INVESTMENTS - Unrealized gains and losses (Details) - Municipal Bonds [Member] - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Net Investment Income [Line Items]
Unrealized Gains	$ 866	$ 388
Unrealized Losses		$ (76)

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.

No definition available.

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