Shareholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Treasury Stock Value	$ 14,342	$ 14,342	$ 10,302
2014 Stock Repurchase Program [Member]
Stock Repurchase Program Authorized Percent Of Common Stock	5.00%	5.00%
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	990,000	990,000
Treasury Stock, Shares, Acquired	0	867,310
2015 Stock Repurchase Program [Member]
Stock Repurchase Program Authorized Percent Of Common Stock	5.00%	5.00%
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	950,000	950,000

Stock repurchase program, Authorized percent of Common Stock

No definition available.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

+ Details

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- Definition

The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 30

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656

+ Details

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Balance Type:	debit
Period Type:	instant

- Details

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- Details

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