Investments Net Investment Income (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Investments [Abstract]
Net Investment Income, Insurance Entity, Fixed Maturities	$ 27,470	$ 26,606	$ 26,829
Net Investment Income, Insurance Entity, Equity Securities	2,158	1,534	713
Net Investment Income, Insurance Entity, Mortgage Loans on Real Estate	104	99	101
Net Investment Income, Insurance Entity, Policy Loans	3,332	3,024	2,704
Net Investment Income, Insurance Entity, Other Long-term Investments	234	225	246
Other Components of Investment Income	99	122	207
Total Investment Income	33,397	31,610	30,800
Investment Income, Investment Expense	(1,672)	(1,511)	(1,580)
Net investment income	$ 31,725	$ 30,099	$ 29,220

Other Components of Investment Income

No definition available.

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- Definition

Total of all investment income before investment expenses

+ References

No definition available.

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- Definition

Total expenses related to the generation of investment income in debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.9)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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- Definition

The income earned from investments in securities and property, equipment and other capital assets. It includes rent from property and equipment, dividends from shares in corporations, and interest from bonds, loans, mortgages, derivatives, commercial paper, bank accounts, certificates of deposits, treasuries, and other financial securities. It does not include realized gains and losses on investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 16

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.2)

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 2

-Article 7

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- Definition

The amount of investment earnings, excluding realized and unrealized gain (loss), recognized in the period on holdings of equity securities, net of related investment expenses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.2)

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 2

-Article 7

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- Definition

The amount of investment earnings, excluding realized and unrealized gain (loss), recognized in the period on holdings of debt securities having stated maturity dates, net of related investment expenses.

+ References

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- Definition

The amount of investment earnings, excluding realized and unrealized gain (loss), recognized in the period on holdings of mortgage notes secured by real estate, net of related investment expenses.

+ References

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- Definition

The amount of investment earnings, excluding realized and unrealized gain (loss), recognized in the period on investments that the entity intends to hold for at least a year which are not otherwise specified in the disclosed schedule of investments, net of related investment expenses.

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- Definition

The amount of investment earnings, excluding realized and unrealized gain (loss), recognized in the period on loans secured by benefits in borrowers' insurance contracts, net of related investment expenses.

+ References

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