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Goodwill And Intangible Assets (Schedule of Carrying Amount and Accumulated Amortization of Intangible Asset) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Finite-Lived Intangible Assets [Line Items] |  |
Gross balance | $ 40,281 | $ 37,285
Aqcuisiton of customer list |  | 146
Additions for acquisitions | 9,957 | 2,850
Accumulated amortization | (34,825) | (29,930)
Net Balance | 15,413 | 10,351
Customer And Referral Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross balance | 29,872 | 27,896
Aqcuisiton of customer list |  | 146
Additions for acquisitions | 4,800 | 1,830
Accumulated amortization | (26,766) | (24,055)
Net Balance | 7,906 | 5,817
Trade Names And Trademarks [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross balance | 8,161 | 7,181
Additions for acquisitions | 5,100 | 980
Accumulated amortization | (6,296) | (4,587)
Net Balance | 6,965 | 3,574
State Licenses [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross balance | 150 | 150
Net Balance | 150 | 150
Non-competition Agreements [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross balance | 2,098 | 2,058
Additions for acquisitions | 57 | 40
Accumulated amortization | (1,763) | (1,288)
Net Balance | $ 392 | $ 810

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