Reserve for Loss and Loss Adjustment Expenses - Incurred losses and LAE, Net of Reinsurance and Cumulative Paid Losses and LAE, Net of Reinsurance (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Jul. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 30, 2010
Claims Development [Line Items]
Impact of LPT/ADC	$ 592,571	$ 623,422
Reserve for loss and LAE	1,893,299	2,439,907		$ 3,126,134
Total net reserves	1,300,728
Diversified Reinsurance
Claims Development [Line Items]
Total net reserves												$ 98,827
AmTrust Reinsurance
Claims Development [Line Items]
Impact of LPT/ADC			$ 445,000
International | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	524,852
Total IBNR	13,459
Impact of LPT/ADC	4,658
Cumulative paid loss and LAE, net of reinsurance	463,697
Reserve for loss and LAE	65,813
Total net reserves	61,155
International | Accident Year 2010 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	87,623	87,511		86,470	$ 86,777	$ 84,777	$ 82,702	$ 84,321	$ 84,570	$ 84,642	$ 85,125
Total IBNR	749
Cumulative paid loss and LAE, net of reinsurance	61,541	60,353		58,916	57,234	55,754	54,239	52,650	50,912	45,772	36,257
International | Accident Year 2011 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	52,580	52,621		52,662	52,416	52,037	52,207	52,249	52,063	52,042	53,559
Total IBNR	(12)
Cumulative paid loss and LAE, net of reinsurance	52,929	52,837		52,772	52,658	52,517	52,284	51,863	50,618	48,866	26,454
International | Accident Year 2012 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	52,838	52,909		52,957	53,238	52,977	52,895	52,788	52,501	54,357
Total IBNR	47
Cumulative paid loss and LAE, net of reinsurance	48,261	48,169		48,156	48,042	47,459	47,130	46,035	43,637	25,489
International | Accident Year 2013 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	55,612	55,682		55,293	55,072	54,472	54,970	53,644	48,443
Total IBNR	(160)
Cumulative paid loss and LAE, net of reinsurance	50,472	50,145		50,067	49,852	49,381	48,033	45,538	26,170
International | Accident Year 2014 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	48,085	48,346		48,270	48,497	48,595	48,714	42,870
Total IBNR	173
Cumulative paid loss and LAE, net of reinsurance	46,280	46,208		46,101	45,843	44,612	42,325	23,985
International | Accident Year 2015 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	44,201	44,361		44,345	44,908	44,399	42,979
Total IBNR	(461)
Cumulative paid loss and LAE, net of reinsurance	43,395	43,099		42,680	41,648	39,569	21,935
International | Accident Year 2016 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	40,511	40,114		40,155	40,817	38,793
Total IBNR	(4)
Cumulative paid loss and LAE, net of reinsurance	39,968	39,342		38,578	36,744	22,596
International | Accident Year 2017 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	34,173	35,292		36,366	36,914
Total IBNR	(437)
Cumulative paid loss and LAE, net of reinsurance	36,314	35,515		33,701	19,240
International | Accident Year 2018 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	43,406	43,148		45,194
Total IBNR	44
Cumulative paid loss and LAE, net of reinsurance	38,930	37,467		20,843
International | Accident Year 2019 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	37,895	36,802
Total IBNR	1,644
Cumulative paid loss and LAE, net of reinsurance	29,825	17,034
International | Accident Year 2020 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	27,928
Total IBNR	11,876
Cumulative paid loss and LAE, net of reinsurance	15,782
European Capital Solutions | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	59,092
Total IBNR	13,318
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	31,253
Reserve for loss and LAE	27,839
Total net reserves	27,839
European Capital Solutions | Accident Year 2016 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	6,290	5,946		5,696	5,282	5,203
Total IBNR	34
Cumulative paid loss and LAE, net of reinsurance	5,105	4,965		3,544	2,510	849
European Capital Solutions | Accident Year 2017 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	9,256	9,587		10,727	9,261
Total IBNR	688
Cumulative paid loss and LAE, net of reinsurance	6,917	6,158		4,387	2,077
European Capital Solutions | Accident Year 2018 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	26,623	25,992		24,035
Total IBNR	7,249
Cumulative paid loss and LAE, net of reinsurance	12,987	6,230		3,397
European Capital Solutions | Accident Year 2019 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	16,664	16,273
Total IBNR	5,219
