Reinsurance - Written Premium

12 Months Ended

Dec. 31, 2018

Supplemental Schedule Of Reinsurance Premiums For Insurance Companies [Abstract]

Reinsurance - Written Premium

SCHEDULE IV

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

Reinsurance - Written Premium

			Ceded to		Assumed				Percentage
	Direct		Other		from Other		Net		of Amount
amounts in thousands	Amount		Companies		Companies		Amount		Assumedto Net
Year ended December 31, 2018
Accident & Health	$	—	$	—	$	139,692	$	139,692		100.0	%
Property & Liability		1,613,825		441,876		159,444		1,331,393		12.0	%
Total	$	1,613,825	$	441,876	$	299,136	$	1,471,085		20.3	%
Year ended December 31, 2017
Accident & Health	$	—	$	—	$	80,605	$	80,605		100.0	%
Property & Liability		1,489,422		441,935		143,238		1,190,725		12.0	%
Total	$	1,489,422	$	441,935	$	223,843	$	1,271,330		17.6	%
Year ended December 31, 2016
Accident & Health	$	—	$	—	$	53,814	$	53,814		100.0	%
Property & Liability		1,403,865		382,687		111,232		1,132,410		9.8	%
Total	$	1,403,865	$	382,687	$	165,046	$	1,186,224		13.9	%