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OTHER COMPREHENSIVE LOSS - Reclassifications Out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Net gain on sale of investments | $ 0 | $ 0 | $ 0 | $ 371
Net impairment losses on available-for-sale debt securities | 0 | 0 | 0 | 12,231
Total before tax | 48,655 | (19,150) | 130,752 | 35,606
Income tax | 12,332 | (8,398) | 30,249 | (7,181)
Net income | 36,323 | (10,752) | 100,503 | 42,787
Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Net gain on sale of investments | 0 | 0 | 0 | 371
Net impairment losses on available-for-sale debt securities | 0 | 0 | 0 | (12,231)
Total before tax | 0 | 0 | 0 | (11,860)
Income tax | 0 | 0 | 0 | 0
Net income | $ 0 | $ 0 | $ 0 | $ (11,860)

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- 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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