Cumulative paid loss and LAE, net of reinsurance	6,226	5,945
European Capital Solutions | Accident Year 2020 | Diversified Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	259
Total IBNR	128
Cumulative paid loss and LAE, net of reinsurance	18
Workers' Compensation | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	3,695,584
Total IBNR	289,791
Impact of LPT/ADC	396,229
Cumulative paid loss and LAE, net of reinsurance	3,089,486
All outstanding liabilities prior to 2008, net of reinsurance	249
Reserve for loss and LAE	606,347
Total net reserves	210,118
Workers' Compensation | Accident Year 2008 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	86,117	83,952		84,710	83,622	83,039	82,301	81,240	82,438	81,493	80,800
Total IBNR	2,665
Impact of LPT/ADC	2,529
Cumulative paid loss and LAE, net of reinsurance	82,286	82,709		82,436	81,159	79,230	78,161	77,370	76,018	72,823	68,400
Workers' Compensation | Accident Year 2009 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	109,021	109,664		110,175	107,165	105,901	106,204	109,213	103,864	102,245	102,240
Total IBNR	1,370
Impact of LPT/ADC	3,086
Cumulative paid loss and LAE, net of reinsurance	103,771	102,877		101,823	100,103	98,811	96,396	93,425	89,462	83,464	71,963
Workers' Compensation | Accident Year 2010 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	126,621	127,381		127,215	123,968	124,073	125,020	120,243	118,209	113,880	106,799
Total IBNR	6,602
Impact of LPT/ADC	5,720
Cumulative paid loss and LAE, net of reinsurance	114,730	116,332		115,959	115,014	114,639	108,171	103,280	95,120	82,614	61,322
Workers' Compensation | Accident Year 2011 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	141,272	139,685		138,600	135,379	133,916	133,995	132,728	130,712	125,549	104,923
Total IBNR	6,624
Impact of LPT/ADC	7,942
Cumulative paid loss and LAE, net of reinsurance	129,408	125,843		124,315	122,579	115,966	114,107	105,584	91,414	69,357	33,089
Workers' Compensation | Accident Year 2012 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	192,263	188,879		192,087	181,616	172,692	171,040	173,946	168,016	136,960
Total IBNR	11,706
Impact of LPT/ADC	12,939
Cumulative paid loss and LAE, net of reinsurance	172,251	168,154		164,512	158,807	150,543	138,706	119,059	88,382	45,030
Workers' Compensation | Accident Year 2013 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	281,580	273,571		276,249	261,915	242,447	238,392	245,765	237,019
Total IBNR	18,079
Impact of LPT/ADC	19,411
Cumulative paid loss and LAE, net of reinsurance	248,103	234,342		227,502	216,527	199,300	168,785	121,182	56,249
Workers' Compensation | Accident Year 2014 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	449,374	455,521		457,363	419,748	382,260	365,515	379,589
Total IBNR	35,147
Impact of LPT/ADC	37,364
Cumulative paid loss and LAE, net of reinsurance	383,529	370,176		355,414	321,258	268,467	189,954	69,512
Workers' Compensation | Accident Year 2015 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	549,857	545,271		551,145	526,269	474,212	474,140
Total IBNR	43,175
Impact of LPT/ADC	56,114
Cumulative paid loss and LAE, net of reinsurance	448,867	417,736		388,640	338,642	246,616	86,695
Workers' Compensation | Accident Year 2016 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	579,849	603,529		627,728	568,006	528,906
Total IBNR	69,537
Impact of LPT/ADC	68,467
Cumulative paid loss and LAE, net of reinsurance	449,347	428,651		380,602	284,501	110,051
Workers' Compensation | Accident Year 2017 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	593,920	613,577		654,362	615,957
Total IBNR	50,255
Impact of LPT/ADC	84,180
Cumulative paid loss and LAE, net of reinsurance	485,611	448,551		274,596	111,508
Workers' Compensation | Accident Year 2018 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	575,765	580,528		592,566
Total IBNR	43,320
Impact of LPT/ADC	98,477
Cumulative paid loss and LAE, net of reinsurance	465,762	409,986		110,954
Workers' Compensation | Accident Year 2019 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	9,945	12,751
Total IBNR	1,311
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	5,821	3,907
General Liability | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	1,074,419
Total IBNR	182,286
Impact of LPT/ADC	80,487
Cumulative paid loss and LAE, net of reinsurance	721,826
All outstanding liabilities prior to 2008, net of reinsurance	135
Reserve for loss and LAE	352,728
Total net reserves	272,241
General Liability | Accident Year 2008 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	40,398	36,996		37,605	36,627	35,985	34,169	33,792	33,051	31,921	28,786
