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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Changes in AOCI by Component
Other comprehensive income		$ 21	$ 25,296
Net Unrealized Gain (Loss) on Investments
Changes in AOCI by Component
Balance at the beginning	$ 0	(21)	(25,317)
OCI before reclassifications		(2,385)	(13,268)
Amounts reclassified from AOCI		2,406	38,564
Other comprehensive income	0	21	25,296
Balance at the end	$ 0	$ 0	$ (21)

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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