SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Premiums Earned by Segments

The following table sets forth our net premiums earned by segment before intersegment eliminations:

Years Ended December 31,	2016		2015		2014
Property and casualty insurance segment
Net premiums earned
Other liability	$	289,982	$	261,303	$	228,426
Fire and allied lines	265,221		246,450		226,086
Automobile	239,216		210,090		187,813
Workers' compensation	103,605		95,672		88,522
Fidelity and surety	22,507		21,362		19,212
Reinsurance assumed	12,765		13,639		13,145
Other	2,835		3,179		3,735
Total net premiums earned	$	936,131	$	851,695	$	766,939
Life insurance segment
Net premiums earned
Ordinary life (excluding universal life)	$	63,668	$	53,114	$	35,557
Universal life policy fees	11,577		12,834		13,190
Immediate annuities with life contingencies	10,533		12,223		11,639
Accident and health	1,434		1,425		1,274
Other	58		388		261
Total net premiums earned	$	87,270	$	79,984	$	61,921

Segment Reporting Information

The following table sets forth certain data for each of our business segments and is reconciled to our Consolidated Financial Statements. Depreciation and amortization expense and property and equipment acquisitions for 2016, 2015 and 2014 are reported in the property and casualty insurance segment.

	2016			2015			2014
Property and casualty insurance:
Revenues:
Net premiums earned	$	936,131		$	851,695		$	766,939
Investment income, net of investment expenses	55,441			46,606			44,219
Net realized investment gains	4,947			1,124			4,177
Other income (loss)	—			(107		)	910
Total revenues before eliminations	$	996,519		$	899,318		$	816,245
Intersegment eliminations	(157		)	(47		)	18
Total revenues	$	996,362		$	899,271		$	816,263
Net income before income taxes:
Revenues	$	996,519		$	899,318		$	816,245
Benefit, losses and expenses	938,864			784,691			750,768
Total net income before eliminations	$	57,655		$	114,627		$	65,477
Intersegment eliminations	(158		)	743			548
Income before income taxes	$	57,497		$	115,370		$	66,025
Income tax expense	8,379			30,050			13,649
Net income	$	49,118		$	85,320		$	52,376
Assets
Total segment	$	2,662,272		$	2,490,138		$	2,360,764
Intersegment eliminations	(213,132		)	(209,464		)	(233,141		)
Total assets	$	2,449,140		$	2,280,674		$	2,127,623
Life insurance:
Revenues:
Net premiums earned	$	87,270		$	79,984		$	61,921
Investment income, net of investment expenses	51,538			54,222			60,373
Net realized investment gains	1,156			1,722			3,093
Other income	621			508			774
Total revenues before eliminations	$	140,585		$	136,436		$	126,161
Intersegment eliminations	—			(789		)	(530		)
Total revenues	$	140,585		$	135,647		$	125,631
Net income before income taxes:
Revenues	$	140,585		$	136,436		$	126,161
Benefit, losses and expenses	139,671			129,771			115,361
Total net income before eliminations	$	914		$	6,665		$	10,800
Intersegment eliminations	256			(584		)	(362		)
Income before income taxes	$	1,170		$	6,081		$	10,438
Income tax expense	384			2,275			3,677
Net income	$	786		$	3,806		$	6,761
Assets	$	1,605,618		$	1,609,702		$	1,729,066
Consolidated totals:
Total revenues	$	1,136,947		$	1,034,918		$	941,894
Total net income	$	49,904		$	89,126		$	59,137
Total assets	$	4,054,758		$	3,890,376		$	3,856,689