Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

LONG-TERM DEBT (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended
	Feb. 22, 2018	Mar. 31, 2018	Mar. 31, 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