Stock-Based Compensation (Details 2) shares in Thousands	12 Months Ended
Dec. 31, 2015 $ / shares shares
$8.18 - $9.90 Range [Member]
Summarized information about outstanding and exercisable stock option
Range of exercise prices, Lower limit	$ 8.18
Range of exercise prices, Upper limit	$ 9.90
Shares outstanding \| shares	848
Weighted average remaining contractual price	2 years 3 months 22 days
Weighted average exercise price	$ 8.33
Shares exercisable \| shares	432
Weighted average exercise price	$ 8.41
$10.39 - $17.80 Range [Member]
Summarized information about outstanding and exercisable stock option
Range of exercise prices, Lower limit	10.39
Range of exercise prices, Upper limit	$ 17.80
Shares outstanding \| shares	394
Weighted average remaining contractual price	1 year 4 months 6 days
Weighted average exercise price	$ 10.64
Shares exercisable \| shares	197
Weighted average exercise price	$ 10.64
$18.77 - $22.66 Range [Member]
Summarized information about outstanding and exercisable stock option
Range of exercise prices, Lower limit	18.8
Range of exercise prices, Upper limit	$ 22.66
Shares outstanding \| shares	837
Weighted average remaining contractual price	3 years 11 months 12 days
Weighted average exercise price	$ 21.83
Shares exercisable \| shares	5
Weighted average exercise price	$ 18.77
$23.40-27.58 Range [Member]
Summarized information about outstanding and exercisable stock option
Range of exercise prices, Lower limit	23.4
Range of exercise prices, Upper limit	$ 27.33
Shares outstanding \| shares	284
Weighted average remaining contractual price	3 years 3 months 4 days
Weighted average exercise price	$ 24.22
Shares exercisable \| shares	0
Weighted average exercise price	$ 0.00

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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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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ 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)(iii)
-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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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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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ 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)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are 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

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 (e)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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