HISTORICAL LOSS AND LAE DEVELOPMENT - Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance (Details) $ in Thousands	Dec. 31, 2016 USD ($) claim	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)	Dec. 31, 2008 USD ($)	Dec. 31, 2007 USD ($)
Claims Development [Line Items]
Liabilities for losses and loss adjustment expenses, net of reinsurance	$ 851,113	$ 805,941
Casualty segment | Primary Occurrence
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	758,713
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	472,960
All outstanding liabilities before 2007, net of reinsurance	7,503
Liabilities for losses and loss adjustment expenses, net of reinsurance	293,256	292,906
Casualty segment | Primary Occurrence | 2007
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	63,618	64,217	$ 64,201	$ 64,159	$ 64,479	$ 66,918	$ 74,731	$ 86,053	$ 101,363	$ 101,405
Total IBNR	$ 1,492
Cumulative number of reported claims | claim	5,007
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 59,060	59,093	56,167	51,619	45,616	38,732	30,716	18,944	9,811	1,928
Casualty segment | Primary Occurrence | 2008
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	74,837	73,696	73,859	74,174	78,218	83,367	91,734	100,454	96,829
Total IBNR	$ 1,764
Cumulative number of reported claims | claim	5,405
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 67,572	64,814	62,511	56,288	48,108	33,605	20,539	9,399	3,022
Casualty segment | Primary Occurrence | 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	80,518	81,138	82,651	86,888	91,441	99,765	119,957	85,476
Total IBNR	$ 2,704
Cumulative number of reported claims | claim	5,683
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 74,920	70,220	65,913	58,460	43,702	24,115	9,233	1,972
Casualty segment | Primary Occurrence | 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	78,685	80,289	85,034	88,820	93,589	96,582	87,875
Total IBNR	$ 3,183
Cumulative number of reported claims | claim	6,100
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 66,399	61,929	55,992	44,051	29,312	13,025	2,587
Casualty segment | Primary Occurrence | 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	83,181	86,342	89,622	94,145	98,428	91,139
Total IBNR	$ 5,150
Cumulative number of reported claims | claim	5,827
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 67,358	60,769	48,822	32,978	17,124	5,924
Casualty segment | Primary Occurrence | 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	59,028	61,072	65,893	78,406	91,807
Total IBNR	$ 5,645
Cumulative number of reported claims | claim	5,123
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 43,276	33,822	23,889	14,539	5,897
Casualty segment | Primary Occurrence | 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	60,329	62,882	67,297	80,823
Total IBNR	$ 14,202
Cumulative number of reported claims | claim	4,207
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 34,786	22,366	13,021	6,334
Casualty segment | Primary Occurrence | 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	71,592	79,497	88,092
Total IBNR	$ 26,967
Cumulative number of reported claims | claim	4,075
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 29,545	18,771	11,436
Casualty segment | Primary Occurrence | 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	84,975	94,835
Total IBNR	$ 47,441
Cumulative number of reported claims | claim	3,997
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 19,902	10,157
Casualty segment | Primary Occurrence | 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	101,950
Total IBNR	$ 80,004
Cumulative number of reported claims | claim	3,350
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 10,142
Casualty segment | Excess Occurrence
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	275,519
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	133,098
All outstanding liabilities before 2007, net of reinsurance	21,380
Liabilities for losses and loss adjustment expenses, net of reinsurance	163,801	151,535
Casualty segment | Excess Occurrence | 2007
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	19,100	19,412	19,592	20,289	20,284	21,514	23,759	26,428	28,820	36,632
Total IBNR	$ 253
Cumulative number of reported claims | claim	634
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 18,845	18,841	18,524	18,473	17,366	17,010	12,610	10,176	9,289	2,463
Casualty segment | Excess Occurrence | 2008
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	13,487	13,695	13,816	13,862	13,869	14,472	17,347	22,666	35,209
Total IBNR	$ 210
Cumulative number of reported claims | claim	633
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 13,183	13,166	12,163	11,938	11,755	11,231	8,212	3,224	115
Casualty segment | Excess Occurrence | 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	11,982	12,601	12,459	12,966	12,893	14,981	19,719	30,267