Total IBNR	3,521
Impact of LPT/ADC	202
Cumulative paid loss and LAE, net of reinsurance	37,253	34,893		36,699	34,935	32,765	32,423	32,849	29,384	26,288	20,935
General Liability | Accident Year 2009 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	36,228	35,410		35,138	34,863	34,040	32,418	30,902	29,123	28,384	19,311
Total IBNR	1,199
Impact of LPT/ADC	290
Cumulative paid loss and LAE, net of reinsurance	34,984	32,487		33,473	32,878	30,924	28,312	24,298	19,727	13,904	7,840
General Liability | Accident Year 2010 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	45,490	43,062		42,884	41,597	38,298	38,536	36,455	34,761	28,850	15,783
Total IBNR	1,296
Impact of LPT/ADC	866
Cumulative paid loss and LAE, net of reinsurance	42,509	39,888		39,214	37,317	34,125	30,948	26,429	19,010	11,187	5,140
General Liability | Accident Year 2011 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	55,607	53,499		52,746	49,338	45,303	42,100	40,557	35,628	24,731	11,334
Total IBNR	2,268
Impact of LPT/ADC	1,307
Cumulative paid loss and LAE, net of reinsurance	51,492	49,178		47,141	41,257	39,350	31,619	22,963	12,158	6,072	2,813
General Liability | Accident Year 2012 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	63,704	63,429		59,948	55,991	50,800	48,851	42,450	33,445	21,281
Total IBNR	5,147
Impact of LPT/ADC	1,963
Cumulative paid loss and LAE, net of reinsurance	55,350	56,538		53,526	45,775	40,864	29,752	18,020	13,224	5,084
General Liability | Accident Year 2013 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	95,050	92,032		89,204	79,731	68,641	66,869	43,116	42,021
Total IBNR	4,452
Impact of LPT/ADC	3,207
Cumulative paid loss and LAE, net of reinsurance	83,571	76,996		70,074	58,377	44,698	32,249	10,226	4,996
General Liability | Accident Year 2014 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	119,367	116,085		111,970	99,873	77,930	66,558	65,469
Total IBNR	11,697
Impact of LPT/ADC	5,837
Cumulative paid loss and LAE, net of reinsurance	92,861	86,101		77,259	57,678	36,026	24,581	3,503
General Liability | Accident Year 2015 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	154,529	154,071		139,518	122,942	95,766	118,111
Total IBNR	19,486
Impact of LPT/ADC	10,026
Cumulative paid loss and LAE, net of reinsurance	112,542	98,278		79,291	52,350	33,963	20,849
General Liability | Accident Year 2016 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	147,858	148,371		120,911	114,864	98,149
Total IBNR	28,163
Impact of LPT/ADC	13,924
Cumulative paid loss and LAE, net of reinsurance	88,627	67,064		45,855	21,959	6,402
General Liability | Accident Year 2017 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	161,354	165,268		133,533	116,158
Total IBNR	39,884
Impact of LPT/ADC	18,703
Cumulative paid loss and LAE, net of reinsurance	79,531	51,545		27,001	6,967
General Liability | Accident Year 2018 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	148,817	153,822		121,991
Total IBNR	60,290
Impact of LPT/ADC	24,162
Cumulative paid loss and LAE, net of reinsurance	42,792	24,618		7,907
General Liability | Accident Year 2019 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	6,017	5,427
Total IBNR	4,883
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	314	27
Commercial Auto Liability | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	1,186,511
Total IBNR	160,729
Impact of LPT/ADC	16,271
Cumulative paid loss and LAE, net of reinsurance	875,909
All outstanding liabilities prior to 2008, net of reinsurance	65
Reserve for loss and LAE	310,667
Total net reserves	294,396
Commercial Auto Liability | Accident Year 2008 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	37,746	35,542		35,382	35,521	35,975	34,584	34,522	33,700	32,769	29,890
Total IBNR	2,083
Impact of LPT/ADC	81
Cumulative paid loss and LAE, net of reinsurance	34,982	36,968		35,284	34,803	34,074	33,536	32,643	30,975	29,386	25,207
Commercial Auto Liability | Accident Year 2009 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	31,082	31,064		31,033	30,919	30,468	31,024	30,812	28,551	26,275	22,183
Total IBNR	502
Impact of LPT/ADC	72
Cumulative paid loss and LAE, net of reinsurance	30,337	31,194		30,204	29,842	29,829	29,226	26,975	22,959	18,736	14,532
Commercial Auto Liability | Accident Year 2010 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	40,637	42,070		41,996	42,146	40,523	40,193	38,043	37,154	33,457	26,239
Total IBNR	218
Impact of LPT/ADC	28
