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Intangible Assets, net (Tables) | 12 Months Ended
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Dec. 31, 2017
Intangible Assets, net [Abstract] |
Intangible Assets, Net | Intangible assets, net as of December 31, 2017 and 2016 consisted of the following (in thousands):
|  | December 31, 2017 |  |  | December 31, 2016 |
Tradenames |  | $ | 29,673 |  |  | $ | 21,234 |
Referral relationships, net of accumulated amortization of $7,209 and $5,275, respectively |  |  | 16,811 |  |  |  | 14,859 |
Non-compete agreements, net of accumulated amortization of $4,100 and $3,380, respectively |  |  | 2,470 |  |  |  | 1,967 |
|  | $ | 48,954 |  |  | $ | 38,060 |
Amortization Expenses | The following table details the amount of amortization expense recorded for intangible assets for the years ended December 31, 2017, 2016 and 2015 (in thousands):
|  | Year Ended |  |  | Year Ended |  |  | Year Ended |
|  | December 31, 2017 |  |  | December 31, 2016 |  |  | December 31, 2015 |
Tradenames |  | $ | - |  |  | $ | 330 |  |  | $ | 84 |
Referral relationships |  |  | 1,934 |  |  |  | 1,512 |  |  |  | 1,153 |
Non-compete agreements |  |  | 720 |  |  |  | 525 |  |  |  | 478 |
|  | $ | 2,654 |  |  | $ | 2,367 |  |  | $ | 1,715 |
Amortization of Referral Relationships and Non Competition Agreements | The remaining balances of the referral relationships and non-compete agreements is expected to be amortized as follows (in thousands):
Referral Relationships |  |  | Non-Compete Agreements |
Years |  | Annual Amount |  |  | Years |  |  | Annual Amount |
2018 |  | $ | 2,032 |  |  |  | 2018 |  |  | $ | 763 |
2019 |  | $ | 1,942 |  |  |  | 2019 |  |  | $ | 691 |
2020 |  | $ | 1,942 |  |  |  | 2020 |  |  | $ | 477 |
2021 |  | $ | 1,942 |  |  |  | 2021 |  |  | $ | 399 |
2022 |  | $ | 1,894 |  |  |  | 2022 |  |  | $ | 140 |
Thereafter |  | $ | 7,059 |  |  |  |  |  |  |  |  |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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