Total IBNR	$ 178
Cumulative number of reported claims | claim	566
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 11,780	11,776	10,808	11,001	9,460	6,585	3,947	956
Casualty segment | Excess Occurrence | 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	21,018	22,044	20,044	18,932	22,111	24,244	29,314
Total IBNR	$ 598
Cumulative number of reported claims | claim	497
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 19,175	17,302	15,512	13,282	10,705	6,002	7
Casualty segment | Excess Occurrence | 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	20,959	19,160	18,641	17,443	17,148	26,272
Total IBNR	$ 1,342
Cumulative number of reported claims | claim	574
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 16,494	10,772	8,793	6,981	5,145	2,169
Casualty segment | Excess Occurrence | 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	21,231	21,885	21,021	21,558	29,042
Total IBNR	$ 2,465
Cumulative number of reported claims | claim	818
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 16,879	15,380	8,843	3,573	1,315
Casualty segment | Excess Occurrence | 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	25,425	26,857	34,824	39,984
Total IBNR	$ 6,158
Cumulative number of reported claims | claim	909
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 14,545	10,967	5,701	1,060
Casualty segment | Excess Occurrence | 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	35,119	39,095	50,889
Total IBNR	$ 17,141
Cumulative number of reported claims | claim	785
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 11,002	4,006	1,899
Casualty segment | Excess Occurrence | 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	50,857	53,672
Total IBNR	$ 35,131
Cumulative number of reported claims | claim	529
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 10,127	2,048
Casualty segment | Excess Occurrence | 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	56,341
Total IBNR	$ 52,614
Cumulative number of reported claims | claim	292
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 1,068
Casualty segment | Claims Made
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	263,015
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	111,877
All outstanding liabilities before 2007, net of reinsurance	893
Liabilities for losses and loss adjustment expenses, net of reinsurance	152,031	145,778
Casualty segment | Claims Made | 2007
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	5,198	5,265	5,691	7,731	8,115	9,415	10,271	10,836	12,173	8,662
Total IBNR	$ 117
Cumulative number of reported claims | claim	289
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 5,080	5,081	5,081	5,025	3,759	3,661	1,950	986	283	64
Casualty segment | Claims Made | 2008
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	4,584	4,848	5,568	6,878	7,811	3,043	3,915	12,754	11,083
Total IBNR	$ 156
Cumulative number of reported claims | claim	300
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 4,424	4,385	4,380	712	707	705	703	227	9
Casualty segment | Claims Made | 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	12,053	12,810	13,117	11,710	13,562	9,687	13,703	12,918
Total IBNR	$ 589
Cumulative number of reported claims | claim	383
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 11,398	11,217	10,678	5,176	3,413	773	442	113
Casualty segment | Claims Made | 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	9,175	10,581	11,689	10,429	9,776	15,556	13,690
Total IBNR	$ 663
Cumulative number of reported claims | claim	502
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 6,956	5,749	5,733	3,626	2,308	1,548	259
Casualty segment | Claims Made | 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	7,720	8,510	10,619	12,260	17,454	17,416
Total IBNR	$ 887
Cumulative number of reported claims | claim	681
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 6,209	5,637	5,947	4,508	1,949	330
Casualty segment | Claims Made | 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	18,022	19,590	20,727	26,144	27,576
Total IBNR	$ 2,737
Cumulative number of reported claims | claim	803
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 10,968	9,218	6,898	4,086	433
Casualty segment | Claims Made | 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	40,288	44,054	41,488	40,095
Total IBNR	$ 9,509
Cumulative number of reported claims | claim	1,042
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 26,121	18,425	7,073	792
Casualty segment | Claims Made | 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	58,152	55,386	53,929
Total IBNR	$ 22,424
Cumulative number of reported claims | claim	1,300
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 27,923	9,775	1,705
Casualty segment | Claims Made | 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	47,831	55,006