Cumulative paid loss and LAE, net of reinsurance	40,407	40,395		40,282	39,750	39,413	37,734	34,855	28,602	21,050	14,203
Commercial Auto Liability | Accident Year 2011 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	34,707	34,643		36,065	36,149	34,790	33,839	32,578	29,577	24,292	16,193
Total IBNR	489
Impact of LPT/ADC	37
Cumulative paid loss and LAE, net of reinsurance	33,872	33,451		33,155	33,130	32,362	29,769	25,808	18,813	12,333	5,721
Commercial Auto Liability | Accident Year 2012 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	45,902	45,917		45,753	46,150	48,116	44,812	40,076	32,691	20,863
Total IBNR	83
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	45,819	45,751		45,555	44,165	43,745	35,460	26,508	14,979	6,693
Commercial Auto Liability | Accident Year 2013 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	63,532	63,620		62,163	63,162	59,702	50,647	44,771	33,473
Total IBNR	383
Impact of LPT/ADC	26
Cumulative paid loss and LAE, net of reinsurance	62,562	62,331		59,600	57,349	48,122	34,379	19,865	8,267
Commercial Auto Liability | Accident Year 2014 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	94,238	92,572		89,299	82,427	73,966	55,023	47,525
Total IBNR	1,885
Impact of LPT/ADC	123
Cumulative paid loss and LAE, net of reinsurance	90,761	87,458		79,766	64,459	42,960	22,858	8,450
Commercial Auto Liability | Accident Year 2015 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	129,849	127,560		119,141	106,560	92,955	66,967
Total IBNR	3,298
Impact of LPT/ADC	353
Cumulative paid loss and LAE, net of reinsurance	118,753	107,707		86,433	62,945	39,179	13,102
Commercial Auto Liability | Accident Year 2016 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	170,275	171,504		144,077	118,210	121,828
Total IBNR	10,345
Impact of LPT/ADC	1,468
Cumulative paid loss and LAE, net of reinsurance	133,826	113,174		76,635	48,595	19,071
Commercial Auto Liability | Accident Year 2017 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	230,972	220,457		189,257	156,575
Total IBNR	36,791
Impact of LPT/ADC	3,930
Cumulative paid loss and LAE, net of reinsurance	154,600	115,623		69,657	26,863
Commercial Auto Liability | Accident Year 2018 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	230,200	224,780		177,150
Total IBNR	67,728
Impact of LPT/ADC	10,153
Cumulative paid loss and LAE, net of reinsurance	107,184	67,080		30,018
Commercial Auto Liability | Accident Year 2019 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	77,371	79,172
Total IBNR	36,931
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	22,799	9,456
Commercial Auto Liability | Accident Year 2020 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	0
Total IBNR	(7)
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	7
European Hospital Liability | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	662,058
Total IBNR	44,365
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	414,816
Reserve for loss and LAE	247,242
Total net reserves	247,242
European Hospital Liability | Accident Year 2011 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	68,076	67,770		65,312	68,115	70,247	51,016	53,632	38,818	25,077	53,686
Total IBNR	(2,016)
Cumulative paid loss and LAE, net of reinsurance	58,251	53,327		49,239	44,708	38,642	31,100	25,424	13,855	4,696	1,185
European Hospital Liability | Accident Year 2012 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	128,394	127,380		122,115	94,490	99,792	111,555	87,000	87,851	86,197
Total IBNR	5,327
Cumulative paid loss and LAE, net of reinsurance	100,802	89,942		83,322	74,646	63,306	49,240	37,805	16,611	5,195
European Hospital Liability | Accident Year 2013 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	114,707	113,194		106,864	83,373	91,182	69,407	66,535	52,960
Total IBNR	6,568
Cumulative paid loss and LAE, net of reinsurance	82,179	67,891		60,054	53,587	42,628	27,939	16,238	3,228
European Hospital Liability | Accident Year 2014 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	94,020	92,886		87,192	69,148	62,145	58,019	55,098
Total IBNR	8,802
Cumulative paid loss and LAE, net of reinsurance	62,995	50,120		42,489	37,866	26,605	12,799	4,544
European Hospital Liability | Accident Year 2015 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	75,060	74,802		71,395	64,935	49,873	51,369
Total IBNR	7,381
Cumulative paid loss and LAE, net of reinsurance	49,524	37,756		31,439	24,634	11,932	3,752
European Hospital Liability | Accident Year 2016 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	73,562	75,207		72,467	55,367	48,094
Total IBNR	8,135
