EMPLOYEE BENEFITS AND STOCK BASED COMPENSATION (Estimated Unamortized Compensation Expense Recognized in Future) (Details) $ in Thousands	Dec. 31, 2017 USD ($)
Estimated unamortized compensation expense recognized in future
2018	$ 4,446
2019	3,349
2020	1,197
2021	97
Total	9,089
Restricted Stock
Estimated unamortized compensation expense recognized in future
2018	3,539
2019	2,725
2020	1,156
2021	97
Total	7,517
Performance Stock
Estimated unamortized compensation expense recognized in future
2018	907
2019	624
2020	41
2021	0
Total	$ 1,572