STOCK BASED AND DEFERRED COMPENSATION - Summary of Additional Information Regarding Stock Plan (Details) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2019 |
Dec. 31, 2018 |
|||
| Summary of stock based compensation agreements | ||||
| Unrecognized stock-based compensation cost | $ 24,041 | $ 24,954 | ||
| Weighted average years expense recognition period | 2 years 5 months 1 day | 2 years 2 months 26 days | ||
| Total stock-based awards outstanding (in shares) | [1] | 1,269,806 | 1,301,745 | |
| Payout percentage | 100.00% | |||
| ||||
| X | ||||||||||
- Definition Share based compensation arrangement by share based payment award number of shares outstanding. No definition available.
|
| X | ||||||||||
- Definition Share Based Compensation Arrangement, Payout Percentage No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|