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Fair Value of Financial Instruments - Schedule of Reconciliation Fair Value Measurements Using Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net [Abstract]
Balance at beginning of year	$ 1,876,309	$ 1,855,305
Purchases of treasury stock	(6,219)	(125,814)
Contributions of treasury stock to ESOP		47,043
Share price adjustment	883,436	99,775
Transfer to permanent equity	$ (2,753,526)
Balance at end of year		$ 1,876,309

X

- Definition

Fair value measurement with unobservable inputs reconciliation recurring basis liability contributions of treasury stock to ESOP

+ References

No definition available.

+ Details

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- Definition

Fair value measurement with unobservable inputs reconciliation recurring basis liability purchases of treasury stock.

+ References

No definition available.

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- Definition

Fair value measurement with unobservable inputs reconciliation recurring basis liability share price adjustment.

+ References

No definition available.

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- Definition

Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- References

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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