| **Goodwill (Tables)**              | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                             |
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| **Goodwill Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                        |
| Schedule of Goodwill               | For additional details related to impairment testing, see the “GOODWILL” section of Management’s Discussion and Analysis of Financial Condition and Results of Operations included as Item 7 of this Annual Report on Form 10-K. 2014 2013Balance, January 1$188,948 $141,375Goodwill acquired13,776 47,573Balance, December 31$202,724 $188,948 |

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| - Definition
Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267
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