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v3.19.1

Consolidated Statements Of Cash Flows (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Statement of Cash Flows [Abstract] |  |  |
Non cash net unrealized loss (gain) on investments, net of deferred tax benefit (provision) | $ 377 | $ (2,145) | $ (134)
Adjustments to postretirement benefits obligation, net of deferred tax (provision) benefit | $ (9) | $ (24) | $ 0

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- Definition The amount of deferred tax provision resulting from unrealized gains and losses during the period. + References No definition available. + Details
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