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RESERVE FOR LOSSES AND LOSS EXPENSES - Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 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
Claims Development [Line Items]
Liabilities for claims and claim adjustment expenses, net of reinsurance	$ 9,392,938
Insurance
Claims Development [Line Items]
Liabilities for claims and claim adjustment expenses, net of reinsurance	3,937,283
Insurance | Property and other
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	3,796,262
All outstanding liabilities before 2011, net of reinsurance	7,141
Liabilities for claims and claim adjustment expenses, net of reinsurance	794,903
Insurance | Property and other | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	270,507	$ 270,516	$ 270,546	$ 270,104	$ 269,423	$ 269,626	$ 270,636	$ 248,346	$ 191,823	$ 83,511
Insurance | Property and other | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	317,803	317,574	315,466	315,391	310,171	302,638	279,588	214,771	77,794
Insurance | Property and other | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	269,598	265,749	263,930	260,895	249,852	238,808	199,930	76,179
Insurance | Property and other | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	317,306	320,597	319,414	315,212	308,010	261,155	133,451
Insurance | Property and other | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	251,758	244,916	244,205	229,901	204,862	100,483
Insurance | Property and other | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	345,188	343,839	335,173	294,777	126,232
Insurance | Property and other | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	781,152	751,394	634,649	256,136
Insurance | Property and other | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	693,287	592,507	292,977
Insurance | Property and other | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	330,268	197,703
Insurance | Property and other | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	219,395
Insurance | Marine
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	776,865
All outstanding liabilities before 2011, net of reinsurance	6,786
Liabilities for claims and claim adjustment expenses, net of reinsurance	362,631
Insurance | Marine | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	68,022	68,051	67,560	65,512	61,063	60,340	58,465	55,329	44,483	26,467
Insurance | Marine | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	56,689	56,524	55,387	53,309	50,865	50,028	45,197	38,820	10,752
Insurance | Marine | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	79,683	78,396	78,245	67,196	64,497	56,126	44,931	19,577
Insurance | Marine | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	42,945	41,788	36,681	27,462	27,529	15,418	6,365
Insurance | Marine | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	115,391	113,818	112,390	109,431	55,425	21,467
Insurance | Marine | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	64,645	63,829	57,552	31,890	12,498
Insurance | Marine | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	117,253	92,848	68,709	14,634
Insurance | Marine | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	117,629	87,150	27,218
Insurance | Marine | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	76,175	36,354
Insurance | Marine | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	38,433
Insurance | Aviation
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	243,651
All outstanding liabilities before 2011, net of reinsurance	6,511
Liabilities for claims and claim adjustment expenses, net of reinsurance	84,024
Insurance | Aviation | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	6,252	6,244	6,199	6,057	5,836	5,584	5,047	4,527	2,834	639
Insurance | Aviation | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	7,134	7,136	7,201	7,087	6,863	5,966	4,166	2,872	958
Insurance | Aviation | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	15,976	14,516	14,195	13,585	11,474	9,767	7,339	4,402
Insurance | Aviation | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	15,044	14,874	14,509	13,871	11,711	8,035	3,990
Insurance | Aviation | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	26,026	24,716	23,253	20,990	16,182	8,092
Insurance | Aviation | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	29,117	27,879	26,311	19,310	10,424
Insurance | Aviation | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	59,895	51,512	40,811	21,458
Insurance | Aviation | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	48,088	40,713	21,544
Insurance | Aviation | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	29,808	18,465
Insurance | Aviation | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	6,311
Insurance | Credit and political risk
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	243,467
All outstanding liabilities before 2011, net of reinsurance	(3,957)
Liabilities for claims and claim adjustment expenses, net of reinsurance	106,644
Insurance | Credit and political risk | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	27,636	27,636	27,636	27,636	27,636	27,636	27,636	27,636	37,205	32,788
Insurance | Credit and political risk | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	44	44	44	42	40	0	0	0	0
Insurance | Credit and political risk | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	13,828	13,828	13,828	11,769	5,216	3,726	2,235	745
Insurance | Credit and political risk | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	70,224	64,051	57,858	57,858	61,108	39,952	1,924
Insurance | Credit and political risk | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	23,309	23,309	23,309	23,309	23,309	0
Insurance | Credit and political risk | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	23,551	23,551	23,551	23,551	0
Insurance | Credit and political risk | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	12,103	9,615	4,305	396
Insurance | Credit and political risk | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	16,152	14,095	5,751
