FAIR VALUE OF FINANCIAL INSTRUMENTS - Gains (Losses) Recorded (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Investment [Line Items] | |||
| Realized and unrealized gain on investments | $ (6,243) | $ (685) | $ 22,264 |
| Measured on a Recurring Basis | Level 3 | |||
| Investment [Line Items] | |||
| Realized and unrealized gain on investments | 0 | 11,237 | |
| Impairment (reversal) | 0 | (110) | |
| Total | 0 | 11,127 | |
| Realized and unrealized gain on investments, net, from investments transferred into Level 3 during the period | $ 0 | $ 0 | |
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- Definition Gain (Loss) on Investments Transferred No definition available.
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- References No definition available.
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- Definition This item represents the amount of the total realized and unrealized gains or losses for the period which are included in the statement of income (or changes in net assets); the fair value of which assets and liabilities was or is measured on a recurring basis using significant unobservable inputs (Level 3). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 and losses recognized for other than temporary impairments (OTTI) of the subject investments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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