Fair Value Measurements - Liabilities (Details) $ in Thousands	Dec. 31, 2014 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Large Capitalization Registered Investment Companies	$ 404
Mid Capitalization Registered Investment Companies	108
Small Capitalization Registered Investment Companies	90
International Developed And Emerging Markets Registered Investment Companies	179
Fixed Income Registered Investment Companies	40
Fixed General Account	160
Liabilities, Fair Value Disclosure	981
Fair Value, Inputs, Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Large Capitalization Registered Investment Companies	404
Mid Capitalization Registered Investment Companies	108
Small Capitalization Registered Investment Companies	90
International Developed And Emerging Markets Registered Investment Companies	179
Fixed Income Registered Investment Companies	40
Fixed General Account	0
Liabilities, Fair Value Disclosure	821
Fair Value, Inputs, Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Large Capitalization Registered Investment Companies	0
Mid Capitalization Registered Investment Companies	0
Small Capitalization Registered Investment Companies	0
International Developed And Emerging Markets Registered Investment Companies	0
Fixed Income Registered Investment Companies	0
Fixed General Account	160
Liabilities, Fair Value Disclosure	160
Fair Value, Inputs, Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Large Capitalization Registered Investment Companies	0
Mid Capitalization Registered Investment Companies	0
Small Capitalization Registered Investment Companies	0
International Developed And Emerging Markets Registered Investment Companies	0
Fixed Income Registered Investment Companies	0
Fixed General Account	0
Liabilities, Fair Value Disclosure	$ 0

This element represents the fair value of mutual funds which are invested in fixed income common stock.

No definition available.

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- Definition

This element represents the fair value of mutual funds which are invested in international developed and emerging markets common stock.

+ References

No definition available.

+ Details

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- Definition

This element represents the fair value of mutual funds which are invested in large capitalization common stock.

+ References

No definition available.

+ Details

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- Definition

This element represents the fair value of mutual funds which are invested in mid capitalization common stock.

+ References

No definition available.

+ Details

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- Definition

This element represents the fair value of mutual funds which are invested in small capitalization common stock.

+ References

No definition available.

+ Details

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- Definition

This element represents the fair value of other liabilities in general accounts.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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