Total IBNR	$ 31,065
Cumulative number of reported claims | claim	1,327
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 10,738	2,215
Casualty segment | Claims Made | 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	59,992
Total IBNR	$ 46,064
Cumulative number of reported claims | claim	1,377
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 2,060
Casualty segment | Transportation
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	315,155
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	216,579
All outstanding liabilities before 2007, net of reinsurance	28
Liabilities for losses and loss adjustment expenses, net of reinsurance	98,604	74,750
Casualty segment | Transportation | 2007
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	25,917	25,918	26,093	26,111	26,035	25,788	25,773	28,398	30,574	32,125
Total IBNR	$ 28
Cumulative number of reported claims | claim	3,614
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 25,829	25,827	25,815	25,669	25,489	24,068	21,359	17,077	10,690	6,322
Casualty segment | Transportation | 2008
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	23,690	23,673	23,764	24,110	24,255	23,497	25,520	27,752	32,071
Total IBNR	$ 39
Cumulative number of reported claims | claim	2,834
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 23,616	23,614	23,387	23,293	21,110	18,359	14,489	10,821	6,153
Casualty segment | Transportation | 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	21,969	21,958	22,340	22,613	22,929	23,174	23,366	26,349
Total IBNR	$ 43
Cumulative number of reported claims | claim	2,644
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 21,650	21,640	21,325	21,100	19,933	14,613	8,698	5,035
Casualty segment | Transportation | 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	23,701	23,625	23,981	25,593	24,912	23,390	27,239
Total IBNR	$ 60
Cumulative number of reported claims | claim	2,842
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 23,488	23,063	21,792	20,045	15,475	10,116	6,296
Casualty segment | Transportation | 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	25,376	25,431	25,272	25,747	23,479	22,957
Total IBNR	$ 116
Cumulative number of reported claims | claim	2,467
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 23,537	22,375	19,443	14,477	9,485	5,295
Casualty segment | Transportation | 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	23,689	23,511	22,924	22,203	21,452
Total IBNR	$ 179
Cumulative number of reported claims | claim	2,280
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 20,931	17,318	12,394	8,533	4,466
Casualty segment | Transportation | 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	37,673	32,989	32,853	32,742
Total IBNR	$ 1,503
Cumulative number of reported claims | claim	2,847
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 28,220	19,761	11,978	5,306
Casualty segment | Transportation | 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	36,452	33,015	38,361
Total IBNR	$ 4,276
Cumulative number of reported claims | claim	3,082
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 19,676	13,933	7,125
Casualty segment | Transportation | 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	46,258	38,561
Total IBNR	$ 10,612
Cumulative number of reported claims | claim	3,135
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 20,709	6,984
Casualty segment | Transportation | 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	50,430
Total IBNR	$ 14,029
Cumulative number of reported claims | claim	3,506
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 8,923
Property segment
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	607,077
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	559,424
All outstanding liabilities before 2007, net of reinsurance	116
Liabilities for losses and loss adjustment expenses, net of reinsurance	47,769	46,542
Property segment | 2007
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	57,895	58,029	58,186	58,432	58,986	59,510	60,439	60,522	58,044	58,505
Total IBNR	$ 22
Cumulative number of reported claims | claim	1,963
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 57,870	57,904	57,909	57,937	57,629	56,435	54,280	50,789	44,890	26,412
Property segment | 2008
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	75,288	75,313	75,281	76,089	75,974	78,946	78,378	79,774	75,951
Total IBNR	$ 91
Cumulative number of reported claims | claim	2,718
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 74,827	74,766	74,692	73,619	71,938	69,811	66,028	59,695	31,573
Property segment | 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	49,267	48,707	48,857	48,969	49,534	52,286	55,821	59,975
Total IBNR	$ 80
Cumulative number of reported claims | claim	2,631
