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Reinsurance (Tables)
12 Months Ended
Dec. 31, 2020
Reinsurance Disclosures [Abstract]  
Schedule of effects of reinsurance
The effect of reinsurance on net premiums written and earned is as follows: 
Year Ended December 31,
(In thousands)202020192018
Net premiums written:
Direct$922,851 $796,344 $696,055 
Ceded (1)(88,738)(35,499)(10,768)
Net premiums written$834,113 $760,845 $685,287 
Net premiums earned:
Direct$951,302 $812,924 $660,260 
Ceded (1)(88,738)(35,499)(10,768)
Net premiums earned$862,564 $777,425 $649,492 
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(1)Net of profit commission.
Schedule of coverages and retentions
The following tables summarizes Essent Guaranty's excess of loss reinsurance agreements as of December 31, 2020:
Vintage YearReinsurerEffective DateOptional Termination Date
2015 & 2016Radnor Re 2019-2 Ltd.June 20, 2019June 25, 2024
2017Radnor Re 2018-1 Ltd.March 22, 2018March 25, 2023(1)
2017Panel of ReinsurersNovember 1, 2018October 1, 2023(2)
2018Radnor Re 2019-1 Ltd.February 28, 2019February 25, 2026
2018Panel of ReinsurersFebruary 28, 2019February 25, 2026
2019Radnor Re 2020-1 Ltd.January 30, 2020January 25, 2027
2019Panel of ReinsurersJanuary 30, 2020January 25, 2027
2019 & 2020Radnor Re 2020-2 Ltd.October 8, 2020October 25, 2027
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(1)If the reinsurance agreement is not terminated at the optional termination date, the risk margin component of the reinsurance premium increases by 50%.
(2)If the reinsurance agreement is not terminated at the optional termination date, the reinsurance premium increases by 50%.

The following table summarizes Essent Guaranty's excess of loss reinsurance coverages and retentions as of December 31, 2020:
(In thousands)Remaining
Reinsurance in Force
Vintage YearRemaining
Insurance
in Force
Remaining
Risk
in Force
ILNOther ReinsuranceTotalRemaining
First Layer
Retention
2015 & 2016$16,329,165 $4,411,094 $216,480 $— $216,480 $207,787 
201715,856,384 4,052,481 242,123 165,167 (5)407,290 218,838 
201818,295,450 4,646,734 325,537 76,144 (6)401,681 251,262 
2019 (3)
22,137,416 5,643,954 495,889 55,102 (7)550,991 215,509 
2019 & 2020 (4)
48,570,459 12,141,563 399,159 — 399,159 465,690 
Total$121,188,874 $30,895,826 $1,679,188 $296,413 $1,975,601 $1,359,086 
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(3)Reinsurance coverage on new insurance written from January 1, 2019 through August 31, 2019.
(4)Reinsurance coverage on new insurance written from September 1, 2019 through July 31, 2020.
(5)Coverage provided immediately above the coverage provided by Radnor Re 2018-1 Ltd.
(6)Coverage provided pari-passu to the coverage provided by Radnor Re 2019-1 Ltd.
(7)Coverage provided pari-passu to the coverage provided by Radnor Re 2020-1 Ltd.
Schedule of VIE assets and total maximum exposure to loss
The following table presents total assets of each Radnor Re special purpose insurer as well as our maximum exposure to loss associated with each Radnor Re entity, representing the fair value of the embedded derivatives, using observable inputs in active markets (Level 2), included in other assets (other accrued liabilities) on our consolidated balance sheet and the estimated net present value of investment earnings on the assets in the reinsurance trusts, each as of December 31, 2020:
Maximum Exposure to Loss
(In thousands)Total VIE AssetsOn - Balance SheetOff - Balance SheetTotal
Radnor Re 2018-1 Ltd.$242,123 $462 $32 $494 
Radnor Re 2019-1 Ltd.325,537 (2,071)56 (2,015)
Radnor Re 2019-2 Ltd.216,480 (1,509)26 (1,483)
Radnor Re 2020-1 Ltd.495,889 (1,046)123 (923)
Radnor Re 2020-2 Ltd.399,159 (181)109 (72)
Total$1,679,188 $(4,345)$346 $(3,999)