Acquisitions (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Business Acquisition [Line Items]
Maximum contingent consideration due in 2015	$ 4,554
Maximum contingent consideration due in 2016	2,834
Maximum contingent consideration due in Total	7,388
Prospero [Member]
Business Acquisition [Line Items]
Original range of potential undiscounted payments minimum	0
Original range of potential undiscounted payments maximum	4,675
Maximum contingent consideration due in 2015	1,720
Maximum contingent consideration due in 2016	0
Maximum contingent consideration due in Total	1,720
Effective Companies [Member]
Business Acquisition [Line Items]
Original range of potential undiscounted payments minimum	0
Original range of potential undiscounted payments maximum	5,668
Maximum contingent consideration due in 2015	2,834
Maximum contingent consideration due in 2016	2,834
Maximum contingent consideration due in Total	$ 5,668

Amount of potential cash payments that could result from the contingent consideration arrangement in year two.

No definition available.

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- Definition

Amount of potential cash payments that could result from the contingent consideration arrangement in year one.

+ References

No definition available.

+ Details

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- Definition

Amount of potential cash payments that could result from the contingent consideration arrangement.

+ References

No definition available.

+ Details

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- Details

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479

+ Details

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- Definition

For contingent consideration arrangements and indemnification assets recognized in connection with a business combination, this element represents an estimate of the low-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

+ Details

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- Details

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