INVESTMENTS (Net Realized Gains (Losses) by Major Investment Category (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]
Gross realized and unrealized gains:	$ 1,129	$ 3,039	$ 2,505	$ 4,163
Gross realized and unrealized losses:	(921)	(391)	(3,349)	(1,620)
Net realized and unrealized gains (losses) on investments	208	2,648	(844)	2,543
Debt Securities [Member]
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]
Gross realized and unrealized gains:	41	304	264	873
Gross realized and unrealized losses:	(877)	(118)	(2,318)	(1,209)
Equity Securities [Member]
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]
Gross realized and unrealized gains:	1,088	2,735	2,241	3,290
Gross realized and unrealized losses:	$ (44)	$ (273)	$ (1,031)	$ (411)

This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563

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