ALLOWANCES FOR CREDIT LOSS (Schedule of allowance for credit loss) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	$ 159
Balance as of September 30, 2020	118
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	0
Balance as of September 30, 2020	52
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	159
Credit loss, expense (reversal)	(22)
Balance as of September 30, 2020	170
Cumulative Effect, Period of Adoption, Adjustment
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 September 30, 2020	0
Debt Securities, Held-to-Maturity | Cumulative Effect, Period of Adoption, Adjustment
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	1
Premiums Receivable
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	159
Credit loss expense (reversal)	(41)
Balance as of September 30, 2020	118
Premiums Receivable | Cumulative Effect, Period of Adoption, Adjustment
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	0
Reinsurance Recoverable, Net
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	0
Credit loss expense (reversal)	20
Balance as of September 30, 2020	52
Reinsurance Recoverable, Net | Cumulative Effect, Period of Adoption, Adjustment
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2019	$ 32