LOANS AND ALLOWANCE FOR LOAN LOSSES (Schedule of Provision for Credit Losses) (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2017		Mar. 31, 2016		Dec. 31, 2016
LOANS AND ALLOWANCE FOR LOAN LOSSES [Abstract]
Provision (credit)(1)	$ 581	[1]	$ 870	[1]	$ 5,269
Change in reserve for unfunded commitments	(2)		2		(11)
Provision for credit losses	$ 579		$ 872	[2],[3]	$ 5,258

[1] (1) The provision (credit) for loan losses excludes any impact for the change in the reserve for unfunded commitments, which represents management's estimate of the amount required to reflect the probable inherent losses on outstanding letters of credit and unused lines of credit. The reserve for unfunded commitments is presented within accrued interest and other liabilities on the consolidated statements of condition. At March 31, 2017 and 2016, and December 31, 2016, the reserve for unfunded commitments was $9,000, $24,000 and $11,000, respectively.

[2] (1)The consolidated statement of cash flows for the three months ended March 31, 2016 has been adjusted to reflect the adoption of ASU 2016-09 in the second quarter of 2016 effective as of January 1, 2016.

[3] (1)The consolidated statement of income for the three months ended March 31, 2016 has been adjusted to reflect the adoption of Accounting Standards Updates No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09") in the second quarter of 2016 effective as of January 1, 2016.