Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 65
-Paragraph 15
-Subparagraph (g)(2)
-URI http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30)(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Related Party Transactions (Affiliated Asset Transfer) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Related Party Transaction [Line Items]
Realized investment gains (losses), net	$ (7,512)	$ (5,056)	$ 5,553	$ (11,166)
Affiliated Entity \| Prudential Annuities Life Assurance Corporation April 2019 Sale
Related Party Transaction [Line Items]
Fair Value	3,293		3,293
Book Value	2,995		2,995
APIC, Net of Tax Increase/(Decrease)	0		0
Realized investment gains (losses), net			298
Affiliated Entity \| Prudential Insurance April 2020 Purchase
Related Party Transaction [Line Items]
Fair Value	3,485		3,485
Book Value	3,320		3,320
APIC, Net of Tax Increase/(Decrease)	$ (130)		(130)
Realized investment gains (losses), net			$ 0