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 49,051	48,329	48,297	48,031	46,004	43,758	40,775	25,464
Property segment | 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	52,964	52,927	54,153	53,937	55,427	59,145	63,194
Total IBNR	$ 92
Cumulative number of reported claims | claim	2,849
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 52,719	52,426	52,729	50,055	47,743	43,091	25,274
Property segment | 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	62,570	62,770	63,724	64,976	66,924	70,246
Total IBNR	$ 495
Cumulative number of reported claims | claim	3,025
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 61,428	60,272	59,099	55,778	48,756	27,676
Property segment | 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	79,175	77,569	79,181	80,155	85,485
Total IBNR	$ 1,066
Cumulative number of reported claims | claim	2,637
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 75,640	73,705	72,057	66,509	39,074
Property segment | 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	62,114	62,173	62,090	63,864
Total IBNR	$ 927
Cumulative number of reported claims | claim	2,992
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 59,259	57,407	50,840	32,208
Property segment | 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	48,801	49,441	56,587
Total IBNR	$ 939
Cumulative number of reported claims | claim	4,556
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 46,148	43,380	30,550
Property segment | 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	56,103	59,863
Total IBNR	$ 4,067
Cumulative number of reported claims | claim	4,059
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 49,348	32,184
Property segment | 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	62,900
Total IBNR	$ 19,132
Cumulative number of reported claims | claim	3,030
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 33,134
Surety segment
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	85,887
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	61,441
All outstanding liabilities before 2007, net of reinsurance	(58)
Liabilities for losses and loss adjustment expenses, net of reinsurance	24,388	20,299
Surety segment | 2007
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	3,309	3,201	3,083	3,090	2,971	2,827	3,059	3,061	2,712	9,780
Total IBNR	$ 3
Cumulative number of reported claims | claim	1,823
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 3,287	3,176	2,474	2,451	2,308	2,183	2,101	1,452	990	$ 562
Surety segment | 2008
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	2,939	2,856	2,877	2,850	2,832	3,267	3,469	4,045	8,055
Total IBNR	$ 10
Cumulative number of reported claims | claim	2,079
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 2,919	2,803	2,816	2,745	2,731	2,665	2,722	2,110	$ 643
Surety segment | 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	4,923	4,288	4,551	4,146	4,246	4,708	4,896	15,474
Total IBNR	$ 17
Cumulative number of reported claims | claim	1,657
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 3,908	3,919	4,336	3,490	2,493	2,382	1,914	$ 892
Surety segment | 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	7,645	7,136	6,810	7,076	6,630	8,205	13,961
Total IBNR	$ 279
Cumulative number of reported claims | claim	1,524
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 7,822	7,285	7,151	7,092	5,702	3,205	$ 1,724
Surety segment | 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	16,695	16,766	17,321	17,792	17,832	13,842
Total IBNR	$ 259
Cumulative number of reported claims | claim	1,663
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 17,086	17,212	17,403	17,151	16,932	$ 8,160
Surety segment | 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	7,867	8,180	8,667	11,452	17,114
Total IBNR	$ 176
Cumulative number of reported claims | claim	1,447
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 7,536	7,416	6,726	6,680	$ 1,883
Surety segment | 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	5,399	6,170	7,516	16,080
Total IBNR	$ 401
Cumulative number of reported claims | claim	1,373
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 4,911	4,701	2,856	$ 1,116
Surety segment | 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	5,225	8,106	16,450
Total IBNR	$ 996
Cumulative number of reported claims | claim	1,283
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 4,166	4,283	$ 722
Surety segment | 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	12,957	16,958
Total IBNR	$ 3,571
Cumulative number of reported claims | claim	1,053
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 6,719	$ 3,192
Surety segment | 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	18,928
Total IBNR	$ 13,892
Cumulative number of reported claims | claim	713
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 3,087