BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Investment in FHLB Stock) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Gain (Loss) on Securities [Line Items]
Federal Home Loan Bank (FHLB) stock	$ 31,955	$ 10,334
Federal Home Loan Bank Stock, Par Value Per Share	$ 100
Investment in Federal Home Loan Bank Stock [Member]
Gain (Loss) on Securities [Line Items]
Other than Temporary Impairment Losses, Investments	$ 0