UNAUDITED CONDENSED QUARTERLY FINANCIAL DATA (TABLES)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

UNAUDITED SUMMARY OF QUARTERLY FINANCIAL RESULTS [Table Text Block]

Quarters ended	Mar 31		Jun 30		Sep 30			Dec 31
2013
Net premiums earned	$	874,039	$	945,873	$	945,242		$	941,911
Net investment income	108,908		83,112		103,429			113,863
Net realized investment gains (losses)	44,478		16,235		(4,708		)	19,558
Underwriting income	170,799		9,921		153,088			94,159
Net income available to common shareholders	302,816		72,447		137,121			171,524
Earnings per common share - basic	$	2.59	$	0.63	$	1.23		$	1.55
Earnings per common share - diluted	$	2.55	$	0.62	$	1.21		$	1.52
2012
Net premiums earned	$	846,362	$	850,603	$	862,447		$	856,049
Net investment income	116,023		74,449		103,638			86,847
Net realized investment gains	14,491		30,405		50,803			31,771
Underwriting income (loss)	62,689		119,739		154,999			(74,291		)
Net income (loss) available to common shareholders	121,997		168,152		223,407			(18,551		)
Earnings (loss) per common share - basic	$	0.97	$	1.36	$	1.84		$	(0.16	)
Earnings (loss) per common share - diluted	$	0.96	$	1.35	$	1.82		$	(0.16	)