BENEFIT PLANS - Costs of Retirement Plans (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
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| Compensation and Retirement Disclosure [Abstract] | ||||
| Supplemental Executive Retirement Plan And Supplemental Retirement Income Plan | $ 598 | $ 578 | $ 1,312 | $ 1,157 |
| Defined Contribution Plan, Cost Recognized | 8,348 | 8,078 | 16,269 | 15,523 |
| Benefit Cost | $ 8,946 | $ 8,656 | $ 17,581 | $ 16,680 |
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- Definition Benefit Cost No definition available.
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- Definition Supplemental Executive Retirement Plan And Supplemental Retirement Income Plan. No definition available.
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- References No definition available.
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- Definition The amount of the cost recognized during the period for defined contribution plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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