SUMMARY OF INVESTMENTS (Net Realized Investment Gains and Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	$ 6,103	$ 2,846	$ 7,270
AVAILABLE-FOR-SALE
Proceeds from sales	14,322	11,543	3,091
Gross realized gains	985	1,134	900
Gross realized losses	(639)	0	(56)
Fixed Maturities \| Available-for-sale
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	2,160	3,294	3,353
Fixed Maturities \| Change in fair value
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	189	(1,353)	609
Fixed Maturities \| Sales
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	931	1,381	1,339
Fixed Maturities \| Other-than-temporary-impairment charges
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	0	(1,300)	0
Equity securities \| Available-for-sale
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	2,359	2,521	1,732
Equity securities \| Change in fair value
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	301	(448)	238
Equity securities \| Sales
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	(6)	66	(1)
Other long-term investments
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	0	(1,315)	0
Cash equivalents
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	$ 169	$ 0	$ 0

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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