Fair Value of Assets and Liabilities (Quantitative Info for Level 3 Inputs) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2020	Dec. 31, 2019
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Corporate securities	$ 5,065	$ 5,139
Future policy benefits	3,425,560	2,302,959
Policyholders’ account balances	2,477,893	2,424,120
Fair Value, Measurements, Recurring
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Future policy benefits	1,741,924	760,558
Policyholders’ account balances	143,242	133,793
Derivative Asset, Collateral, Obligation to Return Cash, Offset	$ 0	0
Level 3 \| Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Policyholder Age	45 years
Level 3 \| Minimum \| Future policy benefits
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortality rate	0.00%
Level 3 \| Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Policyholder Age	90 years
Level 3 \| Fair Value, Measurements, Recurring
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Future policy benefits	$ 1,741,924	760,558
Policyholders’ account balances	$ 143,242	$ 133,793
Level 3 \| Internal \| Minimum \| Discounted cash flow \| Future policy benefits
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	1.00%	1.00%
Spread over LIBOR	0.17%	0.10%
Utilization rate	39.00%	43.00%
Withdrawal rate (greater than maximum)	76.00%	78.00%
Mortality rate	0.00%	0.00%
Equity volatility curve	18.00%	13.00%
Level 3 \| Internal \| Minimum \| Discounted cash flow \| Policyholders' account balances
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	1.00%	1.00%
Spread over LIBOR	0.17%	0.10%
Mortality rate	0.00%	0.00%
Equity volatility curve	18.00%	10.00%
Level 3 \| Internal \| Minimum \| Discounted cash flow \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	2.28%
Level 3 \| Internal \| Maximum \| Discounted cash flow \| Future policy benefits
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	20.00%	18.00%
Spread over LIBOR	1.69%	1.23%
Utilization rate	96.00%	97.00%
Withdrawal rate (greater than maximum)	100.00%	100.00%
Mortality rate	15.00%	15.00%
Equity volatility curve	29.00%	23.00%
Level 3 \| Internal \| Maximum \| Discounted cash flow \| Policyholders' account balances
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	6.00%	6.00%
Spread over LIBOR	1.69%	1.23%
Mortality rate	24.00%	24.00%
Equity volatility curve	35.00%	23.00%
Level 3 \| Internal \| Maximum \| Discounted cash flow \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	2.58%
Level 3 \| Internal \| Weighted Average \| Discounted cash flow \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	2.45%
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Future policy benefits
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Future policy benefits	$ 1,741,924	$ 760,558
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Policyholders' account balances
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Policyholders’ account balances	143,242	133,793
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Corporate securities	20,232
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Reinsurance recoverables
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Reinsurance recoverables	$ 1,741,924	$ 760,558

Fair Value Inputs Discount Rates

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Fair Value Inputs Equity Volatility Curve

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Actuarially determined assumption around contract lapse rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts.

+ References

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Actuarially determined assumption around client mortality rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts.

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Fair Value Inputs Spread Over Libor

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Actuarially determined assumption around utilization rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts.

+ References

No definition available.

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Actuarially determined assumption around withdrawal rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts.

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Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The aggregate amount of policy reserves (provided for future obligations including unpaid claims and claims adjustment expenses) and policy benefits (liability for future policy benefits) as of the balance sheet date; grouped amount of all the liabilities associated with the company's insurance policies.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of investment in marketable security.

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Amount due to policyholders for funds held that are returnable under the terms of insurance contracts, classified as other.

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