Segment Information

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Segment Information

Segment Information

The Company is primarily engaged in writing personal automobile insurance and provides related property and casualty insurance products to its customers through 14 subsidiaries in 11 states, principally in California.

The Company has one reportable business segment - the Property and Casualty business segment.

Property and Casualty Lines

The Property and Casualty business segment offers several insurance products to the Company’s individual customers and small business customers. These insurance products are: private passenger automobile, which is the Company’s primary business, and related insurance products such as homeowners, commercial automobile and commercial property. The related insurance products are primarily sold to the Company’s individual customers and small business customers, which increases retention of the Company’s private personal automobile client base. The insurance products comprising the Property and Casualty business segment are sold through the same distribution channels, mainly through independent and 100% owned insurance agents, and go through a similar underwriting process.

The Company’s Chief Operating Decision Maker evaluates operating results based on pre-tax underwriting results which is calculated as net premiums earned less (i) losses and loss adjustment expenses; and (ii) underwriting expenses (policy acquisition costs and other operating expenses).

Expenses are allocated based on certain assumptions that are primarily related to premiums and losses. The Company’s net investment income, net realized investment gains (losses), other income, and interest expense are excluded in evaluating pre-tax underwriting profit. The Company does not allocate its assets, including investments, or income taxes in evaluating pre-tax underwriting profit.

Other Lines

The Other business segment represents net premiums written and earned from an operating segment that does not meet the quantitative thresholds required to be considered a reportable segment. This operating segment offers automobile mechanical breakdown warranties which are primarily sold through automobile dealerships and credit unions.

The following tables present the Company's operating results by reportable segment:

	Three Months Ended
	September 30, 2016							September 30, 2015
	Property & Casualty Lines		Other		Total			Property & Casualty Lines		Other		Total
	(Amounts in millions)
Net premiums earned	$	780.6	$	10.3	$	790.9		$	732.9	$	12.6	$	745.5
Less:
Losses and loss adjustment expenses	570.8		5.5		576.3			538.6		7.1		545.7
Underwriting expenses	194.8		4.5		199.3			188.6		5.1		193.7
Underwriting gain	15.0		0.3		15.3			5.7		0.4		6.1
Investment income					30.3							30.9
Net realized investment losses					(15.5		)					(26.3		)
Other income					2.4							2.3
Interest expense					(0.9		)					(0.8		)
Pre-tax income					$	31.6						$	12.2
Net income					$	26.9						$	15.3

	Nine Months Ended
	September 30, 2016								September 30, 2015
	Property & Casualty Lines			Other		Total			Property & Casualty Lines		Other		Total
	(Amounts in millions)
Net premiums earned	$	2,305.0		$	32.3	$	2,337.3		$	2,158.6	$	39.2	$	2,197.8
Less:
Losses and loss adjustment expenses	1,748.2			17.3		1,765.5			1,559.5		21.8		1,581.3
Underwriting expenses	586.1			13.6		599.7			577.4		15.5		592.9
Underwriting gain	(29.3		)	1.4		(27.9		)	21.7		1.9		23.6
Investment income						91.4							94.1
Net realized investment gains (losses)						55.0							(75.6		)
Other income						6.4							6.8
Interest expense						(2.9		)					(2.3		)
Pre-tax income						$	122.0						$	46.6
Net income						$	99.1						$	51.1

The following tables present the Company’s net premiums earned and direct premiums written by line of insurance business:

	Three Months Ended
	September 30, 2016						September 30, 2015
	Property & Casualty Lines		Other		Total		Property & Casualty Lines		Other		Total
	(Amounts in millions)
Private passenger automobile	$	614.0	$	—	$	614.0	$	581.3	$	—	$	581.3
Homeowners	105.5		—		105.5		95.8		—		95.8
Commercial automobile	41.2		—		41.2		37.0		—		37.0
Other	19.9		10.3		30.2		18.8		12.6		31.4
Net premiums earned	$	780.6	$	10.3	$	790.9	$	732.9	$	12.6	745.5
Private passenger automobile	$	630.1	$	—	$	630.1	$	609.0	$	—	$	609.0
Homeowners	116.0		—		116.0		106.6		—		106.6
Commercial automobile	41.9		—		41.9		40.1		—		40.1
Other	22.4		6.6		29.0		22.3		7.4		29.7
Direct premiums written	$	810.4	$	6.6	$	817.0	$	778.0	$	7.4	$	785.4

	Nine Months Ended
	September 30, 2016						September 30, 2015
	Property & Casualty Lines		Other		Total		Property & Casualty Lines		Other		Total
	(Amounts in millions)
Private passenger automobile	$	1,820.1	$	—	$	1,820.1	$	1,716.0	$	—	$	1,716.0
Homeowners	307.0		—		307.0		281.6		—		281.6
Commercial automobile	119.8		—		119.8		106.3		—		106.3
Other	58.1		32.3		90.4		54.7		39.2		93.9
Net premiums earned	$	2,305.0	$	32.3	$	2,337.3	$	2,158.6	$	39.2	2,197.8
Private passenger automobile	$	1,857.3	$	—	$	1,857.3	$	1,763.1	$	—	$	1,763.1
Homeowners	331.4		—		331.4		300.8		—		300.8
Commercial automobile	125.2		—		125.2		114.8		—		114.8
Other	66.3		20.9		87.2		62.6		22.8		85.4
Direct premiums written	$	2,380.2	$	20.9	$	2,401.1	$	2,241.3	$	22.8	$	2,264.1