Securities In An Unrealized Loss Position (Tables)

12 Months Ended

Dec. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Securities In An Unrealized Loss Position

The following tables summarize all securities in an unrealized loss position at December 31, 2016 and 2015 by the length of time those securities have been continuously in an unrealized loss position.

	Less Than 12 Months				12 Months or Greater				Total
(In thousands)	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
December 31, 2016
U.S. government and government agency	$	112,709	$	1,252	$	35,450	$	1,341	$	148,159	$	2,593
State and municipal	1,562,614		35,553		133,034		4,885		1,695,648		40,438
Mortgage-backed securities	625,903		11,103		109,066		4,828		734,969		15,931
Asset-backed securities	1,010,836		5,340		201,693		6,601		1,212,529		11,941
Corporate	1,035,245		13,448		65,147		7,470		1,100,392		20,918
Foreign government	213,246		1,985		24,820		777		238,066		2,762
Fixed maturity securities	4,560,553		68,681		569,210		25,902		5,129,763		94,583
Common stocks	336		22		8,755		1,024		9,091		1,046
Preferred stocks	—		—		22,034		3,639		22,034		3,639
Equity securities available for sale	336		22		30,789		4,663		31,125		4,685
Total	$	4,560,889	$	68,703	$	599,999	$	30,565	$	5,160,888	$	99,268
December 31, 2015
U.S. government and government agency	$	101,660	$	487	$	64,500	$	1,846	$	166,160	$	2,333
State and municipal	501,952		4,404		106,681		1,865		608,633		6,269
Mortgage-backed securities	381,986		3,639		184,807		7,669		566,793		11,308
Asset-backed securities	1,091,078		7,703		190,467		6,711		1,281,545		14,414
Corporate	1,232,940		35,406		76,797		8,987		1,309,737		44,393
Foreign government	169,190		8,822		19,528		3,867		188,718		12,689
Fixed maturity securities	3,478,806		60,461		642,780		30,945		4,121,586		91,406
Common stocks	18,641		18,005		7,829		1,184		26,470		19,189
Preferred stocks	—		—		22,320		3,353		22,320		3,353
Equity securities available for sale	18,641		18,005		30,149		4,537		48,790		22,542
Total	$	3,497,447	$	78,466	$	672,929	$	35,482	$	4,170,376	$	113,948

Non-Investment Grade Fixed Maturity Securities

A summary of the Company’s non-investment grade fixed maturity securities that were in an unrealized loss position at December 31, 2016 is presented in the table below:

($ in thousands)	Number of Securities	Aggregate Fair Value		Gross Unrealized Loss
State and municipal	1	$	5,136	$	3,725
Corporate	10	78,462		1,370
Mortgage-backed securities	11	22,987		1,106
Asset-backed securities	4	1,256		362
Foreign government	15	112,985		341
Total	41	$	220,826	$	6,904