UNSECURED BORROWINGS - Schedule of Subordinated Note Balances and Related Weighted Average Interest Rates (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Borrowings Outstanding	$ 98,191	$ 98,090
Effective interest rate	7.75%	7.77%
October 2035 [Member]
Debt Instrument [Line Items]
Borrowings Outstanding	$ 34,315	$ 34,276
Effective interest rate	7.90%	7.91%
Junior subordinated notes, maturity period	Oct. 31, 2035
Face amount of junior subordinated notes	$ 35,000
December 2035 [Member]
Debt Instrument [Line Items]
Borrowings Outstanding	$ 39,320	$ 39,282
Effective interest rate	7.66%	7.67%
Junior subordinated notes, maturity period	Dec. 31, 2035
Face amount of junior subordinated notes	$ 40,000
September 2036 [Member]
Debt Instrument [Line Items]
Borrowings Outstanding	$ 24,556	$ 24,532
Effective interest rate	7.70%	7.71%
Junior subordinated notes, maturity period	Sep. 30, 2036
Face amount of junior subordinated notes	$ 25,000