Share Repurchase Programs (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Share Repurchase Programs (Textual) [Abstract]
Common stock repurchases	$ 6,141	$ 106,286
December 2013 Anti-Dilutive Share Repurchase Program
Share Repurchase Programs (Textual) [Abstract]
Common stock repurchases	$ 6,000	$ 106,000
Common Stock
Share Repurchase Programs (Textual) [Abstract]
Repurchased and retired shares	69,107	1,323,278
Common stock repurchases	$ 35	$ 662
December 2015 Program
Share Repurchase Programs (Textual) [Abstract]
Maximum number of share repurchases authorization	1,500,000.0
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	2,000,000
December 2015 Program \| December Two Thousand Thirteen Anti Dilutive Share Repurchase Program
Share Repurchase Programs (Textual) [Abstract]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	500,000.0

Represents maximum amount of shares authorized for repurchases under the Anti-Dilutive Share Repurchase Program.

No definition available.

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- Definition

Share Repurchase Programs.

+ References

No definition available.

+ Details

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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 and retired during the period.

+ 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 04
-Article 3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

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- Definition

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

+ References

+ Details

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- Details

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