Share Based Compensation (Details 2) - $ / shares	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Options Outstanding Summary [Line Items]
Balance,	519,000
Number Of Options [Member]
Stock Options Outstanding Summary [Line Items]
Balance,	690,000	1,246,000	1,357,000
Forfeited	(171,000)	(513,000)	(110,000)
Exercised		(43,000)	(1,000)
Balance,	519,000	690,000	1,246,000	1,357,000
Weighted Average Exercise Price [Member]
Stock Options Outstanding Summary [Line Items]
Exercise Price, Lower Range Limit	$ 49.05	$ 25.68	$ 16.97	$ 16.97
Exercise Price, Upper Range Limit	98.87	98.87	98.87	$ 98.87
Exercise Price, Lower Range Limit Forfeited	25.68	33.57	25.68
Exercise Price, Upper Range Limit Forfeited	$ 75.18	75.18	75.18
Exercise Price, Lower Range Limit Exercised		16.97	16.97
Exercise Price, Upper Range Limit Exercised		$ 25.68	$ 16.97

Lower exercise price range for options exercised during the period.

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- Definition

Lower exercise price range of forfeited stock options.

+ References

No definition available.

+ Details

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- Definition

Shares of stock options exercised during the period.

+ References

No definition available.

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- Definition

Forfeited Stock Option Shares

+ References

No definition available.

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- Definition

Upper exercise price range for options exercised during the period.

+ References

No definition available.

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- Definition

Upper exercise price range of forfeited stock options.

+ References

No definition available.

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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

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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