INVESTMENTS (Major Categories of Investment Gains and Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Gain (Loss) on Investments [Line Items]
Net investment gains (losses)	$ 2,120	$ (264)
Realized gains on fixed maturities
Gain (Loss) on Investments [Line Items]
Net investment gains (losses)	10	81
Gains (losses) on trading securities
Gain (Loss) on Investments [Line Items]
Net investment gains (losses)	3	0
Change in fair value of equity securities
Gain (Loss) on Investments [Line Items]
Net investment gains (losses)	126	(206)
Change in surrender value of company owned life insurance
Gain (Loss) on Investments [Line Items]
Net investment gains (losses)	189	(139)
Realized gain on company owned life insurance
Gain (Loss) on Investments [Line Items]
Net investment gains (losses)	$ 1,792	$ 0

- Definition

This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments.

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