LONG-TERM DEBT - (Schedule of Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total debt maturities	$ 49,251	$ 4,909
Senior Unsecured Floating Rate Notes, Due December 31, 2027 [Member]
Debt Instrument [Line Items]
Deferred financing costs	377	0
Senior Unsecured Fixed Rate Notes, Due July 1, 2022 [Member]
Debt Instrument [Line Items]
Deferred financing costs	302	0
Other Consolidated Debt from VIE, Due March 17, 2021 [Member]
Debt Instrument [Line Items]
Deferred financing costs	70	91
Unsecured Debt [Member] | Senior Unsecured Floating Rate Notes, Due December 31, 2027 [Member]
Debt Instrument [Line Items]
Total debt maturities	24,623	0
Unsecured Debt [Member] | Senior Unsecured Fixed Rate Notes, Due July 1, 2022 [Member]
Debt Instrument [Line Items]
Total debt maturities	19,698	0
Other debt [Member] | Other Consolidated Debt from VIE, Due March 17, 2021 [Member]
Debt Instrument [Line Items]
Total debt maturities	$ 4,930	$ 4,909