Business Combinations, Pro Forma Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Business Acquisition, Pro Forma Information [Abstract]
Revenues	$ 110,598	$ 111,206
Net income	$ 4,367	$ 3,786
Basic net income per share	$ 0.13	$ 0.11
Diluted net income per share	$ 0.13	$ 0.11
Shares used in computing basic net income per share	33,675	32,998
Shares used in computing diluted net income per share	34,181	34,132

Business acquisition proforma weighted average shares outstanding basic.

No definition available.

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- Definition

Business acquisition proforma weighted average shares outstanding diluted.

+ References

No definition available.

+ Details

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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

+ Details

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- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

+ Details

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

+ Details

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

+ Details

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