Insurance | Credit and political risk | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	46,797	16,260
Insurance | Credit and political risk | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	9,823
Insurance | Professional lines
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	2,119,056
All outstanding liabilities before 2011, net of reinsurance	94,767
Liabilities for claims and claim adjustment expenses, net of reinsurance	1,786,152
Insurance | Professional lines | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	318,439	303,147	295,434	284,246	239,092	166,417	109,183	74,932	33,058	7,464
Insurance | Professional lines | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	299,719	282,970	274,615	255,108	231,960	185,091	100,608	41,586	7,830
Insurance | Professional lines | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	278,086	265,346	244,566	214,481	176,846	130,341	73,347	17,732
Insurance | Professional lines | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	254,655	244,832	225,591	193,659	131,018	71,224	23,616
Insurance | Professional lines | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	243,519	204,480	170,331	138,369	67,994	20,376
Insurance | Professional lines | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	235,346	193,151	147,958	71,316	15,924
Insurance | Professional lines | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	207,157	140,047	72,501	21,039
Insurance | Professional lines | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	156,052	83,623	21,346
Insurance | Professional lines | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	99,594	28,265
Insurance | Professional lines | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	26,489
Insurance | Liability
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	741,261
All outstanding liabilities before 2011, net of reinsurance	53,506
Liabilities for claims and claim adjustment expenses, net of reinsurance	802,929
Insurance | Liability | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	72,023	67,114	62,151	60,261	54,996	46,074	38,377	20,190	10,540	2,761
Insurance | Liability | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	48,317	48,035	46,541	42,741	37,140	30,146	15,412	5,515	1,631
Insurance | Liability | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	73,320	71,989	66,970	60,011	42,056	33,326	23,287	2,364
Insurance | Liability | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	103,063	93,589	84,389	71,609	49,861	18,665	1,419
Insurance | Liability | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	141,062	120,357	92,753	39,718	22,441	5,440
Insurance | Liability | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	66,437	56,497	36,404	23,326	6,333
Insurance | Liability | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	116,232	59,432	29,687	5,481
Insurance | Liability | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	72,604	35,056	9,554
Insurance | Liability | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	40,047	7,900
Insurance | Liability | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	8,156
Reinsurance
Claims Development [Line Items]
Liabilities for claims and claim adjustment expenses, net of reinsurance	5,455,655
Reinsurance | Property and other
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	5,983,069
All outstanding liabilities before 2011, net of reinsurance	14,996
Liabilities for claims and claim adjustment expenses, net of reinsurance	1,640,017
Reinsurance | Property and other | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	1,052,937	1,048,430	1,042,203	1,039,375	1,024,187	950,247	919,965	817,211	605,668	261,198
Reinsurance | Property and other | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	437,895	431,573	418,995	416,897	407,161	392,448	369,726	296,496	123,594
Reinsurance | Property and other | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	494,554	489,337	488,626	487,161	477,155	446,221	328,273	107,883
Reinsurance | Property and other | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	469,836	467,589	462,510	456,267	438,269	355,383	102,394
Reinsurance | Property and other | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	429,278	418,506	405,736	372,981	268,037	71,438
Reinsurance | Property and other | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	592,463	570,973	527,359	381,965	128,439
Reinsurance | Property and other | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	929,367	860,241	720,708	251,905
Reinsurance | Property and other | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	798,684	654,299	196,512
Reinsurance | Property and other | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	593,715	161,854
Reinsurance | Property and other | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	184,340
Reinsurance | Professional lines
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	954,088
All outstanding liabilities before 2011, net of reinsurance	65,680
Liabilities for claims and claim adjustment expenses, net of reinsurance	990,567
Reinsurance | Professional lines | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	138,436	136,934	130,411	120,088	103,322	85,065	57,404	30,342	11,836	1,510
Reinsurance | Professional lines | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	156,191	146,517	132,392	107,641	86,240	53,827	29,747	10,453	780
Reinsurance | Professional lines | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	129,296	123,927	105,398	81,967	65,218	30,676	12,132	1,069
Reinsurance | Professional lines | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	159,457	147,649	109,581	74,799	48,957	13,089	2,020
Reinsurance | Professional lines | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	132,417	112,228	79,330	41,600	13,507	3,134
Reinsurance | Professional lines | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	125,847	95,727	52,820	20,646	1,786
