LONG-TERM DEBT (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Debt Instrument [Line Items]
Long-term borrowings	$ 71,868	$ 78,148	$ 81,742
Unsecured Revolving Loan [Member]
Debt Instrument [Line Items]
Credit Agreement borrowing capacity	$ 25,000
Maturity date	Aug. 08, 2015
Multi-Draw Term Loan [Member]
Debt Instrument [Line Items]
Credit Agreement borrowing capacity	$ 60,000
Maturity date	Aug. 08, 2018
Long-Term Borrowings From U.S. Bank [Member]
Debt Instrument [Line Items]
Long-term borrowings	$ 41,900	$ 48,200
Long-Term Borrowings From FHLB [Member]
Debt Instrument [Line Items]
Long-term borrowings	$ 30,000