Income Taxes (Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Beginning balance	$ 5,158us-gaap_UnrecognizedTaxBenefits	$ 1,750us-gaap_UnrecognizedTaxBenefits	$ 3,091us-gaap_UnrecognizedTaxBenefits
Increase related to prior year tax positions	627	3,044	440
Decrease related to prior year tax positions	443	40	881
Increase related to current year tax positions	294	133
Decrease related to settlements with taxing authorities	(126)	(6,086)	(900)
Decrease related to lapsing of statute of limitations		(356)
Increase related to business acquisitions		6,713
Ending balance	$ 5,510us-gaap_UnrecognizedTaxBenefits	$ 5,158us-gaap_UnrecognizedTaxBenefits	$ 1,750us-gaap_UnrecognizedTaxBenefits

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 15A

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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Amount of increase in unrecognized tax benefits resulting from acquisitions.

+ References

No definition available.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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