LONG-TERM DEBT (Narrative) (Details) - USD ($) $ in Thousands		6 Months Ended
	Feb. 22, 2018	Jun. 30, 2018	Jun. 30, 2017
Debt Instrument [Line Items]
Repayments of promissory note		$ 5,000	$ 0
TransRe [Member] | Monarch National Insurance Company [Member]
Debt Instrument [Line Items]
Repayments of promissory note	$ 5,000
TransRe [Member] | Monarch National Insurance Company [Member] | Interest Expense [Member]
Debt Instrument [Line Items]
Debt issuance costs (Less than $0.1 million)	$ 100