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Intangible Assets, net (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Referral Relationship [Member]
 
Finite Lived Intangible Assets Amortization [Line Items]  
2013 $ 398
2014 395
2015 374
2016 374
2017 374
2018 338
2019 301
2020 294
2021 269
2022 221
2023 113
2024 50
Non Compete Agreements [Member]
 
Finite Lived Intangible Assets Amortization [Line Items]  
2013 281
2014 140
2015 140
2016 78
2017 $ 33