCK BASED AND DEFERRED COMPENSATION - Summary of Compensation Expense and Stock Award Activity (Details) - USD ($) $ in Thousands |
3 Months Ended | |
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Mar. 31, 2018 |
Mar. 31, 2017 |
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| Summary of compensation expense and stock award activity | ||
| Stock-based compensation expense (in dollars) | $ 5,209 | $ 3,295 |
| Restricted Stock [Member] | ||
| Summary of compensation expense and stock award activity | ||
| Restricted stock awards vested (includes performance-based awards) (in shares) | 301,575 | 283,574 |
| Non-vested shares [Member] | ||
| Summary of compensation expense and stock award activity | ||
| Non-vested shares granted (in shares) | 306,164 | 416,500 |
| Performance-based non-vested shares [Member] | ||
| Summary of compensation expense and stock award activity | ||
| Non-vested shares granted (in shares) | 157,637 | 154,120 |
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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