NATURE OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES (Employee Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans issued to principal officers, directors, or their affiliates	$ 0	$ 0	$ 0
Non-accrual employee loans	0	0
Material loans past due	0	0
Material loans written-off	0
Allowance for employee loans	$ 0	$ 0