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Derivative Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Assets |  |
Derivative instruments, included in Short-term and other investments | $ 8,694 | $ 2,501
Liabilities |  |
Fixed indexed annuities - embedded derivatives, included in Other policyholder funds | 59,393 | 39,021
Indexed universal life - embedded derivatives, included in Investment contract and life policy reserves | $ 158 | $ 14

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