Annual report pursuant to section 13 and 15(d)

Intangible Assets - Additional Information (Detail)

v2.4.0.8
Intangible Assets - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]    
Amortization of intangible assets $ 2,618 $ 2,734
Physician and Customer Relationships [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Weighted average remaining lives 9 years  
Non-Competition Agreements [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Weighted average remaining lives 1 year  
Software [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Weighted average remaining lives 1 year