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Capitalization Narrative (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Common stock, shares authorized	36,000,000us-gaap_CommonStockSharesAuthorized	36,000,000us-gaap_CommonStockSharesAuthorized
Common stock, par value (usd per share)	$ 0.521us-gaap_CommonStockParOrStatedValuePerShare	$ 0.521us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares issued	20,286,840us-gaap_CommonStockSharesIssued	20,169,211us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	20,286,840us-gaap_CommonStockSharesOutstanding	20,169,211us-gaap_CommonStockSharesOutstanding
Preferred stock, shares authorized	176,407us-gaap_PreferredStockSharesAuthorized	176,407us-gaap_PreferredStockSharesAuthorized
Preferred stock, par value (usd per share)	$ 25us-gaap_PreferredStockParOrStatedValuePerShare	$ 25us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares outstanding	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued

X

- Definition

Face amount or stated value per share of common stock.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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-Number 210

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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