Reinsurance | Professional lines | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	63,183	40,082	15,082	2,815
Reinsurance | Professional lines | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	31,594	2,702	272
Reinsurance | Professional lines | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	13,843	377
Reinsurance | Professional lines | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	3,824
Reinsurance | Liability
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	1,085,264
All outstanding liabilities before 2011, net of reinsurance	95,411
Liabilities for claims and claim adjustment expenses, net of reinsurance	1,320,221
Reinsurance | Liability | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	150,790	142,173	136,200	123,781	112,649	92,760	70,339	40,027	21,305	5,202
Reinsurance | Liability | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	134,789	126,298	115,874	101,391	78,405	58,881	28,426	12,812	3,545
Reinsurance | Liability | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	123,774	113,217	102,678	88,334	69,100	52,364	22,262	5,977
Reinsurance | Liability | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	131,002	110,511	89,760	70,400	48,503	28,700	7,112
Reinsurance | Liability | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	131,327	109,349	81,010	54,640	27,476	7,274
Reinsurance | Liability | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	143,917	112,434	69,903	37,831	11,886
Reinsurance | Liability | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	121,535	78,830	42,218	12,448
Reinsurance | Liability | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	85,671	50,223	19,369
Reinsurance | Liability | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	45,511	19,334
Reinsurance | Liability | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	16,948
Reinsurance | Credit and surety
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	920,253
All outstanding liabilities before 2011, net of reinsurance	20,223
Liabilities for claims and claim adjustment expenses, net of reinsurance	243,609
Reinsurance | Credit and surety | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	95,734	95,042	94,208	92,557	90,181	87,860	83,199	75,122	56,811	22,714
Reinsurance | Credit and surety | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	118,948	118,514	116,559	115,187	113,340	109,765	103,866	88,745	50,749
Reinsurance | Credit and surety | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	118,730	116,501	111,532	109,528	101,765	94,952	79,432	32,786
Reinsurance | Credit and surety | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	111,316	110,768	106,341	98,712	89,356	63,361	35,910
Reinsurance | Credit and surety | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	127,130	123,365	121,482	103,810	84,626	33,105
Reinsurance | Credit and surety | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	106,658	105,444	95,624	75,646	42,410
Reinsurance | Credit and surety | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	106,016	94,020	76,621	37,531
Reinsurance | Credit and surety | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	76,834	71,157	39,333
Reinsurance | Credit and surety | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	33,521	19,535
Reinsurance | Credit and surety | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	25,366
Reinsurance | Motor
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	1,379,309
All outstanding liabilities before 2011, net of reinsurance	233,087
Liabilities for claims and claim adjustment expenses, net of reinsurance	1,261,241
Reinsurance | Motor | Accident Year 2011
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	100,394	98,020	95,946	94,893	89,952	83,615	76,441	65,351	49,721	$ 24,346
Reinsurance | Motor | Accident Year 2012
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	98,316	96,508	95,269	92,812	88,535	81,695	71,305	55,800	$ 29,851
Reinsurance | Motor | Accident Year 2013
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	100,213	97,715	94,498	88,589	82,510	71,790	56,692	$ 34,780
Reinsurance | Motor | Accident Year 2014
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	139,456	129,566	119,252	108,374	99,642	78,589	$ 44,432
Reinsurance | Motor | Accident Year 2015
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	169,838	155,110	138,317	120,135	98,431	$ 59,120
Reinsurance | Motor | Accident Year 2016
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	175,311	155,493	136,449	110,605	$ 62,171
Reinsurance | Motor | Accident Year 2017
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	209,888	174,770	141,599	$ 73,759
Reinsurance | Motor | Accident Year 2018
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	200,801	150,276	$ 85,701
Reinsurance | Motor | Accident Year 2019
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	159,461	$ 91,189
Reinsurance | Motor | Accident Year 2020
Claims Development [Line Items]
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 25,631

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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Period Type:	duration

X

- Definition

Amount, after reinsurance, of paid claims and allocated claim adjustment expense used in claims development for short-duration insurance contracts. Excludes unallocated claim adjustment expense.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 4B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671311-158438

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 944
-SubTopic 40
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-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671311-158438

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- Definition

Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts for accident years not separately presented in claim development information. Excludes unallocated claim adjustment expense.

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