Cumulative paid loss and LAE, net of reinsurance	37,625	25,349		19,057	11,502	3,872
European Hospital Liability | Accident Year 2017 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	57,146	58,715		56,413	44,277
Total IBNR	7,174
Cumulative paid loss and LAE, net of reinsurance	15,873	8,178		4,772	1,382
European Hospital Liability | Accident Year 2018 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	35,196	34,186		48,199
Total IBNR	867
Cumulative paid loss and LAE, net of reinsurance	5,836	2,449		995
European Hospital Liability | Accident Year 2019 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	15,897	17,174
Total IBNR	2,127
Cumulative paid loss and LAE, net of reinsurance	1,731	12,388
All other lines | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	490,218
Total IBNR	4,020
Impact of LPT/ADC	1,529
Cumulative paid loss and LAE, net of reinsurance	474,037
All outstanding liabilities prior to 2008, net of reinsurance	(1)
Reserve for loss and LAE	16,180
Total net reserves	14,651
All other lines | Accident Year 2008 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	24,045	29,519		29,574	29,576	29,070	29,237	29,149	28,715	28,724	27,630
Total IBNR	(779)
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	24,706	29,234		30,683	30,833	29,177	29,388	31,217	29,900	29,710	25,776
All other lines | Accident Year 2009 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	15,750	14,617		15,653	16,088	14,492	14,309	13,329	11,959	20,349	12,516
Total IBNR	379
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	14,954	14,009		15,051	15,224	13,870	13,105	11,093	8,743	8,084	7,891
All other lines | Accident Year 2010 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	15,905	15,438		17,059	17,071	16,105	16,078	15,484	24,718	15,182	14,440
Total IBNR	52
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	15,853	15,285		16,786	16,919	16,058	15,748	15,375	13,012	12,332	12,373
All other lines | Accident Year 2011 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	21,515	21,469		23,506	23,376	22,616	22,359	27,509	26,343	19,948	18,822
Total IBNR	155
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	21,343	21,481		23,661	23,892	22,715	22,044	21,279	17,571	16,424	$ 13,840
All other lines | Accident Year 2012 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	17,969	19,578		20,260	19,850	18,673	21,898	19,426	18,443	14,697
Total IBNR	(140)
Impact of LPT/ADC	152
Cumulative paid loss and LAE, net of reinsurance	18,071	17,559		18,685	18,205	17,946	16,936	16,033	14,031	$ 10,308
All other lines | Accident Year 2013 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	20,644	21,735		21,669	21,313	22,918	28,058	17,630	17,806
Total IBNR	498
Impact of LPT/ADC	246
Cumulative paid loss and LAE, net of reinsurance	20,146	19,343		20,447	20,456	20,258	17,509	15,997	$ 11,877
All other lines | Accident Year 2014 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	21,496	24,929		26,278	24,958	26,021	25,268	20,597
Total IBNR	(2)
Impact of LPT/ADC	123
Cumulative paid loss and LAE, net of reinsurance	21,497	21,405		26,194	22,018	20,940	20,277	$ 12,028
All other lines | Accident Year 2015 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	44,939	47,882		49,463	49,631	54,857	52,706
Total IBNR	793
Impact of LPT/ADC	50
Cumulative paid loss and LAE, net of reinsurance	43,622	44,179		41,962	42,631	45,208	$ 28,929
All other lines | Accident Year 2016 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	67,060	73,602		72,384	74,948	79,654
Total IBNR	3,039
Impact of LPT/ADC	113
Cumulative paid loss and LAE, net of reinsurance	63,450	63,234		65,452	69,805	$ 42,795
All other lines | Accident Year 2017 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	96,196	92,904		96,812	104,637
Total IBNR	1,252
Impact of LPT/ADC	218
Cumulative paid loss and LAE, net of reinsurance	93,212	80,735		80,726	$ 48,903
All other lines | Accident Year 2018 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	101,553	103,489		96,910
Total IBNR	(1,795)
Impact of LPT/ADC	627
Cumulative paid loss and LAE, net of reinsurance	98,386	86,455		$ 56,539
All other lines | Accident Year 2019 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	43,146	37,945
Total IBNR	597
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	38,793	$ 22,095
All other lines | Accident Year 2020 | AmTrust Reinsurance
Claims Development [Line Items]
Incurred loss and LAE, net of reinsurance	0
Total IBNR	(29)
Impact of LPT/ADC	0
Cumulative paid loss and LAE, net of reinsurance	$ 4