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Acquisitions (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Feb. 05, 2016
Feb. 29, 2016
Dec. 31, 2013
Feb. 28, 2013
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Business Combination, Separately Recognized Transactions [Line Items]              
Payments to acquire businesses, gross         $ 30,838 $ 27,897 $ 11,936
Percentage of royalty payable on net sales     0.834%        
Deerfield CSF LLC | Affiliated Entity              
Business Combination, Separately Recognized Transactions [Line Items]              
Percentage of royalty payable on net sales       1.75%      
FSC              
Business Combination, Separately Recognized Transactions [Line Items]              
Business combination, consideration transferred $ 21,659            
Payment for settlement of net working capital $ 467            
Business combination, pro forma information, revenue of acquiree since acquisition date, actual         5,985    
Business combination, pro forma information, loss of acquiree since acquisition date, actual         $ 5,839    
FSC | Maximum              
Business Combination, Separately Recognized Transactions [Line Items]              
Acquired intangible assets useful life 15 years            
FSC | Minimum              
Business Combination, Separately Recognized Transactions [Line Items]              
Acquired intangible assets useful life 9 years            
FSC | Deerfield CSF LLC | Affiliated Entity              
Business Combination, Separately Recognized Transactions [Line Items]              
Business combination, recognized identifiable assets acquired and liabilities assumed, noncurrent liabilities, long-term debt $ 15,000            
Payments to acquire businesses, gross $ 1,050 $ 1,050          
Debt instrument, term 5 years 5 years          
Business combination, contingent consideration, liability $ 6,659            
Percentage of royalty payable on net sales 15.00% 15.00%          
FSC | Deerfield CSF LLC | Affiliated Entity | Maximum              
Business Combination, Separately Recognized Transactions [Line Items]              
Royalty guarantees, commitments, amount $ 12,500            
Royalty guarantees, commitments, term 10 years 10 years