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Consolidated Statements of Total Comprehensive Income (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Income Statement [Abstract]    
Unrealized (loss) gain on securities, taxes $ (598) $ (1,708)
Gain (loss) on foreign currency translation, taxes 0 0
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, Tax 32 230
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Plan Amendments, Tax Effect $ 0 $ 0