Equity (Net Unrealized Investment Gains (Losses) in AOCI with Allowance for Credit Losses) (Details) $ in Thousands	9 Months Ended
Sep. 30, 2020 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 428,612
Ending balance	1,661,279
Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	429,546
Ending balance	1,662,335
With an allowance \| Net Unrealized Gains (Losses) on Investments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0
Net investment gains (losses) on investments arising during the period	46
Increase (decrease) due to non-credit related losses recognized in AOCI during the period	(60)
Impact of net unrealized investment (gains) losses on DAC and other costs	0
Impact of net unrealized investment (gains) losses on future policy benefits and other liabilities	0
Ending balance	(14)
With an allowance \| Deferred Policy Acquisition Costs and Other Costs
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0
Net investment gains (losses) on investments arising during the period	0
Increase (decrease) due to non-credit related losses recognized in AOCI during the period	0
Impact of net unrealized investment (gains) losses on DAC and other costs	693
Impact of net unrealized investment (gains) losses on future policy benefits and other liabilities	0
Ending balance	693
With an allowance \| Future Policy Benefits and Other Liabilities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0
Net investment gains (losses) on investments arising during the period	0
Increase (decrease) due to non-credit related losses recognized in AOCI during the period	0
Impact of net unrealized investment (gains) losses on DAC and other costs	0
Impact of net unrealized investment (gains) losses on future policy benefits and other liabilities	121
Ending balance	121
With an allowance \| Deferred Income Tax (Liability) Benefit
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0
Net investment gains (losses) on investments arising during the period	(10)
Increase (decrease) due to non-credit related losses recognized in AOCI during the period	13
Impact of net unrealized investment (gains) losses on DAC and other costs	(146)
Impact of net unrealized investment (gains) losses on future policy benefits and other liabilities	(25)
Ending balance	(168)
With an allowance \| Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0
Net investment gains (losses) on investments arising during the period	36
Increase (decrease) due to non-credit related losses recognized in AOCI during the period	(47)
Impact of net unrealized investment (gains) losses on DAC and other costs	547
Impact of net unrealized investment (gains) losses on future policy benefits and other liabilities	96
Ending balance	$ 632

Non Credit Portion Of Allowance for Credit Losses Of Debt Reclassification Recognized In Other Comprehensive Income

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- Definition

Other Comprehensive Income for Unrealized Investment Gain Loss related to Policyholder's account balance Arising during the Period Net of Tax

+ References

No definition available.

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- Definition

Other Comprehensive Income for Unrealized Investment (Gain) Loss related to deferred policy acquisition costs, deferred sales inducements and valuation of business acquired Arising during the Period Net of Tax

+ References

No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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- Definition

Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.

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