ALLOWANCE FOR CREDIT LOSSES (Schedule of allowance for credit losses) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	$ 0
Balance as of March 31, 2020	2
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	159
Balance as of March 31, 2020	189
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	0
Balance as of March 31, 2020	53
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	159
Credit loss, expense (reversal)	52
Balance as of March 31, 2020	244
Cumulative Effect, Period Of Adoption, Adjustment [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	33
Debt Securities, Held-to-Maturity
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	0
Credit loss expense (reversal)	1
Balance as of March 31, 2020	2
Debt Securities, Held-to-Maturity | Cumulative Effect, Period Of Adoption, Adjustment [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	1
Premiums Receivable [Member]
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	159
Credit loss expense (reversal)	30
Balance as of March 31, 2020	189
Premiums Receivable [Member] | Cumulative Effect, Period Of Adoption, Adjustment [Member]
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	0
Reinsurance Recoverable, Net [Member]
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	0
Credit loss expense (reversal)	21
Balance as of March 31, 2020	53
Reinsurance Recoverable, Net [Member] | Cumulative Effect, Period Of Adoption, Adjustment [Member]
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	$ 32