INVESTMENTS (Major Categories of Investment Gains and Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Gain (Loss) on Securities [Line Items]
Investment gains (losses)	$ 310	$ (990)
Gains on trading securities	7	0
Other-than-temporary impairments	0	238
Realized gains on fixed maturities
Gain (Loss) on Securities [Line Items]
Investment gains (losses)	0	121
Change in fair value of equity securities
Gain (Loss) on Securities [Line Items]
Investment gains (losses)	3	(599)
Change in surrender value of company owned life insurance
Gain (Loss) on Securities [Line Items]
Investment gains (losses)	(57)	(251)
Other gains principally real estate
Gain (Loss) on Securities [Line Items]
Investment gains (losses)	0	2
Equity securities
Gain (Loss) on Securities [Line Items]
Investment gains (losses)	$ 357	$ (25)

Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 14
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Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
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