MONY CLOSED BLOCK OF BUSINESS (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Closed block liabilities
Future policy benefits, policyholders’ account balances and other policyholder liabilities				$ 5,405,490	$ 5,836,815
Policyholder dividend obligation	$ 579,829	$ 0	$ 0	579,829	278,505
Other liabilities				7,477	11,247
Total closed block liabilities				5,992,796	6,126,567
Closed block assets
Fixed maturities, available-for-sale, at fair value				4,902,869	4,682,731
Commercial mortgage loans				68,123	72,829
Policy loans				595,738	640,134
Cash and other invested assets				45,782	44,877
Other assets				91,734	107,177
Total closed block assets				5,704,246	5,547,748
Excess of reported closed block liabilities over closed block assets				288,550	578,819
Portion of above representing accumulated other comprehensive income:
Net unrealized investments gains (losses) net of policyholder dividend obligation: $493,271 and $167,285; and net of income tax: $(103,587) and $(35,130)				0	0
Future earnings to be recognized from closed block assets and closed block liabilities				$ 288,550	$ 578,819
Policyholder dividend obligation	493,271	167,285
Policyholder dividend obligation, deferred income tax	(103,587)	(35,130)
Reconciliation of the policyholder dividend obligation
Policyholder dividend obligation, beginning balance	278,505	0
Applicable to net revenue	(24,662)	(29,907)
Change in net unrealized investment gains allocated to policyholder dividend obligation	325,986	308,412
Policyholder dividend obligation, ending balance	579,829	278,505	0
Revenues
Premiums and other income	154,034	162,288	171,117
Net investment income	201,686	206,523	202,282
Net investment gains	(2,453)	(1,603)	(1,970)
Total revenues	353,267	367,208	371,429
Benefits and other deductions
Benefits and settlement expenses	332,368	336,736	337,352
Other operating expenses	1,163	1,161	714
Total benefits and other deductions	333,531	337,897	338,066
Net revenues before income taxes	19,736	29,311	33,363
Income tax expense	3,981	6,081	7,006
Net revenues	$ 15,755	$ 23,230	$ 26,357

Represents the amount of cash and other invested assets held by the closed block.

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Amount of unrealized gain (loss) on investments that were allocated to the closed block, net of deferred tax benefits.

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Amount of deferred income tax expense (benefit) pertaining to policyholder dividend obligation.

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Represents the amount of future policy benefits, policyholders' account balances and other to be paid as of the balance sheet date to policyholders of contracts in the closed block.

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Represents the amount of premiums and other revenues impacting an insurance entity's segregated group of participating or dividend-paying policies and contracts along with the assets allocated to them (known as a closed block).

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The sum of cash, cash equivalents, investments and other assets allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block.

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Fair value of investments in debt securities that are deemed to be available for sale that are allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block. Change in fair of such securities is a component of change in other comprehensive income in the period, which is reflected in the closed block disclosure.

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Carrying amount of investments in mortgage loans on real estate allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block.

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Amount of other assets held by the closed block. Excludes other investments.

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Carrying amount of loans to policy holders secured by benefits under insurance policies that are allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block.

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The carrying amount of closed block liabilities in excess of the carrying amount of closed block assets at the date of demutualization (adjusted to eliminate the impact of related amounts in accumulated other comprehensive income).

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Amount of increase (decrease) in the closed block dividend obligation from the unrealized gain (loss) on investments allocated to the closed block.

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Amount of increase (decrease) in the closed block dividend obligation from the effect on dividends to policyholders on the net results of operations for the period of the closed block.

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The net increase or decrease in the period in the fair value of the fixed maturity and equity investments designated as available for sale as of the balance sheet date that were allocated to the segregated group of participating or dividend-paying policies and contracts identified as a closed block. Also a component of change in other comprehensive income in the period, which is reflected in the closed block disclosure.

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For the segregated group of participating or dividend-paying policies and contracts along with the assets backing them (known as a closed block), the total of future policy benefits, policyholder account balance, policyholder dividend obligation and any other closed block liabilities.

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Amount of liabilities allocated to the closed block, classified as other.

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The liability as of the balance sheet date for the excess of the cumulative actual closed block earnings over the cumulative expected (actuarially determined) closed block earnings (each) for the period from the actuarial calculation date to the date of measurement. The excess will result in future dividends to closed block policyholders, unless offset by less favorable than expected future performance of the closed block. The policyholder dividend obligation, which may not have a negative balance, recognizes that a portion of earnings in certain cases will not inure to the stockholders of the insurance entity.

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Amount after tax of closed block income from continuing operations.

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Amount of benefits, claims and expenses that are related to an insurance entity's segregated group of participating or dividend-paying policies and contracts along with the assets allocated to them (known as a closed block). Includes, but is not limited to, death benefits, matured endowments, participating dividends, general expenses and deferred acquisition costs related to the closed block.

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The amount of income tax expense or benefit allocated to the operations of the closed block for the period.

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Income for the period from the investments allocated to an insurance entity's segregated group of participating or dividend-paying policies and contracts (known as a closed block), net of investment expenses, which are typically reported in a table of closed block operations.

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Amount of expense classified as other allocated to the closed block.

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An expense for the period for estimated policy claims in an insurance entity's segregated group of participating or dividend-paying policies and contracts along with the assets allocated to them (known as a closed block), as typically reported in a table of closed block operations as part of summarized financial data.

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Gains and losses realized for the period from the investments allocated to an insurance entity's segregated group of participating or dividend-paying policies and contracts (known as a closed block).

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The revenues less expenses from operations of the closed block during the period, before income taxes allocated thereto.

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Total revenues from an insurance company's segregated group of participating or dividend-paying policies and contracts along with the assets allocated to them (known as a closed block).

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The difference between the liabilities of and the assets allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block.

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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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