Quarterly report pursuant to Section 13 or 15(d)

Business Combinations (Details Textual)

v2.4.0.8
Business Combinations (Details Textual) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Business Combinations (Textual) [Abstract]          
Goodwill $ 97,108,000   $ 97,108,000   $ 97,238,000
Amortization of intangible assets acquired 1,689,000 2,065,000 5,364,000 6,122,000  
Decrease in general and administrative expense related to the direct acquisition costs 14,732,000 14,323,000 37,835,000 40,160,000  
Grass Technologies [Member]
         
Business Combinations (Textual) [Abstract]          
Purchase price paid in cash to acquire entity     21,000,000    
Inventory purchase commitment     2,400,000    
Direct cost associated with entity acquisition     600,000    
Goodwill 7,000,000   7,000,000    
Revenue       254,480,000  
Income from operations       20,864,000  
Amortization of intangible assets acquired     59,300    
Decrease in depreciation expense related to property and equipment acquired     14,800    
Decrease in general and administrative expense related to the direct acquisition costs     624,000    
Newborn Hearing Screening Services [Member]
         
Business Combinations (Textual) [Abstract]          
Purchase price paid in cash to acquire entity     $ 2,600,000