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MARKETABLE SECURITIES - Sale of Securities (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Sale Of Marketable Securities [Abstract] |  |  |  |
Proceeds from sales | $ 3,957 | $ 9,457 | $ 3,957 | $ 9,457
Gross gains | 0 | 0 | 0 | 0
Gross losses | $ (22) | $ (51) | $ (22) | $ (51)

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- Definition Marketable securities, gross realized gains. + References No definition available. + Details
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- Definition Marketable securities, gross realized losses. + References No definition available. + Details
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- Definition Proceeds from Sale of Marketable Securities + References No definition available. + Details
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- Definition Sale Of Marketable Securities [Abstract] + References No definition available. + Details
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